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A Method for Evaluating Spatial Distribution Characteristics of Undiscovered Resources

A technology for discovering resources and spatial distribution, which is applied in the field of oil drilling, and can solve the problems that the existing technology is difficult to apply and the evaluation of distribution characteristics is difficult.

Active Publication Date: 2019-04-02
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In short, in basins with low exploration degree or limited data base, it is very difficult to carry out "evaluation of spatial distribution characteristics of undiscovered resources", and the existing technology is difficult to apply

Method used

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  • A Method for Evaluating Spatial Distribution Characteristics of Undiscovered Resources

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Embodiment

[0049] Several natural gas reserves have been discovered in a certain basin in Mozambique, East Africa in recent years, but it is an offshore basin, so the development of natural gas is difficult and the economics are not clear. However, if the amount of resources is large and concentrated in a few units with a small area, it is possible to use less engineering investment to realize the development of as many resources as possible, thus achieving economical development.

[0050] The total area of ​​known basins is 36,650 square kilometers, 18 gas fields have been discovered, and the recoverable resources are 136tcf. According to the forecast of USGS, the average amount of undiscovered resources in this basin is 182tcf.

[0051] 1) Determine the evaluation unit

[0052] Since there is only one oil and gas system in this basin (Jurassic-Tertiary oil and gas system), the entire offshore basin area can be used as the distribution range of the oil and gas system. maritime.

[00...

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Abstract

The invention proposes a method for evaluating the spatial distribution features of a to-be-discovered resource quantity, and the method at least comprises the following steps: 1, determining an evaluation unit; 2, subjectively setting an unit area of evaluation; 3, determining the total amount of to-be-discovered oil and gas resources and the number of oil and gas fields; 4, determining the distribution features of the total amount of to-be-discovered oil and gas resources and the number of oil and gas fields in the unit area; 5, carrying out the meshing of the evaluation unit; 6, generatingcontrol groups of the discovered oil and gas resources and the number of oil and gas fields in the unit area; 7, carrying out the judgment through a hypothesis verification method. The method can effectively solve a problem of evaluating the spatial distribution features of the to-be-discovered resources in a basin which is low in degree of prospecting or is limited in data.

Description

technical field [0001] The invention relates to the field of oil drilling, in particular to a method for evaluating the spatial distribution characteristics of resources to be discovered. Background technique [0002] The existing undiscovered resource potential evaluation technologies can be roughly divided into three categories: (1) technologies for evaluating the total amount of undiscovered oil and gas resource potential within a basin scale; technology for evaluating recoverable natural gas resources, and (3) technology for evaluating the spatial distribution of undiscovered resources of solid minerals. [0003] For (1) the technology for evaluating the total potential of oil and gas resources to be discovered within the basin scale, there are a lot of open literature and different types of evaluation methods, and corresponding commercial software has also been developed in the prior art. However, its overall feature is to consider the total amount of oil and gas resou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V9/00
Inventor 丁峰邬长武熊利平
Owner CHINA PETROLEUM & CHEM CORP
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