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Method, device and system for determining dessert area developed through in-situ transformation of shale oil

A determination method and technology for shale oil, applied in the field of exploration and development, can solve problems such as inaccurate evaluation results, and achieve the effect of improving accuracy

Active Publication Date: 2019-01-01
PETROCHINA CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the above method only evaluates the sweet spots of shale oil development from geological factors, and the evaluation results are not accurate enough

Method used

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  • Method, device and system for determining dessert area developed through in-situ transformation of shale oil
  • Method, device and system for determining dessert area developed through in-situ transformation of shale oil
  • Method, device and system for determining dessert area developed through in-situ transformation of shale oil

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Embodiment Construction

[0063] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification Obviously, the described embodiments are only some of the embodiments in the description, not all of them. Based on one or more embodiments in the description, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the embodiments of the description.

[0064] Shale oil refers to the general term for the petroleum hydrocarbons and unconverted organic matter that have been generated in organic-rich shale with a burial depth greater than 300 meters and low-to-medium maturity. Shale with medium and low maturity has extremely low porosity and permeability, poor connectivity, and...

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Abstract

The embodiment of the invention discloses a method, device and system for determining a dessert area developed through in-situ transformation of shale oil. The method comprises the steps that an output oil and gas potential index is determined according to the organic carbon content, the hydrogen index and the shale density; a heating shale section is determined according to the output oil and gaspotential index and a corresponding oil and gas potential index lower limit value, and the oil and gas potential index lower limit value is determined according to a well spacing mode and the shale vitrinite reflectivity; the output quantity is determined according to the thickness and the area of the shale section and output oil and gas potential index data; the rate of return on investment is determined according to the output quantity and the investment cost; and the dessert area developed through in-situ transformation of the shale oil is determined by utilizing the rate of return on investment. By utilizing the method, device and system for determining the dessert area developed through in-situ transformation of the shale oil, the accuracy of determining of the dessert area can be improved.

Description

technical field [0001] The present invention relates to the technical field of exploration and development, in particular, to a method, device and system for determining a sweet area for in-situ conversion and development of shale oil. Background technique [0002] Shale oil has become an important field of global oil exploration and development, but exploration and development practice has proved that when the vitrinite reflectance (Ro) of shale is less than 0.95%, the existing horizontal well volume pressure technology cannot achieve scale-effective development . At present, shale oil is usually developed using in-situ conversion technology, which converts unconverted organic matter and generated hydrocarbons in medium-low maturity shale into light oil and natural gas through in-situ electric heating. technology for development. [0003] At present, the product of shale oil generation and shale thickness is usually used to determine the favorable area, or the product of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00G01N33/2841G06Q40/06E21B47/00G06Q10/04
Inventor 侯连华付金华罗霞刘显阳张丽君李士祥林森虎杨智邹倩崔景伟吴松涛王京红
Owner PETROCHINA CO LTD
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