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Method for predicting tight oil sweet point target area

A technology for tight oil and target areas, applied in the field of petroleum exploration, can solve the problems of high risk in tight oil exploration and development, and achieve the effect of small development risk, convenient and accurate prediction

Inactive Publication Date: 2017-01-11
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] The present invention provides a method for predicting the sweet spot target area of ​​tight oil, so as to overcome the technical problem of high risk in tight oil exploration and development caused by the unreliable method for predicting the sweet spot target area of ​​tight oil in the prior art

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  • Method for predicting tight oil sweet point target area
  • Method for predicting tight oil sweet point target area
  • Method for predicting tight oil sweet point target area

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Embodiment Construction

[0016] 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 creative efforts fall within the protection scope of the present invention.

[0017] Tight oil is petroleum that occurs in tight reservoirs, and is an important unconventional oil and gas resource with huge exploration potential. Tight oil sweet spot target areas refer to areas with relatively high oil and gas saturation in tight reservoirs, which are the main areas for tight oil exploration. Aiming at the deficiencies of ...

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Abstract

The invention provides a method for predicting a tight oil sweet point target area. The method includes the steps that the space allocation relation between a tight oil reservoir corresponding to a to-be-exploited oil well and various source rocks corresponding to the tight oil reservoir is determined, then at least one reservoir combination type corresponding to the to-be-exploited oil well is determined according to the space allocation relation, then a reservoir combination type matched with a preset reservoir combination type is determined in the at least one reservoir combination type, and finally at least one tight oil sweet point target area is determined according to the reservoir combination type with the oil saturation meeting preset conditions. By means of the method, the tight oil sweet point target area is conveniently and accurately predicted on the basis of data of the exploited well, and tight oil exploration and development risks are small.

Description

technical field [0001] The invention relates to petroleum exploration technology, in particular to a method for predicting a target area of ​​a tight oil sweet spot. Background technique [0002] Tight oil is petroleum that occurs in tight reservoirs, and is an important unconventional oil and gas resource with huge exploration potential. Tight oil reservoirs are ultra-low porosity and ultra-low permeability tight reservoirs with an overall porosity less than 10% and an overall permeability less than 1mD. The sweet spot area of ​​tight oil refers to the relatively high density of tight oil reservoirs locally developed under the overall tight background. Pores and areas with relatively high permeability and relatively high oil and gas saturation are the main areas for tight oil exploration and development. [0003] In the prior art, Chinese and foreign scholars all use to search for areas with relatively high porosity and permeability in tight oil reservoirs that are adjacen...

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Application Information

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IPC IPC(8): G01N33/28G01V9/00
CPCG01N33/2823G01V9/00
Inventor 罗群朱德宇王信棚
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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