Tool pulling device and logging system
The technology of a traction device and an instrument is applied in the field of the instrument traction device and logging system
Active Publication Date: 2020-09-08
PETROCHINA CO LTD
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Problems solved by technology
[0003] However, the logging and post-production testing of horizontal wells has always been a difficult problem in the development of horizontal wells. One of the main difficulties is how to lower the logging instrument to the toe position of the horizontal section.
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[0033] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application.
[0035] It should be noted that when an element is referred to as being “d...
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The invention discloses an instrument traction device and a logging system. The instrument traction device comprises a shell, a base, a motor, an electromagnet attracting-joint mechanism, a transmission mechanism, a pulling rod and a reset piece, and the base is arranged in the shell and provided with the front end and the rear end which are opposite; the motor is arranged at the rear end of the base and provided with a transmission shaft, the electromagnet attracting-joint mechanism is arranged at the front end of the base and comprises an electromagnet and an iron block, the base is providedwith a supporting arm, one end of the supporting arm is arranged on the base in the mode of rotating connection, and the other end of the supporting arm is provided with a rolling wheel; the transmission mechanism is arranged between the transmission shaft and the rolling wheel and used for transmitting output torque of the motor to the rolling wheel; and the pulling rod is connected between theiron block and the supporting arm, and the reset piece is connected between the iron block and the base. According to the instrument traction device and the logging system, a logging instrument can besuccessfully and reliably pulled to the tiptoe position of a horizontal well during logging of the horizontal well.
Description
technical field [0001] The invention relates to the technical field of petroleum logging, in particular to an instrument traction device and a logging system. Background technique [0002] A horizontal well is a well whose inclination angle reaches or is close to 90°, and the wellbore is drilled to a certain length along the horizontal direction. Horizontal wells have the advantages of large production and quick results. Generally, the production of horizontal wells is usually 3-5 times that of vertical wells. At present, major oil fields attach great importance to the development of horizontal wells. [0003] However, the logging after horizontal well drilling and the testing after production have always been difficult problems in the development of horizontal wells. One of the main difficulties is how to lower the logging instrument to the toe position of the horizontal section. [0004] In order to overcome the difficulties in the prior art, it is necessary to provide a...
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IPC IPC(8): E21B23/00
CPCE21B23/00
Inventor 李洪军何金宝张福兴岳鹏飞王巍蒋丹瑶黄丽周艳平吕志武邹振巍赵超
Owner PETROCHINA CO LTD