Fracturing technology of foam fracturing fluid capable of independently generating heat and gas

• Main Authors: KANG JIA, MAO XINYU, LIU PINGLI, HAN PEIHONG, DAI JINXIN, LI JUN, LI NIANYIN, LUO ZHIFENG, GUO QIAN
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2020
• Subjects: ADHESIVES; CHEMISTRY; DYES; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PAINTS; POLISHES

The invention discloses a fracturing technology of foam fracturing fluid capable of independently generating heat and gas. The fracturing technology comprises the following steps that S1, the fracturing fluid and a propping agent are selected, and the foam half-life period of the fracturing fluid is measured, wherein the fracturing fluid is prepared from a thickening agent, a cross-linking agent,heat generating agents, a heat generating catalyst, a breaking aid and a gel breaker, the heat generating agents comprise the heat generating agent A and the heat generating agent B, and the heat generating agent A and the heat generating agent B can be subjected to a heat and gas generating reaction under the action of the heat generating catalyst; S2, a fracturing fluid system is prepared; S3, sand fracturing construction is conducted; and S4, well shut-in is conducted according to the foam half-life period, and flowback is conducted after well shut-in is completed. According to the fracturing technology, the permea