[oilman0503]

What procedures are used to get coil tubing unstuck in a well. Has anyone had this problem during drilling operations? What was the outcome? How did it get resolved?

[evilgenius]

What do you mean by coil tubing. I've lost a few bits down a few holes, but I don't know anything about coil tubing. If the solution is anything like my past problems it will have something to do with lubrication. What kind of mud are you using? Are you able to regulate how much of it is going down your well? Too fast a rate of flow can cause blowouts at the side that can cause rock falls that will pin your stick. Also I have heard of some kinds of mud being a problem in terms of dissolving the source rock you are drilling in. If that happens you have to pull out and restart with a different mud.

My experience is not with oil drilling or water wells, rather prospecting. I think there can be a lot of difference.

[Maddog78]

I think you're in the wrong place, pal.
Although this forum has oil in the title it's actually a doomer board.
Kind of caught me off guard when I first came here, too.

I mostly deal with big rigs. Our production guys deal with the CT units.

I understand though that sometimes lubricants work and sometimes vibrating units work and sometimes you just have to shoot it off, depends on the circumstances.
I would think your contractor would have some ideas to try.
Get with their senior people.

[Maddog78]

What do you mean by coil tubing. I've lost a few bits down a few holes, but I don't know anything about coil tubing. If the solution is anything like my past problems it will have something to do with lubrication. What kind of mud are you using? Are you able to regulate how much of it is going down your well? Too fast a rate of flow can cause blowouts at the side that can cause rock falls that will pin your stick. Also I have heard of some kinds of mud being a problem in terms of dissolving the source rock you are drilling in. If that happens you have to pull out and restart with a different mud.

My experience is not with oil drilling or water wells, rather prospecting. I think there can be a lot of difference.

CT is generally used during production procedures and mud is usually not involved.
Wiki has a pretty good introduction.

http://en.wikipedia.org/wiki/Coiled_tubing

[Blacksmith]

I have not worked on coiled tubing rigs for some years, but if the coil is old, it will develop cracks while in the hole and this may be the source of your problem. We were always removing sections of the coil.

I did not like coil tubing rigs, since they were shallow burners.

[oilman0503]

Thanks for your input. This is helpful.