Method for predicting pressure bearing capacity of leaking stoppage and plugging layer of deep crack leakage stratum

• Main Authors: DENG SONG, LI CHAOWEI, YAN XIAOPENG, HAO HONGDA, WANG JIANGSHUAI
• Format: Patent
• Language: Chinese; English
• Published: 11.04.2023
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses a method for predicting the pressure bearing capacity of a leaking stoppage and plugging layer of a deep crack leakage stratum. The core point of the invention is that the non-uniformity and discreteness of the leaking stoppage and plugging layer of a leaking stoppage crack are fully considered; based on three main control factors, namely the average level of the shear resistance of a main force chain, the number of force chains bearing main external loads and the shear resistance quality, of the pressure bearing capacity of the crack plugging layer, the three main control factors are quantized, and a prediction model of the pressure bearing capacity of the plugging layer is given by means of data fitting. According to the method for predicting the pressure-bearing capacity of the leaking stoppage and plugging layer of the deep crack leakage stratum, the difficulty of data acquisition is simplified; the non-uniformity and discreteness of the leaking stoppage crack plugging layer are fu