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Proven Best Practices Reservoir Engineering Monthly |
September 2014 - Volume 9 Issue 7
Watch that Abandoned Well
That abandoned well nearby may stop you from injecting. Even if it’s not owned by you.
Reacting to recent steam leaks to surface, the AER has begun watching for injection containment problems in water floods, disposal wells, SAGD and CSS projects.
The AER now requires applicants of ER Schemes to assess abandoned wells in their area. They also require notification of abandoned well owners.
This is just one change from the new version of the AER’s Direction 065 released last month.
The concern with migration out of zone is three fold. The AER doesn’t want any contamination of ground water. They want injection contained in the intended formation. They don’t want any migration of injection fluid to surface.
The regulator has also become much more interested in operator’s opinions about potential steam and fluid leaks out of zone.
Although SAGD operators have been required to assess abandoned wells within their scheme for several years, the AER is reaching new levels of scrutiny. The regulator has recently started asking SAGD applicants to review subsurface faults and their potential impact on injection performance and steam containment.
To mitigate concerns about disposing out of zone, the AER has even changed their assignment conventions. They are changing the disposal scheme owner automatically when well licences are transferred. This way they hope to keep on top of disposal wells and keep accountability for well head injection pressures.
~Granger J. Low
Programming
Gavin Low is an Engineer in Training at Proven Reserves, and an integral part of the company’s software development effort.
Gavin has recently earned his degree in engineering from BCIT, and also has a CIT certificate from Lethbridge College.
Gavin was born in High Level, Alberta, but was raised in Calgary.
He enjoys programming, drawing and other creative projects, gaming and video game collecting, and spending time with friends.
Here at Proven, Gavin is working on water flood optimization and AER applications as well as enhancing his computer programming skills, and wants to learn more about PLC, DCS, and micro-controller systems.
Thanks, Gavin!
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