Southern Songliao Basin Haituozi - Dabusu North Lithologic Possession Of The Comprehensive Evaluation And Target Optimization

This paper systemically expounds the pertinent new reservoir predictiontechnologies ,methods and study strategy in the complicated and subtle reservoir ofstructural,and lithologic-structural reservoir at the Haituozi-north Dabusu area, southSongliao Basin.The trait of Haituozi-north Dabusu area is that it lies in the steep slope and thefront delta zone, and has the conditions of lithology reservoir-forming;it lies thelocality of southwest water system and south water system met, and has been provedthat have several oil-yielding stratums.Aim for the traits and difficulties aboutresearching area , based on the 3-d seismic data, we adopting correspondingtechnologies to resolve the low scope traps, small fault and thin sand seam. To resolvethe issue of low scope, we adopt technologies of veritable 3-d seismic datainterpretation, and variational velocity structure map formation. To resolve the issueof small fault identification, we adopt technologies of time slice , coherence cubecalculation and the technology of stratums dip angle detection. As to the lithologictraps detection, we adopt the technologies of seismic facies and seismic attributesextraction. lateral Predicting for thin sand-shale interbedding, we adopt technologiesof acoustic wave impedance inversion, we11 constrained Inversion of waveimpedance model and logging constrained seismic character inversion. All of the keytechnologies insure the succeeds of reservoir prediction and targets evaluation.The research depends on the high resolution seismic data ,and Integration ofmany dependable data of first-hand, such as make-hole well logging, testoil ,analysis and assay data etc, and begin with precise layer specification, by dint ofadvanced 3-d visualization software, and carrying on careful interpretation ofstructure , lithology interpretation and prediction of reservoir. that real 3-dvisualization interpretation is a characteristic in the reaching. when carrying onreservoir inversion, as to the issue of wave impedance can not differentiate sand-shaleinterbedding , via a great of experiments and contrasts, firstly bring forward thatusing the GR curve that sensitive to sand-shale and wave impedance reconstructcharacteristic curve to carry on seismic reservoir inversion, and get a great success.Based on all the above research,we not only recognizes the reservoir regulationabout the southwest water system and south water system in the project, fixed theobjects for further exploration at this area, and accumulated evaluation methods forprovenance met area, but also summarizes a set of lithologic trap evaluationtechnologies for the low scope, thin sand-shale in the middle and east of china. it hasgreat reference value for lithology reservoir exploration and production in the middleand east of china, especially for south SongLiao Basin.