Embed Size (px)
Citation preview
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Alternative testing methodfor wireline tools
By Henning [email protected]
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
The need for demonstrating new technologies prior to taking this into use in “real” wellbores
• Trying out new wireline technologies in live deep wellbores, not at least offshore, can be a very costly task
• There is always a risk of damaging the wellbore, tool malfunction, tool getting stuck (stopping oil production), etc.
• Due to these factors, we often experience a strong reluctance of implementing new “untried” technologies
• “Come back when you have demonstrated success in someone else’s wellbore”
• Therefore, we propose an alternative method that should lower the fear of introducing new technologies
• Use deep water to provide distance (from operator to tool) andhydrostatic pressure
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
We have deep oceans, lakes and fjords all over the world
• There are typically deep water available in close proximity to us
• In many cases way deeper than any test wells available
• Smaller vessels, like for example fishing or supply vessels, are low cost to hire
• Use this infrastructure to improve testing prior to deploying new technologies into your client’s wellbore
Note: The method herein described is not patented, and I have no intention of doing so. It is for the common benefit for suppliers and operating companies to lower the barriers for introducing new technologies into the oilfield. I believe the method described will help us all.However, if you want us to help you plan and execute testing according to these ideas, we will gladly do that.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Alternative testing method, where deep water is used instead of costly wellbores
1. Perform repeated testing in workshop
- Tool is not out of view for operator
- Tool is close to surface control system
- Tool is not “at depth”
+ Tool functions can be closely observed
+ Problems can quickly be corrected
+ Low cost
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Alternative testing method, where deep water is used instead of costly wellbores
2. Perform testing in land test well
- Access to test well
- Well may not be deep enough
- Tool may be stuck downhole, resulting in significant costs of retrieving tool
+ Tool is downhole
+ Problems can relatively quickly be corrected
+ Medium cost
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Alternative testing method, where deep water is used instead of costly wellbores
3. Perform testing in clients offshore well
- High risk
- Tool may be stuck downhole, resulting in significant costs of retrieving tool, including possibility of loosing well
- Tool may malfunction, resulting in high cost (for nothing)
+ Tool is downhole, at required depth
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Alternative testing method, where deep water is used instead of costly wellbores
4. Perform testing in deep water, using low cost vessel
- May not achieve similar depth as client wellbore
+ Tool is at significant depth
+ Tool is out of operators view
+ Relatively low cost
+ No risk of damaging or loosing client well
+ Visual observation of tool operations possible
Note: The method herein described is based on doing the testing at minimum cost, and therefore I have not included any ROV for the testing. Simply because it is fully possible to do it without such a unit.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Deployment of a wellbore tubing string, set on the seafloor
Not to scale (Of course!)
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Release to surface wire to guide WL tool into test tubing
Slack off deployment wire, and let ocean currents move this away.Release float and bring wire to surface.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Release to surface wire to pull WL tool into test tubing
Release 2nd float and bring wire to surface. Bring 1st wire into vessel, and pull tension on this.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Attach and deploy WL tool into the water
Connect WL tool to deployment wire. Pull this into the water by pulling on wire exiting lower end of test tubing.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Deploy WL tool into test tubing, and perform testing
Pull WL tool into tubing, and perform required testing.Use external video cameras to observe any tubing protruding operations.
© 2
015
Aar
ba
kke
In
nov
atio
n A
S
Thank you for your attention
Henning [email protected]+1 281 882 3941+47 9024 0910
Aarbakke Innovation – High impact innovations
