Device and method for detecting and evaluating sealing performance of cement ring of oil and gas well

A technology for sealing performance and evaluation devices, which is applied in the directions of sealing/isolation, earthwork drilling, wellbore/well parts, etc. Guarantee the integrity of the wellbore and other issues to achieve the effect of optimal selection and process design, good segmental cementing technology, and realization of segmental cementing technology

Active Publication Date: 2020-06-16
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Whether the sealing properties of the first cemented surface and the second cemented surface are good or not will directly affect the cementing quality, and the service status of the casing will have a great impact, and the integrity of the wellbore cannot be guaranteed
[0003] Existing detection devices are mainly tested for the sealing and cutting characteristics of the cement sheath in deep water well cementing. They only start from the sealing and cutting characteristics, without considering the cementing process and sealing effect, etc.

Method used

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  • Device and method for detecting and evaluating sealing performance of cement ring of oil and gas well
  • Device and method for detecting and evaluating sealing performance of cement ring of oil and gas well

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Embodiment Construction

[0036] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", "end", "side" etc. is based on the Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or i...

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Abstract

The invention discloses a device and method for detecting and evaluating the sealing performance of a cement ring of an oil and gas well. The device comprises a first diameter sleeve, wherein the first diameter sleeve is sleeved with a second diameter sleeve and positioned at the center of the second diameter sleeve; cementing cement is arranged between the first diameter sleeve and the second diameter sleeve; a plug is arranged at one end of the second diameter sleeve, and a push plate is arranged at the other end of the second diameter sleeve; the second diameter sleeve is connected with a first hydraulic system; the first diameter sleeve is connected with a second hydraulic system through the push plate; and the position, on one side of the push plate, between the first diameter sleeveand the second diameter sleeve is connected with a temperature control system. The device and the method are simple to operate, can well realize the segmented well cementation process technology, optimize the selection and process design of well cementation slurry, and provide a technical support for ensuring the integrity of an oil and gas well shaft.

Description

technical field [0001] The invention belongs to the technical field of physical test and detection of oil pipes, and in particular relates to an oil and gas well cement sheath sealing performance detection and evaluation device and evaluation method. Background technique [0002] At present, the exploration and development of oil and gas resources are developing in the direction of "deep, low, sea, and non". The problem of wellbore annular pressure in unconventional fields cannot be completely solved. The annular pressure areas include A annular space, B annular space and C annulus, etc. Whether the sealing properties of the first cemented surface and the second cemented surface are good or not will directly affect the cementing quality, and at the same time, the service status of the casing will have a great impact, and the integrity of the wellbore cannot be guaranteed. [0003] Existing detection devices are mainly tested for the sealing and cutting characteristics of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/005E21B33/13
CPCE21B33/13
Inventor 杨尚谕韩礼红王建军路彩虹潘志勇王航
Owner BC P INC CHINA NAT PETROLEUM CORP
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