Novel dual-induction eight-lateral logging instrument

A logging tool, a new type of technology, applied in the direction of measurement, borehole/well components, earthwork drilling and production, etc., can solve the problems of insufficient condition verification, reduce mutual inductance, overcome coil system instability, reduce displacement and drift effect

Inactive Publication Date: 2014-04-09
杭州丰禾石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many factors affecting the induction coil system. When it comes to a problem and there are new ideas, there are often not enough conditions to verify

Method used

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  • Novel dual-induction eight-lateral logging instrument
  • Novel dual-induction eight-lateral logging instrument
  • Novel dual-induction eight-lateral logging instrument

Examples

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Embodiment 1

[0026] A new type of dual induction eight laterolog tool, such as figure 1 As shown, it includes double-induction eight-side electronic instrument 1, pre-launch short joint 2, double-induction coil system 3 and eight-side electrode 4, and double-induction coil system 3 uses an integrated mandrel 13 to form an integrated coil system , The double induction coil system 3 is provided with a coil 5, the coil 5 is wound with multi-strand enameled wire, and the connection end of the double induction coil system 3 and the eight lateral electrodes 4 is provided with a debugging compensation coil 6 whose longitudinal position can be adjusted. The double induction coil system 3 has an auxiliary compensation coil in the receiving circuit of the internal induction ILM. The integrated mandrel 13 is a fiberglass mandrel, such as figure 2 As shown, the integrated mandrel 13 includes a coil slot 7 , a cable slot 8 , a centralizing slot 10 and a mandrel maximum radius 9 , and the coil 5 is wo...

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PUM

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Abstract

The invention relates to the technical field of logging instruments, and discloses a novel dual-induction eight-lateral logging instrument. The novel dual-induction eight-lateral logging instrument comprises a dual-induction eight-lateral electronic instrument, a prelaunch releasing nipple, a dual-induction coil system and an eight-lateral electrode. An integrated mandrel is adopted in the dual-induction coil system to form an integrated coil system, the dual-induction coil system is provided with a coil which is manufactured by a multistrand enamelled wire in a wound mode, a debugging compensating coil with an adjustable longitudinal position is arranged at the connection end of the dual-induction coil system and the eight-lateral electrode, an auxiliary compensating coil is arranged in an induction ILM receiving loop in the dual-induction coil system, and uniform conductive magnetic materials are installed in the integrated mandrel. The dual-induction coil system is an integrated coil system, so displacement and drifting caused by mechanical and heating movements are reduced; coaxial-cable transmission is adopted, interference signals in the transmission process are shielded sufficiently, all the coils are manufactured by multistrand enamelled wires in a wound mode, influences of the skin effect are eliminated, the debugging compensating coil is arranged so that the coil system can be stabilized, and the uniform conductive magnetic materials play a role in electromagnetic stabilization.

Description

technical field [0001] The invention relates to the technical field of well logging instruments, in particular to a novel dual-induction eight-side lateral logging instrument. Background technique [0002] There is a popular saying in the logging field that "induction is afraid of drifting, and sound waves are afraid of jumping". Materials and electromagnetic vector circuits have a great influence, that is, their own structure and environmental conditions have a great influence, and it is easy to produce large drift due to the influence of the environment such as temperature, pressure and its own state. It is difficult to stabilize the instrument. The inherent "induction is afraid of drifting" "One said. [0003] Due to the difficulty of sensing instruments, many people who study them often give up without any achievements for many years, and very few people can really conduct in-depth research and achieve something. There are many factors affecting the induction coil syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00
Inventor 张良琪李立伟何雪坤许林邱海涛
Owner 杭州丰禾石油科技有限公司
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