To cut 0.125-in OD GD31MO wire at rope socket to enable the retrieval of stuck toolstring.
Producer (65 degrees deviation)
2.2-in Peak eCutter electronically activated nonexplosive wireline cutter
During drift run operations to determine the depth of a third party retrievable bridge plug downhole, the drift assembly was unable to retract through the 5 ½-in x 4 ½-in completion crossover rendering it stuck downhole at a depth of 2,349 m at 65 degrees deviation.
A cutter was required to free the wire (0.125-in OD GD31MO) exactly at depth allowing it to be retrieved back to surface.
The following key requirements and concerns were highlighted:
After careful review of the well design and discussion with the customer, the preferred option for cable release was to deploy the 2.2-in Peak eCutter cutter and pump down go-devil assembly with 3.65-in swab cups to ensure the cutter reached the correct depth and cut at the rope socket which was located at 65 degrees of deviation.
An onshore demonstration of the Peak eCutter cutter was carried out at Peak’s Technology Centre in Aberdeen to provide the customer with a thorough understanding of how the cutter functioned. A Peak Engineer was then mobilized offshore with the Peak eCutter cutter via sea to conduct further tests onsite prior to the live operation.
The Peak eCutter cutter was set to delay for a period of six (6) hours before being deployed downhole followed by the pump down go-devil assembly that pumped slowly at 3 bbls/min enabling the Peak eCutter cutter to reach the required cutting depth of 2,349 m (93 degC, 1,600 psi). After six (6) hours, the Peak eCutter cutter was activated and successfully cut the wire at the rope socket whilst at the same time gripping the severed wire.
Both the Peak eCutter cutter and pump down go-devil assembly were then retrieved to surface along with the wire allowing the customer to continue with their planned sidetrack.
Value to Customer:
All operations were carried out safely and efficiently: