09-05-2023 дата публикации
Номер: CN116083063A
Автор:
LIU WEI,
ZHANG XIAOPING,
JIA JUN,
CHEN LEI,
LIANG HAIJUN,
FAN FAN,
WANG YONGQIANG,
ZHANG ZHENHUO,
ZHAO LEI,
ZHOU QIANG,
ZHAO JIANZHEN,
JI XIAONING
Принадлежит:
The invention belongs to the technical field of oil-gas exploration and development well drilling production, and particularly provides a delayed expansion plugging system and a preparation method thereof.The delayed expansion plugging system is prepared from, by mass, 10%-30% of delayed expansion particles, 40%-65% of rigid particles, 10%-20% of elastic particles, 1%-2% of organic fiber materials and 10%-20% of ultra-low permeability treating agents, the problem that an expansion plugging agent cannot achieve the dual effects of expansion filling and internal extrusion and compaction of a water-swelling body in a stratum due to the fact that the volume expansion speed is too high after water absorption is solved, the plugging agent has the five-in-one multifunctional synergistic plugging effect of expansion, rigidity, elasticity, tie bar, ultra-low permeability and the like, cracks with the opening degree being 1-5 mm can be plugged at the same time through one set of formula, and the ...
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