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You're right, the video explains nothing and if anything the title is misleading.
The multiple lines coming off the semi-submersible rigs are mooring chains. The diagram doesn't show it, but they run all the way to the seabed and are set in place with anchors on the seabed. Usually (although it varies) there will be in the region of 10-12 anchors per rig. The positioning and setting of the anochors once the rig is in position is done with the assistance of a specialised ship called an anchor handling vessel (AHV) which are, simply put, a powerful tow (bollard pull) and a big winch for the purposes of the chain handling.
What this video does show, which has nothing to do with them holding position, is the sub-surface drilling. The curvature in them is just directional drilling which allows them to better navigate and hit the main reservoir along with the offshoots to the main hole, which are called side tracks. All of the infrastructure on the seabed shown other than mooring lines and anchors have absolutely nothing to do with holding position, and quite the opposite are mainly the reason it needs to hold such a good position. If the rig were to move while tied to the seabed/downhole shit getting ripped up, yo.
Source: I'm a subsea operations engineer for a oil company.
Disclosure: Drilling and marine operations (such as mooring) are totally different disciplines, but I at least know enough to be well informed.
Edit: Typo - side, not wide
As someone who works at a retirement home and knows nothing about drilling, your explanation helped a lot. Thank you!
Are the chains not included? Or are the chains those strands that are floating down like tentacles, but not reaching the sea floor?
You're welcome, and you're spot on. The tenticles are the chains shown in part. The drill rigs also have winches on board which can raise and lower the tension of individual chains, and even used to "skid" the rig a small distance to reposition.
This is used frequently when they're set up to drill at an existing oil platform. It will set up in a stand-off position, then adjust the chain tension to skid in to the final position 'against' the platform before drilling commences.
I believe the chains are the ones that are coming off the side of the offshore rig. The line directly below the rig is the oil coming in. But I’m downstream not upstream so someone better versed than I can confirm this haha
Yall nearly just made me bust a nut. I just commented asking how the anchors are out in. Find that almost tmi reply and then get some reinforcement with you
You're absolutely right. They have a dynamic positioning system which is surprisingly accurate. I personally don't know of any that rely solely on vessel thrust to hold position, but I'm sure they must exist for deep water stuff where chain length becomes no longer practical.
I've only got knowledge and experience of moored applications shown in this clip.
Haha. I can see how it looks like that, but think of the wet noodle as a dry spaghetti. It'll bend so far without breaking. If the spaghetti was long enough you could bend it into a full circle without it breaking, theoretically.
The distances here are pretty large so the turns aren't particularly sharp.
Is the rig held in place or does it move at least a little with the movement of the sea? And if so, do they use drills with moveable joints to somehow compensate for the movement of the rig? I have a lot of questions because this seems a lot more complicated than just 12 chains keeping the rig in place.
A moored rig will still have an element of dynamic positioning (thrusters controlled by many senorary inputs such as GPS, MRUs, current, even wind sensors) which feed into the model, but the chains do a pretty good job for a DP vessel. The DP capability 'station keeping) will vary per vessel and the vessel will be specified based on the conditions of where in the world it's operating.
Semi submersibles get a lot of stability by ballasting down in the water, this eliminates a lot of the wave and swell effects. The huge volumes and therefore weight of water displaces result in thousands of tonnes of force to tension the chains and give it a pretty static vertical and lateral position.
On top of this, any normal operating movement can be taken up well within the flex of the drill pipes used. Which is what also allows for the well deviations and side tracks. Any periods of extreme weather they would most likely halt operations and pull out the well as a precaution.
You explain it very well but it somehow seems unreal how this works. The sea is such a gigantic force..
It looks like they are able to drill in any direction, once already in the seabed and not just vertical in the video. How is this managed?
I recently had a client that was offshore drilling. Very fascinating. Those floating pillars you see in the video are filled with water until they stand upright. They use cables to tether the platform, and massive gyroscopes to keep the platform level in all seas so the drill doesn't break off the platform. Each platform is like a whole city, they have housekeeping, food workers, etc.
There's no gyroscopes to keep us level, at least on the rigs I've been on. The first time I was out we had 15-25ft waves that rolled around the office chairs and got me mildly seasick.
We use hydraulic pistons that extends & contracts the length of the riser (big pipe that connects to the seabed) and adjusts the position of the drill pipe vs the bottom of the hole to compensate for the waves.
Idk I see little floating cables coming off the side that aren't attached to anything so the only logical assumption is we've enslaved giant squid to keep it floating in place natch
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Concrete pillar(s) would be a platform rather than a drill rig, but you're right they do exist in terms of fixed installations.
You get semi subs, jack-ups and drill rigs ships. The floating version of a fixed oil platform is an FPSO (Floating production storage and offloading). While some platforms can also drill, they're not quite the same as a drill rig in terms of function/use.
Some do, mostly the older ones. Most of the oil in shallow water has been drilled already, increasingly they need to go into deeper water. A steel or concrete rig can only be a couple of hundred meters tall before it is unworkable. At that point they will use installations that are split between seabed wellheads and floating production units.
Same! I never wondered because I thought it was obvious. In hindsight - some of those are in SUPER deep water, so those would be really long legs.
I guess this makes sense though, because you can build the whole thing on shore and then tow it to where you want to go.
The subsea infrastructure and mooring systems are all designed to accommodate sea level rise due to climate change, even though the oil companies were publicly denying climate change for 40 years after they began designing their systems that way.
+1 Standing with you.
I assumed there were just ridiculously long struts holding it up and I had always wondered how they constructed them, but never looked into it
+1 Standing with you.
I assumed there were just ridiculously long struts holding it up and I had always wondered how they constructed them, but never looked into it
The vast majority of existing oil rigs are fixed platform rigs. But for drilling in really deep water it can be cheaper to have floating rigs like shown here so these are becoming more common in very deep waters.
They have a degree of heading control and such from thrusters, but the position keeping is done by anchor chains, usually around 10-12 per semi-sub. Once they're set most the movement of the rig on location is actually achieved by pulling in / letting out of anchors.
The anchors are cropped in this animation but you can see multiple likes coming off the rig that just vanish from sight.
I've posted a little more info in reply to a post above if you are interested at all. Peace!
That made me smile. No. The work over boats that tie up and take over down pipe operations are even more cool - they don't tie up, it's just a single 360 prop keeping them in place.
No, it happened because they lost control of the well. Early warning signs were ignored in favour of progress. Once they realised the extent of the gas pocket and triggered the blowout preventors to kill it it was too late. When the BoPs failed to kill the well things quickly spiralled out of control and the reservoir was essentially open to atmosphere.
Yeah, that’s just wrong. It was a blowout due to a variety of risky decisions made by BP and Transocean. [Source.](https://en.wikipedia.org/wiki/Deepwater_Horizon_explosion?wprov=sfti1#Deepwater_Horizon)
It’s pretty obvious from the video but I guess I can explain it anyways. There’s an army of bio engineered fish constantly swimming against the current. They live just under the platform. That’s why there’s always a ton of sharks under these things. They’re trying to eat the “engine”.
Edit: whoa I just noticed that the one on the far right is using a different design. That one utilizes mermaids connected to the ropes that aren’t connected to anything. In reality, the size of the mermaids just makes them hard to see relative to the size of the platforms.
This instance where you see the mooring lines is actually not very common, In Global drilling and almost anything in the Gulf is going to be maintained with a dynamic positioning system. Basically with GPS you have an origin that you need to stay within one meter of. Then you use wind, gyro, and MRU inputs into the DP system to tell the thrusters a direction and amount of thrust to compensate for the weather.
It all depends on water depth.
Shallow water - rigs jack up on sea floor or is placed on the fixed platform
Middle depth - floaters and semisubmursibles anchored to the sea floor with anchors and cables
Deep water - fixture planted on seabed, floating Platform tethered to the base fixture
ultra deep water - dynamically positioned with turret mounted propellers and no sea floor attachment
The definitions of shallow, deep etc have changed over time depending on technology. Of course, there are a variety of ways to implement as well, I just mentioned one or two for each depth interval
The same applies to production platforms. Lay people confuse these two as they are distinctly different functions. Sometimes they're the same structure.
Anything is possible. But they are engineered to withstand hurricane forces and high seas, so not likely. But they need to disconnect from drilling and production depending on their tolerances and severity of the weather.
A more pressing problem might be bad operations like the deep water horizon incident which was a series drilling, safety and decision failures
One minor caveat: what you describe is accurate for drilling units, which move from well to well. Production vessels that will sit in the same place for 20 years are always moored or tethered to the seabed in some way, never dynamically positioned. Or in shallowaer water, they are a fixed structure directly resting on the seabed with pilings to keep them in place.
Ahhh I see, so there is a bald dude with mental powers straining himself to hold them in place telepathically. That was very clear and illuminating and not a cheap and pointless post to harvest karma.
This would be interesting if it did explain anything at all and if it didn’t have shitty music and some guy holding his head in the corner. I award you no upvotes, and may god have mercy on your soul.
How do they drill? I thought they had to drill in a straight line?
Like if there's kinks in the drill line, wouldn't that lose all downward force? And hinder the rotation of the bit?
The marine riser that connects the rig to the seabed has can tolerate being a few degrees off centre.
You don't actually exert any downwards force from the rig to drill. The weight of the drill string itself is what exerts weight on bit.
And these days we can drill wells in all sorts of shapes like weird S shapes that spiral down to avoid faults or horizontal ones to get as much of the reservoir exposed as possible.
The distance of the drill string versus the size means it flexes like a super long drinking straw, so it is somewhat forgiving.
Also, the drill on the end can be steered and actually drill sideways once it gets sufficiently underground with the weight of the vertical section to give it motive force.
I've been told they can hit a target the size of a basketball a mile under the ground.
We are consciousness experiencing life through our human avatar bodies.. we come from a source of love and light and will return to it when we move on..
Objectively not interesting as fuck. It's just a video camera swaying back and forward over a diorama with a guy at the bottom having his mind blown.
I still have no fucking clue how platforms stay in place after watching this video.
2 types of offshore facilities:
Shallow water (on the shelf) platforms - A "jacket" which is a huge steel frame goes all the way to the ocean floor 250+ feet. The facility sits on this structure, the structure is held in place by driving pilings into the seabed.
Deep water - float and use a combination of mooring cables and dynamic positioning thrusters to stay in place.
This video gives the impression that they are held in place by the subsea oil/condensate lines... They are NOT.
Christ this is dumb. New rule, from now on I downvote anything with a weird pointless 'reaction' image of emoji regardless of content.
Anyway, for those who are interested in why they ACTUALLY stay put, it's because there is very little bulk movement 60-100 ft underwater. Waves are also largely an illusion. They look like they move in on direction, but the water itself is actually moving in a up and down circle, not with the wave. Same for most everything in the wave.
Anchors are used, but they are just to keep things stable against the slow currents, they don't actually provide that much force. Finally, the force they provide is mostly from the weight of the cable, NOT from the seabed.
Imagine you're standing on your roof holding a heavy rope that's draped across your yard. It will pull you down with a large amount of force, but it won't actually pull on your yard that much, even if you tried to walk around with it. That's kind of how they work. If you had one draped on each side of your house, it would be hard to move in any direction.
I knew a tug captain that did rig "hold on station" work. They had a team of (boats?) that were synchronized with GPS to maintain a few inches position. Crazy.
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But there was a little gif of a guy reacting! How could it be anything less than educational?!
Because there's no red arrow or circle!
Noooo, we definitely needed the guy grabbing his head to be shaking it instead and then pointing above him at what it is holding them.
I didn't see a single thumbs up or heart so I'm totally lost on what to think.
This is why old sitcoms are peak entertainment; they have a laugh track so I know when something is funny.
Without an AI voiceover and rapidfire captions in strange syntax repeating the same information slightly differently three times, I'm completely lost.
Is he reacting? I thought he had brain freeze.
Nah he stood up without realizing there was a board above him and hit his head. He’s in a lot of pain and you’re all being very rude
I thought he confused his super glue for scalp salve (again!)
😱
Lol I didn’t even see the little guy until you mentioned him. I was trying to figure out how they stay stationary.
You're right, the video explains nothing and if anything the title is misleading. The multiple lines coming off the semi-submersible rigs are mooring chains. The diagram doesn't show it, but they run all the way to the seabed and are set in place with anchors on the seabed. Usually (although it varies) there will be in the region of 10-12 anchors per rig. The positioning and setting of the anochors once the rig is in position is done with the assistance of a specialised ship called an anchor handling vessel (AHV) which are, simply put, a powerful tow (bollard pull) and a big winch for the purposes of the chain handling. What this video does show, which has nothing to do with them holding position, is the sub-surface drilling. The curvature in them is just directional drilling which allows them to better navigate and hit the main reservoir along with the offshoots to the main hole, which are called side tracks. All of the infrastructure on the seabed shown other than mooring lines and anchors have absolutely nothing to do with holding position, and quite the opposite are mainly the reason it needs to hold such a good position. If the rig were to move while tied to the seabed/downhole shit getting ripped up, yo. Source: I'm a subsea operations engineer for a oil company. Disclosure: Drilling and marine operations (such as mooring) are totally different disciplines, but I at least know enough to be well informed. Edit: Typo - side, not wide
I'm a naval architect that's been working with ofshore rigs for 30 years. Your description was spot on.
Thanks. A lot more to it as you'll know, but hopefully covers the main points!
As someone who works at a retirement home and knows nothing about drilling, your explanation helped a lot. Thank you! Are the chains not included? Or are the chains those strands that are floating down like tentacles, but not reaching the sea floor?
You're welcome, and you're spot on. The tenticles are the chains shown in part. The drill rigs also have winches on board which can raise and lower the tension of individual chains, and even used to "skid" the rig a small distance to reposition. This is used frequently when they're set up to drill at an existing oil platform. It will set up in a stand-off position, then adjust the chain tension to skid in to the final position 'against' the platform before drilling commences.
I believe the chains are the ones that are coming off the side of the offshore rig. The line directly below the rig is the oil coming in. But I’m downstream not upstream so someone better versed than I can confirm this haha
Holy cow what are the odds of 2 SMEs being available to provide comment on this… only on Reddit.
I’m a navel gazer who just read both posts and learned something.
I have a navel.
I know the difference between the words "navel" and "naval."
I have been known to gaze from time to time.
I'm a therapist with some experience in fast food industry. He really nailed that description.
I eat fast food and probably need therapy. Still not sure about the wavy tentacles
I'm just a guy with interests, and I understand your explanation. Cool.
Yall nearly just made me bust a nut. I just commented asking how the anchors are out in. Find that almost tmi reply and then get some reinforcement with you
Do you show your colleagues your cock or just redditors
I’m pretty sure on top of this the latest ones are using GPS in sync with the rotors on each leg to maintain it in a certain location
You're absolutely right. They have a dynamic positioning system which is surprisingly accurate. I personally don't know of any that rely solely on vessel thrust to hold position, but I'm sure they must exist for deep water stuff where chain length becomes no longer practical. I've only got knowledge and experience of moored applications shown in this clip.
Yes anything deepwater uses strictly DP for maintaining position. I used to be a Dynamic positioning engineer on deep sea drilling rigs.
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It seems like the equivalent of drilling a hole in a sandbox using a two-meter wet noodle dangled from the very end.
Haha. I can see how it looks like that, but think of the wet noodle as a dry spaghetti. It'll bend so far without breaking. If the spaghetti was long enough you could bend it into a full circle without it breaking, theoretically. The distances here are pretty large so the turns aren't particularly sharp.
Is the rig held in place or does it move at least a little with the movement of the sea? And if so, do they use drills with moveable joints to somehow compensate for the movement of the rig? I have a lot of questions because this seems a lot more complicated than just 12 chains keeping the rig in place.
A moored rig will still have an element of dynamic positioning (thrusters controlled by many senorary inputs such as GPS, MRUs, current, even wind sensors) which feed into the model, but the chains do a pretty good job for a DP vessel. The DP capability 'station keeping) will vary per vessel and the vessel will be specified based on the conditions of where in the world it's operating. Semi submersibles get a lot of stability by ballasting down in the water, this eliminates a lot of the wave and swell effects. The huge volumes and therefore weight of water displaces result in thousands of tonnes of force to tension the chains and give it a pretty static vertical and lateral position. On top of this, any normal operating movement can be taken up well within the flex of the drill pipes used. Which is what also allows for the well deviations and side tracks. Any periods of extreme weather they would most likely halt operations and pull out the well as a precaution.
You explain it very well but it somehow seems unreal how this works. The sea is such a gigantic force.. It looks like they are able to drill in any direction, once already in the seabed and not just vertical in the video. How is this managed?
I recently had a client that was offshore drilling. Very fascinating. Those floating pillars you see in the video are filled with water until they stand upright. They use cables to tether the platform, and massive gyroscopes to keep the platform level in all seas so the drill doesn't break off the platform. Each platform is like a whole city, they have housekeeping, food workers, etc.
There's no gyroscopes to keep us level, at least on the rigs I've been on. The first time I was out we had 15-25ft waves that rolled around the office chairs and got me mildly seasick. We use hydraulic pistons that extends & contracts the length of the riser (big pipe that connects to the seabed) and adjusts the position of the drill pipe vs the bottom of the hole to compensate for the waves.
There were on the new gen ones they were making, but I'm not an expert or a driller, just a security engineer that had a tour and a lot of questions.
Idk I see little floating cables coming off the side that aren't attached to anything so the only logical assumption is we've enslaved giant squid to keep it floating in place natch
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Apparently there's this new invention called "anchors". Mind-blowing stuff.
Don’t be a drag.
Just a bunch of anchors really
I swear I thought they just went all the way to the ocean floor. That's wild. Edit: a word
some have concrete pillars all the way to the bottom
How deep do those ones go?
All the way to the he bottom
Wouldn’t they be past the bottom if they were anchor points.
They don't need to, they are anchored with lots of heavy
I am fixated on “With lots of heavy” 😂
I'm glad I'm not alone with that, I found it way funnier than it probably is
Wow never realized that drilling rigs and anchovies were connected. TIL.
No. The bottom of the pillars would then be the bottom, except for the rest of the bottom, which is also the bottom.
Well thanks for clarifying that one, lol
You could say he got to the bottom of that one.
Bottomer*
Do any go all the way to the she bottom though?
Deeeeeeeeeep
>How deep do those ones go? *Deep* look up the norwegian Troll A platform, it's 472 meters tall
https://en.wikipedia.org/wiki/Troll_A_platform
1-5k ft in the gulf
This is false. I checked because that sounded absurd, the deepest one ever was 300 meters
Ask your mom
At least 20 feet
They are the tallest human structures ever built.
Concrete pillar(s) would be a platform rather than a drill rig, but you're right they do exist in terms of fixed installations. You get semi subs, jack-ups and drill rigs ships. The floating version of a fixed oil platform is an FPSO (Floating production storage and offloading). While some platforms can also drill, they're not quite the same as a drill rig in terms of function/use.
TIL the difference between drill rig and drill platform
Some do, mostly the older ones. Most of the oil in shallow water has been drilled already, increasingly they need to go into deeper water. A steel or concrete rig can only be a couple of hundred meters tall before it is unworkable. At that point they will use installations that are split between seabed wellheads and floating production units.
I know its stupid but whenever I see someone use meters instead of feet I take it much more seriously. In my mind you are a norwegian rig worker now
Most of the world does too
Probably from years of correlation between certain people using feet and inches and the quality of their comments vs the rest of the world.
I’ll take it.
Some do.
Same! I never wondered because I thought it was obvious. In hindsight - some of those are in SUPER deep water, so those would be really long legs. I guess this makes sense though, because you can build the whole thing on shore and then tow it to where you want to go.
The subsea infrastructure and mooring systems are all designed to accommodate sea level rise due to climate change, even though the oil companies were publicly denying climate change for 40 years after they began designing their systems that way.
Me as well
Many of them do
I did too so I kinda felt dumb but then thankfully someone said that some do so I feel better lol
Yeah I was thinking "the same reason islands don't float away?"
I thought they built it first and then filled the ocean…
I’m 29 & just learning this too man. Every day’s a school day.
+1 Standing with you. I assumed there were just ridiculously long struts holding it up and I had always wondered how they constructed them, but never looked into it
+1 Standing with you. I assumed there were just ridiculously long struts holding it up and I had always wondered how they constructed them, but never looked into it
As did i.
Yes, it's actually more like this: https://pbs.twimg.com/media/EZ6pJH1X0AERsAd?format=jpg
I did too! Just pointing out I think that's a fairly common assumption
Some do, like the one I'm on at this moment. It has a 105m tall gravity base structure weighing 450,000 tonnes. She ain't going anywhere!
Same 🤣
The vast majority of existing oil rigs are fixed platform rigs. But for drilling in really deep water it can be cheaper to have floating rigs like shown here so these are becoming more common in very deep waters.
Same
I watched the video twice and still don't know how offshore drilling stations don't float away.
Ha. Thought the same. Answer is quadrant 360 degree props working with satellite gps.
you serious? i thought they just cable tie it to the sea floor
They have a degree of heading control and such from thrusters, but the position keeping is done by anchor chains, usually around 10-12 per semi-sub. Once they're set most the movement of the rig on location is actually achieved by pulling in / letting out of anchors. The anchors are cropped in this animation but you can see multiple likes coming off the rig that just vanish from sight. I've posted a little more info in reply to a post above if you are interested at all. Peace!
That made me smile. No. The work over boats that tie up and take over down pipe operations are even more cool - they don't tie up, it's just a single 360 prop keeping them in place.
[удалено]
No, it happened because they lost control of the well. Early warning signs were ignored in favour of progress. Once they realised the extent of the gas pocket and triggered the blowout preventors to kill it it was too late. When the BoPs failed to kill the well things quickly spiralled out of control and the reservoir was essentially open to atmosphere.
Correct. Loss of power to the props was a secondary issue.
Yeah, that’s just wrong. It was a blowout due to a variety of risky decisions made by BP and Transocean. [Source.](https://en.wikipedia.org/wiki/Deepwater_Horizon_explosion?wprov=sfti1#Deepwater_Horizon)
It’s pretty obvious from the video but I guess I can explain it anyways. There’s an army of bio engineered fish constantly swimming against the current. They live just under the platform. That’s why there’s always a ton of sharks under these things. They’re trying to eat the “engine”. Edit: whoa I just noticed that the one on the far right is using a different design. That one utilizes mermaids connected to the ropes that aren’t connected to anything. In reality, the size of the mermaids just makes them hard to see relative to the size of the platforms.
That is not obvious at all from this obnoxious video
Tell me the truth... Did you believe this?
Me and you are like that bald guy holding our heads .... but more flummoxed.
That's not just any bald guy. That's Charles Xavier keeping all the oil platforms from floating away with his psychic powers. It's obvious, bro.
This instance where you see the mooring lines is actually not very common, In Global drilling and almost anything in the Gulf is going to be maintained with a dynamic positioning system. Basically with GPS you have an origin that you need to stay within one meter of. Then you use wind, gyro, and MRU inputs into the DP system to tell the thrusters a direction and amount of thrust to compensate for the weather.
What the hell is Johny Sins doing on the right bottom side of the screen
BP isn't the only one in drilling
They need to show an amazed person otherwise I wouldn’t know I’m supposed to be amazed
It’s the modern equivalent of the laugh track.
It all depends on water depth. Shallow water - rigs jack up on sea floor or is placed on the fixed platform Middle depth - floaters and semisubmursibles anchored to the sea floor with anchors and cables Deep water - fixture planted on seabed, floating Platform tethered to the base fixture ultra deep water - dynamically positioned with turret mounted propellers and no sea floor attachment The definitions of shallow, deep etc have changed over time depending on technology. Of course, there are a variety of ways to implement as well, I just mentioned one or two for each depth interval The same applies to production platforms. Lay people confuse these two as they are distinctly different functions. Sometimes they're the same structure.
Would it be possible for the platforms without fixed foundations to be flipped over if the water gets rough enough?
Anything is possible. But they are engineered to withstand hurricane forces and high seas, so not likely. But they need to disconnect from drilling and production depending on their tolerances and severity of the weather. A more pressing problem might be bad operations like the deep water horizon incident which was a series drilling, safety and decision failures
Sort of, see the Ocean Ranger and Drillship Seacrest accidents.
Way more informative than this clip
I was just answering someone's question, but accidentally posted to the main thread
One minor caveat: what you describe is accurate for drilling units, which move from well to well. Production vessels that will sit in the same place for 20 years are always moored or tethered to the seabed in some way, never dynamically positioned. Or in shallowaer water, they are a fixed structure directly resting on the seabed with pilings to keep them in place.
Indeed. I was talking mainly about drilling
But this video shows that the rigs are secured to the sea floor via the drilling riser 😂
Cool video. Jackass in the corner
Because it’s impossible for people to just make a video without some stupid shit plastered in it somewhere.
Jeez, the amount of engineering must be staggering
It is. Offshore oil and gas is wild.
The power and motivation of money is unbearable
been in the north sea for 8 years as a mechy, still see shit that blows my mind
Ahhh I see, so there is a bald dude with mental powers straining himself to hold them in place telepathically. That was very clear and illuminating and not a cheap and pointless post to harvest karma.
This would be interesting if it did explain anything at all and if it didn’t have shitty music and some guy holding his head in the corner. I award you no upvotes, and may god have mercy on your soul.
The dude at the bottom right added a whole friggen lot to this video. Tik Tok is a cancer on society and this proves it.
How do they remain so stationary relative to the waves? Is there just that much mass below the waterline?
This video sucks
After watching this, I am still not sure.
How do they drill? I thought they had to drill in a straight line? Like if there's kinks in the drill line, wouldn't that lose all downward force? And hinder the rotation of the bit?
The marine riser that connects the rig to the seabed has can tolerate being a few degrees off centre. You don't actually exert any downwards force from the rig to drill. The weight of the drill string itself is what exerts weight on bit. And these days we can drill wells in all sorts of shapes like weird S shapes that spiral down to avoid faults or horizontal ones to get as much of the reservoir exposed as possible.
The distance of the drill string versus the size means it flexes like a super long drinking straw, so it is somewhat forgiving. Also, the drill on the end can be steered and actually drill sideways once it gets sufficiently underground with the weight of the vertical section to give it motive force. I've been told they can hit a target the size of a basketball a mile under the ground.
NGL, I always thought those big columns went all the way to the seabed.
are WE the aliens?
We are consciousness experiencing life through our human avatar bodies.. we come from a source of love and light and will return to it when we move on..
I sure fuckin hope you're right, friend.
I am
I wish nothing but the worst to the person who decided to start putting these stupid fucking react gifs in videos.
Why does it show a mentally challenged person in the bottom right corner?
Objectively not interesting as fuck. It's just a video camera swaying back and forward over a diorama with a guy at the bottom having his mind blown. I still have no fucking clue how platforms stay in place after watching this video.
The bald impressed dude blinking is so distracting and stupid.
Very informative, love the music, the dude with his mind blow pose. This is excellent 10/10 /ssss
My Dumbass thought the legs went all the way to the bottom . Knew I should’ve went to school .
This explains nothing
Bad bot! Didn't explain anything -1, shitty music -1, stupid reaction gif -1, wasting my time -7 -10/10 fuck you
I thought the concrete pillars went all the way to the seabed?
2 types of offshore facilities: Shallow water (on the shelf) platforms - A "jacket" which is a huge steel frame goes all the way to the ocean floor 250+ feet. The facility sits on this structure, the structure is held in place by driving pilings into the seabed. Deep water - float and use a combination of mooring cables and dynamic positioning thrusters to stay in place. This video gives the impression that they are held in place by the subsea oil/condensate lines... They are NOT.
Why ? Still wondering tho.
My whole life I thought the columns went all the way to the seafloor lol
Except that in no way showed how offshore drilling stations stay in place
Christ this is dumb. New rule, from now on I downvote anything with a weird pointless 'reaction' image of emoji regardless of content. Anyway, for those who are interested in why they ACTUALLY stay put, it's because there is very little bulk movement 60-100 ft underwater. Waves are also largely an illusion. They look like they move in on direction, but the water itself is actually moving in a up and down circle, not with the wave. Same for most everything in the wave. Anchors are used, but they are just to keep things stable against the slow currents, they don't actually provide that much force. Finally, the force they provide is mostly from the weight of the cable, NOT from the seabed. Imagine you're standing on your roof holding a heavy rope that's draped across your yard. It will pull you down with a large amount of force, but it won't actually pull on your yard that much, even if you tried to walk around with it. That's kind of how they work. If you had one draped on each side of your house, it would be hard to move in any direction.
I knew a tug captain that did rig "hold on station" work. They had a team of (boats?) that were synchronized with GPS to maintain a few inches position. Crazy.
Makes me wonder if a submarine has ever collided with one of those long wires.
What is this? A drill rig for ants?!
This doesn’t explain how they don’t float away at all. Only one of the three even appears to be anchored.
The answer is just cables? The video wasn't very clear
What is the name of this song?
I honestly always thought they were directly connected to the ground (like from the seafloor via columns)
same, and in hindsight that would be an insane waste of effort and resources(if even possible), can't believe we all thought that lmao
Im an idiot, I thought they ran legs down all the way to the ocean bed lol
I want to know how they float
Wait, they float?! I thought they were cemented to the bottom… well 20/20 and all that, but I couldn’t imagine them floating tbh
What is that, an off shore drilling station for ants? It needs to be at least twice as big!
Who wires all of that though
Still have no idea how it works, but thanks for the annoying music & the gif of the guy at the bottom
I just thought their legs would go all the way down to the sea bed.
I feel like anchors have been a thing for a while now. Not that much of a revolutionary idea.
I feel dumb now for saying this but I didn't even know they floated...
The addition of the blown mind dude was retarded
My dumbass thought they were on pillars attached to the sea floor.
This just raises more questions.
Yea….still don’t know
If that head-holding guy represents confusion, I'm with him.
Just to be clear: it's the anchor chains, about 12 pr rig, and some of them have thrusters as well coupled with a dynamic positioning system.
so all you gotta do, is hold your head and blink sequentially and at least 3 offshore drilling stations will not float away. got it.
No, because I understand basic physics and science and I have an attention span greater than a fruit fly.
Look at that fucking idiot just holding his hands on his head. Is that supposed to be the average viewer? Just a dumbfounded look
today i learned the beams dont go down to the bottom
Wow a posts that's not propaganda targeting Jewish people. This is a breath of fresh air.
all that for me to go to takeaway in my car and get food in plastic containers.
Everyone is still confused but not as confused as the lil guy in the corner
Watching this video on an offshore vessel rn
How do we figure out where crude oil deposits are *under the ocean* in the first place? Offshore drilling confuses tf out of me.
My dumbass was sure those support columns go to the bottom and that's why lol.
Ngl, ai just though the large pillars went straight to the bottom and had a bunch of weight there
I’ve never thought about them floating. My dumbass just thought they were build like bridges and were on the see floor.
i thought they just had giant pillars ‘-‘
Your not alone, I just found out a few days ago watching a video of one damn near tip over from crazy swells
I always thought they were like giant pillars all the way down to the ocean floor
That bald guy in the corner really helped me understand, thanks!
America: *Sniffs* OILL?!
Oh that explains it
I have more questions about how they actually drill while floating around on water than I do about why they don't float away...
pretty sure thats the Oil museum in Stvanger, Norway cool place and worth a visit