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Well cementation cement paste low-temperature dehydration instrument

A technology for cementing cement slurry and water loss instrument, which can be used in instruments, thermometers, scientific instruments, etc.

Pending Publication Date: 2020-10-20
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing instruments cannot meet the water loss performance test requirements of cement slurry below room temperature

Method used

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  • Well cementation cement paste low-temperature dehydration instrument
  • Well cementation cement paste low-temperature dehydration instrument

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Embodiment Construction

[0028] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. And in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] figure 1 The cement slurry low-temperature water loss instrument according to an embodiment of the present invention is schematically shown. The cement slurry low-temperature water loss instrument according to the present invention can simulate the water loss of cement slurry in a low temperature environment, so as to test the water loss performance of the cement slurry in a low temperature environment.

[0030] Such as figure 1 As shown, the cement ...

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Abstract

The invention provides a well cementation cement paste low-temperature dehydration instrument, which belongs to the field of well cementation engineering test devices in oil and gas development, and comprises a dehydration instrument main machine, main machine which is arranged on a support device; a paste cup arranged in the dehydration instrument main machine, wherein paste is contained in the paste cup and used for measuring the water loss amount of the paste; a temperature control device arranged in the dehydration instrument main machine, connected with the paste cup and controlling the temperature of the paste cup; and a pressurizing device connected with the paste cup and controlling the air pressure in the paste cup. According to the invention, the dehydration condition of the wellcementation cement paste in a low-temperature environment can be simulated, so that the dehydration performance of the well cementation cement paste in the low-temperature environment can be tested.

Description

Technical field [0001] The invention relates to a cement slurry low-temperature water loss instrument, which belongs to the field of cementing engineering test devices in oil and gas development. Background technique [0002] Cementing projects in oil and gas development usually require the injection of cement slurry. The cement slurry will leak under a certain pressure when it passes through the high-permeability stratum, which will cause the cement to lose water and deteriorate its fluidity. Therefore, the cement slurry system used in the cementing process is required to have a specific water loss. If the water loss of the cement slurry is not controlled, a large amount of liquid in the cement slurry will leak to the formation, thereby reducing the liquid content of the cement slurry , The consistency becomes larger, it is difficult or even impossible to pump, which damages the formation to varying degrees, resulting in the reduction of oil and gas productivity, and in severe ...

Claims

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Application Information

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IPC IPC(8): G01N33/38G01K7/02
CPCG01N33/383G01K7/02
Inventor 刘浩亚李燕陈向军佟颖豆宁辉唐文泉牛成成金鑫
Owner CHINA PETROLEUM & CHEM CORP
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