Why peak
Real Results
FISHING E-Line Tractor & Mill Assembly recovered
- Location: Angola
- Client: Esso / Aker Qserv
- Well Type: Producer
- Depth: 2,562 metres
- Max Deviation: 66 degrees @ 2,977 metres / 59.8 deg @ 2,039 metres
- Tubing Details: 5-1/2
- Tooling Information: Highlights - Peak Power Jar, HD-FRC Pulling Tool & Non-Releasable Overshot
Background
While trying to mill the Parker Sub at 2,562m using an E-Line conveyed Tractor & Mill assembly, the toolstring became stuck. The E-Line cable head weak point was pulled and all wire recovered leaving a very expensive fish in the well with locked in production. Prior to the fishing package deployment and in conjunction with AkerQserv, Peak conducted several onshore acceptance tests to determine best grapple point & simulate the jarring / recovery operations. All of the tools were tested successfully & the AkerQserv Peak Ultra Heavy Duty (UHD) Package was mobilised.
Challenge
The major task was to recover the high cost rental Tractor and Milling Assembly stuck in the well so milling operations could be resumed and the well returned to production. There were delicate components to the Tractor & Mill Assembly and jarring too hard too soon could potentially break the tools and make further fishing extremely difficult.
Sequence of Events
Peak designed, manufactured & tested contingent recovery tools including 4.500" Extended Overshot to fish 4.000" OD, 3.350" Non-Releasable Overshot to engage 1.460" OD and a 3.150" Non-Releasable Replacement Rope Socket to engage the 1.000" Titan Fish Neck to facilitate heavy jarring. AkerQserv were mobilised from the UK to supply a Peak Ultra Heavy Duty (UHD) fishing package with a Peak Fishing Specialist. Operations commenced and the Peak 3.350" Non-Releasable Overshot with Dual HD Fish neck (2.375" - 2.500" Slips) was planted onto the fish and the Peak 2.600" HD-FRC with 3.200" Integral Bell Guide was then run to engage the 3.350" Non-Releasable Overshot. At surface, the Peak Power Jar was set to fire at 1500lbs. The Power Jar was fired 37 times downhole and the Tractor & Mill assembly was recovered.
Peak Toolstring Configuration
2-1/2" Shear Pin Weak Point Rope Socket (5/16" Steel Pin)
2-1/2" Low Load Accelerator
2-1/2" Knuckle Joint
2-1/2" x 3ft Stem
2-1/2" Peak Power Jar (1500lbs)
2-1/2" Linear Jar
Value to Client
All operations were carried out without delay or incident & the high cost, rental / lost in hole tools were recovered allowing the well intervention programme to be resumed and move closer to returning the well to production.
For more information please contact us.
