深水表层固井硅酸盐水泥浆体系研究  

Research on G-Class Portland Cementing Slurry in Surface Casing in Deep Water

作　　者：王晓亮[1] 许明标[1] 王清顺[2] 林平[1] 王浪 

机构地区：[1]长江大学石油工程学院,湖北荆州434023 [2]中海油田服务股份有限公司,北京101149 [3]中国石油渤海钻探工程有限公司第二固井公司,天津大港300280

出　　处：《石油钻探技术》2010年第6期11-14,共4页Petroleum Drilling Techniques

基　　金：国家高技术研究发展计划("863"计划)项目"深水表层钻井关键技术及装备研究"(编号:2007AA09A103)部分研究内容

摘　　要：针对海洋深水表层套管固井作业,介绍了一种密度可调(1.20～1.80 kg/L)的低温低密度G级硅酸盐水泥浆体系。对低温低密度G级硅酸盐水泥浆体系的设计原理与水泥浆组分以及不同密度水泥浆配方进行了详细的论述,并对该水泥浆体系在深水环境下的性能进行了评价。结果表明,低温低密度G级硅酸盐水泥浆体系在低温环境下具有较高早期强度、低失水量以及良好的流变性和稠化性能,其中密度为1.20 kg/L的水泥浆在3℃温度下的稠化时间≤560 min,稠化过渡时间≤60 min,API失水≤70 mL,水泥石在5℃温度下养护24 h后的抗压强度≥3.5 MPa。这表明低密度G级硅酸盐水泥浆体系具有良好的低温性能,能够满足海洋深水表层套管固井作业要求。This article introduced G-class Portland cement system with adjustable density（1.2～1.8 g/cm3）and low temperature and low density considering the cementing task in surface casing in deep water.After analysis it showed that G-class Portland cementing slurry system had high early strength,low fluid loss,good rheological and good thickening properties.The thickening time was less than 560 minutes;the thickening transition time was less than 60 minutes,and the fluid loss was less than 70 mL for cement slurry with density of 1.20 g/cm3 at 3 ℃.The strength of cementing slurry was higher than 3.5 MPa after 24 h curing at 5 ℃.All these show that this low-density G-class Portland cementing system can meet the requirements of cementing operation for surface casing in deep water.

关 键 词：深水 固井 水泥浆 低温 水泥浆性能 抗压强度 

分 类 号：TE256.7[石油与天然气工程—油气井工程]