Detailed Structure Interpretation And Reservoir Prediction Of Xinglongtai Oil Reservoir In Shuang Nan Area

The exploration in Shuang Nan area began in the late 1970s.In August 1978,we completed the first well,S 6 well,and produced daily oil 74.Ot and daily production gas 9333m3.The development of Shuangtaizi oil field has gone through three development stages:upper production,steady production and decreasing production.The production of old wells in double southern oil and gas field is decreasing year by year.It is necessary to find out the distribution law of residual oil and gas reservoir through detailed interpretation of structure and study the unbalance of productivity between oil wells.Through the study,the potential well and potential reservoir are found for oil test or retest,and the potential block is found to provide favorable geological basis for the oil field.In this paper,three dimensional seismic data,drilling,logging,logging,oil test,oil recovery and other data are used to carry out geological comprehensive research on formation,structure,deposition,reservoir and distribution of oil and gas water.At the same time,using core scanning,geochemistry and other logging techniques,phase controlled reservoir prediction is carried out in the target section of the study area.Reservoir prediction is carried out in Shuang Nan area by 3D seismic fine interpretation and 3D seismic reservoir prediction.On the basis of fine interpretation,this paper carries out re understanding of structural features,prediction of sand body distribution and comprehensive geological research,looking for favorable targets and putting forward the suggestion of well position.Through this study,we have made a series of achievements and recognition on the internal stratigraphic division and comparison,reservoir deposition,formation characteristics and completed multiple results drawings.Through the three-dimensional fine structure interpretation,,the distribution characteristics of the fracture system are clarified,the structural interpretation results conform to the regional tectonic geological depositional rules and water production can be reasonably explained.According to the analysis of structural interpretation results,the structural characteristics of Xinglongtai reservoir in this area show good inheritance.The oil and gas reservoirs are mainly the subaqueous distributary channel and the estuarine sand dam sedimentary facies belt in the fan delta front,looking for a favorable exploration site and deploying 3 wells for exploration and development.