China Oilfield Services, Limited

China National Offshore Oil Corporation

Xiaofei Qin

Yongren Feng

Lin Huang

Xiaodong Chu

Xingfang Wu

Tao Lu

Qiang Yu

Zhibin Tian

Tiemin Liu

Zanqing Wei

Minggao Zhou

Jibin Zou

Yongzeng Xue

Yongchao Chen

Yang Shen

Zhongli Bao

Wanguang Song

Changgui Xu

Youxiang Zuo

Sun Kong

Lei Wang

Yuqing Yang

Provided are a method and system for measuring a composition and property of a formation fluid. The method includes: acquiring a measuring model used for measuring a composition and a property of a formation fluid; using a signal measured by a sensor on a downhole hydrocarbon formation tester in real-time as input data and inputting the input data into the measuring model; processing the input data by the measuring model; and directly outputting a processing result as data on the composition and the property of the real-time formation fluid, or parsing the data on the composition and the property of the real-time formation fluid according to the processing result.

Method and system for measuring composition and property of formation fluid

An integrated logging instrument for coring and sampling includes a downhole main body and a ground system. The downhole main body is connected with the ground system through a long cable. The downhole main body includes a coring and sampling mechanism, a power mechanism and an energy storage mechanism. The coring and sampling mechanism includes a coring assembly for drilling cores and a pushing and setting assembly for downhole fixation. The power mechanism is arranged at an upper end of the coring and sampling mechanism, and includes a motor, a piston structure and a pump body. The piston structure and the pump body are respectively arranged at two output ends of the motor. The piston structure is arranged to provide suction power. The pump body is arranged to provide hydraulic power. The energy storage mechanism is arranged at a lower end of the coring and sampling mechanism.

Integrated logging instrument for coring and sampling

A connecting structure for a drill collar of a logging while drilling instrument and drill collar sub male and female joints are provided. The connecting structure for a drill collar of a logging while drilling instrument includes a male connecting joint and a female connecting joint matched with each other. The male connecting joint and the female connecting joint are rotatable relative to each other. Electrical passages are respectively arranged in the male and female connecting joints. One of the male and female connecting joints is provided with a multi-core coaxial electrical male connector connected with the electrical passage, and the other is correspondingly provided with a multi-core coaxial electrical female connector connected with the electrical passage. The male connecting joint is coaxially nested in the female connecting joint. The multi-core coaxial electrical male connector is inserted into and fitted to the multi-core coaxial electrical female connector.

Connecting structure for drill collar of logging while drilling instrument and drill collar sub male and female joints

A pushing and jam-releasing pup joint of a formation tester comprises a first jam-releasing arm (), a first three-way reversing valve (V), a two-way reversing valve (V) and a third three-way reversing valve (V), a withdrawal cavity (Q) of the first jam-releasing arm () is connected with the first three-way reversing valve (V) which can communicate with an energy accumulation cavity (NQ) of an energy accumulator and the two-way reversing valve (V), the two-way reversing valve (V) can be communicated with a pressure oil main line (G) of a hydraulic system, and an extension cavity (Q) of the first jam-releasing arm () is connected with the third three-way reversing valve (V) which can communicate with the pressure oil main line (G) and a return oil main line (G) of hydraulic system. Jam-releasing pup joint effectively solves the problem of jam release when mud adheres to EFDT and makes same jammed.

Pup joint for releasing sidewall contact of stratigraphic test device and apparatus

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Sanhe, China

Xiaofei Qin