腐殖酸钙抗高温钻井液体系研究  

ANTI-HIGH TEMPERATURE DRILLING FLUID SYSTEM WITH CALCIUM HUMATE

作　　者：杨莉[1] 

机构地区：[1]西南石油大学石油工程学院,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2011年第4期153-156,200,共4页Journal of Southwest Petroleum University(Science & Technology Edition)

摘　　要：钻井作业对钻井液处理剂的抗温性要求越来越高,原有钻井液体系已无法完全满足深井及超深井的钻探需要。根据腐殖酸钙抗高温作用机理,采用钻井液高温滚动、流变性、失水造壁性等实验与评价方法,分析了不同CaO和膨润土加量对钻井液体系性能的影响,选用CMC、SMP、FV-2等抗高温降失水剂,提出了一套抗高温180℃、抗盐30%的腐殖酸钙钻井液体系。结果表明:最佳的腐殖酸钙钻井液体系配方为0.3%CaO+7.0%SMC+5.0%膨润土原浆+5.0%SMP-1+0.3%FV-2,抗高温抗盐效果良好。Drilling operations have set an increasingly higher requirements on heat resisting capacity of drilling fluids,and the conventional drilling fluid systems could not well met the requirements of the deep or ultra-deep well drilling. based on calcium humate heat resisting mechanism,the experiments and ways of evaluation including drilling fluids in high temperature rolling,rheological characteristics,and fluid loss property are carried out,and the performance of drilling fluid system which could be influenced by different CaO and increasing bentonite is comparatively analyzed. Anti-high heat fluid loss additives such as CMC,SMP,FV-2 are optimally screened,and a series of calcium humate drilling fluid system with anti-high heat(180℃)and anti-salt(30%)is raised. The results show that the optimal base fluid contains 0.3% CaO,7% SMC and 5% bentonite,while the optimal calcium humate drilling fluid system contains 7% SMC,0.5% CaO,5% bentonite,5% SMP-1 and 0.3% FV-2,which has an excellent resistance to high heat of 180℃ and high salinity of 30%.

关 键 词：腐殖酸钙 钻井液 抗温 抗盐 深井 

分 类 号：TE254[石油与天然气工程—油气井工程]