r/petroleumengineers

Gas Cavern Conundrum

So in a recent HAZOP it was decided to add a second layer of pressure protection on the wellbores connecting the salt caverns to the wellheads. On the first (and only thus far) well we ran plugs removed the wellhead, added a hangar and new production string inside the wellbore casing which was already cemented in place (for roughly 40 years now). A cement job was done to cement the new tubing/production string.

When the wellhead was finally in place we found that the 2500m of annulus cement was not holding pressure. Seemed like a bad cement job. The curious thing is that we were seeing higher pressure buildup in the new tubing hangar (communicating with th ecemented annullus) than was in the cavern. we were seeing slow buildups to 5000psi with only 4000 psi in the production string.

My personal opinion was a hydraulic multiplier effect inside the cement - but no way to prove it obviously. Bond logs do not show anything out of the ordinary (but I'm a surface guy so I wouldn't know what to look at.

Anybody here ever see a similiar phenomena? Anyone have any ideas how the hanger could buildup more pressure than what is in the cavern? Thanks in advance. Note: I am not the responsible engineer in this case, just a casual observer doing work on the surface facilities.

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u/tradikal2 — 13 hours ago
▲ 2 r/petroleumengineers+1 crossposts

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u/sunnylonge — 3 days ago

3rd year PetE student here. What niche should I focus to guarantee an oil and gas-related job after graduation?

I am really passionate about drilling. I have experiences in local and off-campus petroleum-related competitions and currently grinding for my safety officer training (SO2 BOSH).

Drilling is broad though. I have no idea the specific jobs it entails and the skills I need to master for such job. Any niche work and skill suggestion?

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u/PumpkinNight0101 — 11 days ago

Retired Senior Geoscientist (30+ years in Oil & Gas) Looking for Consulting/Freelance Opportunities

My dad retired working as a Senior Geo scientist for the largest oil and natural gas company in India. He worked there for over 30 years and absolutely loved his job.

I don’t know but since I’ve never seen him “idle” in the house before, I keep encouraging him to find a freelance job or teach because it’ll be a shame if his talent just sits inactive. But I don’t pressure him to do that at the same time because I know he deserves all the time in the world to relax and do whatever he wants. However recently he’s been very expressive and interested about finding a new opportunity.

Not sure if this is the right platform but is there anyone in the oil and petroleum industry who may have a job for him? I can share his resume. He’s well travelled around the world and wouldn’t mind traveling for work if needed.

Just want to see if I can connect my dad to someone from the industry.

Thank you

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u/Odd_Whereas3992 — 9 days ago

ISM(IIT) Dhanbad Petroleum Engineer

My brother graduated recently and searching for a job, unfortunately he wasn't able to land on campus placement although very few companies appeared in core. He got 2 offers in software but I don't want him to be a part of this stupid IT industry. Any suggestions or referral for him will be appreciated.

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u/good___days — 11 days ago