Structural Interpretation And Reservoir Prediction Of Oil And Gas Reservoirs Of Huangqiao Region

Huangqiao region Permian Qixia Basin gas reservoir is a large carbon dioxide gas reservoirs in North Jiangsu Yangtze region, in recent years, oil exploration in the Permian Longtan Formation has also made significant effect, thus, Huangqiao region has entered the carbon dioxide gas reservoir helping development and rolling exploration and evaluation phase of potential reservoir. To speed up the process of exploration and development oil and gas reservoirs, the project focuses on research and technology from two directions:structural interpretation and reservoir prediction, and has carried out a large number of experiments and research work in the data selection, optimization of interpretation technical, reservoir prediction of tight sandstone and slit-type holes limestone, integrated application of more data and multiple methods confirm each other. Research results have been applied to gas reserves re-operator and gas reservoir exploration and gas development plan in the Huangqiao region.Huangqiao after multiple tectonic movements formed structural barriers and breaking off the nose by two normal NEE faults. Using two-dimensional seismic data to determine the regional tectonic framework and three-dimensional seismic data to implement the key structural features ultimately find out the Huangqiao region Permian faults, structural form and trap characteristics, and re-launched the fault-horst and block division.Permian Qixia group is limestone reservoir of slit pore type, Longtan Formation is sandstone reservoir. The distribution of effective reservoir controls the distribution of oil and gas and directly affects the production of oil and gas. In this paper, combine attribute analysis, waveform study, discontinuity detection, seismic inversion, frequency detection and other means and ultimately found a suitable technology sequence to Huangqiao areas, and find out a bit of the effective reservoir distribution discipline, point out high quality of reservoir distribution in favor of oil and gas accumulation.Based on the above studies, the area of the carbon dioxide gas of Permian Qixia is 64km2,the gas reserves accounted for 203.82×108m3, the favorable exploration target 11.5km2. Predict that the area of oil reservoir in the Permian Longtan is 31.3km2, oil reserves is 1523.7×104t and propose to deploy an appraisal well. Summarizes the forming conditions of potential target of the Permian Longtan group and the N7 structure, and forecast oil reserves is 1433.3×104t. Proposed resume testing oil to N7 well to further expand the exploration results.