Method and device for measuring porosity of irregular blocky rock sample
A measurement method, irregular technology, applied in the direction of measuring devices, suspension and porous material analysis, instruments, etc., to achieve the effect of avoiding damage, simple structure and low cost
Pending Publication Date: 2020-09-08
BC P INC CHINA NAT PETROLEUM CORP +1
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[0005] Aiming at the problems existing in the prior art, the present invention provides a method and device for measuring the porosity of irregular massive rock samples, which solves the appearance volume measurement of unconventional reservoir rock samples without the need to process the rock samples into regular shapes. The appearance volume of the rock sample can be accurately measured, and then combined with conventional methods to measure its skeleton volume, so as to obtain the porosity of such irregular block samples and avoid damage to the rock sample
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[0055] refer to Figure 4 with 5 , respectively measured the apparent volume and skeleton volume of two shale in Yibin area, Sichuan, and obtained accurate porosity data. The rock sample does not have a complete block and cannot be processed into a standard plunger sample with a regular shape. It is measured by conventional methods. A device for measuring the appearance volume of regular massive rock samples.
[0056] The porosity of the obtained irregular block samples is 3.2% and 4.1%, respectively, which solves the porosity measurement problem of irregular rock samples and provides reliable basic data for follow-up research.
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Abstract
The invention provides a method and a device for measuring the porosity of an irregular blocky rock sample. The volume of a powder medium is measured; then, the powder medium and an irregular blocky rock sample are mixed and compacted; in the compaction process, with the powder medium as support, the irregular blocky rock is prevented from being damaged in the compaction process; and through two volume subtractions, the volume of the irregular blocky rock sample is obtained, and finally the porosity is calculated according to the volume. According to the method, the appearance volume of the rock sample can be accurately measured and then the skeleton volume of the rock sample can be measured without processing the rock sample into a rock sample with a regular shape, so that the porosity ofthe irregular block sample is obtained, and damage to the rock sample is avoided.
Description
technical field [0001] The invention relates to the fields of petroleum geological exploration and oil and gas resource evaluation, in particular to a method and device for measuring the porosity of irregular massive rock samples. Background technique [0002] With the increasing exploration and development of unconventional oil and gas resources such as shale gas and coalbed methane, the petrophysical experiments of unconventional reservoirs have received extensive attention, but the basic unconventional There are not many petrophysical experiments on rock samples. [0003] As the basic data of petrophysical experiments, porosity is one of the most important parameters to understand the physical properties of rocks. In conventional reservoir rock samples, the measurement technology is already very mature. The laboratory measures porosity mainly by measuring two key parameters: The skeletal volume and apparent volume of the sample, the measurement principle of the skeletal ...
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Login to View More IPC IPC(8): G01N15/08
CPCG01N15/0893
Inventor 刘鹏李新罗燕颖朱涵斌张永浩李楠李兵贺国芬韩波陈渝吴迪
Owner BC P INC CHINA NAT PETROLEUM CORP
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