深水合成基钻井液研究  

RESEARCH ON DEEPWATER SYNTHETIC BASED DRILLING FLUID

作　　者：胡友林[1] 岳前升[1] 刘书杰 

机构地区：[1]长江大学石油工程学院 [2]中海油研究总院

出　　处：《钻采工艺》2012年第3期71-74,12,共4页Drilling & Production Technology

基　　金：国家科技重大专项<大型油气田及煤层气开发>"荔湾3-1气田钻完井液体系优选"(编号:2008ZX05056-002-03-04);"西非深水油气田钻井液体系优选"(编号:2008ZX05030-005-07-03)部分研究成果

摘　　要：随着科学技术的进步和人类对海洋石油资源认知水平的不断提高,海洋油气勘探开发已从浅海走向深海,甚至超深海。深水钻井液技术是深水钻井的关键技术之一,低温流变性和气体水合物是深水钻井液面临的主要问题。为了解决该技术难题,通过室内实验优选出了深水线性α烯烃合成基钻井液配方,并模拟深水作业温度环境研究了其低温流变性。研究结果表明,钻井液的黏度随着温度降低上升,而钻井液的Φ6和Φ3读数、动切力几乎不受温度影响。采用DSC(差示扫描量热法)技术研究了优选的深水合成基钻井液在20MPa、0℃条件下无气体水合物生成。室内实验研究结果表明,优选的合成基钻井液具有较好的抗温能力、抑制性、储层保护能力。With the technology advancement,the offshore oil exploration and exploitation are being approached from shallow sea to deep sea,even to the ultra-deep sea.Deepwater drilling fluid technology is one of the key technologies on deepwater drilling,the main problems of deepwater drilling fluid are low temperature rheological property and gas hydrate.In order to solve the technical problems,the deepwater liner alpha olefin synthetic based drilling fluid formulation was optimized by laboratory experiment,and the low temperature rheological property of synthetic based drilling fluid was researched by simulating deepwater operation temperature.The results showed that the viscosity of drilling fluid increased with the temperature decreasing,but the 6&3 rpm readings and dynamic tangential force of drilling fluid nearly weren't affected by temperature conditions.The gas hydrate formation ability of optimized deepwater synthetic based drilling fluid was studied at the pressure of 20MPa and the temperature of 0℃ by DSC(Differential Scanning Calorimetry) technique,the results showed that there was no gas hydrate formation.The laboratory results showed that the drilling fluid's properties of resistance to temperature,inhibition,and the ability of reservoir protection were better.

关 键 词：深水钻井 合成基钻井液 低温流变性 天然气水合物 

分 类 号：TE254.1[石油与天然气工程—油气井工程]