摘要
准噶尔盆地西北缘乌-夏断裂带下盘风城背斜带的风城组油气藏地层脆弱且油层薄,因此使用欠平衡定向井工艺钻风501井。解决欠平衡稳斜段施工难点的对策是:①选择好造斜点的位置;②在满足工艺要求与井下安全的前提下,选择简单实用的欠平衡稳斜段钻具;③利用自浮式单点测斜仪,解决测量时的钻井液循环问题;④正确操作欠平衡压力钻井工艺技术。采用欠平衡定向井工艺施工,使风501井顺利地钻揭油层,施工中获得良好油气显示,投产后获商业性油流。该井的成功钻探所采用的工艺技术为低压断裂带油气藏的开发提供了技术保障。表1参3（王六新摘）
In order to develop the anticlinal belt oil reservoir of Fengcheng Formation in the lower plate of Wu-Xia fault block, which is located at the northwestern of Junggar basin in Karamay oil field, and considering its thin pay zone, the experts designed a under balanced directional Well Feng-501. During the drilling, the directional under-balanced and directional well engineers made some analyses of the difficult problems in drilling the under balanced hold angle section, and taken several measures: (1) Choosing the right kick off point (KOP) ; (2)Using bottom hole assembly (BHA) as simply as possible under the condition that meeting the directional technology; (3)Using self-floating single-spot measurement instrument to circulating mud during the surveying and (4)Proper operation in the under-balanced drilling. Using these measures, we successfully drilled the Well Feng-501. During the drilling, oil and gas shows were found. After putting into production, commercial flow was gained. The success of the Well Feng-501 widen the ways to explore the lower pressure fault belt oil reservoirs.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2002年第2期81-83,共3页
Petroleum Exploration and Development
