摘要
针对东海大位移井斜度大、稳斜井段长,使用油基钻井液套管清洁困难的问题,分析了在大位移井完井、测试作业中利于储层保护的高效井筒清洁技术。基于大位移井井筒清洁技术国内外进展,结合东海地质特点、岩屑特点,从油基钻井液清洗和岩屑清除两方面分析了大位移井井筒清洁技术难点及影响因素,优选出了与东海地质情况配伍、利于储层保护的高效井筒清洁液,深入分析清洁工具原理,并优选了井筒清洁工具,形成了大位移井井筒高效清洁作业流程,对东海大位移井井筒清洁具有重要意义。
Aiming at the problems of large deviation and long deviation-stabilizing section of extended reach wells in the East China Sea and difficult casing cleaning with oil-based drilling fluid, the high-efficiency wellbore cleaning technology for reservoir protection in extended reach well completion and testing was investigated and studied. Based on the domestic and foreign research on the wellbore cleaning technology of extended reach wells, combined with the geological characteristics of the East China Sea and the characteristics of cuttings, the difficulties and influencing factors of wellbore cleaning technology of extended reach wells are analyzed from two aspects of oil-based drilling fluid cleaning and cuttings removal. The efficient wellbore cleaning fluid that is compatible with the geological conditions of the East China Sea and conducive to reservoir protection is optimized. The principle of cleaning tools is analyzed and the wellbore cleaning tools are optimized to obtain the efficient cleaning operation process of extended reach wells. It is of great significance to wellbore cleaning of extended reach wells in East China Sea.
出处
《自然科学》
2023年第1期115-124,共10页
Open Journal of Nature Science
