Downhole detection system and method

A technology for downhole detection and wellbore, which is used in measurement devices, earthwork drilling, instruments, etc., and can solve problems such as core pollution, discrepancies, and influence of the analysis results of reservoir rock pore structure.

CN106246124AInactive Publication Date: 2016-12-21PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-12-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a downhole detection system and a downhole detection method. The downhole detecting system comprises an annular drill collar, two packers, a CT (Computed Tomography) assembly and a hole drilling machine, wherein the two packers are arranged in the vertical direction, and the packers are used for sealing the annular drill collar and the wall of a well; the CT assembly is installed in the annular drill collar and located between the two packers, and the CT assembly comprises a CT assembly body with a scanning chamber; and the hole drilling machine can move relative to the annular drill collar and take sample of the wall of the well. By installing the hole drilling machine and the CT assembly in the drill collar, direct micro-CT detecting can be conducted after rock samples are sampled, and certain influences on the results of the rock samples caused by different detecting environments are avoided.
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Description

technical field

[0001] The invention relates to the field of exploration of complex reservoirs, in particular to an underground detection system and method thereof. Background technique

[0002] In recent years, with the rapid development of precision instruments, computers and control technology, the application field of CT (Computed Tomography) technology has expanded from the initial medical field to material science, life science and reservoir rock research related to the pore structure of porous media. middle.

[0003] CT can scan the reservoir rock samples, and then obtain the pore structure image of the reservoir rock. The researchers first processed the cores obtained by drilling and coring, and then performed CT scans under laboratory conditions, and then used relevant data processing software to analyze and reconstruct the image data obtained by CT, and then obtained three-dimensional images. Rock image; finally, the information reflecting the rock pore structure...

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Embodiment Construction

[0064] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0065] The invention provides a downhole detection system. refer to figure 1 , Figure 7 as well as Figure 8 As shown, the downhole detection system includes: two packers 11, and the two packers 11 are arranged longitudinally; each packer 11 is used to seal between the annular drill collar 1 and the well wall; 1 and a CT (Co...