The Flow-Release GS Spear provides a reliable method of attaching to and retrieving tools with an internal “GS”- type fish neck.
To latch onto a fish neck, the tool is ran to depth and landed off in the GS profile. The downward movement retracts the grapple allowing it to snap into the profile. Circulation may also be established through the tool prior to making engagement with the fish. This will set the tool in the release position and the resulting flow can help keep the GS profile. When the pump is stopped, the tool will return to the latched position and the assembly can be retrieved to surface.
To release the tool from the fish neck, weight is set down on the BHA and the flow rate is increased. Flow through the tool creates back pressure which acts on an internal piston, causing the grapple to retract into the release position.
The orifice is easily accessible and can be changed so that the release pressure is attained at the desired flow rate.
- Simple, Robust Design With Minimal Number of Components
- Flow-Through Capability
- Interchangeable Orifices
- Easily Field Redressable
|Tool OD||Tensile Yield||Nominal F/N Size||Standard Connection|
|Ø1-½"||26,500 lbs||1-½" GS Profile||1.000" AMMT|
|Ø1-11/16"||40,500 lbs||2.000" GS Profile||1.000" AMMT|
|Ø2.000"||56,000 lbs||2.000" GS Profile||1-½" AMMT|
|Ø2-1/8"||88,000 lbs||2-½" GS Profile||1-½" AMMT|
|Ø2-7/8"||155,000 lbs||3.000" GS Profile||2-3/8" PAC|
|Ø3-5/8"||244,000 lbs||4.000" GS Profile||2-3/8" PAC|
|Ø4-7/16"||244,000 lbs||5.000" GS Profile||2-3/8" PAC|
|Ø5-½"||244,000 lbs||6.000" GS Profile||2-3/8" PAC|