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Evaluation method of absolute oil accumulated transformation rate

A conversion rate and crude oil technology, which is applied in the evaluation field of cumulative conversion rate of net oil, can solve the problems of ineffective utilization, difficult definition of primary cracking and secondary cracking, expensive experiment costs, etc.

Inactive Publication Date: 2015-06-10
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

It is difficult to clearly define the primary cracking and secondary cracking in experiments under a closed system, the evaluation results are biased, and the experimental cost is expensive; in addition, the existing PY-GC experimental data (open system) in oil fields and scientific research units cannot be carried out. effective use

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  • Evaluation method of absolute oil accumulated transformation rate
  • Evaluation method of absolute oil accumulated transformation rate
  • Evaluation method of absolute oil accumulated transformation rate

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0035] Such as figure 1 As shown, the evaluation method of net oil cumulative conversion rate proposed by the present invention includes the following steps:

[0036] 1) Carry out thermal simulation experiments, including the Rock-Eval (rock pyrolysis) experiment of the open system, the PY-GC experiment and the gold tube experiment of the closed system:

[0037] ①Select representative shale samples

[0038] Take Well An17 in Damintun Sag, Liaohe Depression as an example, extract shale samples from this well, and then perform Rock-Eval and PY-GC experiments on the shale samples to detect cheese in the shale samples The oil and gas products generated by the initial cracking of roots, and then the cumulative conversion rate of kerogen cracking into liquid hydrocarbons and gaseous hydrocarbons at different temperatures (as shown in Table 1 and Table 2), where C 1 -C 5 Is gas...

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Abstract

The invention relates to a evaluation method of an absolution oil accumulated transformation rate. The evaluation method of the absolute oil accumulated transformation rate comprises the following steps: 1) implementing thermal simulation experiments, including a rock pyrolysis experiment and a pyrolysis gas chromatography experiment of an open system, as well as a gold-tube experiment of a closed system, so as to acquire accumulated transformation rates when kerogen is disintegrated into a liquid state hydrocarbon and a gas state hydrocarbon at different temperatures, as well as accumulated transformation rates when a crude oil is disintegrated into a gas at different temperatures; 2) establishing chemical kinetics models of disintegrating kerogen into the liquid state hydrocarbon, disintegrating kerogen into a colloid, disintegrating kerogen into asphaltene, as well as disintegrating the crude oil into the gas; acquiring, through optimized solutions, chemical kinetics parameters of disintegrating kerogen into the liquid state hydrocarbon and disintegrating the crude oil into the gas; 3) determining pyrolysis gas output rates of the colloid and the asphaltene; 4) determining a final proportion of disintegrating kerogen into the colloid and the asphaltene; 5) calculating an accumulated transformation rate of forming an oil by kerogen under geological conditions; and 6) calculating an accumulated transformation rate of the absolute oil under the geological conditions. The evaluation method of the absolute oil accumulated transformation rate can be widely applied to evaluating the accumulated transformation rate of the absolute oil in the evaluation process of the source rock petroleum generation amount.

Description

Technical field [0001] The invention relates to a method for evaluating the cumulative conversion rate of net oil, in particular to a method for evaluating the cumulative conversion rate of net oil in the process of evaluating the oil production of source rocks. Background technique [0002] The shale PY-GC (pyrolysis chromatography) experiment is a temperature-programmed pyrolysis experiment conducted under an open system to detect the yield of each hydrocarbon component at different temperatures, and use the principle of time-temperature complementarity to shorten the organic matter by increasing the temperature Hydrocarbon generation time, and then use the principle of hydrocarbon generation kinetics to study the hydrocarbon generation process, and apply it to the dynamic evaluation of the hydrocarbon generation process under geological conditions. The oil and gas generated from kerogen include saturated hydrocarbons, aromatic hydrocarbons, gums and asphaltenes. Among them, sa...

Claims

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Application Information

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IPC IPC(8): G01N30/00
Inventor 陈国辉卢双舫李进步田善思薛海涛王民穆国栋颜鑫桐卢志鑫王新沈珊
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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