WIRELINE FISHING
What are Wireline Fishing tools?
They are devices that are connected at the end of the wireline string for providing required fishing functions
Pulling Tool
• It’s required to unlock and pull the mandrel.
• It’s attached to the base of a tool string.
• It’s run on the pulling neck of the mandrel.
• By jarring, the mandrel is unlocked.
Indexing Tool
• Indexing Tool allows 360 degree rotation of fishing tools as required.
• The rotation is achieved by means of an indexing shoe and ‘J’ Slot mechanism activated by manipulation of the wireline string.
Wireline Spear
• It has several arms with upward hooks.
• It’s used when a wireline breaks inside the tubing.
• The aim is to recover the tool string or cut the wireline from top of the rope string to epose the fishing neck.
Bulldog Spear
• The Bulldog Spear is a simple internal grapple used for retrieving debris without a suitable fishing neck.
• Their simple design makes them both cost effective, reliable and they can be supplied from 0.5" to 7" engagement.
Bell Guide
• Bell Guides are attached by threads to the skirts of pulling tools / overshots to assist in latching the fishing neck / O.D. of the device to be retrieved.
• They can be supplied in a variety of sizes and designs to suit particular applications.
Wireline Finder
• This tool is designed to locate the end of a wireline broken in the well.
• It complements the wireline grab in fishing operations.
WIRELINE PERFORATION
Wireline Perforating Anchor Tool (WPAT)
It can be used for the following applications:
• Underbalanced perforation in small casing sizes.
• Memory gauges run below perforating guns for the determination of crossflow or depletion.
• Enhanced cleanup because the well can be flowed immediately after perforating underbalanced.
Wireline Oriented Perforating Tool (WOPT)
It can be used for the following applications:
• Fracture plane perforation.
• Minimize fracture pressure.
• Minimize sand production.
• Directional cement squeeze
• Oriented core sampling.