Green reservoir framework reconstruction sand prevention method

• Main Authors: WU MINGMING, CHEN GANG, CHEN XUE, LIANG WEI, JIA WEIXIA, WEI FANG, GAO XUEFENG, WANG YONG, JIANG JING
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• 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 belongs to the technical field of petroleum engineering, and particularly relates to a green reservoir framework reconstruction sand prevention method. The sand prevention method comprises but is not limited to the following steps: collection and pretreatment of stratum sand; the stratum sand and the sand-carrying liquid are mixed to form sand-suspending liquid; pumping the sand suspending liquid into the stratum; pumping the sand consolidation agent into the stratum; displacing fluid is pumped in, cement setting is waited, and the well is opened. According to the method, the stratum sand flushed out by the oil-water well in the same block replaces artificial quartz sand to be filled into an oil well reservoir, then the sand consolidation agent is squeezed into the stratum sand, the stratum sand is consolidated, an artificial well wall is built, a reservoir framework is reconstructed, a sand filtering pipe is replaced to serve as a sand prevention mode of a sand blocking barrier, meanwhile, envi