摘要
针对川东北地区上部地层出水量大的特点,研究开发了空气钻井雾化技术。研制的雾化基液具有较强的防塌和防泥包性能,在雾化基液中页岩回收率达98.9%,浸泡72 h的岩心无明显变化。在普光回注1井等进行了该技术的现场应用,结果表明,该空气钻井雾化技术在地层出水量达20 m^3/h时,仍可顺利安全钻进,表现出良好的防泥包和井壁稳定能力。
A new misted air drilling technique was developed for the high water -output formation of Northeast Sichuan Area. The prepared misted base fluid prevented well borehole collapse and drill stem bailing. The shale recovery in the misted base fluid was as high as 98.9%. The cores showed no significant change after immersed in the fluid for 72 h. The results of field applications in Puguang Reinjection Well 1 and other wells showed that the misted air drilling technique gave good anti - bailing and borehole - stabilizing capacities and also drilled wells smoothly and safely when the formation water- output was as high as 20m^3/h.
出处
《精细石油化工进展》
CAS
2009年第2期15-18,共4页
Advances in Fine Petrochemicals
关键词
空气钻井
雾化技术
井壁稳定
高出水地层
air drilling, misted technique, borehole stability, high water -output formation
