优快钻井技术在锦州9-3油田开发中的应用

Application of High Quality and High Speed Drilling Technology in JZ 9-3 Oil Field

渤海辽东湾锦州9-3优快钻井项目共钻井47口,总进尺107 126m;经过394.53d的艰苦努力,创造了平均井深2328.83m,平均井斜角38.47°,平均水平位移1009.8m,平均建井周期7.79d的好成绩。该项目是目前渤海公司优快钻井项目中钻井进尺最多、井数最多、作业时间最长、地质和海况条件最恶劣的项目。该项目应用了渤海优快钻井等10大配套技术,并具有4大特点:首次使用钻井沉箱加钻机滑移底座方式钻丛式生产井;首次在30口井之多的平台上钻密集丛式井;首次采用低温速凝固井水泥浆封固表层技术;首次将优快钻井项目进行跨年度多钻机的连续作业。与1995年8D井相比,锦州9-3油田钻井项目实现了平均机械钻速提高3.6倍,钻井效率提高3.32倍的钻绩,为渤海进一步提高优快钻井水平和推广优快钻井技术,提供了宝贵经验。

This paper summarizes the practical experience of high quality and high speed drilling technology in JZ 9-3 oil field which lies in Liaodong Bay of Bohai. The JZ 9-3 drilling program had drilled 47 wells with total footage of 107 126 m. Through the 394.53 days endeavor, the project made the following achievements: the average depth was 2 328.83 m;the average incline was 38.48°; the average section was 1 009.8 m and the average operation period was 7.79 days. At present,the footage,number of wells,operation time,geological conditions and operation environment kept many records of high quality and high speed drilling technology comparing with other projects in Bhai. The footage was the largest;the number of wells was the highest, the operation time was the longest and the geological condition and operation environment were the worst. The project adopted ten relative high quality and high speed drilling technologies and had four characteristics. For the first time, the cluster drilling operation used the method of drilling caisson with slipping foundation rig;it was the first time that drilling 30 wells from one platform;using low-temperature and quick solidification cementing technology to cement surface firstly; it was the first time that the continuous operation of rig lasted more than one year and the average ROP improved 3.6 times and the drilling efficiency improved 3.32 times comparing with the 8D well in 1995. In order to improve and extend high quality and high speed drilling experience,the imporatant references and experiences are presentd in this paper.