Differential pressure sliding sleeve, and oil and gas well fracturing construction method using same

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12215580
APP PUB NO 20240218773A1
SERIAL NO

18563069

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Abstract

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A differential-pressure sliding sleeve has an outer cylinder with a flow guiding hole being provided in a wall of the outer cylinder, an inner cylinder arranged in an inner cavity of the outer cylinder, an upper joint extending into the outer cylinder and fixedly connected to an upper end of the outer cylinder, a lower joint extending into the outer cylinder and fixedly connected to a lower end of the outer cylinder, and a dissolvable carrier ring arranged between the lower joint and the inner cylinder. An area of the axial upper end surface of the inner cylinder is greater than that of an axial lower end surface thereof, so that the working fluid generates a pressure difference to provide downward pressure for the inner cylinder, which moves downward under the pressure after the carrier ring is dissolved to open the flow guiding hole.

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Patent Owner(s)

Patent OwnerAddress
CHINA PETROLEUM & CHEMICAL CORPORATIONNO 22 CHAOYANGMEN NORTH STREET CHAOYANG DISTRICT BEIJING 100728
SINOPEC SOUTHWEST OIL & GAS COMPANYNO 688 JITAI ROAD HI-TECH INDUSTRIAL DEVELOPMENT ZONE CHENGDU SICHUAN 610041

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Chen Sichuan, CN 720 3975
Cui, Jingyu Sichuan, CN 54 972
Hou, Zhimin Sichuan, CN 7 4
Hu, Dan Sichuan, CN 68 579
Hu, Shunqu Sichuan, CN 5 3
Lei, Wei Sichuan, CN 68 1081
Lin, Yongmao Sichuan, CN 3 2
Wang, Qiang Sichuan, CN 762 5596
Xie, Zhi Sichuan, CN 10 19
Zhao, Wei Sichuan, CN 814 5746

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