摘要
CHE油田位于阿根廷门多萨市以南安第斯山脉东麓库亚那(Cuyana)盆地中部。该油田上部地层富含活性黏土,造浆趋势强,易出现钻头、扶正器泥包;下部地层受造山运动影响,地应力强,井壁稳定性差,掉块多,易发生卡钻;目的层渗透性好,易形成厚泥饼,导致起下钻阻卡严重;地层中含有CO2,易出现HCO3-污染;现场无钻屑池,要求钻屑不落地、废液零排放,对固相控制技术的要求高。江汉油田阿根廷项目部在该油田完成5口开发井,通过采用聚合物钻井液,配合先进的固相控制技术及针对性的防塌技术,较好地解决了以上技术难题。应用结果表明,将高、低速离心机串联使用,同时采用化学絮凝技术,既能清除劣质固相,又不浪费加重材料,能彻底解决该油田钻井液施工中的固相控制问题,有利于保持钻井液性能稳定。
Some difficulties are encountered in CHE oilfield, which are balled bit and stabilizer in upper formations, cavingand sloughing in lower formations, thick mud cake in target formation, and contamination of HCO3- in formations. Thepolymer drilling fluid system is successfully applied in 5 development wells, cooperated with advanced solid-controltechnology and anti-collapsing technology, the solids can be eliminated and also the weighting material can be saved toovercome the problems of solid-control of this oilfield.
出处
《钻井液与完井液》
CAS
北大核心
2012年第4期41-44,90,共4页
Drilling Fluid & Completion Fluid
关键词
聚合物钻井液
地层造浆
井壁坍塌
零排放
HCO3-污染
絮凝
固控设备
CHE油田
Polymer drilling fluid
Formation mud making
Wellbore collapsing
Zero-discharge
Contamination of HCO3-
Flocculation
Solid-control equipment
CHE oilfield
