冀中坳陷区域JZ04井钻井工程设计

Drilling design of Well JZ04 in the Jizhong depression region

JZ04井是冀中坳陷区域施工的一口地热勘探井。作为该区域最深的一口地热勘探井,本井在钻井工程设计过程中主要根据JZ04井地质设计、邻井地层资料和相关物探资料等,设计中通过分析该区域地质资料,对该井的井身结构进行详细设计,对施工设备配置、钻具组合、钻井液体系、固井方式、井控装置等进行设计和选用;在储层保护方面提出相应措施和操作要求;考虑本井设计深度大,所钻地层较复杂,加之地层资料准确性欠佳,会导致后期施工风险较大,为此,设计中对本井施工难点做出提示和相应解决措施。在后续项目施工过程中,本设计可以对工程施工提供一定的指导方向,为下步顺利钻至目的层,完成钻探任务提供了有力保障。

Well JZ04 is a geothermal exploration well in Jizhong depression.As the region’s deepest geothermal exploration well,its drilling design is mainly based on its geological design,adjacent well stratigraphic data and related geophysical data.The detailed design of the well hole structure is conducted through analysis of the regional geological data,with design and selection of the drilling equipment,the drilling stem,the drilling fluid system,the cementing method,well control device and so on.The relevant measures and operation requirements are put forward for reservoir protection.Considering high risk in later drilling operations due to great well depth,complex strata,and compromised accuracy of formation data,the drilling difficulties and the corresponding solutions are given in the design.The design can provide some guide for later drilling operations;hence support for drilling smoothly to the target layer to complete the drilling task.