摘要
渤601井是渤南油田一口重点评价井,钻探目的是扩大渤深6断块潜山低部位含油气范围.该井四开钻探过程中成功地采用欠平衡钻井技术钻穿寒武系凤阳山组,以防止该区古生界灰岩储层发生井漏及储层污染,从而保护油层.在该区发现了高产工业油流.在欠平衡钻井中成功地进行了中途测试,并提高了深井钻井速度,为渤南地区裂缝性地层钻井提供了宝贵的经验.结合渤601井实际情况,给出了地质设计和工程设计,分析了施工过程中主要技术难点,介绍了钻前准备工作、欠平衡钻进、完井和施工效果.
Bo-601 well is a important evaluation well, and the aim of drilling it is to extend the oil and gas range of the lower parts of the burial hill in Boshen-6 fault block. Under balance pressure drilling technique is used in the fourth drilling of the well to drill through Fengshan Formation of Cambrian. Using under balance pressure drilling technique aims at preventing the mud loss and pollution of Palaeozoic limestone reservoir in this area and therefore protecting oil reservoir. In the process of under balance pressure drilling, high-production commercial oil and gas flow is found, and drill stem tests are successfully carried out. Under balance pressure drilling technique also enhances the drilling rate of deep wells. The application of under balance pressure drilling technique to Bo-601 well provides the experience for drilling the fractured formation in Bonan area. The geological design and engineering design of Bo-601 well, the main technical difficulties in drilling construction, and the pre-drilling preparation, drilling, completing and construction result of the under balance pressure drilling of Bo-601 well are introduced in detail.
出处
《西安石油大学学报（自然科学版）》
CAS
2005年第4期53-56,共4页
Journal of Xi’an Shiyou University（Natural Science Edition）
关键词
欠平衡钻井
工程设计
防塌钻井液
中途测试
under balance pressure drilling
engineering design
cavey-preventing drilling fluid
drill stem test
