Evaluation Of Remaining Oil Potentialities And Study On Redevelopment Measures For Ⅲ5-6Member In Jinglou Ⅰ Area

Ⅲ5-6Member in Jinglou Ⅰ Area is the fault controlled anticline with shallow layer,medium thickness and high viscous oil. Because of the active edge water, the degree ofreserve recovery, the heat utilization, the oil/gas ratio and the producing reserves are low. Inorder to tap the reserves potentialities in the edge water influx area and to increase theutilization ratio of the resources, it is the significant issue that the thermal production iscontinuous and stable.Based on screening the data of Ⅲ5-6Member in Jinglou Ⅰ Area required by thegeological model, it establishes the accurate model of the Ⅲ5-6Member in Jinglou Ⅰ Areausing the Petrel software as well as matches the reserves. It makes the accurate geologicalmodel coarsened, which has seven oil-bearing horizons in the longitudinal and is applied tothe CMG numerical simulation software. Choosing the suitable filtration theory under thedifferent oil/water temperature, the relationship of viscosity and temperature of heavy oil, thethermal property of rock and fluid and so on, it matches the production performance history,revising the result compared with the monitoring performance data to make the model close tothe reservoir.Using reservoir method and the monitoring data of remaining oil, it analyses thedistribution of remaining oil in the vertical. Using the method of numerical simulation and theperformance analysis, it studies the distribution law of the remaining oil in the plain,establishing the relationship of the sedimentary microfacies and the distribution law of theremaining oil, of which the remaining oil of main channel sand is up to73percent. Based onthe studies, it divides the remaining oil into four types, including the remaining oiluncontrolled by well pattern, remaining oil in the non-essential reservoir, remaining oil invirtue of the perforation avoidance in the horizon, and the remaining oil in the edge waterarea.For the different type of remaining oil, it gives the tapping measures respectively,including liquid displacement in the water zone, optimization of the parameters ofinjection-production, well pattern thickening, perforations adding, regulating the steaminjection profile and back production. Making using of the numerical simulation, it forecaststhe performances of the tapping measures, making the recovery ratio rise as much as (2~3)%,whose development effects is better.