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Disision method of plugging water for integral regulating profile of water flood oil field

A decision-making method and block technology, which can be used in earth-moving drilling, surveying, wellbore/well components, etc., and can solve problems such as the decision-making method of deep control and drive technology that is not seen.

Inactive Publication Date: 2005-01-05
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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Problems solved by technology

Looking at the decision-making technologies at home and abroad, there is no decision-making method suitable for deep control and drive technology

Method used

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  • Disision method of plugging water for integral regulating profile of water flood oil field
  • Disision method of plugging water for integral regulating profile of water flood oil field
  • Disision method of plugging water for integral regulating profile of water flood oil field

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation steps.

[0020] In actual operation and implementation, the inventor realized the overall profile control and water shutoff decision in the water injection oilfield block according to the following steps, namely:

[0021] 1. Calculation of plane heterogeneity decision coefficient

[0022] Step 1: According to the indication curve of the water injection well, determine the starting pressure P of the reservoir water absorption 0 ;

[0023] The indication curve of the water injection well reflects the formation water absorption law and the size of the water absorption capacity, and the indication curve of the water injection well is regressed to obtain the following equation.

[0024] P=kq+P 0 (1)

[0025] In the formula, P-the wellhead tubing pressure of the water injection well during normal water injection, M...

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Abstract

The invention provides a calculating the plane heterogeneous decision coefficient and the longwise heterogeneous decision coefficient according to the flooding pressure loss curve, absorbing cross section, oil water well corresponding relation, oil water well production month data and drill electric side explanation data, and then: (1) determines the connection relation of the oil water well, namely the primary flow direction of the water in flooding well and the primary water supplying source of the producing well; (2) judges the necessity of block allotment; (3) selects the well needed to be allotted; (4) determines the blocking agent compound and the setting mode; (5) determines the allotting mode; (6) determines the dose of the blocking agent; (7) estimates the allotting effect.

Description

Technical field: [0001] The invention relates to a decision-making method for profile control and water shutoff in an oilfield, that is, the overall profile control and water shutoff decision-making technology for a water injection development oilfield block, which provides an effective decision-making method for the formulation and implementation of a profile control and oil displacement plan for a water injection development oilfield method. Background technique: [0002] The current research and field experience show that the overall block profile control is an important measure to improve the effect of water injection development in the high water cut period. It can improve the uneven advancement of injected water, thereby increasing the utilization rate of injected water and improving oilfield development. Effect. From the perspective of the development trend of profile control and water shutoff technology, the research work of deep profile control and flooding has bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13E21B49/00
Inventor 张贵才葛际江殷艳玲孙铭勤周洪涛
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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