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Bubble point pressure testing device and method

A bubble point pressure and testing device technology, which is applied in measurement, earthwork drilling, wellbore/well components, etc., can solve the problems of poor repeatability of bubble point pressure, complex channels, and low accuracy, and achieve the effect of overcoming poor repeatability

Active Publication Date: 2016-07-27
PETROCHINA CO LTD
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Problems solved by technology

However, due to the complex pores inside the core, the displacement test speed is slow, and the bubble point pressure test has poor repeatability and low accuracy, so it is not suitable for numerical simulation

Method used

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  • Bubble point pressure testing device and method

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Embodiment Construction

[0035] 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.

[0036] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0037] refer to figure 1 , the bubble point pressure testing device of the embodiment of the present application includes: a first injection pump 1, a second i...

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Abstract

The invention relates to the field of oil-gas field development tests, in particular to a bubble point pressure testing device and method. According to the bubble point pressure testing method, fluid bubble point pressure can be rapidly and accurately obtained by testing the changing relation of fluid pressure and volume in capillary tubes. The defects that bubble point pressure is poor in repeatability and low in accuracy when core testing is adopted are overcome, bubble point pressure under the condition of different parameters can be obtained according to the parallel-connection way of the capillary tubes by changing the parameters such as the inner diameter and length of the capillary tubes, and a numerical simulation model can be built.

Description

technical field [0001] The invention relates to the field of oil and gas field development experiments, in particular to a bubble point pressure testing device and method. Background technique [0002] The test of formation oil's physical property parameters under high pressure, such as bubble point pressure, dissolved oil-gas ratio, volume coefficient, compressibility coefficient and viscosity, etc., are indispensable parameters for a series of oil and gas reserves calculation and reservoir numerical simulation. Bubble point pressure is particularly important in oilfield development. At present, the conventional practice is to use a high-pressure pump to fill the water medium, and then drive another medium, usually formation fluid, into the core (porous medium), and measure the bubble point pressure according to the pressure-volume relationship. However, due to the complex pores inside the core, the speed of displacement test is slow, and the repeatability and accuracy of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/06E21B49/08
Inventor 张可李实杨胜建刘晓蕾陈兴隆
Owner PETROCHINA CO LTD
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