超深大位移港深69×1井钻井液技术  

Drilling fluid technology for deep extended reach well, Gangshen 69X1

作　　者：陈克胜[1] 王金仲[1] 葛旭东[1] 张军民[2] 周树和[2] 靳丰许[2] 

机构地区：[1]大港油田集团石油工程监理中心 [2]大港油田集团滩海工程公司

出　　处：《钻井液与完井液》2001年第3期42-44,共3页Drilling Fluid & Completion Fluid

摘　　要：港深69X1井完钻垂深为4318.14 m,完钻斜深为5464.43 m,井底水平位移3118.04 m,最大井斜46.40°。港深69X1井上部地层成岩性差,造浆严重;下部地层泥页岩层理发育,吸水易剥蚀掉块、坍塌。要求钻井液具有较好的抑制性能、润滑性能、携岩洗井能力和防漏及堵漏功能。该井在井深2300 m以上井段使用聚合物抑制性钻井液体系,抑制上部地层的造浆;井深2300 m以下井段采用硅基防塌钻井液体系,提高钻井液抗温能力,预防泥页岩的垮塌。现场应用表明,该套钻井液体系施工效果较好,保证了钻井作业的顺利进行。Gangshen69X1 of Dagang oilfield is an important exploration well with the longest displacement on land China. It is a well with vertical depth of 1318. 14 m , slant depth of 5464.13 m. horizontal displacement of 3118.04m, maximum hole inclination of 46. 10°. Formation characteristic and casing program require the drilling fluid behave good inhibition, lubrication and strong cutting transportation, leak protection and plugging ability. An inhibitive polymer drilling fluid is used in upper interval. Below 2300m, silicon-based sloughinging prevention fluid is used to increase thermal stability. Field data verified all the advantages of this fluid system.

关 键 词：聚合物钻井液 深井钻井 大角度斜井 地层损害 

分 类 号：TE254[石油与天然气工程—油气井工程] TE245