Determination device and method for volume stability of well cementing cement

A volumetric stability and cementing cement technology, which can be used in measuring devices, using stable tension/pressure to test material strength, earthwork drilling, etc. It can solve problems such as poor accuracy and incomplete volumetric stability of cementing cement. , to achieve the effect of a comprehensive evaluation

Active Publication Date: 2018-09-14
PETROCHINA CO LTD
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Problems solved by technology

[0005] The embodiment of the present application provides a device and method for determining the volume stability of cement to solve the technical problems of incomplete and poor accuracy in determining the volume stabili

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  • Determination device and method for volume stability of well cementing cement
  • Determination device and method for volume stability of well cementing cement
  • Determination device and method for volume stability of well cementing cement

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Embodiment Construction

[0039] 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 embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0040]Considering that when the existing methods determine the volume stability of cement, the volume change characteristics of cement in the real construction scene are not comprehensively analyzed, and only the volume change of cement in the axial direction is considered. Therefore, only the axial volume change parameters are tested and...

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Abstract

The embodiment of the invention provides a determination device and method for the volume stability of well cementing cement. The determination device comprises a reaction kettle, a radial shrinkage expansion ring, a heater, a pressurizer and a volume change parameter tester; the radial shrinkage expansion ring comprises a first casing pipe and a second casing pipe, an elastic material casing pipeserves as the first casing pipe, a steel casing pipe serves as the second casing pipe, and an annulus between the first casing pipe and the second casing pipe is used for containing well cementing cement samples; the heater and the pressurizer are used for providing the preset temperature and the preset pressure correspondingly; and the volume change parameter tester is used for detecting the radial volume change parameter of the well cementing cement. According to the determination device and method, the radial shrinkage expansion ring is arranged to obtain the radial volume change parameterof the well cementing cement, then the radial volume change parameter of the well cementing cement is utilized to comprehensively evaluate the volume stability of the well cementing cement, and thusthe technical problem that in an existing method, determination of the volume stability of the well cementing cement is incomplete and poor in accuracy is solved.

Description

technical field [0001] The present application relates to the technical field of oil and gas development, in particular to a device and method for determining the volume stability of well cement. Background technique [0002] When deploying oil and gas wells, cement is usually injected into the annulus between the formation and the casing to form a cement sheath for well cementing. However, the expansion and contraction of the volume of the cement sheath formed by the cement during the curing process and after the curing process will affect the cementing quality. Therefore, it is very important to determine the volume stability of the cement in advance, and based on this, it is very important to choose the cement sheath with relatively high volume stability. [0003] At present, most of the existing methods simply use the reactor to test the axial stability of the cement sample, and only use the axial stability as an index parameter to evaluate the volume stability of the c...

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Application Information

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IPC IPC(8): E21B33/13E21B47/005
CPCE21B33/13E21B47/005G01N3/08G01N3/12G01N33/383E21B33/14G01N3/18
Inventor 王福云郑友志李杰马辉运焦利宾杨涛余江谭其艳
Owner PETROCHINA CO LTD
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