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针对新疆小拐油田裂缝-孔隙型储层特点,开发研制了一种新型的兼具防漏堵漏及油层保护功能的JQD处理剂。该处理剂具有较好的油溶率、酸溶率,与现有钻井完井液体系配伍性良好,加工粒径可调,对1—4mm的裂缝堵漏效果良好。动态损害实验表明,JQD体系的岩心渗透率恢复值不小于80％。现场试验三口表明,JQD与钻井液配伍性良好,防漏堵漏效果显著,性能调整及维护方便,起下钻及电测顺利。三口井投产后,两口井产量分别为30和28t/d,一口井产气量为1.1×10~4m~3/d,说明储层得到了有效的保护,实现了“堵得住、解得开”的目标。
Aiming at the characteristics of fractured-pore reservoirs in Xiaoguai Oilfield in Xinjiang, a new type of JQD treating agent with both leakage prevention and plugging and reservoir protection has been developed. The treatment agent has better oil-solubility and acid-solubility, has good compatibility with the existing drilling and completion fluid system, has adjustable processing grain size and good plugging effect on cracks of 1-4 mm. Dynamic damage experiments show that the recovery value of core permeability of JQD system is not less than 80%. The field test of the three shows that JQD has good compatibility with the drilling fluid, has significant leakage prevention and plugging effects, is easy to adjust and maintain, and runs smoothly and smoothly. After the three wells were put into operation, the output of the two wells was 30 and 28t / d, respectively, and the gas production in a well was 1.1 × 10 ~ 4m 3 / d, indicating that the reservoir has been effectively protected and “blocked, ”The goal.