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AssigneeHalliburton Energy Services, Inc.
InventorsShobeir Pirayeh Gar, Lonnie Carl Helms, Gavin Graff, Xiaoguang Allan Zhong
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A wiper dart can be used in an oil and gas operation. The wiper dart can have at least two different outer diameters. A first outer diameter can be less than a second outer diameter and used to wipe the insides of tool joints of a tubing string. The second outer diameter can be used to wipe the insides of pipe sections of the tubing string that have a larger inner diameter than the tool joints. The single, bi-diameter wiper cup can be used in lieu of two or more current, conical-shaped wiper cups to accomplish the same functionality. The wiper cup can include a protruding ring located circumferentially around the wiper cup at the first outer diameter. A plurality of buttons or splines can be spaced apart around the wiper cup at the second outer diameter.
A wiper dart comprising:
A system for use in a wellbore that penetrates a subterranean formation comprising:
Dependencies are inferred from the claim text.