Method for predicting water-flooding development oil field output decline rate

A production decline, oil field technology, applied in the direction of measurement, production fluid, earthwork drilling and production, etc., can solve the problems of low accuracy and reliability, lack of theoretical support, etc.

Active Publication Date: 2016-10-12
PETROCHINA CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0004] The invention provides a method for predicting the production decline rate of water drive development oilfields, which solves the technical problem of lack of theoretical support in the prediction of production decline rate in the prior art, resulting in low accuracy and reliability

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  • Method for predicting water-flooding development oil field output decline rate
  • Method for predicting water-flooding development oil field output decline rate
  • Method for predicting water-flooding development oil field output decline rate

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Embodiment Construction

[0021] The embodiment of the present application provides a method for predicting the production decline rate of water flooding development oilfields, which solves the technical problem of lack of theoretical support in the prediction of production decline rate in the prior art, resulting in low accuracy and reliability; and achieves the improvement of prediction reliability and accuracy technical effect.

[0022] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0023] A method for predicting the production decline rate of waterflooding development oilfield, which uses the oil-water relative permeability curve to describe the analytical relationship between the production decline rate and the recovery degree in the production process;

[0024] Include the following steps:

[0025] By taking cylindrical rock samples from natural cores in oilfields to carry out cor...

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Abstract

The invention belongs to the technical field of oil development and provides a method for predicting the water-flooding development oil field output decline rate. An oil-water relative permeability curve is adopted to describe the analytic relation between output decline rate and recovery percent in production. The prediction method has high precision and reliability.

Description

technical field [0001] The invention relates to the technical field of oil development, in particular to a method for predicting the production decline rate of an oilfield developed by water flooding. Background technique [0002] Scientifically and effectively predicting oilfield production decline rate is an important part of oilfield development and adjustment plan index prediction, and has important guiding significance for plan deployment and supporting facilities. [0003] In the past development plan compilation index forecast, there are three main methods for selecting the production decline rate: ① test production evaluation method, that is, to calculate the production decline rate at different stages according to the production test data of early production wells; ② analogy experience method, According to the production conditions of adjacent or similar oilfields and combined with actual experience, the decline rate values ​​at different stages are selected; ③ Nume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B47/00
CPCE21B43/20E21B47/00
Inventor 陶自强
Owner PETROCHINA CO LTD
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