摘要
为降低高闭合应力储层暂堵压裂施工压力高、砂堵风险大等难题,同时为进一步提高非常规致密油气单井的产量,研究形成一种新型暂堵剂ZD-150。该暂堵剂抗温性能可达到120℃,48 h油溶率大于95%,24 h酸溶率小于5%,0.2%瓜胶携带15%的暂堵剂悬浮稳定时间可达12 h,且具有抗压性高和暂堵效果好的特点。现场10多井次应用表明:ZD-150通过与粉陶结合,可将施工的转向效果提高1.5倍,改造后效果提高2.1倍,为非常规储层体积压裂模型下提高裂缝复杂程度提供了新型材料。
A new temporary plugging agent,ZD-150,was developed to overcome the high operational pressure and high risk of sand plugging in fracturing job in high closure stress reservoirs.ZD-150 can stand temperatures to 120 ℃,and has oil solubility of greater than 95%in 48 h,and acid solubility of less than 5%in 24 h.Suspension of 0.2%guar gum solution containing 15%ZD-150 remains stable for 12 h,with no sedimentation.ZD-150 has high compressive strength and good temporary plugging performance.The application of ZD-150 in 10 wells showed that,by combining with ceramic powder,the turnaround efficiency of the operation was enhanced by 1.5 times,and even by 2.1 times after further modification.ZD-150 is a new additive for use in increasing the complexity of fractures in SRV fracturing.
出处
《钻井液与完井液》
CAS
北大核心
2015年第1期87-89,104,共3页
Drilling Fluid & Completion Fluid
基金
中石油重大专项"华北油田上产稳产800万吨关键技术研究"(2014E-35)
关键词
体积改造
暂堵剂
致密油气藏
裂缝网络
压裂液
增产措施
Volumetric modification
Temporary plugging agent
Tight oil and gas reservoir
Fracture network
Fracturing fluid
Stimulation measure
