渤南探区明化镇组探井产能评价方法

Productivity Evaluation of Exploratory Wells in Minghuazhen Formation of Bonan Exploration Area

在海上油气勘探过程中,油气井测试是评价勘探成果的有效手段之一,测试前实现探井产能初步评价对于海上测试各项准备工作的开展具有重要意义。根据勘探阶段探井已有资料,采用综合指数法和径向流法建立了渤南探区明化镇组探井测试层产能预测模型;利用已有测试资料求取产能公式中的相关物性参数,为测试层产能预测模型的现场应用提供了基础;最后,将建立的产能模型应用于实际探井,通过对比2个测试层计算产能与测试产能,验证了模型的准确性。该成果对指导渤南探区下一步勘探开发具有一定借鉴意义。

In offshore oil and gas exploration, well testing is one of the effective means to evaluate exploration results.The preliminary productivity evaluation of exploration well before well testing is of great significance for the preparation of well testing.Based on the existing data of exploration wells in Minghuazhen Formation, a productivity prediction model for exploration wells is firstly built by using the comprehensive index productivity method and the radial flow method.Secondly, the relevant parameters of model are determined by using the existing data of exploration well test, by which a foundation is provided for field application of the productivity prediction model.Finally, the established productivity model is applied to calculate the actual exploration well productivity, and the accuracy of the model is verified by comparing the calculated productivity with the tested productivity of two tested layers.The result provides reference for guiding the next exploration in Bonan Exploration Area.