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玉门油田青西试采区白垩系下沟组油藏岩性特殊，属于陆源碎屑岩占３５．１５％、碳酸盐岩类占３３．８４％、粘土矿物占３１．０１％的特殊储层。储层低渗、低孔，天然裂缝发育，油层中部平均深度 ４２００ｍ，平均温度 １２０℃。针对这种特殊岩性储层，通过薄片鉴定、Ｘ衍射、环境扫描电镜等分析，结合酸蚀导流能力模拟试验，油藏数值模拟及优化设计等研究成果，建立了既不同于纯碳酸盐岩储层的深度酸压，又不同于砂岩储层酸化解堵的组合技术，即“降阻酸深度酸压＋多组分酸闭合酸化”的特殊增产技术方法，优选了适合储层改造的液体体系。通过柳１０２井的现场实践，取得了增产 １０２ｔ／ｄ、增产倍数达 １０倍的显著效果。
The Cretaceous Xiagou Formation reservoir in the Qingxi test area of Yumen Oilfield is of special lithology, belonging to 35.15% of terrigenous clastic rocks, 33.84% of carbonate rocks and 31.01% of clay minerals Reservoir. Reservoir low permeability, low porosity, natural fracture development, the average depth of the central reservoir 4200m, the average temperature of 120 ℃. Aiming at this kind of special lithologic reservoirs, through the research of thin plate identification, X-ray diffraction and environmental scanning electron microscopy, combined with the research results of acid erosion and conductivity, numerical simulation of reservoir and optimization design, The deep acid pressure of salt rock reservoir is different from the combination technology of acidification and plugging of sandstone reservoir, that is, the special stimulation technology of “acid resistance of acid resistance + closed acidification of multi-component acids” Liquid system. Through the field practice of Liu-102 well, the remarkable effect of increasing 102t / d and increasing the yield by 10 times has been achieved.