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A Wireless Magnetic Sign Acquisition System for Well Logging Cable

A technology of acquisition system and magnetic marking, applied in signal transmission system, measurement, earthwork drilling, etc., can solve the problems of unreliable magnetic marking signal transmission, reduced construction intensity, low measurement accuracy, etc., and achieves good anti-interference, The effect of reducing failure rate and accurate measurement

Active Publication Date: 2017-02-22
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

[0003] The purpose of the present invention is to solve the above problems, and to provide a wireless magnetic mark for collecting and processing the magnetic marks on the logging cable and sending them to the ground instrument of the logging vehicle in a wireless manner during the oil and gas well logging process. Acquisition system, which can solve the problems of unreliable transmission of magnetic marker signals, large interference, low measurement accuracy and high failure rate in the logging process of oil and gas wells in low temperature environment. At the same time, the invention can reduce the construction intensity

Method used

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  • A Wireless Magnetic Sign Acquisition System for Well Logging Cable
  • A Wireless Magnetic Sign Acquisition System for Well Logging Cable
  • A Wireless Magnetic Sign Acquisition System for Well Logging Cable

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0022] see Figure 1 to Figure 3 , the present invention includes a magnetic mark transmitter installed at the wellhead and a magnetic mark receiver installed in the rear compartment of the winch, the magnetic mark transmitter communicates with the magnetic mark receiver through wireless means; the magnetic mark transmitter includes a probe housing with an open end 2. The opening of the probe shell 2 is sealed with one end of the shell 4, and the other end of the shell 4 is sealed with a fixed plate 12; A battery pack 5 for powering the entire device and a processing circuit board 7 connected to the induction coil 1 for processing signals collected by the induction coil 1 are provided. A power switch 11 and a charging plug 13 are installed on the fixed plate 12 . Both the probe housing 2 and the shell 4 are hollow cylindrical. The front part of the probe housing 2 e...

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Abstract

The invention discloses a wireless magnetic mark acquisition system of logging cables. The system comprises a magnetic mark transmitter which is arranged on a well head and a magnetic mark receiver which is arranged on the back bin of a winch, wherein the magnetic mark transmitter is communicated with the magnetic mark receiver in a wireless way. The stopping time of a wired magnetic mark system due to on-site clearing of troubles which are always caused by plug fault and circuit fault is shortened, and the magnetic mark on-site utilization fault rate is reduced. Simultaneously the work load of on-site wellhead construction persons is lightened, wire drawing is not necessary, and the operation stability of the system is reinforced. A self-wound high-precision marking device is adopted to increase the wear resistance and the amplitude of signal. The wireless magnetic mark acquisition system solves the defects of the existing wireless magnetic marking system such as long distance, large interference and low measurement precision.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploitation, and relates to a signal collection and transmission system, in particular to a wireless magnetic mark collection system of well logging cables. Background technique [0002] In the process of oil and gas well development and logging, the magnetic mark is one of the very important signals in oil and gas well logging. It is an important basis for converting apparent depth into actual depth in well interpretation. Usually, Martindicker or wellhead motors are used as depth logging equipment, and there will be measurement errors, which cannot meet the specified allowable depth error indicators. Magnetic marks as depth standards can well meet the logging requirements. In the past, the wellhead signal measurement used the ignition coil on the old car to collect the signal, and it was carried out by cable transmission. However, due to the long distance from the wellhead to the winch pan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/04E21B47/12G08C17/02
CPCE21B47/04E21B47/12G08C17/02
Inventor 谢刚李江博孙庚寅刘凯廖远兴郭磊井毅马强李嘉田博宁吴雷杨飞虎刘强赵坤
Owner BC P INC CHINA NAT PETROLEUM CORP
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