Reservoir fracture determining method

A technology of reservoirs and fractures, applied in the field of oil exploration, to achieve the effect of improving accuracy, reducing risks and costs

Active Publication Date: 2012-11-21
恒泰艾普集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the defects in the prior art, the present invention solves the problem of optimization of various crack prediction methods

Method used

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Embodiment

[0030] figure 1 It is a method for determining reservoir fractures of the present invention, and the method comprises the following steps:

[0031] S101: Obtain the properties and distribution of reservoir fractures;

[0032] In this step, performing fracture prediction and analysis on the actual seismic data according to the type of the actual seismic data, to obtain the properties and distribution of reservoir fractures;

[0033] And before this step, it may further include: receiving micro-resistivity scanning imaging FMI data and actual seismic data beside the same logging well. Specifically, it can be realized through the following steps: collect two types of data on the same logging, one is logging data, and the other is seismic data. Among them, logging data can be obtained directly through logging survey, and seismic data can be Acquisition of nearby seismic data is realized.

[0034] In this step, it further includes: when the actual seismic data is pre-stack data,...

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Abstract

The invention discloses a reservoir fracture determining method, which comprises the steps of conducting fracture prediction analysis to actual seismic data through various methods according to types of the actual seismic data to obtain reservoir fracture attribute and distribution; conducting forward modeling by using actual geologic parameters and comparing reservoir fracture distribution by using FMI (Formation MicroScanner Image) data to obtain matching degree and goodness of fit; and according to the matching degree and the goodness of fit, preferably selecting an optimum fracture analysis method from various fracture prediction and analysis methods, and according to the preferably selected fracture analysis method, explaining the actual seismic data to determine reservoir fractures. The reservoir fracture determining method has the advantages that the problem in accurately obtaining reservoir fracture development parameters is solved; the fracture direction and density of fractured reservoirs can be effectively predicted and reliable bases are provided for researches on the fractured reservoirs; and bases are provided and directions are pointed out for work such as oilfield and gas field development plan design of fractured reservoirs, and the exploitation and development risks and costs are decreased.

Description

technical field [0001] The invention relates to the field of petroleum exploration and is applied to reservoir prediction technology, in particular to a method for determining the development characteristics of reservoir fractures. Background technique [0002] With the development and utilization of oil and gas resources, the reserves of conventional porous oil and gas reservoirs are decreasing day by day, and the difficulty of development is gradually increasing. The direction of oil and gas exploration has gradually shifted from shallow to deep, and from conventional oil and gas reservoirs to special oil and gas reservoirs. Some foreign oil-rich countries have gradually attached importance to the study of fractured reservoirs in tight low-permeability rocks. According to the prediction of the US Department of Energy: before 2010, about 20% of the natural gas will be produced from fractured reservoirs such as carbonate rock and tight sandstone; before 2030, more than half ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
Inventor 张志让孙庚文杨绍国邓林秦钢平汤金彪
Owner 恒泰艾普集团股份有限公司
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