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A data relay sub-section and a method for testing a logging-while-drilling tool

A logging-while-drilling and data relay technology, applied in surveying, earth-moving drilling, wellbore/well components, etc., can solve the problems of long preparation and test cycle, high site requirements, high cost, etc., to achieve convenient and efficient testing. Economical, improved reliability, cost-effective effects

Active Publication Date: 2016-05-04
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Laboratory testing of logging-while-drilling instruments can generally only perform static measurements of response functions at several points according to conditions; while actual drilling testing requires the use of equipment such as drilling, cementing, and mud, which requires long preparation and testing periods and high site requirements. The cost is huge, so it is impossible to test every instrument with real drilling

Method used

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  • A data relay sub-section and a method for testing a logging-while-drilling tool
  • A data relay sub-section and a method for testing a logging-while-drilling tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1. A data relay short section, including:

[0042] Wireline logging tool joint, built-in electrical connector of the wireline logging tool, used for mechanical and electrical connection with the wireline logging tool;

[0043] LWD tool connector, built-in LWD conductive ring, used for mechanical and electrical connection with LWD tool;

[0044] The relay control module is connected to the bus of the wireline logging tool and the bus of the logging while drilling tool; it is used to output the wireline logging system test command output by the wireline logging tool according to the logging while drilling sending the data format of the tool to the logging-while-drilling tool; and sending the data returned by the logging-while-drilling tool to the wireline logging tool according to the data format of the wireline logging tool.

[0045] The data relay nipple in this embodiment is connected between the wireline logging tool and the logging while drilling tool. t...

Embodiment 2

[0063] Embodiment 2, a method for testing a logging-while-drilling instrument, comprising:

[0064] The logging-while-drilling tool is connected to the wireline logging tool through the data relay sub-joint in Embodiment 1;

[0065] Convert the wireline logging system test command output by the wireline logging tool into the data format of the logging while drilling tool through the data relay sub, and send it to the logging while drilling tool;

[0066] The data returned by the logging-while-drilling tool is converted into the data format of the wireline logging tool through the data relay sub, and sent to the wireline logging tool.

[0067] In an implementation manner of this embodiment, the test commands of the wireline logging system may specifically include general control commands and commands for collecting and uploading data;

[0068] The step of sending the wireline logging system test command output by the wireline logging tool to the logging while drilling tool acc...

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Abstract

The invention provides a data relaying short section and a method for testing a logging-while-drilling tool. The data relaying short section comprises an electric cable logging tool connector, a logging-while-drilling tool connector and a relaying control module. An electric connector of an electric cable logging tool is arranged in the electric cable logging tool connector which is used for being mechanically and electrically connected with the electric cable logging tool. A while-drilling conducting ring is arranged in the logging-while-drilling tool connector which is used for being electrically and mechanically connected with the logging-while-drilling tool. The relaying control module is connected with a bus of the electric cable logging tool and a bus of the logging-while-drilling tool and is used for sending an electric cable logging system testing order output by the electric cable logging instrument to the logging-while-drilling tool according to the data format of the logging-while-drilling tool and sending data returned by the logging-while-drilling tool to the electric logging tool according to the data format of the electric cable logging tool. The logging-while-drilling tool can be tested conveniently and economically.

Description

technical field [0001] The invention relates to the technical field of well logging, in particular to a data relay nipple and a method for testing a logging-while-drilling instrument. Background technique [0002] Highly deviated wells and horizontal wells play an important role in improving oil recovery and reducing operating costs, and logging while drilling tools play an important role in highly deviated wells and horizontal wells. [0003] Logging while drilling has high requirements on the stability and reliability of the instrument, and each instrument needs to undergo strict and comprehensive testing. Laboratory testing of logging-while-drilling instruments can generally only perform static measurements of response functions at several points according to conditions; while actual drilling testing requires the use of equipment such as drilling, cementing, and mud, which requires long preparation and testing periods and high site requirements. The cost is huge, so it i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00
Inventor 李国玉马明学秦才会丰扬
Owner CHINA NAT OFFSHORE OIL CORP
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