External hung type focusing probe

A plug-in, probe technology, used in wellbore/well components, earth-moving drilling, etc., can solve the problems of complex probe structure, and achieve the effects of good compatibility, simple structure, high stability and reliability
CN102425412BActive Publication Date: 2014-03-05CHINA NAT OFFSHORE OIL CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NAT OFFSHORE OIL CORP
Publication Date
2014-03-05

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Abstract

The invention discloses an external hung type focusing probe. The defect of the prior art that a probe structure in a double fluid channel structure is complex is overcome. In the external hung type focusing probe, a side wall of a cover-shaped part of a sealing hydraulic probe is connected with a connecting block, and a second connecting pipe is arranged between the connecting block and the side wall of the cover-shaped part of the sealing hydraulic probe. The embodiment of the invention provides an external hung type double fluid channel, wherein an outer-layer fluid channel is arranged on the exterior of a probe main body. The bottom fluid with higher purity can be obtained within a shorter time and the demand of exploration and development is more effectively met.
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Description

technical field

[0001] The invention relates to an earth exploration instrument, in particular to an external focusing probe. Background technique

[0002] Obtaining high-purity undisturbed formation fluid during drilling is of great significance to the exploration and development of oil and gas fields. Affected by the mud filtrate, it is often very difficult to obtain high-purity undisturbed formation fluid with the existing probe equipment, mainly because the filtrate is continuously mixed into the formation fluid. In order to obtain the required formation fluid, it takes a lot of time to eliminate various fluids that have been contaminated by the filtrate. This not only increases the cost of exploration and development, but also increases the difficulty of operation.

[0003] On the other hand, currently existing probes include different forms of single-fluid channel structure and double-fluid channel structure, but the current single-fluid channel structure cannot meet...

Claims

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