Study On The Characteristics Of Source-Rock Of Carboniferous-Permian Shale-Gas In Mianchi Block

With the growing demand for clean energy and the US shale gas commercially driven,domestic oil and gas geological theory unconventional deepening exploration and development of technological progress.Unconventional is a new and important area for future oil and gas exploration and development,including the rapid development of shale gas.Henan conventional mineral exploration development and production practice for Mianchi Carboniferous-Permian carried out a lot of coal and oil and gas resources investigation,drilling of coal shale gas segment to see different levels of display,indicating that having good prospects for oil and gas resources.Based on previous research data and results of the tectonic evolution of sedimentary process Mianchi areas for analysis,in-depth analysis of Mianchi Carboniferous-Permian sedimentary facies,an initial understanding of the Henan Mianchi Carboniferous-Permian organic-rich mud page the overall thickness of the big rock,single thin interbedded sandstone sandwich more features;wherein the wide group of Taiyuan,Shanxi formation and Shihezi shale distribution area,large thickness,shale gas as the main source rocks.Catalog and horizon by Mianchi ZK0302,ZK0302 and Mianchi Xin ZK1009 three drilling contrast,systematic sampling and carry out organic geochemical experiments,obtained the above three wells Carboniferous-Permian thickness of each group of source rocks,organic matter abundance,organic matter type and maturity of organic matter and other indicators,through the analysis and synthesis of systems research,form the following understanding:(1)Carboniferous-Permian hydrocarbon source rocks are mainly type?and type?2,organic carbon content above 1.18%;organic maturation degrees are mature-high maturity,with the basic conditions for shale gas generates.(2)The development of five object layers,each layer object layer thickness more than 10 m above the target layer depth is between 1500 ~ 4500 m,the surface of the plains and hills,with the purpose to bottom layer pre 18 km exploratory extension control is bounded by an area of 352.04km2,as Mianchi Carboniferous-Permian shale gas exploration area favorable direction.