Deep Volcanic Poststack Seismic Inversion And Reservoir Prediction Of Anda Area

With the deepening of the exploration and development of the oil field, volcanic gasreservoirs has become the focus of exploration, But how to accurately predict the effectivereservoirs of the volcanic rocks is a difficult.Therefore,in this paper, we comprehensively usemultiple disciplines,And under the guidance of previous knowledge men, Take full advantageof the Seismic data, well log data, drilling data and Petrophysical analysis of data of theregion of ANDA, Use of the constrained inversion of seismic logging, Obtainedhigh-resolution acoustic impedance inversion profile. Further conduct volcanic reservoirprediction of the Yingcheng of Anda areas, Comprehensive description distribution ofvolcanic reservoirs range、 Volcanic lithology、 lithofacies、 Occurrence and reservoirparameters distribution，Fine portrayed Seismic data structures and Gas water distributionrelationship cross hole,Analysis and Comprehensive evaluation of the type of gas reservoir.On the basis of Yingcheng Group volcanic rocks faulted on Anda which full studycycle, subcycle volcanic bodies and the eruption.on the subdivision basis of Single welllithological characteristics and Logging curves（Gamma、 deep lateral resistivity、 LLS、AC、RHOB and NPHI）Carried out the body of the volcanic edifice explained in the Volcanicrocks of the yingcheng of anda Region,Calibration of the fine seismic geologicalformations,Contrast to explain to carry out the calibration on the basis of the horizon andfault.Better understanding of Volcanic strata Volcanic eruption sequencesof yingcheng,Dissection Volcanic rock of yingcheng,To explore each the volcanic strata contactrelationship.From the volcanic eruption of scale to study and understanding of spatial andtemporal distribution of the volcanic body of rules and control factors,Laid the foundation forthe fine anatomy of the volcanic strata.Against to this characteristic that deep volcanic rocks and sedimentary rocks haveobvious differences,take the Poststack inversion approach in the region of Yingcheng volcanicrocks,use the distribution characteristics of the sparse spike inversion and the densityinversion of the volcanic reservoir in the Yingcheng,have a Comprehensive evaluation of thereservoir,to determine the favorable zone.