Method for Increasing the Roughness of Injector Gripper Blocks for Coiled Tubing Operations

摘要

A method of increasing a roughness of coiled tubing injector blocks that includes providing a pair of gripper blocks each having a gripper surface configured to grip coiled tubing within an injector head and increasing a first roughness on the gripping surfaces to a second roughness. A coating may be applied to the gripping surfaces to increase the roughness. The coating may be chromium carbide, molybdenum boride, iron boride, titanium boride, or a transitional metal boride. The gripping surfaces may be treated to increase the roughness to a second roughness. The gripping surfaces may be blasted by abrasives or shot peened to increase the roughness. The second roughness may be greater than 20 μm. A system to inject coiled tubing into a wellbore may include an injector head, coiled tubing, and at least two gripper blocks having a gripping surface with a roughness of at least 20 μm.

主权项

1. A method of increasing a roughness of coiled tubing injector gripper blocks comprising:
providing a pair of gripper blocks, the pair of gripper blocks each having a gripping surface with a first roughness, the gripping blocks configured to grip coiled tubing within an injector head; and increasing the first roughness on the gripping surfaces of the pair of gripper blocks to a second roughness.