油气藏评价与开发
油氣藏評價與開髮
유기장평개여개발
2014年
1期
66-68,78
,共4页
致密砂岩气%低伤害增效压裂液体系%压裂参数优化%现场施工
緻密砂巖氣%低傷害增效壓裂液體繫%壓裂參數優化%現場施工
치밀사암기%저상해증효압렬액체계%압렬삼수우화%현장시공
tight sandstone gas%low damage and efficient fracturing fluid system%fracturing parameters optimization%field con-struction
针对鄂尔多斯盆地东南缘延川南煤层气工区致密砂岩储层的地质状况，优选出低伤害、携砂能力强、高效返排特性的压裂液体系，配以纤维加砂、液氮伴注和压后返排控制技术，成功完成了一口致密砂岩井的现场压裂施工。施工用液221.7 m3，加入石英砂30 m3，纤维220 kg，伴注液氮16 m3，压裂后测试无阻流量达到8457 m3/d，初步实现了鄂尔多斯盆地边缘浅层致密砂岩压裂技术的突破，对于合理开发此类储层具有重要的指导意义。
針對鄂爾多斯盆地東南緣延川南煤層氣工區緻密砂巖儲層的地質狀況，優選齣低傷害、攜砂能力彊、高效返排特性的壓裂液體繫，配以纖維加砂、液氮伴註和壓後返排控製技術，成功完成瞭一口緻密砂巖井的現場壓裂施工。施工用液221.7 m3，加入石英砂30 m3，纖維220 kg，伴註液氮16 m3，壓裂後測試無阻流量達到8457 m3/d，初步實現瞭鄂爾多斯盆地邊緣淺層緻密砂巖壓裂技術的突破，對于閤理開髮此類儲層具有重要的指導意義。
침대악이다사분지동남연연천남매층기공구치밀사암저층적지질상황，우선출저상해、휴사능력강、고효반배특성적압렬액체계，배이섬유가사、액담반주화압후반배공제기술，성공완성료일구치밀사암정적현장압렬시공。시공용액221.7 m3，가입석영사30 m3，섬유220 kg，반주액담16 m3，압렬후측시무조류량체도8457 m3/d，초보실현료악이다사분지변연천층치밀사암압렬기술적돌파，대우합리개발차류저층구유중요적지도의의。
Aimming at tight sandstone reservoir in CBM reservoir of South Yanchuan region in Ordos basin, a new fracture fluid sys-tem which had the properties of low reservoir damage, strong carrying capacity and fast flowback was optimised. Equipped with tech-nologies of gravel input with fibre, accompanied liquid nitrogen injection and flowback controlling after fracturing, a tight sandstone well succesfully completed fracturing in the field. The total construction liquid is 221.7 m3, quartz sand is 30 m3, fiber is 220 kg, liquid nitrogen injection is 16 m3. Open flow potential (OFP) reaches 8 457 m3/d, initially realizing the breakthrough of tight sandstone frac-turing technology in marginal shallow of Ordos basin, which has important guiding significance for rational exploring such reservoirs.
