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Reasonable liquid extracting method specific to roof ridge fault block oil reservoir

A technology of oil reservoirs and fault blocks, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems of oil wells such as violent water flooding, poor development effect, and production decline, so as to increase oil well production, Good development effect and high success rate of measures

Inactive Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

However, in practical applications, some oil reservoirs experienced violent water flooding after liquid extraction, and the production decreased instead, resulting in poor development results.

Method used

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  • Reasonable liquid extracting method specific to roof ridge fault block oil reservoir
  • Reasonable liquid extracting method specific to roof ridge fault block oil reservoir
  • Reasonable liquid extracting method specific to roof ridge fault block oil reservoir

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Embodiment Construction

[0015] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0016] Such as figure 1 as shown, figure 1 It is a flowchart of a reasonable liquid extraction method for roof fault block reservoirs of the present invention.

[0017] In step 101, according to the conditions such as the geological parameters and the development stage of the reservoir, determine the fault-block reservoir at the ridge where liquid extraction measures can be implemented. The reservoir should meet the following conditions: the average oil-bearing stripe width is >150 meters, the stripe width difference within the formation is <3; the permeability difference within the formation is between 2 and 7; the water cut of the oil well is more than 70%. The process goes to step 102.

[0018] In step 102, analyze the development status of...

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Abstract

The invention provides a reasonable liquid extracting method specific to a roof ridge fault block oil reservoir. The reasonable liquid extracting method specific to the roof ridge fault block oil reservoir comprises the steps that 1, according to the geological parameters and the exploitation stage of an oil reservoir, the roof ridge fault block oil reservoir where a liquid extracting measure can be conducted is determined; 2, exploitation condition analysis is conducted on the selected oil reservoir, and the current open oil-water well condition is mainly analyzed; and 3, according to the actual conditions of the oil reservoir, the technical policies such as the liquid extracting range, the liquid extracting mode, oil reservoir average formation pressure keeping level for conducting the liquid extracting measure are determined. Through the reasonable liquid extracting method specific to the roof ridge fault block oil reservoir, timely and reasonable liquid extracting for the roof ridge fault block oil reservoir can be effectively guided, and technical support is provided for keeping the stable yield and improving the development effect for the roof ridge fault block oil reservoir in an ultrahigh water-cut stage.

Description

technical field [0001] The invention relates to the fields of stabilizing production and improving development effects of fault block oil reservoirs, in particular to a reasonable liquid extraction method for roof fault block oil reservoirs. Background technique [0002] Roof fault block reservoirs are characterized by a certain dip in structure and edge water with certain energy at the edge, and the well pattern of low injection and high production is mostly adopted. At present, most fault-block reservoirs in old areas have entered the stage of ultra-high water-cut development, making it more difficult to stabilize production. Liquid extraction is a production stabilization measure widely used by mines in the late stage of reservoir development. However, in practical applications, some oil wells experienced violent water flooding after liquid extraction, and the production decreased instead, resulting in poor development results. Therefore, according to the characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
Inventor 杨勇王建张红宋志超吴义志王瑞李钢李文静薛玉荣胡罡孙宁宁玄建杨姝
Owner CHINA PETROLEUM & CHEM CORP
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