陕北地区延安组浅层油藏效益建产研究

长庆油田分公司第一采油厂,陕西 延安 716000

鄂尔多斯盆地; 延安组; 砂体展布规律; 效益建产; 开发技术

Benefit production of the shallow oil reservoir of Yan'an Formation in northern Shaanxi
DANG Yong-chao,ZHANG Cai-zhi

(The First Plant of Changqing Oil-Field Company,Yan'an 716000,China)

Ordos Basin; Yan'an Formation; distribution regulation of sandbody; benefit production; development technology

DOI: 10.13800/j.cnki.xakjdxxb.2017.0616

备注

为了研究鄂尔多斯盆地中部浅层侏罗系延安组砂体展布及油藏主控因素,同时实现效益建产,通过运用沉积岩石学和地质学的理论知识,结合野外剖面、单井测井相及岩心观察等资料,对研究区浅层侏罗系延安组进行综合研究,弄清楚了该层系的沉积构造特征、储层物性特征、砂体展布及油气富集规律,为区块的滚动勘探奠定了一定基础。运用理论知识并结合多年矿场实践,总结了浅层侏罗系延安组勘探开发成功经验及认识,摸索出了适合浅层侏罗系延安组的单砂体识别、综合布井、钻井、压裂改造等关键技术,且在合理的产建开发技术政策指导下,实现了浅层侏罗系延安组效益建产,形成了浅层滚动开发特点的效益建产模式,为区块下步产建和开发指明了方向,也为同类油藏的勘探开发提供借鉴。

In order to study the sandbody distribution,the main controlling factors of the oil accumulation and the benefit construction achievement at Yan'an Formation of Jurassic in the shallow position of the central part of Erdos basin,we carried out an integrated study on the sedimentary characteristics,reservoir heterogeneity,sandbody distribution and oil-gas accumulation process based on the theoretical knowledge of sedimentology and geology,combined with field sections,single-well logging facies and core observation.The foundation for the rolling exploration is laid in this area.The paper summarizes the successful experience and understanding for the exploration and development of the Yan'an Formation in shallow position.The authors put forward some key technologies for the single sandbody idenfication,wells layout,drill and fracturing transformation.Under the guidance of a reasonable production and development policies,we have achieved the benefit production in the shallow position of Yan'an Formation,and formed a mode for the benefit production of the shallow rolling development,indicating a direction for the further construction and development in this area,and providing a good reference for the similar reservoir exploration and development.