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Nanoscale unconventional reservoir rock adsorption gas extracting device and extraction and hydrocarbon analysis method

A nano-adsorption and extraction device technology, applied in the direction of sampling devices, measuring devices, analysis materials, etc., can solve the problems that cannot be solved in the analysis and evaluation of nano-scale adsorbed gas

Active Publication Date: 2014-12-10
PETROCHINA CO LTD +1
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Problems solved by technology

None of the above methods can solve the problem of analysis and evaluation of nanoscale adsorbed gas in unconventional reservoir rocks

Method used

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  • Nanoscale unconventional reservoir rock adsorption gas extracting device and extraction and hydrocarbon analysis method
  • Nanoscale unconventional reservoir rock adsorption gas extracting device and extraction and hydrocarbon analysis method
  • Nanoscale unconventional reservoir rock adsorption gas extracting device and extraction and hydrocarbon analysis method

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Embodiment 1

[0034] The steps of the nano-adsorption gas extraction and hydrocarbon analysis method for unconventional reservoir rocks are as follows:

[0035] (1) Preparation of nanoscale rock samples

[0036] The unconventional reservoir rock samples are airtightly pulverized to nanometer particle size to obtain nanometer rock samples.

[0037] (2) Extraction of rock nano-adsorbed gas

[0038] 10g to 50g of nano-scale rock samples are weighed, and the rock nano-adsorption gas gas is obtained by using the above-mentioned unconventional reservoir rock nano-adsorption gas extraction device and operation method.

[0039] (3) Gas chromatographic detection of hydrocarbon content of rock nano-adsorbed gas

[0040] Gas chromatographic conditions: Agilent 7890A gas chromatograph and chemical workstation; packed column: 3m×2mm stainless steel column, the ratio of OV-101 stationary liquid to Chromosabol support is 1:4; vaporization chamber temperature 150°C; detector: FID, temperature 180°C; col...

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Abstract

The invention relates to a nanoscale unconventional reservoir rock adsorption gas extracting device and an extraction and hydrocarbon analysis method. The extraction and hydrocarbon analysis method is characterized by comprising the following steps: (1) closely smashing an unconventional rock core until the particle size is in a nanoscale to obtain nanoscale samples; (2) obtaining a nanoscale rock adsorption gas sample by adopting a nanoscale rock adsorption gas extracting device and an operating method; (3) acquiring hydrocarbon analysis data of nanoscale rock adsorption gas by adopting a packed column gas chromatography detection method; (4) acquiring a nanoscale rock adsorption gas hydrocarbon component carbon isotope analysis result by using a hydrocarbon component carbon isotope detection method; (5) carrying out quantitative calculation by adopting an external standard method for acquiring analysis results of hydrocarbon components and the total hydrocarbon quantity; and (6) calculating to obtain analysis evaluation parameters of the rock nanoscale adsorption gas. The nanoscale unconventional reservoir rock adsorption gas extracting device and the extraction and hydrocarbon analysis method can reflect the gas condition of an unconventional reservoir and provide experimental technique supports for the gas-containing evaluation and the exploration and development of the unconventional reservoir.

Description

Technical field: [0001] The invention relates to a method for analyzing hydrocarbons in unconventional reservoir rocks in the technical field of oil and gas exploration in oil fields, in particular to a nano-adsorption gas extraction device for unconventional reservoir rocks and a method for extracting and analyzing hydrocarbons. Background technique: [0002] In recent years, unconventional oil and gas resources, including tight oil and gas, shale gas, heavy oil, and oil sands, have been developed on a large scale, pushing the global oil industry into a new stage where both conventional and unconventional oil and gas resources are equally important. Significant progress has been made in tight oil and gas in my country, with the discovery of the Sulige tight gas area in the Ordos Basin, the Gaotaizi and Fuyu tight oil layers in the northern Songliao Basin, etc. Tight oil and gas have become the most realistic unconventional oil and gas resources and are expected to become imp...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N30/02
Inventor 张居和冯子辉霍秋立张琨周玉凯徐春龙司万霞孙晶
Owner PETROCHINA CO LTD
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