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Numerical analysis method applied to leaking and channeling mechanism and prevention and control method of injection fluid

A numerical analysis and mechanism technology, which can be used in material inspection products, soil material testing, etc., to solve problems such as mudstone water absorption and research gaps in mudstone layer leakage and channeling.

Inactive Publication Date: 2015-02-11
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a numerical analysis method for injection fluid leakage, channeling mechanism and prevention and control methods, aiming to solve the problem of mudstone water absorption and mudstone layer leakage in water injection development in low-permeability oilfield development research at home and abroad and channeling research is almost blank

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  • Numerical analysis method applied to leaking and channeling mechanism and prevention and control method of injection fluid
  • Numerical analysis method applied to leaking and channeling mechanism and prevention and control method of injection fluid
  • Numerical analysis method applied to leaking and channeling mechanism and prevention and control method of injection fluid

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Embodiment 1

[0083] All experiments in the embodiments of the present invention are carried out in the State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering (Southwest Petroleum University), and the instruments and equipment used include: rock triaxial testing machine, rock rheological testing machine, high temperature and high pressure rock multi-parameter Measuring instrument, etc.

[0084] There are two batches of rock cores used in the embodiments of the present invention. The first batch of cores comes from 11 mudstone and argillaceous sandstone cores of Mao 11 and Mao 111 in Toutai Oilfield, all of which are standard cores; 10 mudstone and sandstone cores come from Well Sheng 38-1 and Well Shu 14 in Yushulin Oilfield . Among the 11 cores from Toutai Oilfield in the first sample, four cores were used to test the stress sensitivity, namely 1#, 3#, 4# and 10# cores, and the rest 2#, 5#, 6#, 7#, 8#, 9#, 11# cores are used to test the mechanical parameters of...

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Abstract

The invention discloses a numerical analysis method applied to a leaking and channeling mechanism and a prevention and control method of an injection fluid. The method is used for carrying out research based on the fluid-solid coupling theory by virtue of a method with combination of indoor test, numerical calculation and field detection. By virtue of the method, typical mudstone is selected for carrying out indoor test under different water ratios and building an inversion model of stress and deformation of a point-changeable stratum of an inversion sleeve of deformation data of a sleeve. On account of a typical injection-production scheme, the accurate positions of leakage, interzone and flowing along fault are judged and optimized by comparing the numerical simulation and the field detection; finally, a reasonable injection-production scheme and a reasonable measure for preventing serious loss of injection water are provided; and the method has important application values of improving the injection-production effect of the oil field and improving the final recovery rate and the whole development level of the oil field.

Description

technical field [0001] The invention belongs to the field of oilfield development, and in particular relates to a numerical analysis method for injection fluid leakage, channeling mechanism and prevention and control method. Background technique [0002] High-pressure water injection is an effective measure to increase production in low-permeability oilfields. For waterflood development oilfields, good waterflooding effect is the basis for stable oilfield production. The difficulty for low permeability reservoirs is that the loss of injected water along fractures, channeling or leakage will have adverse effects on effective development, resulting in unsatisfactory water injection development results in low permeability reservoirs, and formation energy cannot be effectively obtained. supplement. [0003] In the research of low-permeability oilfield development at home and abroad, relevant research has been carried out on the problems existing in multi-layer oil and gas rese...

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Application Information

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IPC IPC(8): G01N33/24
Inventor 刘建军纪佑军宋睿裴桂红
Owner SOUTHWEST PETROLEUM UNIV
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