High Pressure Type L Packer Type Casing Patches

1 high Pressure Type L. Packer Type Casing Patches Manual F635. Contents Logan high Pressure Type L Packer Type Casing Patches Uses ..2. Construction ..2. To Engage a Salvaging Stuck To Release From a Maintenance ..3. Disassembly ..4. Assembly ..4. 7K, 10K, and 12K Tool Illustration ..5. 7K Assembly: Specifications and Parts Lists ..6 7. Strength Data ..8 12. 10K Assembly: Specifications and Parts Lists ..13. Strength Data ..14 17. 12K Assembly: Specifications and Parts Lists ..18. Strength Data ..19 22. 15K Tool Illustration.

2 23. Specifications and Parts Lists ..24. Strength Data ..25 26. November 2013. Rev. 2. 1 Logan high Pressure Type L Packer Type Casing Patches Manual F635 Logan high Pressure Type L Casing Patch Page 1. OVERVIEW CONSTRUCTION As tensile load is applied and increased Logan high Pressure Type L Packer The Logan high Pressure Type L Pack- on the bowl, the tapered helices be- Type Casing Patches are designed to er Type Casing Patch is very similar in tween the bowl and the basket grap- engage and seal off a properly prepared design and construction to the Logan ple's outside diameter cause the basket Casing string.

3 The Casing Patch design Series 150 Overshot. A top sub, exten- grapple to tightly engage a large area leaves the operator with a Casing string sion sub (optional), bowl, and cut-lipped of the fish. that has a full-bore internal diameter. guide make up the outer components The basket grapple control acts as Logan high Pressure Type L Packer of the assembly. A basket grapple con- a key that transmits torque from the Type Casing Patches will not restrict trol, basket grapple, four Logan Type bowl to the grapple while allowing the the bore of the Casing and are available L packers , Packer protector, and shear grapple to move vertically inside the in popular Casing sizes from 4-1/2 to pins are components inside the as- bowl during operation.

4 13-5/8 inches OD. Larger size Casing sembly. Major load bearing components Patches are available upon request. are manufactured from 4140 alloy steel. Extension subs are used when the up- The Type L packers are composed of per portion of the fish is damaged and The Logan high Pressure Type L Pack- can not be engaged. Additional exten- a blend of synthetic rubber and Kevlar er Type Casing Patches are available sion subs will permit the Casing Patch material that is compatible for service in 7,000, 10,000, and 12,000 psi work- to be lowered far enough over the fish with most drilling and completion fluids, ing Pressure ratings and are designed to ensure secure engagement and pack and is resistant to gas invasion and to seal both internal and external pres- off.

5 Extension subs are five feet long. abrasion. sure. Lower and higher Pressure Casing Patches of this design are available The top sub is the uppermost compo- After the fish is engaged and passed upon request. Logan also manufactures nent of the Casing Patch assembly. into the extension sub, the uppermost a high Pressure Casing Patch that is Packer provides a second seal around The bowl is the major working com- the fish. rated at 15,000 psi working Pressure . ponent of the Casing Patch. The inside Logan high Pressure Type L Packer diameter of the bowl features a tapered The Packer protector prevents the Type Casing Patches are available helical section that conforms to the upper lip of the Packer from being dam- with or without five-foot extension subs.

6 Exterior tapered helix of the basket aged when the fish enters the Packer . Extension subs allow sufficient length grapple. This design permits any expan- Shear pins hold the Packer protector to catch the Casing by pulling additional sion or compression strain to be evenly in place until it is displaced by the fish. length into the Casing Patch. distributed over the entire working When the Casing enters the Casing surface of the bowl, basket grapple, and patch, it will make contact at the bottom The Type L Packer is made from the fish ( Casing that is to be engaged of the Packer protector and cause the hydrogenated nitrile (HBNR) compound during a Casing landing operation).

7 Any Packer protector to slide upward. and is rated at 275 F (dry, with no possible damage to the fish or Casing The lowermost component of the Cas- circulation) and at 325 F (with partial Patch is thereby minimized. ing Patch assembly is the cut-lipped circulation. guide. As the name implies, it guides The bowl contains and supports the load-bearing basket grapple. The the fish into the internal gripping mecha- USES nism (basket grapple) of the Casing basket grapple is the gripping mecha- Logan high Pressure Type L Packer nism of the Casing Patch.)

8 The basket Patch. The guide also minimizes pos- Type Casing Patches may be used to grapple is a slotted, expandable cylin- sible damage to the Casing Patch by patch any Casing , but is specifically der that freely opens to allow the fish to blocking the entry of a fish that exceeds intended for use in Casing landing op- enter and securely engages it with the its maximum Casing OD. erations on the sub-surface wellheads hardened wickers of its inside diameter. of offshore installations. Its tapered exterior conforms to the Logan high Pressure Type L Packer interior of the bowl.

9 Type Casing Patches for H2S (sour service) are available upon request. Logan high Pressure Type L Packer Type Casing Patches 2. Page 2 Logan high Pressure Type L Casing Patch Manual F635. OPERATION CAUTION: Carefully and gradually Locate the first collar below the To Engage a Fish increase the pump Pressure to allow wellhead. Cut the Casing immediately Prior to operation, check the Logan the Packer to seat smoothly. Under below this collar with a Logan Hydrau- high Pressure Type L Packer Type Cas- no circumstances should the Casing lic Internal Cutter.

10 Remove the upper ing Patch to assure that it is complete Patch be shock loaded (slugged) by portion of the Casing from the well. Pick and properly assembled. Proper prepa- the mud pumps. up the remaining portion of Casing with ration of the Casing to be patched is the Logan high Pressure Type L Packer Once the fish has entered the Cas- important to the success of the Casing Type Casing Patch, pull it up into the ing Patch and dislodged the Packer Patch. The Casing should be washed wellhead and lock it in position. protector, and the tool is subsequently over to remove scale and splits, and the disengaged from the fish, no attempt After the cement cures, additional pipe sized for a uniform sealing surface.