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Cable throwing and withdrawing type drill pipe through logging process

A retractable, cable-based technology that is applied to drill pipes, drilling equipment, measurement, etc., and can solve problems such as highly deviated wells and complex well conditions

Active Publication Date: 2019-10-01
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the present invention provides a wireline throw-in type through-drill pipe logging process to solve the problems of extended displacement horizontal wells, large vertical ratio horizontal wells, highly deviated wells, and complex well conditions

Method used

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  • Cable throwing and withdrawing type drill pipe through logging process
  • Cable throwing and withdrawing type drill pipe through logging process

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Embodiment Construction

[0045] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.

[0046] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0047] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".

[0048] figure 1 It is a structural schematic d...

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Abstract

The invention discloses a cable throwing and withdrawing type drill pipe through logging process and relates to the field of geophysical well logging. The process comprises the following steps: S1, running a drilling tool into a well; S2, connecting a logging instrument at a mouth of the well; S3, conveying a logging instrument string; S4, landing and releasing the logging instrument string; S5, withdrawing a cable; S6, pulling out the hole for logging; and S7, withdrawing the instrument. The process solves the problems of a large displacement horizontal well, a large displacement-perpendicularity ratio horizontal well, a highly-deviated well and complex well conditions.

Description

technical field [0001] The invention relates to the petroleum and geological exploration industry, especially the field of geophysical well logging, in particular to a cable throwing and receiving type through-drill pipe logging technique. Background technique [0002] In the late stage of oilfield development, the exploration and development objects are becoming more and more complex, and the number of horizontal wells, 3D circumvention wells and extended-reach wells is increasing year by year. When drilling, in order to reduce costs and increase efficiency, the casing should be run as little as possible, the kickoff point will also become shallower, and the curvature of the wellbore will become larger. Moreover, the geological conditions are also complex, resulting in an increase in complex and harsh well conditions such as leakage, collapse, diameter expansion, steps or threaded boreholes. [0003] In logging while drilling, the logging instrument is installed on the dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B17/02
CPCE21B47/00E21B17/023Y02A90/30
Inventor 曹宇欣童茂松孙旭光史金安历程军顾鹏程赵龙侯树山
Owner BC P INC CHINA NAT PETROLEUM CORP
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