Research On The Rule Of Hydrocarbon Accumulation In Chang2oil Reservoir In The Eastern Region Of The Jingbian Oil

Jingbian oilfield is located in the eastern region of Yulin City, Shaanxi Province,including Zhen jing, Xiao he, Yang mijian,Qiao gouwan, Tian ciwan5small towns, from westto east, a total of13blocks, covering an area of approximately902Km2. Objective layersChang-2.This study used the sedimentary microfacies and sand distribution describes theapplication of advanced technology, reservoir heterogeneity research techniques, integratedreservoir studies, reservoir technology, micro-structural study, by Chang-2oil reservoirs finereservoir study seeks to provide a theoretical basis for regional exploration and developmentwork, but also hope that this research can provide ideas for other horizons study areas or otherareas.Jingbian Chang-2reservoirs located in the eastern part of the Ordos Basin in northernShaanxi slope zone, Chang-2are the main oil producing. According to a comprehensivecomparison of lithology, electrical and other well logging curve analysis, the Chang-2reservoir is divided into Chang-21, Chang-22and Chang-23three sub-reservoir group.Through research and analysis of data shows that of Chang-2reservoir sandstones aremedium-fine grained feldspathic sandstone,Chang-2,porosity and permeability of the reservoirhas a good positive correlation of permeability with increasing porosity large andincreasing.Pore type in the intergranular pores and dissolved pore，the residual intergranularpores and feldspar dissolution porosity is the main reservoir of the reservoir space．The studyarea the main types of combination between pore and throat are mesopore leptoroat and finepore-leptoroat:the main reservoir for the Chang-2type II and III a low permeability reservoirClass of low permeability reservoir.And comprehensive Chang-2oil and gas reservoiranalysis， pointed out that the Chang-2main types of oil and gas reservoirsconstruction-complex lithology reaervoirs.This study is not only to learn more about the reservoir characteristics of the region, butalso to find the key factor restricting Jingbian oil exploration and development, and provide atheoretical basis and technical support for future exploration and development work in thearea.