泌深1井大井眼钻井液技术  

Large Hole Drilling Fluid Technology for Well Bishen-1

作　　者：薛建国[1] 何振奎[2] 胡金鹏[3] 孙中伟[2] 李剑[3] 杨金山[3] 李忠宏[3] 

机构地区：[1]中石化河南石油勘探局 [2]中石化河南油田分公司工程院 [3]中石化河南石油勘探局钻井公司

出　　处：《钻井液与完井液》2008年第5期35-37,共3页Drilling Fluid & Completion Fluid

摘　　要：泌深1井是1口重点探井,井深为6 000 m。该井二开(406.4 mm)、三开(311.2 mm)井眼尺寸大,悬浮携带岩屑困难,而且该井段大仓房组、玉皇顶组玉一段地层中大段红色泥岩造浆性极强,井壁易失稳;地温梯度高,钻井液必须具有抗180℃高温的能力。通过室内实验优选出了聚合物和聚磺钻井液配方。优选出的钻井液流变性、润滑性和抗温能力好,抑制性和携带悬浮岩屑能力强,滤失量低。钻井过程中没有发生井下复杂情况,起下钻畅通,电测、下套管顺利,表明该套钻井液满足了该井大井眼段钻井要求。Well Bishen-1 is a key exploration well with a depth of 6,00 0m.Hole diameters of the second interval(406.4 mm) and the third interval(311.2 mm) were comparatively large and the carrying capacity of the mud used in the two intervals should be high enough to suspend the drilled cuttings.Furthermore,the big hole penetrated the red shale formations(Dacangfang and Yuhuangding) in which borehole instability and high formation temperatures(as high as 180 ℃) made drilling difficult.A polymer drilling fluid treated with sulfonated additives was formulated through laboratory studies and the mud formulation was optimized in those properties such as rheology,lubricity,high temperature stability,inhibitive capacity,carrying capacity,and filtration property.Filed application showed that this drilling fluid was successful in drilling these two intervals with large diameters.

关 键 词：聚合物钻井液 聚磺钻井液 井眼稳定 井眼净化 抗高温 大井眼 泌深1井 

分 类 号：TE254.3[石油与天然气工程—油气井工程]