摘要
哈萨克斯坦Konys油田是带气顶、边水的层状构造砂岩油田,油田储层非均质性严重,断层发育且油气水关系复杂。K-190S井是Konys油田的一口短半径侧钻水平井,设计、实施的主要目的是运用短半径侧钻技术恢复老井产能,挖掘下达乌尔组油层潜力。K-190S井存在井眼尺寸小、造斜率高、循环压耗高、摩阻扭矩大等钻井难点。根据钻井施工难点,结合地质油藏特点,对井身结构、井眼轨道剖面、钻井参数等进行了优化。优化钻具组合避免井下复杂情况发生;进行轨迹预测研究防止轨迹失控,确保中靶率,使钻头在油层中钻进;优选合适钻井参数和钻进方式以达到井身轨迹的平滑。通过利用井身轨迹控制技术、摩阻扭矩分析技术和安全钻进技术,成功解决了钻井难题,从而大大提高了钻井效率。
Konys Oilfield in Kazakhstan was a laminar structured sandstone oilfield with gas cap and edge water,its heterogeneity was serious,fault zones were developed with complicated relations of oil,gas and water.Well K-190 Swas a sidetracking short radius horizontal well in Konys Oilfield,the main purpose of its design and implementation was to use short radius sidetracking technology to restore the production capacity in the old wells,tap the reservoir potential of Lower Ur Formation.There existed technical problems of small size of slim hole,high built-up rate,high circulating pressure and large friction torque in drilling.In consideration of the problems in well drilling and combined with the geological reservoir characteristics,wellbore structure,borehole trajectory and drilling parameters were optimized.BHA was optimized to avoid downhole complicated downhole conditions.Trajectory prediction was studied to prevent the track out of control,to ensure the drilling rate of target zones and the bit drilling in reservoir.Suitable drilling parameters and drilling methods are optimized to achieve a smooth drilling.By using the well track control technology,the friction torque analysis technology and safety drilling technology,the drilling problems are successfully solved,thus the drilling efficiency is greatly improved.
出处
《长江大学学报（自科版）（中旬）》
CAS
2015年第4期47-51,共5页
Journal of Yangtze University(Nature Science Edition)
关键词
Konys油田
短半径
小井眼
水平井
轨迹控制
钻井技术
Kewords:KonsOilfield
shortradius
slimhole
horizontalwell
traectorcontrol
drillintechnolo
