巴彦油田深井高凝油藏试油完井一体化技术

Integration technology for testing and completion of deep well high point reservoir in Bayan oilfield

针对巴彦油田深井高凝油藏在试油完井施工中存在工艺复杂、施工周期长、储层二次伤害严重、施工成本高等问题,通过分析现有的高温高压深井试油完井一体化技术特点及存在不足,结合临河油区油藏地质特征和原油物性特点,设计了3套试油完井一体化管柱,制定了相应的工艺流程,并对每种一体化工艺的特点及适用条件进行了分析。上述3种试油完井一体化技术已在现场成功试验14口井,其中压裂-射流泵排液一体化技术现场试验9口井,缩短施工周期2~3 d,有效提高了压裂后排液求产效率,降低了储层二次污染;完井投产一体化技术现场试验5口井,提高了自喷井和机抽井完井投产效率,缩短了单井完井周期,减少了储层污染,降低了作业成本。深井高凝油藏试油完井一体化技术的成功应用为巴彦油田勘探开发一体化进程高效推进提供了有力的技术保障,对国内同类型油藏试油完井技术研究具有指导借鉴意义。

In view of the problems of complicated process,long construction period,serious secondary damage of reservoir and high construction cost in the construction of deep well and high point reservoir in Bayan oilfield,th ree sets of integrated well testing and completion pipe strings were designed by analyzing the characteristics and shortcomings of the existing integrated technology of high temperature and high pressure deep well testing and completion,combined with the geological characteristics of the reservoir and the physical properties of crude oil in Linhe oil area.The corresponding process flow is established,and the characteristics and applicable conditions of each integrated process are analyzed.The integrated technology has been successfully tested in 14 wells,including 9 wells,which shorten the construction period by 2-3 days,effectively improve the production efficiency of fluids after fracturing,and reduce secondary reservoir pollution.The integration technology of completion and production was tested on 5 wells,which improved the completion and production efficiency of flowing well and mechanical pumping well,shortened the completion period of single well,reduced reservoir pollution and reduced operating costs.The successful application of the integrated technology of deep well and high point oil testing and completion provides a strong technical guarantee for the efficient promotion of the integration process of exploration and development in Bayan oilfield,and has a guiding significance for the research of the same type of oil testing and completion technology in china.