Finnegan Henderson Farabow Garrett & Dunner LLP
Tool for opening sliding sleeve
A sliding sleeve opening tool includes an engaging element, a ball seat and a guiding head connected in sequence, as disclosed herein. The engaging element includes at least two elastic pawls uniformly disposed in a circumferential direction and at least one engaging part disposed on an external circumferential surface of an elastic pawl, and the engaging element is further provided with a first fluid channel which runs through the engaging element. The ball seat is provided with a second fluid channel which runs through the ball seat, and within the second fluid channel a taper hole section for bearing a sealing ball is disposed, the second fluid channel being in communication with the first fluid channel. The guiding head is provided with a third fluid channel which runs through the guiding head, and the third fluid channel is in communication with the second fluid channel. The sliding sleeve opening tool has at least one of the pushing function, the fishing function, the pushing assistance function, the mud scraping function and the sealing function.
CHINA PETROLEUM & CHEMICAL CORPORATION SINOPEC SOUTHWEST OIL & GAS COMPANY
F F E E E E E
F16C F16C E21B E21B E21B E21B E21B
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Wei Zhenwei Zhi Qiang Tao Zhimin Wenfeng Jian Bin Shunqu
Zhao Gan Xie Wang Liu Hou Pang Pan Qi Hu