NIU Chengcheng, XIAO Chao, HAN Yannong, FENG Jiangpeng, ZHANG Haolin, LI Guien. Drilling Fluid Technology for Enhancing Borehole Stability for Complex Reservoirs in the San Jorge Oilfield, Argentina[J]. Petroleum Drilling Techniques, 2016, 44(1): 23-28. DOI: 10.11911/syztjs.201601005
Citation: NIU Chengcheng, XIAO Chao, HAN Yannong, FENG Jiangpeng, ZHANG Haolin, LI Guien. Drilling Fluid Technology for Enhancing Borehole Stability for Complex Reservoirs in the San Jorge Oilfield, Argentina[J]. Petroleum Drilling Techniques, 2016, 44(1): 23-28. DOI: 10.11911/syztjs.201601005

Drilling Fluid Technology for Enhancing Borehole Stability for Complex Reservoirs in the San Jorge Oilfield, Argentina

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  • Received Date: January 27, 2015
  • Revised Date: December 20, 2015
  • In the second section drilling of Argentina San Jorge Oilfield, it is necessary to drill through mudstone and tuff formations. These formations are characterized by extensive micro-fractures. Both montmorillonite and quartz contents are high with strong water-sensitivity. Currently the BIOCAT drilling fluid system adopted often results in wellbore collapse frequently and abandoning 2-4 wells every year. The borehole enlargement rate was over 100% in an unstable hole section in drilled wells. In order to resolve these problems, the impermeable anti-collapsing inhibitive polymer drilling fluids system is developed by optimizing the SRIPE-inhibitors with high anti-collapsing inhibitor instead of BIOCAT. In addition, an inhibitor with addition of impermeable agent SMT3 and sealing materials such as graphite, calcium carbonate, etc. were included. Laboratory experimental results showed that the optimized drilling fluid system has stronger inhibitive and anti-collapse capacities than BIOCAT system. The swelling increment decreases by over 10% and recovery rate increases by 60%-70%. In addition, it can efficiently prolong the borehole wall stable period by 100%. Good results have been achieved in applications of the system in 24 wells. Compared with adjacent wells with application of BIOCAT drilling fluid system, wellbore collapses decreased significantly and borehole diameter enlargement in unstable hole section in wells decreased from 100% to 10%, drilling time decreased by 15% and drilling cost decreased by 10%. Results suggest that the impermeable anti-collapsing inhibitive polymer drilling fluid system application in Argentina’s San Jorge Oilfield can effectively solve wellbore instability problems.
  • [1]
    CHESSER B G.Design considerations for an inhibitive,stable water-based mud system[R].SPE 14757,1987.
    [2]
    马超,赵林,宋元森.聚铝胺盐防塌钻井液研究与应用[J].石油钻探技术,2014,42(1):55-60. MA Chao,ZHAO Lin,SONG Yuansen.Research and application of anti-sloughing drilling fluid of poly aluminum-amine salt[J].Petroleum Drilling Techniques,2014,42(1):55-60.
    [3]
    王沫,杜欢,伊尔齐木,等.顺南井区优快钻井技术[J].石油钻探技术,2015,43(3):50-54. WANG Mo,DU Huan,EERQM,et al.Optimal and fast drilling technology for Shunnan Block[J].Petroleum drilling Techniques,2015,43(3):50-54.
    [4]
    刘榆,卿鹏程.沈北地区新型防塌钻井液技术[J].石油钻探技术,2005,33(3):29-31. LIU Yu,QING Pengcheng.The novel anti-caving drilling fluid in the Shenbei Area[J].Petroleum Drilling Techniques,2005,33(3):29-31.
    [5]
    FJR E,HOLT R M,NES O M,et al.Mud chemistry effects on time-delayed borehole stability problems in shales[R].SPE 78163,2002.
    [6]
    邱春阳,秦涛,司贤群,等.准中征沙村区块定向防塌钻井液技术[J].断块油气田,2015,22(5):664-667. QIU Chunyang,QIN Tao,SI Xianqun,et al.Anti-caving drilling fluid for directional well in Zhengshacun Oilfield,middle Junggar Basin[J].Fault-Block Oil Gas Field,2015,22(5):664-667.
    [7]
    张凤英,鄢捷年,周劲辉,等.苏丹六区低伤害防塌钻井液技术[J].石油钻探技术,2010,38(2):43-46. ZHANG Fengying,YAN Jienian,ZHOU Jinhui,et al.An anti-sloughing and low-damage drilling fluid used in Block 6,Sudan[J].Petroleum Drilling Techniques,2010,38(2):43-46.
    [8]
    张金龙.胜利海区深部地层防塌钻井液技术[J].钻井液与完井液,2013,30(5):40-42. ZHANG Jinlong.Anti-sloughing drilling fluid technology of deep formation in offshore of Shengli Oilfield[J].Drilling Fluid Completion Fluid,2013,30(5):40-42.
    [9]
    徐加放,邱正松,王卫国,等.KCC-TH强抑制性防塌钻井液的研制及应用[J].石油钻探技术,2006,34(1):36-38. XU Jiafang,QIU Zhengsong,WANG Weiguo,et al.Study and application of a strong inhibitive drilling fluid KCC-TH[J].Petroleum Drilling Techniques,2006,34(1):36-38.
    [10]
    李方,余越琳,蒲晓林,等.新型水基防塌钻井液室内研究[J].钻井液与完井液,2013,30(3):1-3. LI Fang,YU Yuelin,PU Xiaolin,et al.Research on novel anti-caving drilling fluid system[J].Drilling Fluid Completion Fluid,2013,30(3):1-3.
    [11]
    蔡记华,乌效鸣,朱永宜,等.松科1井(主井)防塌钻井液技术[J].石油钻探技术,2008,36(5):54-57. CAI Jihua,WU Xiaoming,ZHU Yongyi,et al.Anti-sloughing drilling fluid in main wellbore of SLCORE-1 Well[J].Petroleum Drilling Techniques,2008,36(5):54-57.
    [12]
    许遵见,杜安,文兴贵,等.非渗透抗压钻井液处理剂KSY的研究与应用[J].断块油气田,2006,13(1):56-59. XU Zunjian,DU An,WEN Xinggui,et al.Study and application of non-invasion and pressure-resistant drilling fluid additives KSY[J].Fault-Block Oil Gas Field,2006,13(1):56-59.
    [13]
    ALTUN G,OSGOUEI A E,OZYURTKAN M H.An alternate mud proposal to minimise borehole instability:International Petroleum Technology Conference,Kuala Lumpur,Malaysia,December 10-12,2014[C].
    [14]
    ZHANG J,STANDIFIRD W B.Impermeable drilling mud to strengthen wellbore stability[R].ARMA-07-210,2007.
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