US 11,885,201 B2
Sliding sleeve
Zhenwei Gan, Chengdu (CN); Bin Qi, Chengdu (CN); Shunqu Hu, Chengdu (CN); Zhimin Hou, Chengdu (CN); Yongmao Lin, Chengdu (CN); Tao Liu, Chengdu (CN); Chen Chen, Chengdu (CN); Lei Wang, Chengdu (CN); Dan Hu, Chengdu (CN); and Jiang Qian, Chengdu (CN)
Assigned to China Petroleum & Chemical Corporation, Beijing (CN); and Sinopec Southwest Oil & Gas Company, Sichuan (CN)
Appl. No. 16/071,111
Filed by China Petroleum & Chemical Corporation, Beijing (CN); and Sinopec Southwest Oil & Gas Company, Chengdu (CN)
PCT Filed Jan. 13, 2017, PCT No. PCT/CN2017/071166
§ 371(c)(1), (2) Date Jul. 19, 2018,
PCT Pub. No. WO2017/124978, PCT Pub. Date Jul. 27, 2017.
Claims priority of application No. 201610036843.6 (CN), filed on Jan. 20, 2016; application No. 201610037103.4 (CN), filed on Jan. 20, 2016; application No. 201610037341.5 (CN), filed on Jan. 20, 2016; application No. 201610037797.1 (CN), filed on Jan. 20, 2016; application No. 201610038915.0 (CN), filed on Jan. 20, 2016; and application No. 201620054067.8 (CN), filed on Jan. 20, 2016.
Prior Publication US 2021/0189833 A1, Jun. 24, 2021
Int. Cl. E21B 34/14 (2006.01); E21B 34/06 (2006.01); E21B 43/26 (2006.01)
CPC E21B 34/14 (2013.01) [E21B 34/063 (2013.01); E21B 43/26 (2013.01); E21B 2200/06 (2020.05); E21B 2200/08 (2020.05)] 25 Claims
OG exemplary drawing
 
1. A new sliding sleeve, comprising an upper connector, a lower connector, an outer housing, an inner sleeve and a shear pin,
wherein the upper connector and the lower connector are respectively connected to two ends of the outer housing, and the inner sleeve is locked in the outer housing via the shear pin;
wherein a flow guiding hole is provided in the outer housing, and the inner sleeve can open or close the flow guiding hole; and
wherein at least one groove for engaging with at least one corresponding tooth-shaped element on a sliding sleeve opening tool is disposed along an axial direction in the inner sleeve, and an erosion-resistant ring is embedded in the groove, with an inner diameter of the erosion- resistant ring being larger than or equal to an inner diameter of the inner sleeve.