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中国南海西部文昌海域的油气田最早于2000年开发至今已近17年。截止目前文昌海域已完成近十个油气田的投产开发,文昌海域油气资源储量及挖潜潜力巨大。随着近些年勘探发现,陆续部署和开展多个边际油田的综合调整研究,整个区块的地层压力和地质构造认识较为清楚,地层可钻性较好,开发及钻完井液配套技术成熟。本文以南海西部文昌海域某油田开发为例,着重阐述海上成熟油气田开发的钻井设计方法及应用,对后续调整挖潜具有重要指导意义。
The first oil and gas fields in Wenchang, west China’s South China Sea, have been developed for nearly 17 years since 2000. Up to now, Wenchang has completed the commissioning and development of nearly 10 oil and gas fields, and Wenchang sea area has huge potential for oil and gas reserves and potential tapping. As exploration has been made in recent years, the research on the comprehensive adjustment of a number of marginal oil fields has been carried out one by one. The understanding of formation pressure and geological structure in the whole block is relatively clear. The formation drillability is good. The supporting technologies for development and drilling and completion fluids are mature . Taking the development of an oil field in the western Wenchang sea area in the South China Sea as an example, this paper focuses on the drilling design method and its application in the development of offshore mature oil and gas fields, which is of great guiding significance for the follow-up adjustment and potential exploration.