A device for testing porosity in high temperature environment and its testing method
A testing device and high-temperature environment technology, applied in the field of oil and gas exploration, can solve problems such as unusability and inability to apply confining pressure, and achieve the effects of improving measurement accuracy, small dead volume, and convenient implementation.
Active Publication Date: 2017-09-12
CHINA NAT OFFSHORE OIL CORP +1
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[0003] In the prior art, CN202583040U discloses a rock ore porosity measuring instrument, the principle of which is to convert the volume ratio of the measured object into a mass ratio based on the Archimedes principle, thereby obtaining the porosity of the rock ore; the device Cannot be used at temperatures other than the boiling point of the liquid, and the specimen cannot be subjected to confining pressure
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[0022] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0023] The present invention provides a porosity testing device and testing method for high temperature environment, the device can test the porosity of rock samples under high temperature conditions, the micro-pulse electromagnetic valve does not generate heat, the dead volume is small, and the measurement accuracy of the pore volume is improved , the test method is simple and easy to implement.
[0024] Such as figure 1 As shown, a device for porosity testing in high temperature environment according to the present invention includes a rock sample holder 1, and the rock sample holder 1 is composed of a holder kettle body 2 and is arranged on the holder The heating part 3 in the kettle body 2 is composed of one end of the rock sample holder 1 a...
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The invention provides a porosity test device and a test method thereof in a high-temperature environment, including a rock sample holder, the rock sample holder is composed of a holder body and a device arranged in the holder body One end of the rock sample holder is a plug, and the other end is provided with a holder plunger. The inside of the rock sample holder is also equipped with a micro-pulse solenoid valve 1 and a micro-pulse solenoid valve. 2. There is a gas chamber between the micro-pulse solenoid valve 1 and micro-pulse solenoid valve 2. There is also a gas chamber outside the rock sample holder to pressurize it and maintain a constant pressure confining pressure loading pump, a pressure acquisition control system and a high-pressure gas chamber. source, the inner side of the plug is the rock sample chamber, the high-pressure gas source is connected to the rock sample chamber through the pipeline, and the pipeline is also provided with a vent valve, which can test the porosity of the rock sample under high temperature conditions, and the micro pulse solenoid valve No heat generation, small dead volume, improved pore volume measurement accuracy, simple and easy to implement test method.
Description
technical field [0001] The invention relates to the technical field of oil and gas exploration, in particular to a porosity testing device and a testing method thereof in a high-temperature environment. Background technique [0002] At present, the methods for measuring rock porosity are mainly the vacuum saturated liquid method and the gas method using the ideal gas state equation; the main devices used in the vacuum saturated liquid method are vacuum pumps and weighing electronic balances, which are limited to the experimental operation mode. The boiling point and molecular diameter of the liquid can only be used to test the porosity in a relatively low temperature and no confining pressure environment; the main equipment used in the gas method using the ideal gas state equation is a rock sample holder, a confining pressure pump, a standard Gas chamber, pressure acquisition sensor, high-pressure gas source, etc.; the use of the ideal gas state equation PV=nRT is based on t...
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IPC IPC(8): G01N15/08
Inventor 何胜林周家雄张海荣陈一健
Owner CHINA NAT OFFSHORE OIL CORP