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Monitoring device for formation fluid pressure of core sample

A core sample and monitoring device technology, which is applied in the directions of measuring fluid pressure, measuring device, measuring fluid pressure through electromagnetic elements, etc., can solve the problem of inability to monitor the transmission pressure value, etc., and achieve the effect of simple structure

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing monitoring device has the problem that when the mud shale produces cracks, during the pressure transmission process, a single measuring point that is not in the direction of the fracture will not be able to monitor the transmitted pressure value

Method used

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  • Monitoring device for formation fluid pressure of core sample
  • Monitoring device for formation fluid pressure of core sample

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with accompanying drawing.

[0021] see figure 1 and figure 2 , which are respectively a schematic cross-sectional view of the overall structure of the monitoring device for formation fluid pressure of core samples of the present invention and a structural schematic diagram of the multi-measuring point pressure monitoring component of the present invention for monitoring the formation fluid pressure of core samples. Such as figure 1 As shown, the monitoring device is used to monitor the pressure transmission of the core sample 6 in different directions. In the embodiment of the present application, the core sample 6 may be fractured shale, for example. The monitoring device includes a housing 1 , an end cover 2 , a blocking portion 3 , a sleeve assembly 4 and a pressure monitoring assembly 5 .

[0022] In the embodiment of the present application, the housing 1 is generally cylindrical in shape wi...

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Abstract

The invention relates to a monitoring device for formation fluid pressure of a core sample, comprising: a housing with a hollow area inside; an end cover fixedly installed at the upper port of the housing; located in the hollow area and close to the A plugging part is provided at the bottom of the housing; a sleeve assembly is sleeved on the outer peripheral wall of the end cover and the plugging part to be configured as a holding area for accommodating rock core samples, wherein the sleeve The outer wall of the component is provided with pressure support parts at intervals in the circumferential direction and radial direction; correspondingly installed in the pressure support part, the pressure monitoring component used to monitor the pressure transmission of the core sample in different directions. The monitoring device has the advantages of effectively monitoring the pressure transmission in different directions of the core sample, and also has the advantages of simple and reliable structure, accurate monitoring results and accurate judgment of wellbore stability.

Description

technical field [0001] The invention relates to the technical field of well wall stability evaluation in the process of petroleum exploration and development, in particular to a monitoring device for formation fluid pressure of core samples. Background technique [0002] The existing shale wellbore stability research has always been an engineering problem that has not been well resolved at home and abroad, and is also one of the important factors that restrict the exploration and development speed of my country's oil and gas fields. Therefore, the study of shale pressure transfer is helpful to understand the mechanism of shale wellbore instability. The principle of shale pressure transfer experiment simulation is realized by evaluating the permeability of shale. The permeability of shale is the main parameter to evaluate the pressure gradient characteristics of shale under the action of hydraulic pressure difference. [0003] Existing monitoring devices establish several p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01L9/00
Inventor 曾义金王怡陈军海石秉忠张金成孙连环牛新明徐江陈一健张伦平吴超韩艳浓
Owner CHINA PETROLEUM & CHEM CORP
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