Experimental device and method for simulating casing damage process

A technology of experimental method and experimental device, which is applied in the direction of earth drilling, mining fluid, measurement, etc.

Active Publication Date: 2020-12-18
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no indoor experimental device and experimental method for the research on casing damage, so it is neces...

Method used

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  • Experimental device and method for simulating casing damage process
  • Experimental device and method for simulating casing damage process

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Embodiment Construction

[0038] The details of the present invention can be understood more clearly with reference to the accompanying drawings and the description of specific embodiments of the present invention. However, the specific embodiments of the present invention described here are only for the purpose of explaining the present invention, and should not be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modification based on the present invention, and these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or there may also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted", "connec...

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Abstract

The invention discloses an experimental device and method for simulating a casing damage process, and relates to the field of petroleum engineering rock mechanics. The experimental method comprises the steps: a rock test piece for simulating a stratum is manufactured, the rock test piece sequentially comprises a shale layer, a conglomerate layer and a mudstone layer; a fault is prefabricated in the manufacturing process of the rock test piece; a shaft is drilled in the rock test piece, the shaft penetrates through the fault, and a casing is mounted in the shaft; in the process of applying thetriaxial pressure, data of a displacement deformation sensor and data of the triaxial pressure applied to the rock test piece are recorded; and the rock test piece is taken out, the casing is taken out to observe and record the damage conditions of the casing and a cement sheath, and the influence of the rock stratum stress difference on casing damage is analyzed according to the damage conditionsof the casing and the cement sheath, the data of the displacement deformation sensor and the data of the triaxial pressure applied to the rock test piece. The casing damage process can be simulated,factors causing casing damage are analyzed, and finally prevention and treatment of the casing damage problem of the oil-gas well of the oil field are achieved.

Description

technical field [0001] The invention relates to the field of petroleum engineering rock mechanics, in particular to an experimental device and an experimental method for simulating casing damage process. Background technique [0002] With the major changes in the international energy pattern, my country's rapid economic development is increasingly dependent on foreign energy demand, and the stability of international energy supply is uncertain due to the impact of regional security conditions. There are various types of oil and gas resources in my country. The exploration and development of most oil fields in the country are already relatively high. The potential of conventional oil and gas reservoirs is getting smaller and smaller, and the difficulty of exploitation is getting more and more difficult. However, special oil and gas reservoirs such as conglomerate occupy a large proportion of the total oil and gas resources in my country. The proportion is relatively large, and...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B47/00
CPCE21B43/26E21B47/00
Inventor 张广清訾怀有
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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