Unlock instant, AI-driven research and patent intelligence for your innovation.

Cable logging instrument and refrigerating method thereof

A technology of wireline logging and refrigeration method, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc., and can solve the problems of low heat conduction efficiency and complex structure, etc.

Active Publication Date: 2020-06-19
CHINA NAT OFFSHORE OIL CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the cooling (insulation) method of wireline logging tools of various logging companies can only be realized by using heat insulating bottle + heat insulating agent + heat absorbing agent. This cooling method is a passive heat absorption method, although the technical conditions are very mature. , but under some specific conditions, the heat conduction efficiency is generally low, and the structure is relatively complicated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cable logging instrument and refrigerating method thereof
  • Cable logging instrument and refrigerating method thereof
  • Cable logging instrument and refrigerating method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The application describes a number of embodiments, but the description is illustrative rather than restrictive, and it will be obvious to those of ordinary skill in the art that within the scope of the embodiments described in the application, There are many more embodiments and implementations. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Except where expressly limited, any feature or element of any embodiment may be used in combination with, or substituted for, any other feature or element of any other embodiment.

[0027] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The disclosed embodiments, features and elements of this application can also be combined with any conventional features or elements to form unique inventive solutions as defined by the clai...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a cable logging instrument and a refrigerating method thereof. At least one liquid nitrogen storer and at least one temperature sensor are arranged in the cable logging instrument. The method comprises the steps that the temperature sensor collects the temperature of the cable logging instrument in real time; when the temperature of the cable logging instrument is higher than or equal to a first preset temperature threshold value, a release valve of the liquid nitrogen storer is controlled to be opened to release liquid nitrogen, and the refrigerating function for the cable logging instrument is achieved through the gasification process of the released liquid nitrogen. By means of the scheme, active refrigerating in the logging instrument is achieved, the refrigerating efficiency is high, the structure is simple, safety and reliability are achieved, operability is high, applicability is high, and environmental pollution is avoided.

Description

technical field [0001] This article relates to the refrigeration technology of well logging equipment, especially a kind of wireline logging equipment and its refrigeration method. Background technique [0002] At present, the cooling (insulation) method of wireline logging tools of various logging companies can only be realized by using heat insulating bottle + heat insulating agent + heat absorbing agent. This cooling method is a passive heat absorption method, although the technical conditions are very mature. , but under certain conditions, the heat conduction efficiency is generally low, and the structure is relatively complicated. Contents of the invention [0003] The application provides a wireline logging instrument and a refrigeration method thereof, which can realize active refrigeration inside the logging instrument, and have high refrigeration efficiency, simple structure, safety and reliability, strong operability, strong applicability, and no pollution to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/07E21B47/017E21B36/00
CPCE21B47/00E21B36/001
Inventor 黄琳王野梁郭书生陈鸣高永德张伟薛牟奇程怀标
Owner CHINA NAT OFFSHORE OIL CORP