Fracturing method suitable for comprehensively controlling fracture height of loose sandstone

• Main Authors: ZHANG YUNPENG, LAN XITANG, CHEN XU, FU YANGYANG, ZOU JIAN, ZHANG LIPING, DAI LEIYANG, JING JIYUN, GAO SHANG, LI QIAN, WANG ZIQUAN
• Format: Patent
• Language: Chinese; English
• Published: 13.10.2023
• 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 relates to a fracture height comprehensive control fracturing method suitable for loose sandstone, which comprises the following steps of: selecting at least two of a degradation rate index, a particle size value index, a settling velocity index and a filtrate loss reduction performance index to evaluate a temporary plugging filtrate loss reducer so as to obtain the temporary plugging filtrate loss reducer meeting the fracturing requirement of a loose sandstone oil reservoir; geological factors and engineering factors are considered, and construction parameters of the use amount of the shielding agent and the floating/sinking speed of the shielding agent are optimized; and performing fracturing construction by using the evaluated construction parameters of the temporary plugging filtrate reducer, the use amount of the shielding agent and the floating/sinking speed of the shielding agent. According to the method, crack initiation of the loose sandstone reservoir can be effectively achieved, meanw