Comprehensive evaluation method for laying effect of proppant in fracturing crack
A comprehensive evaluation and proppant technology, applied in the field of oil and gas field development, can solve the problems of crossed, contradictory and one-sided evaluation results
Pending Publication Date: 2021-10-29
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
When a single parameter is used to evaluate proppant laying in fractures, the evaluation results are often too one-sided; while when a multi-parameter evaluation system is used for the same experiment, the evaluation results often overlap, contradict each other, and are not unique.
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[0040] According to the content description of the invention, taking the proppant laying effect in the flat slit experiment as the evaluation target as an example, the present invention will be further described in conjunction with the accompanying drawings.
[0041] The method for comprehensively evaluating the effect of proppant laying in fractures according to the present invention can quantitatively characterize the effect of proppant laying in fractures, and provide reference for optimization of fracturing construction design. It mainly includes the following steps:
[0042] Step S10, using the flat slit sand delivery device to simulate the proppant laying form under different experimental parameters, and obtain the evaluation parameters of the proppant laying effect;
[0043] Using the device described in the patent No. CN201910898699.0, titled "A Real-Time Sand Ratio-Variable Fracturing Propant Delivery Simulation Method and Experimental Device", after connecting the pi...
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The invention discloses a comprehensive evaluation method for the laying effect of a proppant in a fracturing crack. The method comprises the following steps: simulating the laying form of the proppant under different experimental parameters through a flat plate slit sand conveying device, and obtaining the evaluation parameters of the laying effect of the proppant; establishing a hierarchical structure model and a judgment matrix A (I); introducing a transfer matrix D to obtain a consistency optimization judgment matrix A (II); calculating a weight vector omega and carrying out consistency check; establishing a factor set U and an evaluation set V; establishing a paving effect evaluation fuzzy matrix A (III); and establishing a comprehensive evaluation model for the paving effect of the in-seam proppant, and comprehensively evaluating the paving effect of the in-seam proppant under the condition of a flat plate slit sand conveying experiment. The proppant laying effect comprehensive evaluation model is constructed based on the improved analytic hierarchy process, the proppant laying effect in the slab slit sand transportation experiment can be quantitatively represented, and a certain reference is provided for proppant material optimization and construction parameter optimization.
Description
technical field [0001] The invention relates to a method for comprehensively evaluating the proppant laying effect in a fracturing fracture, and relates to the technical field of oil and gas field development. Background technique [0002] Hydraulic fracturing technology is a key technical measure to realize conventional oil and gas stimulation and unconventional oil and gas commercial development. The fracture network formed by fracturing is a high-speed channel for oil and gas to seep from the formation to the wellbore. The effect of hydraulic fracturing largely depends on whether the fractures are effectively filled. Therefore, it is particularly important to study proppant transport in fracturing fractures. Visual simulation of proppant transportation in fractures by using flat slot sand delivery device is an important way to study proppant laying rules in fractures. There are two parameter evaluation systems for the evaluation of the proppant placement form in the fl...
Claims
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Login to View More IPC IPC(8): G06Q10/06G06F30/20G06N7/02
CPCG06Q10/06393G06F30/20G06N7/02
Inventor 李小刚陈浩杨兆中廖梓佳朱静怡杜博迪
Owner SOUTHWEST PETROLEUM UNIV