冀东南堡凹陷非常规油气资源潜力研究

利用地球化学、岩石矿物、测井及录井等资料系统研究冀东南堡凹陷非常规油气资源,认为南堡凹陷火山岩、泥页岩厚度大、有机质丰度高、类型好、成熟度分布范围广,具备形成油气藏的物质基础;南堡凹陷火成岩气孔或裂缝发育、泥页岩裂缝发育,均具有一定的储集性能,同时有利于油气的开采。通过对火山岩、泥页岩进行试油试采,在沙河街组火山岩中试气获得了日产16×104m3的高产天然气流,在沙三段泥页岩进行压裂投产,初期日产液30m3,目前日产液5m3,日产油2t,已累计产油500t。研究结果表明南堡凹陷非常规油气藏具有良好的勘探开发潜力,展示了良好的勘探开发前景。

Study of the Hydrocarbon Potential of Unconventional Oil and Gas Resources in Jidong Nanpu Depression

Study of the unconventional oil and gas resources in Nanpu depression has been conducted with the geochemical,rock and mineral,well logging and mud logging data.It is concluded that volcano rocks and shales in Nanpu Sag are large in thickness,with high abundance of organic matter and good organic matter types,and wide range in maturity,which provided material basis for formation of oil gas reservoir.In addition,igneous rock pores or cracks and shale fractured well are well developed in this depression,with good reservoir properties,being favorable for oil and gas exploitation.Through oil production testing on volcano rocks and shales,160 000 m^3/ d high yield of natural gas was obtained in Shahejie Fm volcano rock.Fracturing was conducted in shale of Sha-3Member,with initial liquid production of 30 m^3/d.At present,the daily liquid production is 5 m^3/d,and daily oil production is 2 t/d,and the accumulative oil production is 500 t by now.The study results show that the unconventional oil and gas reservoirs has great potential in hydrocarbon exploration and development in Nanpu depression,with excellent prospects for hydrocarbon exploration and development.