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Correction method of light and heavy hydrocarbon of free hydrocarbon/residual hydrocarbon S1 in pyrolysis rock

A technology for free hydrocarbons and residual hydrocarbons, which is applied in seismic signal processing and other directions, and can solve the problems of needing closed coring and high price.

Inactive Publication Date: 2014-01-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

This solution only corrects the loss of light hydrocarbons in sandstone reservoirs, and requires sealed coring, which is expensive

Method used

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  • Correction method of light and heavy hydrocarbon of free hydrocarbon/residual hydrocarbon S1 in pyrolysis rock
  • Correction method of light and heavy hydrocarbon of free hydrocarbon/residual hydrocarbon S1 in pyrolysis rock
  • Correction method of light and heavy hydrocarbon of free hydrocarbon/residual hydrocarbon S1 in pyrolysis rock

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Experimental program
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Embodiment 1

[0028] S measured by Rock-Eval pyrolysis 1 and S 2 , using chloroform extraction to remove the residual oil in the rock sample, and performing Rock-Eval pyrolysis again, the measured S 1 ’ and S 2 ’, there is an essential difference between the two pyrolyzed samples. The directly pyrolyzed sample contains both free hydrocarbons and kerogen, while the extracted sample contains only kerogen. Therefore, the measured S 2 contains not only the hydrocarbons produced by kerogen cracking, but also the heavy part of free hydrocarbons, while S 2 ’ includes only hydrocarbons produced by kerogen cracking, S 1 For free hydrocarbons (excluding entering S 2 heavy hydrocarbons), while S 1 ’ means that the free hydrocarbons in the sample have not been extracted, and its content is very small. Define S according to the meaning of each parameter 1 The correction factor for heavy hydrocarbons is:

[0029]

[0030] from image 3 It can be seen that the loss of heavy hydrocarbons in mud...

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Abstract

Provided is a correction method of light and heavy hydrocarbon of free hydrocarbon / residual hydrocarbon S1 in a pyrolysis rock, and the light and heavy hydrocarbon of the free hydrocarbon / residual hydrocarbon S1 in the pyrolysis rock is a key parameter for evaluating the resources potential of shale oil. The correction method of the light and heavy hydrocarbon of the free hydrocarbon / residual hydrocarbon S1 in the pyrolysis rock solves the problem of loss of the light and heavy hydrocarbon when the shale oil resources are evaluated. The correction method of the parameter is established based on experiments, the free hydrocarbon / residual hydrocarbon S1 in existing data of an oil field is corrected in a compensation mode, and therefore the quantity of resource of the shale oil is corrected in an evaluation mode through the correction method of S1.

Description

technical field [0001] The present invention relates to a key parameter for evaluation of shale oil resource potential - free hydrocarbon / residual hydrocarbon S in pyrolysis rock 1 Light and heavy hydrocarbon correction method. Background technique [0002] The increasing demand for energy and the continuous consumption of conventional oil and gas resources have made the contradiction between oil and gas supply and demand increasingly prominent. Therefore, unconventional energy sources are getting more and more attention. As an important part of unconventional energy, shale oil has strengthened its exploration at home and abroad. As an important part of oil and gas exploration, resource calculation is one of the essential steps in shale oil exploration. As shale oil is a typical unconventional resource, the parameters selected in the resource evaluation process are obviously different from conventional oil and gas resource evaluation. , Conventional resources can usually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
Inventor 王民陈国辉卢双舫薛海涛田善思
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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