Method for quantitatively characterizing influence of deformation zone on fluid injection and production efficiency
A technology for quantitative characterization and deformation zone, applied in the fields of production fluid, measuring device, earthwork drilling and mining, etc., can solve the problem of not being able to accurately understand and evaluate the influence of injection-production efficiency caused by fluid flow control in the deformation zone, and achieve high accuracy , good yield, and the effect of improving accuracy
Active Publication Date: 2019-06-28
NORTHEAST GASOLINEEUM UNIV
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[0005] The purpose of the present invention is to provide a method for quantitatively characterizing the influence of deformation zones on fluid injection and production efficiency. This method for quantitatively characterizing the influence of deformation zones on fluid injection and production efficiency is used to solve the current inability to accurately understand and evaluate deformation zones in high-porosity rocks The influence of the development of the development on the fluid flow control and the injection-production efficiency
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[0035] Below in conjunction with accompanying drawing, the present invention will be further described:
[0036] This method of quantitatively characterizing the influence of deformation zones on fluid injection and production efficiency includes the following steps:
[0037] The first step is to establish a conceptual model;
[0038] 1. Establishment of a conceptual model of the structure of a high-porosity fault zone: According to the data of the actual research area, clarify the structural characteristics of the fractured zone in the high-porosity fault zone, such as cores taken from core wells and field outcrops, the structural characteristics of the fractured zone in the high-porosity fault zone can be clarified through actual observations, and the deformation can be further determined If there is no actual coring or outcrop data, the characteristics of the well logging response (RLLD, RLLS deep and shallow laterolog resistivity are relatively high, but the amplitude di...
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Abstract
The invention relates to a method for quantitatively characterizing the influence of a deformation zone on fluid injection and production efficiency, which comprises the following steps of: establishing a high-porosity fault zone structure conceptual model and a high-porosity homogeneous stratum conceptual model; setting the width, number and permeability of the developed deformation zone in the high-porosity fault zone structure conceptual model; calculating the average permeability of the high-porosity fault zone structure conceptual model under different permeability conditions; establishing a standard chart for quantitatively characterizing the influence of the deformation zone on the injection and production efficiency by using the injection and production efficiency and the corresponding ratio of the permeability of the parent rock to the permeability of the deformation zone, quantitatively analyzing the influence of the deformation zone in the fault fracture zone of a research area on the injection and production efficiency under different numbers and different permeabilities, or predicting and evaluating the influence of the deformation zone on the injection and productionefficiency according to the projection points of the actual measurement of the permeability data of the deformation zone on the standard chart. By establishing a standard chart for quantitatively evaluating the influence of the deformation zone on the injection and production efficiency, the accuracy of evaluating the deformation zone on the injection and production efficiency is improved.
Description
Technical field: [0001] The present invention relates to a characterization method of the influence of deformation zone development on fluid flow in the technical field of oil and gas reservoir geological exploration and development, and specifically relates to a method based on Darcy's law and geological models to quantitatively characterize the impact of deformation zones in fractured zones on fluid injection and production. Characterization method for efficiency impact. Background technique: [0002] In petroleum basins, faults play an important role in the migration, accumulation and development of oil and gas. Under actual geological conditions, a fault is not a single plane, but a "belt" with a certain internal structure and width. Fault zones are complex three-dimensional geological bodies that have undergone multi-phase tectonic movements and fluid flow transformations. They have a typical "dual structure" and generally develop fault cores and fracture zones. Among...
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IPC IPC(8): E21B49/00E21B43/16G01N15/08
Inventor 刘志达孙永河杨德相曹兰柱付晓飞王海学
Owner NORTHEAST GASOLINEEUM UNIV