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Adjustment method of variable flow line vector of thick-stratum oil deposit

An adjustment method and streamline technology, applied in the fields of fluid production, earthwork drilling, special data processing applications, etc., which can solve the problems of intensified reservoir heterogeneity, unbalanced displacement of remaining oil, and impact on water flooding development effect.

Inactive Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

Considering the time-varying characteristics of the reservoir, the heterogeneity of the reservoir in the ultra-high water cut period will be further intensified after long-term water flooding, resulting in unbalanced displacement of remaining oil and seriously affecting the development effect of water flooding

Method used

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  • Adjustment method of variable flow line vector of thick-stratum oil deposit
  • Adjustment method of variable flow line vector of thick-stratum oil deposit
  • Adjustment method of variable flow line vector of thick-stratum oil deposit

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Embodiment Construction

[0026] In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are listed below and shown in the accompanying drawings in detail as follows.

[0027] Such as figure 1 as shown, figure 1 It is a flow chart of a specific embodiment of a thick-bed oil reservoir variable flow line vector adjustment method of the present invention. This method takes into account the long-term development of a regular well pattern, and also considers the geological characteristics of the reservoir and the change of remaining oil in the ultra-high water-cut period.

[0028] At step 101, a reservoir heterogeneity study is performed. Based on fine logging interpretation parameters, study the plane variation of reservoir parameters, describe the development characteristics of interlayers at well points and between wells, and finely describe reservoir heterogeneity. The process goes to step 102.

[0029] In step 102...

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Abstract

The invention provides a method for adjusting the variable flow line vector of thick-bed oil reservoirs. The method for adjusting the variable flow line vector of thick-bed oil reservoirs includes: step 1, conducting reservoir heterogeneity research; step 2, establishing a numerical simulation model, and Carry out history matching; step 3, conduct research on the distribution of remaining oil saturation; step 4, carry out the design of the well pattern variable flowline adjustment scheme; step 5, use numerical simulation technology to predict the ultimate recovery of the variable flowline scheme, according to Then optimize the variable streamline scheme; step 6, optimize the water injection parameter vector, and use numerical simulation technology to predict the final recovery factor of the vector water injection parameter optimization scheme. The variable streamline vector adjustment method for thick-bed reservoirs is highly practical, and can effectively slow down the production decline and water-cut rise of thick-bed reservoirs during the ultra-high water cut period, and improve the water flooding development effect.

Description

technical field [0001] The invention relates to the field of water flooding development and adjustment of thick-bed oil reservoirs in ultra-high water-cut period, in particular to a variable streamline vector adjustment method for long-term development of thick-bed oil reservoirs using regular well patterns. Background technique [0002] Water injection development is the main body of oilfield development. Entering the ultra-high water-cut development stage, due to the long-term fixed distance between injection and production wells, the remaining oil saturation in the diversion line area is much higher than the mainstream line, and the remaining oil enrichment area is formed in the oil well row and the diversion line between the oil and water well rows, and the water flooding development effect Gradually worsened. Considering the time-varying characteristics of the reservoir, after long-term water flooding, the heterogeneity of the reservoir in the ultra-high water-cut peri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20G06F17/50
Inventor 孙焕泉杨勇李琴孙永杰姚练平佟颖刘志宏陈瑞黄迎松陈德坡唐从见贾元元陈燕虎王宁陶丽张伟伟房士然
Owner CHINA PETROLEUM & CHEM CORP
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