提高复杂井固井质量的钻固一体化技术应用研究  

Integrated Drilling and Cementing Fluid Technique to Improve Cementing Quality in Complex Wells

作　　者：江山红[1] 万绪新[2] 王树永[3] 张浩[4] 王治法[1] 

机构地区：[1]中国石化石油勘探开发研究院德州石油钻井研究所,山东德州253005 [2]胜利石油管理局勘探监理部,山东东营257000 [3]胜利石油管理局黄河钻井总公司,山东东营257013 [4]滇黔桂石油勘探局第一钻探公司,山东临邑251500

出　　处：《石油钻探技术》2006年第5期30-33,共4页Petroleum Drilling Techniques

基　　金：中国石油化工股份有限公司科研攻关项目"钻井液固井液一体工作液技术研究"(编号:P04074)部分研究成果

摘　　要：钻井时钻井液在井壁上形成的泥饼不管有多薄,固井时都会在井壁上形成一个不可固化层,尤其是漏失层段,易导致第二界面的胶结强度达不到预期的效果。钻固一体化工作液技术通过引入复合活性材料,形成可固化泥饼层,固井施工时可以使钻井液的性能转换、潜活性激活,从而提高易漏地层的承压能力,促使井壁附着的泥饼固结,提高地层-泥饼-水泥环的胶结亲和力,有效地解决了传统固井水泥浆与钻井液不相容的问题。该技术在两口井进行了现场试验并获得成功,油层井段固井质量达到了优质标准,有效地提高了第二界面胶结质量,减少和阻止了各种流体的层间窜通。The mud cake formed during drilling can not be solidified during cementing operation regardless of its thinness, which may result in poor Ⅱ interface bonding, especially in thief zones. Through the introduction of active compound materials, Integrated drilling and cementing technique can make solidifiable mud cake form on well wall. During cementing operation, by means of addition of active agents, mud cake can be solidified along with cement slurry, which can effectively solve the incompatible problem between conventional cement slurry and mud and therefore improve the bonding between formation, mud cake and cement sheath. The applications in lost circulation interval and steam drive well show that the technique can effectively improve Ⅱ interface bonding and reduce oil, gas and water migration. As an innovation in drilling engineering, the integrated drilling and cementing technique has displayed its great prospect.

关 键 词：钻固一体化 钻井液 水泥浆 水泥添加剂 胶结强度 

分 类 号：TE254.3[石油与天然气工程—油气井工程] TE256.6