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Method and device for calculating quantity of resources of continuous oil and gas reservoir based on space grids

A technology of spatial grid and resource quantity, applied in the field of unconventional oil and gas resource evaluation, can solve the problems of insufficient global oil and gas resource evaluation and low applicability, etc.

Inactive Publication Date: 2016-04-27
PETROCHINA CO LTD
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Problems solved by technology

However, the applicability of this method is relatively small, and it is mainly suitable for relatively high-exploration blocks with a large number of production wells, and the evaluation of global oil and gas resources is still insufficient

Method used

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  • Method and device for calculating quantity of resources of continuous oil and gas reservoir based on space grids
  • Method and device for calculating quantity of resources of continuous oil and gas reservoir based on space grids
  • Method and device for calculating quantity of resources of continuous oil and gas reservoir based on space grids

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specific Embodiment

[0207] Using Ben Fangming's method, the geological resources and recoverable resources of Barnett shale oil in the Fort Worth Basin of North America were predicted.

[0208] (1) The Barnett shale formation is selected as the object to be processed. The shale formation is distributed in the Fort Worth Basin, located in north-central Texas, USA. Fort Worth Basin has an area of ​​about 38100km 2 , is a foreland basin formed by the Ouachita orogeny in the late Paleozoic Era, and the whole basin is a wedge-shaped depression that deepens toward the north. Based on the geological conditions of the Fort Worth Basin in North America, the main intervals, rock types, and rock combination types of shale gas production were determined; geochemical data were used to determine the characteristics of oil-generating source rocks in the block, including the thickness of source rocks, the abundance of organic matter TOC, organic matter type, and plane distribution of organic matter composition,...

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Abstract

The invention provides a method for calculating the quantity of resources of continuous oil and gas reservoir based on space grids. The method comprises the following steps: dividing an evaluation area into a plurality of basic evaluation units in the space according to the similarity of geologic feature attributes; determining key parameters that each basic evaluation unit has obvious heterogeneity in a plane, and collecting space data of the key parameters in the evaluation area and carrying out space vectorization on the data; dividing each basic evaluation unit of the evaluation area into grids equal in size; endowing recovery ratio data to each grid by an EUR (Estimated Ultimate Recovery) evaluation or analogy method; carrying out interpolation on the space data of the key parameters in the evaluation area, and endowing key parameter data to each grid; calculating the quantity of geologic resources and the quantity of recoverable resources of each grid by adopting a volumetric method according to the key parameter data and the recovery ratio data of each grid; carrying out integration on all the grids and calculating the quantity of geologic resources and the quantity of recoverable resources of the whole evaluation area. According to the method provided by the invention, the evaluation precision and the primary evaluation efficiency of oversea blocks are improved, rapidness and convenience are achieved, and the production demands can be satisfied.

Description

technical field [0001] The invention relates to the field of evaluation of unconventional oil and gas resources, in particular to a method and device for calculating continuous oil and gas reservoir resources based on spatial grids. Background technique [0002] Unconventional oil and gas is put forward relative to conventional oil and gas. It mainly refers to oil and gas with continuous distribution, no clear boundaries between traps and cap rocks, poor fluid differentiation, and no unified oil-water interface. From the configuration of source rocks and reservoirs It can be divided into two categories, one is shale gas, shale oil, coalbed methane and oil shale with source rocks as the evaluation objects, which have the characteristics of accumulation in the source or near the source; the other is the core of reservoirs Evaluation objects include heavy oil, oil sands, tight gas and tight oil, and their reservoirs are mostly tight or damaged later. In recent years, great cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06Q50/06
CPCG06Q50/06G16Z99/00
Inventor 刘祚冬吴珍珍王红军马锋张新顺汪永华米石云
Owner PETROCHINA CO LTD
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