Polymer flooding and well pattern thickening combined development mode applicability evaluating method

A technology of evaluation method and development method, which is applied in the direction of mining fluid, earthwork drilling, wellbore/well components, etc., can solve the problem that the mechanism of interaction is not clearly studied, and achieves the improvement of development efficiency, wide application range, and easy operation Effect

Active Publication Date: 2019-10-18
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

Moreover, polymer flooding and well pattern intensification are carried out at the same time, and the mechanism of their interaction has not been studied clearly. It is necessary to establish an evaluation method for the applicability of oil prices in the combined development mode of polymer flooding and well pattern intensification, so as to analyze different polymer flooding and well pattern intensification. The Effect of Well Pattern Intensification Combination Development Mode

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  • Polymer flooding and well pattern thickening combined development mode applicability evaluating method
  • Polymer flooding and well pattern thickening combined development mode applicability evaluating method
  • Polymer flooding and well pattern thickening combined development mode applicability evaluating method

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Embodiment Construction

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] like figure 1 As shown, the method for evaluating the applicability of the combined development mode of polymer flooding and well pattern intensification proposed by the present invention includes the following steps:

[0043] 1. Construct an economic evaluation model for the combination of polymer flooding and well pattern intensific...

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Abstract

The invention relates to a polymer flooding and well pattern thickening combined development mode applicability evaluating method. The polymer flooding and well pattern thickening combined developmentmode applicability evaluating method is characterized by comprising the following contents that S1, a polymer flooding and well pattern thickening combined economic evaluation model is established; S2, different polymer flooding and well pattern thickening combined modes are subjected to technical evaluation; S3, economic evaluation is carried out on the different polymer flooding and well pattern thickening combined modes through the economic evaluation model, and oil price application ranges of the different combined modes are obtained; and S4, based on influences of different injection-production corresponding rates and well pattern densities, grading evaluation is carried out on oil prices of the different polymer flooding and well pattern thickening combined modes. The applicabilityevaluating method of the oil prices of the different polymer flooding and well pattern thickening combined development modes is provided, a basis is provided for determining the reasonable developmentmode, and the oilfield development benefit is further improved.

Description

technical field [0001] The invention relates to a method for evaluating the applicability of a combined development mode of polymer flooding and well pattern intensification, and relates to the technical field of petroleum development. Background technique [0002] As an important means of enhancing oil recovery, polymer flooding technology has been popularized and applied in many oilfields on a large scale. Polymers with complex structures represented by hydrophobic association polymers have been used in some heavy oil reservoirs in the Bohai Sea region of my country. Such polymers have shown good adaptability and achieved good production results. In the initial stages of offshore polymer flooding oilfields, reverse nine-spot well patterns were mostly used for production. At present, the infill method of row water injection is adopted, and at the same time, some areas are accompanied by polymer flooding. [0003] Onshore oilfields have a lot of experience that can be used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/22E21B43/30E21B49/00
CPCE21B43/16E21B43/30E21B49/00
Inventor 张凤久曾杨康晓东张健
Owner CHINA NAT OFFSHORE OIL CORP
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