琼东南盆地深水天然气开发评价井钻探模式

Drilling mode of development evaluation well of deep-water natural gas in Qiongdongnan Basin

陈奎,范彩伟,韩光明,宋瑞有,李胜勇,朱玉双

西北大学地质学系/大陆动力学国家重点实验室，陕西 西安 710069 中海石油（中国）有限公司湛江分公司，广东 湛江 524057 中海石油（中国）有限公司海南分公司，海南 海口 570300

Department of Geology/State Key Laboratory of Continental Dynamics, Northwest University, Xi′an 710069, China Zhanjiang Branch of CNOOC Limited, Zhanjiang 524057, China Hainan Branch of CNOOC Limited, Haikou 570300, China

为了解决琼东南盆地深水中央峡谷区后续开发门槛高、可持续开发难度大等问题，采用深水天然气勘探开发一体化技术，对优质潜力目标的钻探模式开展了研究。将应用效果显著的开发评价井钻探模式引入深水天然气勘探开发一体化目标钻探模式。该模式分为开发钻探模式和勘探钻探模式：开发钻探模式又包括生产平台钻探模式、生产井项目钻探或兼探模式；勘探钻探模式又包括快速评价模式、滚动探井兼探模式。在上述钻探模式的指导下，在琼东南盆地深水中央峡谷区实施的4口开发评价井均获得成功，钻遇近170 m气层，实施效果好，证实深水天然气开发评价井钻探模式能够升级控制地质储量，促进难动用探明地质储量动用，实现增储上产，促进深水气田开发。

 In order to solve the problems of subsequent high development threshold and great difficulty in sustainable development of deep-water central canyon area in Qiongdongnan Basin, the drilling model of high-quality potential targets is studied by using the integrated technology of deep-water natural gas exploration and development. The development evaluation drilling mode with remarkable application effect is introduced into the integrated exploration and development mode, including development drilling mode and exploration drilling mode. The development drilling mode includes production platform drilling mode and production well project drilling or concurrent drilling mode. The exploration drilling mode includes rapid evaluation mode and rolling exploration well concurrent drilling mode. Under the guidance of the above drilling mode, four development evaluation wells in the deep-water area in Qiongdongnan Basin were successfully drilled, nearly 170 m gas reservoir was drilled with good implementation effect. It is proved that the development evaluation drilling mode of deep-water natural gas can upgrade controlled reserves, promote the production of difficult-to-produce proven reserves, increase reserves and production, and promote the development of deep-water gas fields.

10.6056/dkyqt202201021