System, device and method for realizing operation protection of logging winch

A monitoring system and winch technology, which is applied in hoisting devices, surveying, earthwork drilling and mining, etc., can solve problems such as failure to alarm to realize automatic low-speed operation of the winch, failure to realize safety protection of winch automatic protection instruments, etc.

Active Publication Date: 2012-03-28
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, there is no correlation between the power system and the depth monitoring system in the existing logging winch. And when a light alarm is issued, the power system cannot realize the automatic

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  • System, device and method for realizing operation protection of logging winch
  • System, device and method for realizing operation protection of logging winch
  • System, device and method for realizing operation protection of logging winch

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Embodiment Construction

[0064] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. The following examples are only used to illustrate and explain the present invention, but not to limit the technical solution of the present invention.

[0065] The embodiment of the system for realizing the running protection of the well logging drawworks provided by the present invention has a structure such as Figure 4 As shown, an embodiment including a depth monitoring system and a winch operation control device of the present invention, wherein:

[0066] The depth monitoring system is used to compare the detected real-time well depth with the preset well depth, and if the comparison result is less than the threshold value, an alarm signal is output to the winch operation control device;

[0067] The drawworks operation control device is used to control the low-speed operation of the logging winch with a prese...

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Abstract

The invention discloses a system, a device and a method for realizing the operation protection of a logging winch. The system comprises a depth monitoring system and a winch operation control device, wherein the depth monitoring system is used for comparing a detected instant well depth with a preset well depth and outputting an alarm signal to the winch operation control device if a comparison result is less than a threshold value; and the winch operation control device is used for controlling the logging winch to operate at a low speed by a preset low-speed control signal according to the input alarm signal. In the invention, correlation is established between a power system of the existing logging winch and the depth monitoring system, so that the automatic speed reduction protection of the operation of the winch and the safety protection of an instrument carried on the logging winch are realized. Moreover, part properties of a two-way variable displacement pump can be controlled according to the design requirement and an electro-hydraulic proportion, and a lifting or descending operation speed after the speed of the winch is automatically reduced is set in a certain range.

Description

technical field [0001] The invention relates to the drawworks operation control technology of the well logging system, in particular to a system, device and method for realizing the operation protection of the well logging drawworks. Background technique [0002] Well logging drawworks is a comprehensive equipment for midway testing and well testing in oil fields. The drum is driven by the power system to realize the lifting or lowering of the cable and the instruments and equipment it carries. At present, the known well logging drawworks include a power system and a depth monitoring system. [0003] The power system consists of a hydraulic system and its control circuit. [0004] Such as figure 1 As shown, the hydraulic principle of the hydraulic system in the prior art power system is represented. The volume speed regulation closed loop in this power system is controlled by electro-hydraulic proportional control bidirectional variable pump, bidirectional motor (such as ...

Claims

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Application Information

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IPC IPC(8): B66D1/54B66D1/48E21B47/04
Inventor 马梓晋江俊
Owner CHINA NAT OFFSHORE OIL CORP
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