Method and device for acquiring oil-reservoir geologic reserves with gravitational differentiation phenomenon

A technology of geological reserves and gravity differentiation, which is used in earth-moving drilling, wellbore/well components, etc., can solve the problems of crude oil geological reserves errors and low crude oil geological reserves accuracy.

Inactive Publication Date: 2018-03-13
PETROCHINA CO LTD
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Problems solved by technology

If the crude oil geological reserves are still calculated according to industry standards, the error of the crude oil geological reserves will be large
[0004] However, the accuracy of crude oil geological reserves in the prior art is not high

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  • Method and device for acquiring oil-reservoir geologic reserves with gravitational differentiation phenomenon
  • Method and device for acquiring oil-reservoir geologic reserves with gravitational differentiation phenomenon
  • Method and device for acquiring oil-reservoir geologic reserves with gravitational differentiation phenomenon

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Embodiment Construction

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0077] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances ...

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Abstract

The invention provides a method and device for acquiring oil-reservoir geologic reserves with a gravitational differentiation phenomenon, and belongs to the technical field of petroleum exploration and development. The method for acquiring the oil-reservoir geologic reserves with the gravitational differentiation phenomenon comprises the steps that preset parameters of N subregions are obtained, specifically, the preset parameters of the subregions comprise subregion oil-bearing areas, subregion effective thicknesses, subregion effective porosities, subregion oil saturation and subregion crudeoil volume factors; and the crude oil geologic reserves of the volume unit of a preset area are acquired according to the preset parameters of the N subregions, and the preset area is divided into the N subregions, wherein N is an integer greater than or equal to 2. According to the method and device for acquiring the oil-reservoir geologic reserves with the gravitational differentiation phenomenon, the accuracy degree of the crude oil geologic reserves is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration and development, in particular to a method and device for obtaining geological reserves of oil reservoirs with gravity differentiation phenomenon. Background technique [0002] Normally, crude oil is stored deep underground in the form of liquid. When the crude oil is extracted to the surface, the natural gas dissolved in the liquid crude oil will be separated due to the low pressure on the surface. This separated natural gas is called for dissolved gas. [0003] In the prior art, for crude oil reservoirs with small amplitude and oil column height, the amount of natural gas separated from underground crude oil at different positions in the reservoir is almost equal, and the density of surface crude oil is basically the same. Therefore, crude oil geological reserves can be calculated according to petroleum industry standards (this industry standard is usually only applicable to crude...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 伍藏原罗敏周代余阳建平罗浩渝
Owner PETROCHINA CO LTD
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