Application Of Volcano Orck Seismic Inversion Technology In Deep Gas Exploration

With the improvement of technology and the deepening of exploration，The researchon natural gas of deep volcano rock has achieved abundant research results，In particular,have very profound understanding of reservoir space types, characteristics etc, In spite ofprediction research of the volcano rock has made great progress, setting and formingmechanism of the volcano rock geological have very big difference, macro to microcomplex geological structure, lithology changes fast, transverse distribution forecast isdifficult, at the same time, volcano rock developed early in the basin, geophysicalcharacteristics of material interface is not obvious, complicated wave field. Therefore,volcano rock formation strata distribution, complex exploration target recognition isdifficult, it become a bottleneck restricting the development of oil and gas exploration.At present domestic and international research on deep volcano rock reservoirprediction technique, still remain in the stage of qualitative description, reservoirprediction technology has not fully meet the requirements of research, in urgent need ofreservoir inversion we carry out the volcano rock unit. The volcano rock reservoir is greatsignificance to the exploration and development of volcano rock oil and gas reservoirprediction.This paper mainly introduces in the north of Xushen gas field the specific applicationof volcano rock seismic inversion technology in practical exploration and developmentproblems:①we formed the volcano seismic recognition mechanism. According trendsurface analysis technique, the amplitude slices, slices of coherence cube technique,seismic attributes analysis technology, we effectively identificatied development zone onthe volcano mechanism.②According the fine structural interpretation to the volcanoeruption, model, combination of well and seismic profiles, in Anda area volcano rockformation mechanism according the volcano eruption sequence of fine mesh,we built avolcano rock strata control interpretation process.③According the volcano rock of full 3D interpretation of seismic stratigraphy interface,we cleared the relationship between thedistribution of volcano rock, with the further understanding of the regulation and controlof temporal and spatial distribution of factors on volcano rock,and understood the basis ofvolcano eruption scale mechanism.④The exploration of the body control modelingtechnique, the volcano rock formation in Anda area division,we formed a preliminarymodel volcano rock strata.⑤applicating of the inversion of seismic body to establish themodel of volcano rock formation, we provided the basis for the volcano rock reservoir inAnda area prediction.⑥using of a plurality of volcano rock modeling poststack reservoirprediction technique based on the effective identification of gas layer,we formed thetechnical flow of volcano rock reservoir prediction.