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Rigid plugging material quantitative evaluation method

A rigid leakage plugging and quantitative evaluation technology, applied in instruments, systems based on fuzzy logic, electrical and digital data processing, etc., can solve problems such as large amount of calculation, difficult construction of judgment matrix, and complicated consistency check, etc., and achieve a small amount of calculation. , the effect of low degree of subjective influence and easy to test

Pending Publication Date: 2022-02-15
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

However, this method has the difficulty of checking whether the comparison judgment matrix has consistency, and the complexity of modifying the comparison judgment matrix. There are problems such as difficulty in constructing the judgment matrix, complex consistency check, and large amount of calculation.

Method used

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  • Rigid plugging material quantitative evaluation method
  • Rigid plugging material quantitative evaluation method
  • Rigid plugging material quantitative evaluation method

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Embodiment

[0030] The invention provides a method for quantitative evaluation of rigid leakage plugging materials, comprising the following steps:

[0031] Step 1: Obtain the characteristic parameters of the rigid leakage plugging material. The characteristic parameters include: particle size distribution, roundness, flatness, compression resistance, acid resistance, temperature resistance, friction coefficient,

[0032] For the acquisition of the above parameters, the compressive capacity is evaluated based on the breakage rate of single-layer rigid plugging materials under the condition of 30MPa. The lower the breakage rate, the stronger the compressive capacity, and the higher the score, the higher the breakage rate , indicating that the weaker the ability to withstand stress, the lower the score.

[0033] The acid resistance of the rigid plugging material is evaluated based on its acid solubility rate under standard soil acid. The smaller the acid solubility rate, the stronger the ac...

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Abstract

The invention provides a rigid plugging material quantitative evaluation method, which comprises the following steps: 1, acquiring characteristic parameters of a rigid leaking stoppage material, including particle size distribution, roundness, flatness, compression resistance, acid resistance, temperature resistance and friction coefficient; 2, carrying out importance sorting on the characteristic parameters obtained in the step 1; 3, calculating a weight coefficient of each characteristic parameter by using a fuzzy analytic hierarchy process; 4, performing quantitative processing on the characteristic parameters of the rigid plugging material obtained in the step 1 to obtain score values of different characteristic parameters of the rigid plugging material; and 5, calculating a final comprehensive score of the rigid plugging material according to the step 3 and the step 4, wherein the material with the highest score is the rigid plugging material most suitable for the actual demand of the well site. The method is easy and convenient to operate and small in calculated amount, qualitative analysis of the rigid plugging material is converted into quantitative evaluation and optimization, the optimization process of the site plugging material is facilitated, and a scientific and reasonable theoretical basis is provided for site drilling plugging material selection.

Description

technical field [0001] The invention belongs to the field of material evaluation, in particular to a quantitative evaluation method for rigid leakage plugging materials. Background technique [0002] Lost circulation is one of the most complex and challenging engineering technical problems in oil and gas engineering, which will lead to various engineering problems and bring great difficulties to the exploration and development of oil and gas resources. High temperature, high pressure, high geostress, and fracture development in deep fractured reservoirs increase the risk of lost circulation and the difficulty of control. Plugging loss channels with plugging materials is one of the main ways to control fluid loss in fractured formations, and the key is to form a fracture plugging layer with stable structure and high pressure bearing capacity. The fracture plugging layer is generally a multi-component particle system composed of rigid plugging materials, elastic plugging mate...

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Application Information

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IPC IPC(8): G06F30/27G06N7/02G06F119/14
CPCG06F30/27G06N7/02G06F2119/14
Inventor 许成元郭昆康毅力陈涛王瑞管悦灵丁明岩
Owner SOUTHWEST PETROLEUM UNIV