Low Damage Low Density Drilling Fluid Used in Songnan Gas Filed for Lost Circulation Control while Drilling
-
摘要: 松南气田火成岩储层地层压力低,且裂缝发育,在钻井过程中极易发生井漏,降低钻井时效。针对该地区的地质特征与钻井要求,以钻井液的动速比为指标,优选了疏水缔合型两性离子聚合物PAADDC作为携岩剂;通过滤失造壁性能评价实验和压力穿透测试,优选了PB-1和不同粒径的超细碳酸钙构成的钻井液封堵防塌剂;通过堵漏评价实验,优选了中空弹性橡胶、碳酸钙颗粒和中空弹性微珠作为主要随钻堵漏材料。在此基础上研制了低密度低伤害随钻堵漏钻井液体系,并对其性能进行了综合评价。实验结果表明,该钻井液具有良好的流变性和封堵防塌性,防漏堵漏效果良好,酸化解堵效果显著。在腰平16井的现场应用中,钻井液性能稳定,成功解决了火成岩低压储层井漏影响钻井时效问题,满足了现场钻井施工和储层保护的需要。Abstract: The igneous rock reservoir in Songnan gas field has low formation pressures and is rich in formation fractures. Time efficiency of drilling operation has been low in this area because of mud losses frequently encountered during drilling. To address this problem, a low solids low damage low density drilling fluid with the ability of controlling mud losses while drilling was formulated based on laboratory experiment. To improve the cuttings carrying capacity of the drilling fluid, a hydrophobic associative amphoteric polymer PAADDC was selected based on the geology and drilling requirement of the gas field. By evaluating the water loss and wall building capacity, as well as pressure penetration property of the drilling fluid, a plugging additive mixed with PB-1 and ultra-fine calcium carbonate of different particle sizes was prepared. A lost circulation material used while drilling was formulated with hollow elastic rubber beads, calcium carbonate particles and hollow elastic micro beads. Evaluation of the drilling fluid shows that this drilling fluid has good rheology, plugging capacity, anti-sloughing ability and capabilities of controlling and preventing mud losses. Use of calcium carbonate makes it easy to minimize formation damage by acidizing job. When used in drilling the Well Yaoping-16, the mud showed stable properties. Mud losses in drilling the low-pressure igneous rocks, which negatively affected drilling time efficiency previously, was successfully resolved. Requirements of drilling operations and reservoir protection were satisfied with this drilling fluid.
-
[1] 李洪波, 张敏, 陈小慧. 松辽盆地南部梨树断陷混源油定量识别模式[J]. 石油天然气学报, 2012, 34(11):1-7.LI Hongbo, ZHANG Min, CHEN Xiaohui.Quantitative identification model of mixed source oil in lishu fault depression in southern songliao basin[J].Journal of Oil and Gas Technology, 2012, 34(11):1-7. [2] 李明, 赵民, 刘晓, 等. 松辽盆地南部长岭凹陷油气富集区分布特征[J]. 石油勘探与开发, 2009, 36(4):413-417.LI Ming, ZHAO Min, LIU Xiao, et al. Distribution of petroleum enrich areas, changling sag, southern songliao basin[J].Petroleum Exploration and Development, 2009, 36(4):413-417. [3] 刘彦学. 松南气田火成岩储层低伤害钻井液体系研究[J]. 钻采工艺, 2011, 34(6):89-92.LIU Yanxue.Study on low damage drilling fluid for igneous rock reservoir in songnan oil-gas field[J].Drilling & Production Technology, 2011, 34(6):89-92. [4] 修安鹏, 车燕, 许世红, 等. 长岭坳陷腰英台青山口组油气成藏主控因素分析[J]. 海洋石油,2012,32(1):49-52.XIU Anpeng, CHE Yan, XU Shihong, et al. Analysis of major control factors of qingshankou formation in yaoyingtai oilfield in changling depression[J].Offshore Oil, 2012, 32(1):49-52. [5] 王德喜, 曾文冲, 汪志锋. 松南气田火成岩储层流体性质的识别[J]. 西南石油大学学报(自然科学版), 2009, 31(6):15-20. WANG Dexi,ZENG Wenchong,WANG Zhifeng.Several recognition on polyamines and "Polyamine" drilling fluid[J].Journal of Southwest University(Science & Technology Edition),2009,31(6):15-20. [6] 刘彦学, 吴亚红, 刘立宏, 等. 松南深层人工裂缝特征及压裂对策研究[J]. 石油天然气学报,2012,34(8), 143-146.LIU Yanxue, WU Yahong, LIU Lihong, et al. Artificial fracture characteristics and fracturing countermeasures in Songnan deep zones[J].Science Technology and Engineering, 2015, 15(3), 208-211. [7] GB/T 16783-1997, 水基钻井液现场测试程序[S]. GB/T 16783-1997, Water-based drilling fluid field test procedure[S]. [8] 闫丰明, 康毅力, 孙凯, 等. 缝洞型碳酸盐岩储层暂堵性堵漏配方研究[J]. 石油钻探技术, 2012, 40(1):47-51.YAN Fengming, KANG Yili, SUN Kai, et al.The temporary sealing formula for fractured-vuggy carbonate reservoir[J].Petroleum Drilling Techniques,2012,40(1):47-51. [9] 王业众, 康毅力, 李航, 等. 裂缝性致密砂岩气层暂堵性堵漏钻井液技术[J]. 天然气工业, 2011, 31(3):63-65.WANG Yezhong, KANG Yili, LI Hang, et al. Drilling fluids for temporary sealing in fractured tight sandstone gas reservoirs[J].Natural Gas Industry, 2011, 31(3):63-65. [10] 舒曼, 赵明琨, 许明标. 涪陵页岩气田油基钻井液随钻堵漏技术[J]. 石油钻探技术, 2017, 45(3):21-26.SHU Man, ZHAO Mingkun, XU Mingbiao. Plugging while drilling technology using oil-based drilling fluid in Fuling Shale Gas Field[J].Petroleum Drilling Techniques, 2017, 45(3):21-26.
点击查看大图
计量
- 文章访问数: 515
- HTML全文浏览量: 145
- PDF下载量: 244
- 被引次数: 0