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Device and method for measuring adhesion strength of gel type plugging material and rock wall surface

A technology of plugging material and adhesion strength, applied in the field of exploration

Active Publication Date: 2021-12-10
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the device and method for measuring the adhesion strength between the gel-type leak plugging material and the rock wall surface provided by the present invention solve the problem of indoor accurate measurement of the adhesion strength between the gel-type leak plugging material and the rock wall surface The problem

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  • Device and method for measuring adhesion strength of gel type plugging material and rock wall surface
  • Device and method for measuring adhesion strength of gel type plugging material and rock wall surface
  • Device and method for measuring adhesion strength of gel type plugging material and rock wall surface

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Embodiment Construction

[0043] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0044] Such as figure 1As shown, the device for measuring the adhesion strength of gel-type leakage plugging materials to the rock wall includes a rotating part and a measuring housing 1 connected with the rotating part; a hollow core 2 is arranged in the measuring housing 1, and a There is a T-shaped blocking rod 4, one end of the T-shaped blocking rod 4 passes through one side of the measuring housing 1 and is provided wi...

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Abstract

The invention discloses a device and a method for measuring the adhesion strength of a gel type plugging material and a rock wall surface. The device comprises a rotating component and a measuring shell connected with the rotating component, a hollow rock core is arranged in the measuring shell, a T-shaped stop lever is arranged in the hollow rock core, and one end of the T-shaped stop lever penetrates out of one side of the measuring shell and is provided with a displacement measuring part for measuring the displacement of the T-shaped stop lever; and a sealing plate is arranged on the other side of the measuring shell. According to the invention, the hollow rock core is used as a container and is in direct contact with the to-be-tested gel type plugging material, the internal direct pressurization is carried out by injecting the oil liquid, so that the to-be-tested gel type plugging material obtains the pushing force, and when the to-be-tested gel type plugging material moves relative to the hollow core, the adhesion strength of the to-be-tested gel type plugging material and the rock wall surface can be calculated; the device and method are of great significance to clarify the plugging mechanism of gel plugging materials and solve the problem of well leakage.

Description

technical field [0001] The invention relates to the field of exploration, in particular to a device and method for measuring the adhesion strength of a gel-type leakage plugging material and a rock wall. Background technique [0002] As oilfield development continues, complex drilling accidents occur from time to time. Lost circulation is the most common downhole complex problem in the drilling process. It not only consumes drilling time and loses mud, but also may cause pipe sticking, blowout, well collapse, etc. A series of complicated situations even lead to the failure of the wellbore, resulting in significant economic losses. (Flexible) gel plugging material is a structural colloid that can completely cut off the relationship between the formation fluid and the wellbore and has a large movement resistance. It has relatively good fluidity and strong self-adaptability, and has become a practical engineering It is an effective material for formation plugging. The conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 李阳佘继平张世玉滕格格倪建军韩凯张浩
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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