Method for screening clay stabilizers for coal bed gas and coal bed gas exploitation method

• Main Authors: WANG XIYOU, LUO KAI, HE MANJIANG
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2018
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PHYSICS; TESTING

The invention provides a method for screening clay stabilizers for coal bed gas and a coal bed gas exploitation method and relates to the technical field of unconventional coal bed gas exploitation. The method for screening the clay stabilizers for the coal bed gas comprises steps as follows: n clay stabilizers are selected, anti-swelling rate of each clay stabilizer for sodium bentonite is measured, and n is larger than or equal to 2; the clay stabilizers with the anti-swelling rate for sodium bentonite higher than a first preset value are screened, and the anti-swelling rate of each screenedclay stabilizer for pulverized coal is measured; the clay stabilizer with the highest anti-swelling rate for target pulverized coal is screened out and taken as the target clay stabilizer. The methodis simple and convenient to operate, a result is accurate and has few errors, and the method can be applied to the field of coal bed gas exploitation. According to the coal bed gas exploitation method, the optimal clay stabil