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Resource development method suitable for polymer flooding

A technology of polymers and resources, which is applied in the fields of mining fluids, earthwork drilling, wellbore/well components, etc., and can solve problems such as incomplete consideration, high cost, and difficulty in realization

Active Publication Date: 2019-01-15
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a resource development method suitable for polymer flooding, which is used to solve the problems in the prior art that the process is complicated, not easy to implement and the cost is high due to incomplete consideration when determining oilfield blocks suitable for polymer flooding

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] The object of the present invention is to provide a resource development method suitable for polymer flooding, and to evaluate economical and effective polymer flooding resources under different oil prices.

[0039] The steps of this method are as follows:

[0040] 1) Screen oilfield blocks and reserves that can be produced by polymer flooding from reservoir conditions such as formation temperature, crude oil viscosity, and physical properties;

[0041] 2) In the above resources, further optimize the oilfield layers and reserves that can be produced by polymer flooding from the perspective of extremely poor permeability, thickness, well group and other conditions;

[0042] 3) Further evaluate the oilfield well groups and reserves available for polymer flooding from the conditions of remaining oil (oil saturation, recovery degree, water cut);

[0043]...

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Abstract

The invention relates to a resource development method suitable for polymer flooding, and belongs to the technical field of chemical flooding oil development. The oil reservoir condition, permeabilitydifference, thickness, well group condition and residual oil condition are taken into integrated consideration to determine an oilfield block; and resources of different reserve units are ordered according to the oil price by combining well pattern manners, value simulation and economic analysis, and a polymer flooding reserve resource corresponding to the present oil price is determined. The polymer flooding is used fully in the situation of low oil price to further improve the recovery efficiency and reduce successive decrease of maturing fields, the low-cost polymer flooding resource wellgroup screening standard is reached, and potentials of the polymer flooding resource are authenticated in the technical and economical aspects by means of an empirical formula, value simulation and economic analysis, and benefit of polymer flooding is developed.

Description

technical field [0001] The invention relates to the technical field of petrochemical flooding development, in particular to a resource development method suitable for polymer flooding. Background technique [0002] Since 2014, the growth rate of global oil and gas demand has slowed down and oversupply has caused the international oil price to fall from 108 US dollars per barrel to below 30 US dollars per barrel, and it is currently running at a low level for a long time. Polymer flooding technology can greatly increase the recovery rate, effectively inhibit the production decline of old oilfields in the ultra-high water-cut period, and make a significant contribution to the production stability. It has become the main technology that can significantly improve the development effect of old oilfields in the ultra-high water-cut period one. In the past, polymer flooding schemes were mainly designed with large-scale overall deployment under high oil prices. Due to the high cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/22
CPCE21B43/16
Inventor 李洪生张小静黎锡瑜张连峰梁丽梅钟玉龙段秋红张振平申乃敏王艳霞
Owner CHINA PETROLEUM & CHEM CORP
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