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针对乾安高温(98℃)裂缝性油藏中存在的高渗透和高滤失问题,研制了适合该类油藏的高温堵剂。在高温条件下研究了配方各组分及其用量对该堵剂成胶时间和成胶强度的影响,筛选出堵剂配方,并考察了堵剂的热稳定性。实验结果表明,该堵剂在高温条件下可形成高强度凝胶具有良好的热稳定性,适合高温裂缝性油藏堵水。
Aiming at the problems of high permeability and high filtration loss in the dry fracturing reservoir with high temperature (98 ℃), a high temperature plugging agent suitable for such reservoirs has been developed. The effects of various components and dosage on the gelling time and the gelling strength of the blocking agent were studied under high temperature conditions. The blocking agent formulation was screened and the thermal stability of the blocking agent was investigated. The experimental results show that the plugging agent can form high strength gel under high temperature, has good thermal stability, and is suitable for plugging water in high temperature fractured reservoirs.