Font Size: a A A

Seismic Facies And Reservoir Prediction Of Maokou Formation During The Permian In Southeast Sichuan

Posted on:2014-07-09Degree:MasterType:Thesis
Country:ChinaCandidate:T ZhangFull Text:PDF
GTID:2250330398494425Subject:Geological engineering
Abstract/Summary:PDF Full Text Request
southeast Sichuan located in Southeast of hydrocarbon-rich sichuan basin whose main part located in guizhou province and Chongqing and who local across sichuan province. Subject positions of structure of southeast Sichuan located in lower steep fold zone which across the arc high and steep fold belt in east Sichuan and brush fold belt in the south of south Sichuan; Meanwhile it located in the area which between south of HuaYingShan brush mountains pitching and the north of DaLouShan mountains. In order to study structural characteristics、seismic facies and reservoir prediction of Maokou Formation,on the basis of logging data after drilling and analysis data after test; based on seismic data; around the expansion of studing sensitive seismic attributes and geophysical characteristics of the reservoir.carrying out research for calibration of synthetic seismogram and subtle horizon interpretation、 the effective combination of fault、structure characteristics based on seismic data; at the same time, on the basis of geological data and the principle of seismic exploration, getting seismic facies plan in use of the response of seismic trace near the well、regional seismic facies、partial seismic facies; By means of geological data and the data of the single well sedimentary facies, on the basis of seismic inversion、 piercing test of seismic data、analyzing and studing seismic attribute, carrying out prediction for planar distribution of favorable reservoir; put forward the scheme for dividing the favorable zones after analyzing structure diagram of reflector of Maokou Formation.Major development in the study area is thrust faults,which Spreading north-east east、north north-west、nearly east-west,among them the larger fault is north east-east fault.And now structural shape whose exhibition is nearly ns-trending is mainly affected by the activities of reverse faults which is north north-west extension and is different on tendency. Maokou Formation in study zone is divided into three kinds of regional seismic facies and two types of local seismic anomal which display foreset and hummocky, seismic facies which is beneficial to reservoir is the Imbricate foreset structure whose deposition thickness is thin but distributing more widely. Anomalous of fracture-cavity maybe better depicted by microfracture system imaging technology and velocity inversion techniques. Reservoirs of Maokou Formation are shown as that black crumb anomalous distribute intermittent on attribute section detected by fracture-cavity and that yellow and red low velocity abnormal banding on velocity profile. Maokou Formation in study zone is divided into two kinds of Favorable reservoir areas. There are three first-class favorable reservoir areas and seven second-class favorable reservoir areas.first-class favorable reservoir areas mainly located in the middle and the north east of the study area, and second-class favorable reservoir areas mainly located in the western、southern、southeast、eastern、north of the study area.first-class favorable reservoir areas are shown as better Seismic facies and Seismic inversion, second-class favorable reservoir areas are shown as that is no better than the first-class favorable reservoir areas.
Keywords/Search Tags:Maokou Formation, structural characteristics, seismic facies, seismic inversion, reservoir prediction
PDF Full Text Request
Related items