US 2026/0243167 A1 · SAMPLING DEVICE AND ONLINE SURVEYING AND MAPPING SYSTEM

Sampling device and online surveying and mapping system

AssigneesChina Petroleum & Chemical Corporation, Sinopec Oilfield Service Corporation, Sinopec Shengli Petroleum Engineering Co., Ltd, Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd

InventorsYanjun ZHOU, Zhongshuai CHEN, Xueliang PEI, Zhihe LIU, Kai TAN, Feng LIU, Chuanwei ZHAO, Yanwen WANG, Guiting WANG, Haobo LI

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Abstract

A sampling device and an online surveying and mapping system has a ground control unit for transmitting a control command downhole and a downhole unit. The downhole unit includes a housing; a downhole control assembly for receiving the control command from the ground control unit to control sampling and online surveying and mapping operations; a probe assembly configured to draw a sample of a formation; a power system for driving the probe assembly to draw samples; a tank assembly for storing qualified formation samples; a contamination-rate evaluating assembly for determining whether a contamination rate of the sample of the formation is qualified and discharging unqualified sample of the formation while delivering qualified sample of the formation to the tank assembly; and a fluid-parameter measuring assembly for measuring parameters of the sample of the formation in the tank assembly and transmitting measured data to the ground control unit.

Claims16

Dependent claims

A sampling device, comprising:

a housing comprising a body and a sampling drill collar;
a sampling assembly arranged in the sampling drill collar, comprising a probe assembly, which includes an external probe support mechanism and an internal probe, wherein the probe support mechanism is provided at a bottom thereof with a push piston, for driving the probe to extend in a radial direction relative the sampling drill collar;
and
a power assembly and a suction assembly arranged on the body,
wherein the power assembly is configured to push the probe outward in the radial direction into a formation via the push piston, and the suction assembly is configured to draw fluid sample from the formation via the probe, and
the sampling assembly further comprises a recovery mechanism, for driving the probe to retract after drawing.

3 more elements

Dependencies are inferred from the claim text.