Russia's invasion of Ukraine: Part 5
in War in Ukraine ·
Nancy Gomez26 said:If the pressure had truly been dropped that low right before the sabotage—assuming the pipeline sits 330 feet below the ocean floor—we wouldn't be seeing this massive plume of gas bubbles on the surface. At that depth, the ocean exerts more pressure than those alleged 7 bars. Since gas is lighter than water, some would certainly escape to the surface depending on the hole's size and location, but it wouldn't manifest in such a concentrated, massive volume. The reality is that the pipeline was under significant pressure; it’s been leaking for days (which explains the dropping pressure), and the breach itself is substantial—potentially a full-section rupture.
At a depth of 100m, you're looking at 10 bars of pressure relative to the atmosphere. If the gas line only had 7 bars of pressure when it broke, the gas would just keep venting if the pipe is laid horizontally or has any slight slope at all. Given how long these pipelines are, they're usually laid on relatively flat seabeds after the ground is prepared. Water would only stop the gas from escaping if the pipe was at a steep enough angle that the 10 bars of external pressure pushed against the 7 bars of internal gas (think of the diving bell principle). You can test this easily: take a clear glass bottle, cap it, submerge it horizontally in a container of water, then unscrew the cap and watch how the water rushes in to displace the air.
Since we've been seeing gas escaping for days, it clearly means water is forcing its way in and "pushing" the gas out. It’s not like anyone is pumping gas back in with compressors.
Bottom line? That pipeline is finished. Even if repairs started today, they'd take months, which is more than enough time for water to corrode the interior. I'd bet it's cheaper for them to just dry out the gas before sending it through rather than building an entire pipeline out of stainless steel.
By the way, could some kind of seabed shift have snapped the pipe? An earthquake was recorded, but a 2.4 on the Richter scale seems too small. Pipelines are flexible because of their length, so you'd need a localized displacement of several dozen meters to cause that kind of damage.