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Simulation test device and simulation test method for cement sheath micro annulus space

A simulation test, cement ring technology, applied in construction and other directions, can solve the problem of not being able to cement the cement and the cylinder wall, and not being able to judge whether the micro-annulus is generated in real time.

Inactive Publication Date: 2017-07-04
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

However, these research devices cannot judge whether the micro-annulus is generated in real time, let alone obtain the cement and cylinder wall bonding situation in a visualized form.

Method used

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  • Simulation test device and simulation test method for cement sheath micro annulus space
  • Simulation test device and simulation test method for cement sheath micro annulus space

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The implementations are only some of the implementations of the present application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0023] see figure 1 , the embodiment of the present application provides a simulation test device for cement annulus micro-annulus. The device includes an inner cylinder 9 and an outer cylinder 10, an annular space is formed between the inner cylinder 9 and the outer cylinder 10, and both the inner cylinder 9 an...

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Abstract

The application provides a simulation test device and a simulation test method for cement sheath micro annulus space. The device comprises an inner cylinder and an outer cylinder, wherein an annular space is formed between the inner cylinder and the outer cylinder; the inner cylinder and the outer cylinder are both installed on a pedestal; a port of the inner cylinder is enclosed by an inner cylinder upper cover; a port of the outer cylinder is enclosed by an outer cylinder upper cover; the inner cylinder upper cover is provided with a through hole; a high pressure oil pipe is embedded in the through hole; the outer cylinder upper cover is provided with a small hole; the pedestal is provided with a small hole; gas can be injected in the annular space through the small hole in the pedestal; the injected gas can be discharged through the small hole in the outer cylinder upper cover; two ultrasonic imagers are installed at two sides of the outer cylinder so as to scan the outer cylinder and the inner cylinder. The simulation test device and simulation test method for cement sheath micro annulus space of the application can determine in real time whether or not micro annular space generates and obtain the cementation condition of cement and cylinder walls in a visualized mode.

Description

technical field [0001] The present application relates to the technical field of oil and gas well development, in particular to a simulation test device and a simulation test method for cement annulus micro-annulus. Background technique [0002] Cement stone is a brittle material with congenital defects. The downhole cement sheath will break and form macroscopic cracks under the impact of high-energy flow of perforating bullets. Subsequent stimulation measures during the development of oil and gas wells will further expand these cracks, resulting in The sealing effect of the cement sheath completely failed. In addition, the shrinkage of cement stone creates micro-gap at the interface, which can lead to gas-water channeling in the later stage. There are two main means of studying the micro-annulus of downhole cement annulus abroad: experimental research and numerical calculation. In terms of experimental research, the main method is to inject cement into the two-layer conce...

Claims

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Application Information

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IPC IPC(8): E21B47/005E21B47/002
CPCE21B47/002E21B47/005
Inventor 靳建洲刘子帅徐明于永金李勇齐奉忠袁进平张华张弛张玮
Owner BC P INC CHINA NAT PETROLEUM CORP
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