南堡1-3人工岛钻井液技术  

Drilling Fluid System Used in Nanpu1-3 Artificial Island

作　　者：朱宽亮[1] 卢淑芹[1] 邢韦亮[1] 徐同台[2] 郝宏忠 

机构地区：[1]中国石油冀东油田公司钻采工艺研究院,河北唐山063004 [2]中国石油天然气集团公司老干部局,北京102200 [3]中国石油冀东油田公司勘探开发建设项目部,河北唐山063200

出　　处：《石油钻探技术》2010年第3期54-58,共5页Petroleum Drilling Techniques

基　　金：国家科技重大专项"渤海湾盆地南堡凹陷勘探开发示范工程"(编号:2008ZX05050)资助

摘　　要：南堡1-3人工岛是冀东南堡滩海地区的一座固定式海上平台,主要勘探开发南堡1-5区块,钻井过程中易发生井漏和井壁失稳,导致储层受到污染。在分析南堡1-5区东1段储层各油组储层特性、伤害因素及对储层上覆玄武岩地层特性基础上,结合成膜封堵理论,优选出了具有强抑制性和强封堵性的KCl成膜封堵低侵入钻井液。室内试验表明,KCl成膜封堵低侵入钻井液常规性能良好,抑制性和封堵性强,油层保护效果好。现场应用表明,南堡1-5区块使用KCl成膜封堵低侵入钻井液后,钻井液密度明显降低,所钻井均能顺利完钻,且一次成功自喷投产,证实通过提高钻井液的抑制性和封堵性,可以达到稳定玄武岩地层井壁、解决井漏和高效保护储层的目的。Nanpu1-3 artificial island,a fixed offshore platform in Jidong Nanpu Oilfield,is used to explore and develop Nanpu1-5 block.The loss circulation and well collapse occurred during drilling cause the formation damage.Based on the analysis of the formation characteristics Nanpu1-5 block,formation damage factors,and the upper formation characteristics,along with the plugging and filming theory,a high-performance KCl film forming and sealing with low invasion drilling fluid is developed.Experimental study shows that it has good performance,inhibition capability and formation-protection result.Application in 42 wells indicates that the density of drilling fluid decreases obviously.The drilled well can be put into primary production successfully.It shows that through improving drilling fluid＇s inhibition and plugging,wellbore stability and formation protection in upper formation can be achieved.

关 键 词：钻井液 钻井液性能 储集层特征 防止地层损害 南堡1-3人工岛 

分 类 号：TE254.6[石油与天然气工程—油气井工程]