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Well cementation cement sheath sealing detection device and method for simulating casing sliding sleeve fracturing

A technology of cementing cement and detection device, which is applied in the field of petroleum exploration experiment

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This limits the research on cement sheath integrity under large-scale hydraulic fracturing conditions to a certain extent.

Method used

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  • Well cementation cement sheath sealing detection device and method for simulating casing sliding sleeve fracturing
  • Well cementation cement sheath sealing detection device and method for simulating casing sliding sleeve fracturing

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] figure 1 An embodiment of the cementing cement sheath seal detection device 100 for simulating casing sliding sleeve fracturing according to the present invention is schematically shown. The device 100 includes an outer cylinder 110 arranged along the longitudinal direction and an inner cylinder 120 sheathed in the outer cylinder 110 . The inner cylinder 120 is centered relative to the outer cylinder 110 to form an annular space therebetween. The annular space is filled with a cement sheath 130 . An inner tube inner passage extending in the longitudinal direction is formed in the inner tube 120 . The outer cylinder 110 and the inner cylinder 120 are preferably made of steel (preferably P110 steel), for example, can be machined from API pup joints.

[0025] Inner barrel 120 includes at least one frac sleeve assembly 20 . figure 2 A specific structure of a frac s...

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Abstract

The invention relates to a well cementation cement sheath sealing detection device for simulating casing sliding sleeve fracturing. The well cementation cement sheath sealing detection device comprises an outer cylinder; the inner cylinder is arranged in the outer cylinder in a sleeved mode, an annular space is formed between the outer cylinder and the inner cylinder, the inner cylinder comprises a fracturing sliding sleeve assembly, and the fracturing sliding sleeve assembly comprises fracturing holes penetrating through the inner cylinder in the radial direction; the annular space is filled with the cement sheath, and the fracturing sliding sleeve assembly is constructed to be capable of jetting fracturing fluid to the cement sheath through the fracturing holes; and the detection mechanism is constructed to be used for detecting the sealing performance of the cement sheath when and / or after the fracturing sliding sleeve assembly is opened and the fracturing fluid is jetted to the cement sheath.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration experiments, in particular to a cement sheath seal detection device for simulating casing sliding sleeve fracturing. The invention also relates to a method of detection using the device. Background technique [0002] In the petroleum industry, the main purpose of cementing operations is to form a complete cement sheath sealing system in the annular space between the casing and the open-hole rock formation, so as to isolate the oil, gas, and water layers in the wellbore, and to support the casing. management and maintain wellbore stability. Therefore, the sealing ability of the cement sheath has a crucial impact on the well construction life of oil and gas wells. [0003] At present, there are devices for testing and evaluating the sealing ability of the cement sheath. The device includes an outer cylinder for simulating formation, an inner cylinder for simulating casing, and a cem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/005E21B47/10E21B33/13E21B43/26E21B43/14E21B34/14
CPCE21B47/10E21B33/13E21B43/26E21B43/14E21B34/14
Inventor 陆沛青张红卫邹书强刘学鹏王洁文翟青岳张亚洲赫英状
Owner CHINA PETROLEUM & CHEM CORP