一种深水水基钻井液关键外加剂的优选评价  

Study on Key Additive for Water Base Drilling Fluid System of Deepwater Drilling

作　　者：刘卫红[1] 许明标[1] 陈强[2] 黄治华[2] 由福昌 

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油田化学事业部塘沽基地,天津 [3]荆州嘉华科技有限公司,湖北荆州

出　　处：《钻井液与完井液》2012年第6期6-9,85,共4页Drilling Fluid & Completion Fluid

基　　金：国家科技重大专项"大型油气田及煤层气开发"子课题"深水钻井工程设计关键技术研究"(2008ZX05026-001-01)的部分内容

摘　　要：钻井液对气体水合物的抑制性能和低温下良好的流变性能是深水钻井液的关键性能。通过对关键外加剂的优选,室内建立了一套用于2 000 m深水钻井的水基钻井液体系,该钻井液采用反相微乳液聚合物增黏剂UFLOW及改性植物胶VIS-HX作为钻井液的流型调节剂,以热力学抑制剂NaCl和聚合醇配以动力学抑制剂聚乙烯吡咯烷酮(PVP)作为气体水合物抑制剂。该钻井液在低温下能保持良好的流变性能;同时在水深为2 000 m、水温在3℃左右的环境下,该钻井液可抑制气体水合物的生成。In deepwater,to prevent gas hydrating and keep suitable rheology at low temperature are the key properties of drilling fluid systems.A water base drilling fluid system used for deepwater drilling is developed,composed of viscosifier UFLOW synthesized by inverse microemulsion,rheology regulating agent VIS-HX modified by plant gum,and gas hydrate inhibitors NaCl,polyalcohol and polyvinyl pyrrolidone (PVP).The drilling fluid system can keep good rheology at low temperature,the YP and 6>3 values change slightly among the operating temperature ranges,and it can prevent gas hydrating effectively at the water depth of 2,000 m and the temperature of 3°C.

关 键 词：深水钻井液 热力学抑制剂 动力学抑制剂 流型调节剂 

分 类 号：TE254.4[石油与天然气工程—油气井工程]