伊朗Y油田高温深井防卡钻井液技术  

Drilling Fluid Technology Preventing Drilling Pipe from Sticking for High Temperature Deep Wells of Y Oilfield of Iran

作　　者：郭京华[1,2] 夏柏如[1] 田凤[3] 黄河福 卜海[1] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中石化国际石油勘探开发有限公司,北京100029 [3]中石化中原油田分公司,河南濮阳457001

出　　处：《特种油气藏》2012年第5期135-138,158,共4页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"中东中亚富油气区复杂地层深井钻完井技术"(2008ZX05031-004)

摘　　要：针对伊朗Y油田早期钻井过程中发生的压差卡钻问题,首先运用力学分析的方法,找出钻井液需要改善的性能要求,利用室内实验手段,考察钻井液的抗高温能力和加入润滑剂后的润滑效果,优选出高温深井防卡钻井液的基本配方。其次,提出特殊工况下的润滑防卡技术措施,建立解卡液密度优化计算公式,为解卡液密度选择提供理论基础。现场应用9口井,钻井液性能稳定,基本杜绝卡钻事故,有效提高了钻井时效。In view of the problem of pipe sticking encountered in early drilling of Y Oilfield of Iran,at first,performance requirements of drilling fluids needing to be improved is found by using dynamics analyses,the capacity of enduring high temperature and lubricant effect of drilling fluids after lubricant additives are added are tested by using lab experiments and the basic formula of drilling fluids which can endure high temperature and prevent drilling pipe from sticking is optimized.At second,the measures of lubricating and sticking-preventing technology fit for special conditions are raised in order to strengthen the sticking-preventing effectiveness and optimized formula calculating the density of sticking-releasing fluids is established in order to provide theoretical bases for selecting the density of sticking-releasing fluids.The results of the field application in 9 wells show that the performance of the drilling fluids is stable,no sticking occurs and drilling efficiency is effectively increased.

关 键 词：水基钻井液 高温高压 预防卡钻 封闭液 伊朗Y油田 

分 类 号：TE254[石油与天然气工程—油气井工程]