Baoji Changyou Petroleum Equipment Co.,Ltd - Professional ful lbore, full opening, Drill Stem Test(DST) tools manufacturer

Baoji Changyou Petroleum Equipment Co.,Ltd, was founded in 2010, who is specialized in design, manufacturing and sales of oilfield drilling equipments, surface test equipments, downhole well&formation test equipments(drill stem test/DST tools: mechanical&pressure control) and exploration equipment. Except that, we also offer the R&D service to the clients who have special requirements . Our company covers an area of 3,000 square meters, has about 50 experienced workers and 30 professional technicians. With more than 10 years working experience in designing and manufacturing downhole well testing tools, our company has rich design experience, site experience, strong technological innovation and production capabilities.

Fist tools products include(full bore/opening type DST tools): super safety valve(SSV), slip joint, RD(S) circulating valve, drain valve, circulating valve(single&multi), tester valve(normal&lock/hold open), gauge carrier, jar, sampler, safety joint, packers, absorber(horizontal&vertical) and so on.



As a professional equipments manufacturer and producer, Changyou also possesses a number of patents with independent intellectual property, which provide a powerful technical support for our clients.

Our company alwaysdepends on scientific and technological innovation for a better development,with advanced processing equipment, comprehensive test means, products of good quality, and a sound after-sales service provides our costumer with high-quality products. And we always adhere to the principal “Technology decide market” to provide a better service for our customer.


Looking into the future, our people will always follow the corporate culture “Self break-through, Striving for excellence, Never satisfied” and the “Zero defect” business philosophy in the whole production process from design, development, production, supply to execution. Meanwhile, we will always keep pace with the developing of new technology to provide a better service and product to our costumer , and make unremitting efforts to the development of China petroleum manufacturing industry.

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