Water injection well array gamma logging device and in-layer subdivision logging method

A technology of gamma logging and water injection wells, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc., can solve the problems of inability to detect and describe subdivided layers of water injection wells, achieve high logging efficiency and improve detection efficiency Effect

Pending Publication Date: 2021-02-12
SHAANXI HUACHEN GASOLINEEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a water injection well array gamma logging device and a method for subdivided logging in layers, which solves the problem that the existing technology cannot detect and describe the subdivided layers of water injection wells, and at the same time cannot realize multi-direction in the circumferential direction of the well. Simultaneous detection and description of technical issues

Method used

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  • Water injection well array gamma logging device and in-layer subdivision logging method
  • Water injection well array gamma logging device and in-layer subdivision logging method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1, such as figure 1 , figure 2, a water injection well array gamma logging device, wherein the water injection well array gamma logging device includes: a subdivision layer gamma array subsection 5, and the subdivision layer gamma array subsection 5 is set At least two vertically arranged first gamma probes 6; the subdivision layer gamma array subsection 5 is used to collect the subdivision isotope tracer accumulation in the layer, that is, to subdivide the detection layer, Divide into several thin layers with smaller thickness, and then detect their accumulation of isotope tracer respectively; an azimuth gamma array subsection 7, the azimuth gamma array subsection 7 includes the outer casing and the The gyroscope 7.7 and the second gamma probe 7.3 inside the shell, the gyroscope 7.7 and the second gamma probe 7.3 are two groups, arranged in a fan shape in the horizontal direction, and used to detect isotope tracers in two directions agent accumulation amount...

Embodiment 2

[0030] Embodiment 2, a water injection well array gamma logging device, wherein the water injection well array gamma logging device includes: two subdivided layer gamma array subsections 5, the subdivided layer gamma array subsections 5 Set 2 groups of symmetrically distributed 2 vertically arranged first gamma probes 6 on section 5; that is, each group is composed of 2 vertically arranged first gamma probes 6, and then surrounds the subdivision layer gamma array The shells of the sub-section 5 are arranged in two groups, so that subdivision layer detection is carried out in two directions, that is, the detection layer is divided into two subdivision layers, so as to complete the detection between layers, and the circumferential Detection in four directions. The subdivision layer gamma array subsection 5 is used to collect the accumulation of subdivision isotope tracers in the layer, that is, to subdivide the detection layer into several thin layers with smaller thickness, and...

Embodiment 3

[0031] Embodiment 3, a water injection well array gamma logging device, wherein the water injection well array gamma logging device includes: two subdivided layer gamma array subsections 5, and the subdivided layer gamma array subsections 5 4 groups of symmetrically distributed 4 vertically arranged first gamma probes 6 are set on the section 5; that is, each group is composed of 4 vertically arranged first gamma probes 6, and then surrounds the subdivision layer gamma array The shells of the short joints 5 are distributed in four groups, so that the subdivision layer detection is carried out in four directions, that is, the detection layer is divided into 4 subdivision layers, so as to complete the detection between layers, and the circumferential four directions detection in one direction. The subdivision layer gamma array subsection 5 is used to collect the accumulation of subdivision isotope tracers in the layer, that is, to subdivide the detection layer into several thin ...

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Abstract

The invention belongs to the technical field of underground logging instruments, and particularly relates to a water injection well array gamma logging device and an in-layer subdivision logging method. The water injection well array gamma logging device comprises at least one subdivision layer gamma array short section, at least one azimuth gamma array short section, a cable head and a magnetic positioner, wherein at least two first gamma probes are vertically arranged on each subdivision layer gamma array short section; and each azimuth gamma array short section comprises a shell, at least two groups of gyroscopes and at least two groups of second gamma probes, and the gyroscopes and the second gamma probes are arranged in the shells. The technical problems that in the prior art, detection description cannot be carried out on a subdivision layer of a water injection well, and meanwhile detection description cannot be carried out in the circumferential direction and the multidirectional direction in the well at the same time are solved, and the inter-well connectivity detection efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of downhole logging instruments, in particular to a water injection well array gamma logging device and an intralayer subdivision logging method. Background technique [0002] In the process of detecting water injection wells, the existing instruments can only analyze the connection between wells, the direction of water injection and the distribution of oil through the distribution of isotope tracers in other wells. The distribution of isotopic tracers indicates that the water flowed from the injection well, and the two are connected. The efficiency is extremely low, the detection cost is high, and at the same time, it can only detect the overall situation of a production layer. However, due to the thick layer of the water injection well, we can only get the water injection well in this layer after water injection and then isotope tracer detection. The water in the reservoir can flow from one side to the ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/11E21B47/04E21B49/00E21B43/20
CPCE21B43/20E21B47/04E21B49/00
Inventor 陈波柴德民李建明邓军史源源韩忠林李宏飞柳宝强张国峰宋思禹赵凯田凯王集鸿梅山楼
Owner SHAANXI HUACHEN GASOLINEEUM TECH
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