玛湖含砾难钻地层防斜打快技术研究及试验  

DEVELOPMENT AND FIELD TEST OF A NEW TYPE OF TOOL APPLIED TO DRILLING FAST IN GRAVEL FORMATION IN MAHU AREA

作　　者：邹灵战[1,2] 李维轩 焦志栓[2] 刘力 路宗羽 刘颖彪[1] 

机构地区：[1]新疆油田分公司,新疆克拉玛依834000 [2]中国石油钻井工程技术研究院,北京102206

出　　处：《新疆石油天然气》2017年第3期15-18,共4页Xinjiang Oil & Gas

摘　　要：新疆玛湖凹陷是新疆油田增储上产的重点地区,二叠系砂砾岩沉积地层制约了钻井提速,且部分区块地层倾角引起井斜。针对该地区二叠系的地层特点,研发了FX-YC-172DE新型防斜打快钻井工具和个性化的PDC钻头设计。该工具运用偏轴防斜原理预防井斜,并以一定的频率给钻头施加机械冲击力,并把连续的射流变为脉冲射流,从而提高钻头破岩效率,个性化的PDC钻头针对牙齿崩坏问题,采用新型锥形齿、优化钻头结构设计,从而形成玛湖二叠系难钻地层防斜打快的组合技术。该技术在新疆玛湖二叠系含砾地层进行了试验,进尺338 m,机械钻速2.67 m/h,见到了明显的提速成效,井斜控制在1°以内,为玛湖二叠系难钻地层的防斜、提速提供了有效的技术手段。Mahu depression is the key area of Xinjiang oilfield production. Glutenite formation of Permian constraints on the drilling speed,and some blocks of dip caused by deviation. According to the characteristics of the formation,a new type of drilling tool,FX-YC-172,is developed. The utility model includes the principle of partial axis inclining prevention,and impact force to the drill bit at a certain frequency. Experiments were carried out in Permian strata in Mahu,with footage of 338 meters,and 2.67 m/h mechanical drilling speed,hole deviation controled within 1°. This new tool provides an effective technology way in Mahu hard stratum.

关 键 词：防斜打快 钻井提速 含砾地层 个性化PDC钻头 

分 类 号：TE242[石油与天然气工程—油气井工程]