Method for tracing, identifying, expanding and increasing yield of water injection dominant channel of water flooding reservoir

A dominant channel and water flooding technology, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems of long-term measures, high cost, large investment, etc., achieve good results, low transformation cost, Effect of reducing proppant dosage

Pending Publication Date: 2021-12-21
BEIJING GEPETTO OIL TECH
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Problems solved by technology

[0004] Aiming at the problems of huge investment, long-term measures and high cost in the tertiary oil recovery technology in the prior art, the present invention provides a method for trace identif

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  • Method for tracing, identifying, expanding and increasing yield of water injection dominant channel of water flooding reservoir
  • Method for tracing, identifying, expanding and increasing yield of water injection dominant channel of water flooding reservoir
  • Method for tracing, identifying, expanding and increasing yield of water injection dominant channel of water flooding reservoir

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[0037] In order to make the objects, technical solutions, and advantages of the present application, the technical solutions in the present application embodiment will be described in connext of the present application embodiment, and will be described in connection with the embodiment of the present application embodiment. It is a part of the present application, not all of the embodiments. Components of the present application embodiments described and illustrated in the drawings herein can be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but only the selected embodiments of the present application. Based on the embodiments of the present application, those skilled in the art will belong to the scope of this application under the premise of creative labor.

[0038] In the descripti...

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Abstract

The invention discloses a method for tracing, identifying, expanding and increasing production of a water injection dominant channel of a water flooding reservoir, and belongs to the technical field of oil and gas exploitation. The problems that in the prior art, a tertiary oil recovery technology is huge in investment, long in measure time and high in cost are solved. According to the method, reservoir engineering methods such as tracing monitoring and numerical simulation are applied, and the injected water channeling layer position, the injected water channeling speed, the water injection dominant channel direction, the main seepage channel thickness and the water flooding sweep area in the high water cut period of the water injection development reservoir are accurately positioned. By means of the parameters, reservoir numerical simulation software is used for optimizing the plugging area, the plugging range and the plugging strength, and a water injection dominant channel plugging model is established to serve as the basis of water drive development reservoir profile control construction design. A comprehensive adjustment potential tapping method for profile control of a high-permeability reservoir section of a water injection well of a high-water-cut-period water injection development oil reservoir and hydraulic capacity expansion and augmented injection of a low-permeability reservoir section is adopted, the applicability is higher, the potential tapping measure effect is better, and the method is economical, environmental-friendly and easy and convenient to construct.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploitation, and in particular relates to a method for trace identification and capacity expansion and production increase of water flooding oil reservoir water injection dominant channels. Background technique [0002] Most of the water-flooding reservoirs in my country have been put into production for decades, and the remaining oil is trapped in the sandstone pores of the reservoirs in discontinuous oil blocks. High water cut, high recovery and low water injection efficiency have become the main contradictions in the development of water drive reservoirs. Research on how to develop high water cut reservoirs has become the main way to solve the current difficulties in water drive reservoir development. Field tests at home and abroad mainly use tertiary oil recovery technologies such as alkali flooding to reduce oil-water interfacial tension, polymer flooding to increase the swept volume of i...

Claims

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Application Information

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IPC IPC(8): E21B47/11E21B43/20
CPCE21B47/11E21B43/20E21B2200/20
Inventor 敖科曾斌徐太平白华刘想平钟萍萍
Owner BEIJING GEPETTO OIL TECH
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