塔河油田碳酸盐岩缝洞型油藏开发关键技术.pdf

世界石油工业 I中国油气论坛塔河油田碳酸盐岩缝洞型油藏开发关键技术刘中云中国石油化工股份有限公司西北油田分公司摘要塔河油田碳酸盐岩缝洞型油藏储集空间多样,非均性极强,开发上没有现存经验可寻。本文系统总结了塔河碳酸盐岩油藏多年开发攻关与实践形成的7大开发关键技术。其中,碳酸盐岩缝洞型油藏描述技术包含缝洞储集体识别和三维空间描述、缝洞单元划分及分类评价以及储层地质建模等独特技术方法;高效井位部署技术在地震反射特征分类评价的基础之上,形成了碳酸盐岩油藏区块分期分层次优化、医带优化以及井位选点优化等技术;开发储量分类及评价技术把探明储量划分为五类,深化了对不同类型储量可靠性及分布认识, 加快了评价开发的储量资源基础;提高采收率技术有独具特色的单井注水替油及单元注水提高采收率技术和注气替油三次采油技术;另外工艺配套开发关键技术有超深井优化钻井技术、高效酸压工艺技术和稠油降黏开采技术。各项开发关键技术为塔河油田高效动用及开发、持续上产稳产做出了重要支撑。关键词塔河油田缝洞型油藏开发关键技术开发效果 Abstract Because ofthevarious spacious form andhighly hemrogeneky ofTahe Oilfieldcarbonate fractured— cavity reservoir,there no existing development experience paper systematically summarizes seven key technologies oftheTahe carbonate reservoirs formed byyears ofresearch and practice development them,the description techniques ofthecarbonate fractured—cavity reservoir can bettercarry out thefractured-cave identification and three-dimensional space division and classification evaluation offractured—cavity unitandreservoir modeling techniques:Efficient wellplacement technology together withtheclassification andevaluation oftheseismic reflection characteristics,formed optimizations including area producing、zone deployment and welllocation:Classification and evaluation ofdeveloped reserves techniques divide theproved reserves intofivecategories,deepen the anddistribution ofdifferent types o