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Spontaneous imbibition measurement apparatus and experiment method thereof

A technology of spontaneous imbibition and measurement devices, applied in the direction of material absorption weighing, material impedance, etc., can solve problems such as high cost, human and system errors, and inconvenient data acquisition, and achieve the effect of simple structure and convenient installation

Inactive Publication Date: 2016-01-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, this method will cause some human and systematic errors, resulting in inaccurate measurement results. In addition, this measurement device can only measure the change of the quality of the water absorbed by the entire core over time, without obtaining other data information, which has certain limitations.
Secondly, using this device to carry out spontaneous imbibition experiments requires drilling and grinding the cores to make standard cores for measurement. The sample preparation process is cumbersome, the cost is too high, and the experimental period is prolonged, which brings a lot of inconvenience to data acquisition.

Method used

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  • Spontaneous imbibition measurement apparatus and experiment method thereof

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Embodiment approach 1

[0038] Such as figure 1 As shown, the present invention provides a kind of spontaneous imbibition measuring device, and it comprises casing 1, and this casing 1 has measuring chamber 2 and sample chamber 3, and described measuring chamber 2 is positioned at the top of described sample chamber 3; Container 31 is positioned at In the sample chamber 3, the container 31 is filled with a liquid to be tested 32 and a rock sample 33 to be tested, and the rock sample 33 to be tested penetrates into the liquid to be tested 32 and passed through a rock sample holder 331 Clamping, the rock sample 33 to be tested is connected with a resistivity measuring instrument 34; the weighing mechanism 21 is located in the measuring chamber 2, and the weighing mechanism 21 connects with the rock sample holder through a suspension rope 22 331 connected; the conductivity measuring mechanism 23 is located in the measuring chamber 2, the conductivity measuring mechanism 23 is connected with a conductivi...

Embodiment approach 2

[0060] Such as figure 1 As shown, the present invention also provides a spontaneous imbibition test method of a spontaneous imbibition measuring device, the spontaneous imbibition measuring device is the spontaneous imbibition measuring device described in Embodiment 1, and the structure of the spontaneous imbibition measuring device , working principles and beneficial effects are the same as those of Embodiment 1, and will not be repeated here. This spontaneous imbibition experimental method comprises the steps:

[0061] a) providing a rock sample 33 to be tested, cleaning the rock sample 33 to be tested, and drying the rock sample 33 to be tested;

[0062] b) After weighing the dry weight of the dried rock sample 33 to be tested, fix the rock sample 33 to be tested with a rock sample holder 331, and connect the resistivity gauge 34;

[0063] c) After injecting the liquid 32 to be tested into the container 31 of the spontaneous imbibition measurement device, the rock sampl...

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Abstract

The invention provides a spontaneous imbibition measurement apparatus and an experiment method thereof. The spontaneous imbibition measurement apparatus comprises: a box body having a measurement chamber and a sample chamber, wherein the measurement chamber is positioned above the sample chamber; a container positioned in the sample chamber, wherein a liquid to be measured and a rock sample to be measured are contained in the container, and the rock sample to be measured intrudes into the liquid to be measured, is clamped by a rock sample clamper, and is connected with a resistivity measuring instrument; a weighing mechanism positioned in the measurement chamber and connected with the rock sample clamper through a suspension rope; and a conductivity measurement mechanism positioned in the measurement chamber and connected with a conductivity electrode stretching into the liquid to be measured. The spontaneous imbibition measurement apparatus and the experiment method thereof allow the spontaneous imbibitions capability of unconventional reservoir rocks in different stratums or in different positions of a same stratum to be rapidly and accurately evaluated, and provide base data for researches of recycling of fracturing fluids.

Description

technical field [0001] The present invention relates to a spontaneous imbibition measurement device and its experimental method, in particular to a spontaneous imbibition measurement device and its experimental method used in the field of exploration and development experiments. Background technique [0002] my country has abundant reserves of unconventional oil and gas resources, and its exploration and development have attracted more and more attention. In order to solve problems in engineering, experimental research has gradually deepened. Unconventional reservoirs have small pores, strong capillary force, and obvious spontaneous imbibition phenomenon. Spontaneous imbibition refers to the process in which a wetting fluid in rock pores spontaneously replaces another non-wetting fluid under the action of capillary force. It is an important mechanism affecting fracturing of low permeability reservoirs. It is very important to study the mechanism of fluid imbibition in cores...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02G01N27/02
Inventor 高之业姜振学杨柳
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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