Private Forums
POOH completion with Swell Packers
30 May 2018
Dear all,
We are going to do work-over the well with Lower completion of Liner Hanger retrieved by pulling tool and 04 sets of 10ft length swell element wrapping in 4-1/2", 12.6#, L80 tubing base pipe setting in 9-5/8" casing.
The Swell Provider calculated that it will required about 15kip overpull per each swell * 4 = 60kip to retrieve the swell packer draft. With such requirement, tubing / SSD strength should be very enough to POOH the swelled packers.
Do you have any experience of retrieving such swell packers and recommend if we can confidently straight pull the full assy or cut a part for safety?
Thank you very much for your help / sharing
10 answer(s)
Edward Kerr
Asia Pacific BDM
Ardyne
Total Posts: 1
Join Date: 05/06/18

Hi Trung and discussion group,

Straight pull recovery of Swell Packers can be possible, however there can be challenges due to the high friction / drag forces involved, especially in deep and deviated wells where workstring friction losses prevent the full surface applied force from reaching the fish (4-1/2 Casing with Swell Packers) especially when using a lightweight rig our hydraulic workover unit. Platform sub structure limitations can also be a concern which limit surface applied pull forces.

Ardyne can provide a Downhole Power Tool (DHPT - Sub-Surface Hydraulic Casing Jack) to deliver High Force Jacking immediately at the Casing downhole to recover the Lower Completion with Swell Packers without the need for Jarring or Milling operations.

It may be possible to pull the entire lower completion in one trip however if necessary the Lower Completion Can be cut into segments with a conventional downhole mechanical cutting tool and the Casing can be recovered in sections and individually jacked free with the DHPT. The DHPT should allow for recovery in larger sections than conventional cut and pull operations due to the controlled and sustained high force delivered without workstring friction losses.

We have an existing tool available for pulling 4-1/2" Casing inside 9-5/8" Host Casing.

Check out the following links for more details.

https://www.ardyne.co/casing-recovery/down-hole-power-tool

Hope this helps.

____

Notes from moderator: Great response by Ed, who also provided his email address.  We have removed his email address, because we tend to discourage one-to-one contact, since it circumvents the rest of us (who may miss out on useful dialogue)

KenHorne1
Multilateral Specialist
Multilateral Solutions
Total Posts: 36
Join Date: 30/09/13
Trung.

Having recently seen the possibilities and performance of an E-line deployed cutter tool I would consider running in and cutting between each swell packer or pair of packers and then fishing them in bite size chunks.  Once you start attempting to fish them all in one go you may lose the opportunity to go in and cut from the toe to the heel.

Have a look on this case history of seven cuts of drill pipe all in one trip.

http://www.welltec.com/case-story/world-record-e-line-mechanical-cutter-seven-cuts-in-a-single-run/

Regards

Ken..

KenHorne1
Multilateral Specialist
Multilateral Solutions
Total Posts: 36
Join Date: 30/09/13
Hi Trung.

Try this link and see if you can find the string.

http://connect.spe.org/communities/community-home/digestviewer/viewthread?MessageKey=09126253-5dc2-4...

Or type   Recovery of Swellable Packers from Inside Cased Hole  into the search bar on this page.

http://connect.spe.org/home


Regards

Ken.......
Trung-PE
Chief Petroleum Engineer
Japan Vietnam Petroleum Company
Total Posts: 13
Join Date: 07/01/14
Hi Mr. Ken,
I managed to get your post and one experience of pulling 4 x 30-40 cm water swellable elements. That actual data gave us a lot of reference for upcoming design / implementation.
Regards,
Trung
Trung-PE
Chief Petroleum Engineer
Japan Vietnam Petroleum Company
Total Posts: 13
Join Date: 07/01/14
Hi Mr. Peter,
At the time we design the completion, we did not focus much on the P&A as well as limited equipment available for selection. Then it will be the case now or future you have to retrieve Lower completion for setting cement plug across the different reservoirs to prevent cross-flow.
At the moment, due to fish issue, we need to recover the Lower Completion for re-completion then pulling is the first option for study.
Hope to have your understanding and support.
Trung-PE
Chief Petroleum Engineer
Japan Vietnam Petroleum Company
Total Posts: 13
Join Date: 07/01/14
Hi Mr. Pua,
it is nice to hear your advice again. How are you doing?
I expect Swell is much easier than packer since no slip, but like PBR as well.
Luckily the this is Lower completion without SSV, control line, etc.
Surely base on the comment we will look in detail and select the best way, but straight pull seems to be reasonable.
Best regards,
Trung
Trung-PE
Chief Petroleum Engineer
Japan Vietnam Petroleum Company
Total Posts: 13
Join Date: 07/01/14
Hi Mr. Kenhornel,
Thanks for your advice. Yes I am a member of SPE but never look at the SPE technical community yet. Can you share the link for me to quick access then I will go in there often for further information?
Best regards,
Trung
KenHorne1
Multilateral Specialist
Multilateral Solutions
Total Posts: 36
Join Date: 30/09/13
Hi there.  If you are an SPE member and have access to SPE technical communities, you can view a string of answers I received back in 2016 to the following question posted 04.06.2016.

Recovery of Swellable Packers from Inside Cased Hole.

This is an issue we are going to face more often in the near future as they get used more often even on the upper completion on various well designs.


AndyPua
Drilling Consultant
PT Drilling Services
Total Posts: 62
Join Date: 15/09/14
I had never pulled swell packer before, but had pulled many retrievable packer in workover. Some came easy but most of them required heavy jarring, depending on the years it had been in the hole. . 

Rubber element is one thing nobody can predict.
Sometimes even seal elements that sting into Seal Bore Extension could require jarring to free.  And there are 4 swell elements there !!

Swell Provider could mean when you just run it in hole and for some reason want to pull out. Can they predict so accurate after the packer had been there for years ?

To perform straight pull, you have to N/D X-mas tree. Then you have to splice the control line for SCSSV to the Rig Floor. If unable to pull free, then you have to run chemical cutter or whatever through the tubing to cut above the swell packer/s. Hopefully the spliced control line could keep the SCSSV open througout the whole operation. 
If you decide to cut above each swell packer, then it will be easier to cut it with the X-mas tree still on. 
The choice is yours. 

Companyrep
Drilling Specialist/Well Engineer/Training Consultant
Kingdom Drilling
Total Posts: 353
Join Date: 10/01/05
I have not been made aware if this has been implemented or not. Understanding is that swell packers would be a one way lifetime trip surely? Perhaps not.

One has also not clearly stated why lower completion needs to be evidently pulled?

- Vertical higher inclination or horizontal well would change risk somewhat.
- Added formation damage and loss of productivity another aspect to surely consider. 
- Main concern is that something is going to be pulled apart and one would have to go fishing etc.

If reservoir has depleted somewhat then differential pressure may require much higher force that anticipated. My gut feel would be not to go near this with a barge pole. Unless others can provide one with the require evidence that this has been done and has been very successful with few risks presented.

All in all there is not enough evidence presented to have that much confidence how hazards/risks have been assessed and where the evident value of pulling an old completion and recompleting in the same wellbore (That would surely not deliver the same productivity) to where value addition and operational risk are ALARP? 

Pull upper completion, Plug back at liner top, sidetrack and recompletion also to be considered and assessed and perhaps for far longer term value addition and least risked option cost benefits analysis required. 


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