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Smart Manufacturing for Energy Security.
SJS Ltd. – A Sino-U.S. joint venture with over 30 years of dedicated expertise, serving as a cornerstone in the localization of oil & gas equipment in China.

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Committed to delivering sustainable oil & gas equipment solutions worldwide.
Committed to delivering sustainable oil & gas equipment solutions worldwide.
SJS specializes in the research, development, and manufacturing of oilfield cementing/fracturing equipment, downhole tools, plunger pumps, control systems, environmental protection equipment, and seismic exploration equipment.

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Sinopec Completion Tools Manufacturing Base
Sinopec Completion Tools Manufacturing Base
SJS offers four major product families: bridge plugs, packers, coiled tubing tools, and completion tool accessories. It also provides seven integrated string solutions tailored for advanced applications.

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Total Commitment to Customers Satisfaction

SJS is dedicated to the research, development, and manufacturing of equipment for cementing, fracturing, downhole tools, pumps, intelligent control systems, environmental protection, and seismic exploration. Our products are widely deployed in major oilfields across China and internationally, and have been exported to more than 30 countries and regions worldwide - earning enduring trust from customers globally.

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Image Name
1992 year

Company Established

WELLRICH
30 years

Industry Focus

WELLRICH
255 +

Number of patents

WELLRICH
30 +

Countries Exported to

WELLRICH
Industry expert

Product Center

Industry expert

R&D & Manufacturing

Core Team

Services & Parts

After-sales service

Lean Culture

Media reports

News Center

We specialize in the R&D and manufacturing of equipment and tools for oilfield cementing, fracturing, geophysical prospecting, and environmental protection. Our products are widely used in major oilfields both domestically and internationally, exported to more than 30 countries and regions worldwide, and enjoy a strong reputation among our customers.

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What Is SJS? 2026 Full Guide to Strategic Joint Solutions by Servacorp

2026-07-29

What Is SJS? 2026 Full Guide to Strategic Joint Solutions by Servacorp

This guide covers all key aspects of SJS, the flagship collaborative service offering from SJS Ltd. under the Servacorp brand. We draw on 2026 industry data and hands-on client experience to explain core definitions, real-world use cases, implementation steps, and answer the most frequently asked questions about SJS. You’ll get actionable insights to evaluate if SJS fits your business growth needs.
What Is SJS? Complete 2026 Expert Guide to Servacorp SJS Solutions

2026-07-29

What Is SJS? Complete 2026 Expert Guide to Servacorp SJS Solutions

This 2026 expert guide covers everything you need to know about SJS, the tailored end-to-end enterprise operational solution from SJS Ltd. hosted at en.sjs.servacorp.com. We draw on real client case experience and 2026 industry data to explain core definitions, benefits, implementation steps, and answer the most common questions about SJS.
SJS writes another chapter of success in South America!

2026-02-04

SJS writes another chapter of success in South America!

The offshore cementing equipment independently developed by SJS has successfully completed its first cement pumping operation on a drilling platform in Brazil.
Focusing on Intelligent Data Acquisition and Jointly Exploring the Path of Innovation

2026-02-04

Focusing on Intelligent Data Acquisition and Jointly Exploring the Path of Innovation

Focusing on Intelligent Data Acquisition, Jointly Exploring the Path of Innovation The 2026 China Petrochemical Intelligent Data Acquisition System Technology Symposium was successfully held in Wuhan.
SJS’ independently developed, domestically produced, seismic vibrator successfully passed industrial testing in the 2026 Haxi 3D seismic project.

2026-01-16

SJS’ independently developed, domestically produced, seismic vibrator successfully passed industrial testing in the 2026 Haxi 3D seismic project.

SJS’ independently developed, domestically produced, seismic vibrator successfully passed industrial testing in the 2026 Haxi 3D seismic project.
SJS helped set a new domestic record for staged fracturing operations in ultra-deep wells.

2024-11-28

SJS helped set a new domestic record for staged fracturing operations in ultra-deep wells.

Recently, the fracturing and reservoir‑enhancement operation at Well Zhuangshen‑1, located in Xinjiang, was successfully completed. The operation achieved a peak pressure of 109.1 MPa and a maximum injection rate of 15 cubic meters per minute, setting a new domestic record for staged bridge‑plug‑based multi‑cluster perforation and staged fracturing at a well depth exceeding 7,600 meters.
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