Downhole rock debris extraction system and control method thereof

An extraction system and control method technology, applied in the field of downhole cuttings extraction system and its control, can solve the problems of difficult operation, no solution proposed, high cost, etc.

Pending Publication Date: 2018-12-04
CNPS PETRO EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is more accurate than sampling, but the cost is extremely high, it is not easy to operate, and the amount of completion is small
[0004] For the problems existing in related technologies, no effective solutions have been proposed yet

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  • Downhole rock debris extraction system and control method thereof
  • Downhole rock debris extraction system and control method thereof
  • Downhole rock debris extraction system and control method thereof

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Embodiment Construction

[0050] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0051] It should be noted that the terms "first" and "second" in the description and claims of the present application and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances for...

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Abstract

The invention discloses a downhole rock debris extraction system and a control method thereof. The control method comprises the steps that a ground control module determines a first corresponding relation between depth information of the well depth and time in real time, and then marker jet information is sent down to a downhole marker module; according to the marker jet information, the downholemarker module sprays markers onto rock debris produced by excavation through an excavation bit; the ground control module determines a second corresponding relation between marker jet time and the types of the markers in real time, a ground detection and extraction module is controlled to carry out marker detection on the extracted rock debris, and the types of the markers are determined; the ground control module determines original depth information corresponding to the rock debris according to detection results, the first corresponding relation and the second corresponding relation; and therequirements of high detection ageing and simple and easy operation for downhole rock debris extraction can be effectively met, and meanwhile, the control method can achieve the purpose of accurate sampling, low sampling cost and high completed amount.

Description

technical field [0001] The present application relates to the technical field of downhole rock sampling, and in particular, relates to a downhole cuttings extraction system and a control method thereof. Background technique [0002] During the underground exploration of various drilling, it is necessary to sample the material returned from the downhole for analysis and research. Real-time extraction of downhole materials is an intuitive material for timely understanding of formation lithology and oil and gas layers. Downhole material sampling is obtained from the mud that returns upwards. The traditional method is to obtain the downhole material corresponding to the depth. It is necessary to calculate the time for the material to return from the bottom of the well to the wellhead through theoretical calculations, physical measurement methods or special lithology methods. . There are serious problems in these methods. The upflow of materials is greatly affected by the flow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00E21B21/01E21B21/06E21B47/002E21B47/04E21B49/02
Inventor 宋祥魏兵孙立立
Owner CNPS PETRO EQUIP CO LTD
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