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Oil-water well linkage profile control method

An oil-water well and profile control technology, which is applied to earth-moving drilling, wellbore/well components, and production fluids, etc., can solve the problems of poor profile control effect and small improvement of water absorption profile, and improve the liquid production profile of oil wells. , the effect of increasing the swept area of ​​water injection and improving oil recovery

Pending Publication Date: 2022-03-01
PETROCHINA CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a joint profile control method for oil and water wells to solve the problem that the profile control of a single water well gradually reduces the improvement of the water absorption profile, resulting in the continuous deterioration of the profile control effect

Method used

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Embodiment Construction

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0030] Aiming at the unsatisfactory profile control effect of a single water well, the inventor changed the technical thinking, and took the profile control well group formed by the profile control well and its corresponding oil well as the overall goal, and proposed a joint profile control method for oil and water wells, as shown in Figure 5 As shown, the method includes:

[0031] Step S1: selecting the target water well and the target oil well connected to the target water well as the profile control well group;

[0032] Step S2: Implement profile control operations on the target water well, and simultaneously implement oil well linkage operations on the target oil wells, and the oil well linkage operations include one or more...

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Abstract

The invention provides an oil-water well linkage profile control method. The oil-water well linkage profile control method comprises the steps that a target water well and a target oil well communicated with the target water well are selected as a profile control well group; and profile control operation is carried out on the target water well, meanwhile, oil well linkage operation is carried out on the target oil well, and the oil well linkage operation comprises one or more of water plugging operation, oil extraction operation, reservoir transformation operation and sand prevention operation. The oil-water well linkage comprehensive treatment technology is implemented on oil-water wells with good reservoir stratum corresponding relations, oil-water well measures are implemented at the same time, the oil-water wells conduct production in a coordinated mode, the problem that remaining oil between the oil-water wells cannot be effectively used is solved, water well water absorption profiles and oil well liquid production profiles are effectively improved, the water injection swept area is increased, and the production efficiency is improved. And the recovery efficiency of the oil well is improved.

Description

technical field [0001] The invention relates to the technical field of oil recovery engineering, in particular to an oil-water well linkage profile control method. Background technique [0002] As oilfield development enters the middle and late stages, between oil and water wells with better connectivity, long-term water injection development is likely to cause ineffective water injection circulation, and the comprehensive water cut of oil wells is high. As a tertiary oil recovery technology, water well profile control technology plays a vital role in increasing oil production and stabilizing production in oilfields. However, with the deepening of the profile control work of water wells, the wells with good production stability and production increase have implemented multiple rounds of profile control. Whether it is the implementation of profile control at the proximal end of the well or the deep profile control of the well, the water absorption profile has gradually improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/20E21B33/13E21B43/30
CPCE21B43/20E21B33/13E21B43/30
Inventor 陈学亮郭道宏杨霜陈银虎杨雄刘斯迪安伯乐魏军郑宇航
Owner PETROCHINA CO LTD
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