Shen24Fine Reservoir Description And Secondary Research To Develop Deployment

Shen24block in Damintun Sag, oil property for high condensate oil. After many years of water flooding, reservoir face plane of injection production well pattern is not perfect, the longitudinal uneven development of water absorption, the effect is not ideal, that seriously constraints on the development of the economic benefits. This article starts from the study about effect of sedimentary and reservoirs on the oil layer, analysis and descript control factors of reservoir types by regional tectonic and sedimentary reservoirs. Though the tectonic of separate layer water injection, conduct EOR experiments. Determine that Shen24block S3is the main exploitation segment, the main segment is divided into7oil groups and88small sand layers. The block development has two sets of fault, the faults of North East control hydrocarbon migration and accumulation, and the fault of East-West mainly play a role split. The main type of reservoir contains underwater distributor estuary of rivers and dams, leading-edge thin layer of sand, reservoir type is constructing-lithologic reservoir. At present the main water body area layer for S32â…¢ oil group, unused oil little, poor quality, the remaining oil distribution types include injection imperfect type, interlayer interference type and scattered type. The Shen24block into the flooding area, injection production perfecting District, extension area and unknown area, respectively, for the second development and deployment. The project plan design select favorable regulatory regions,fully consider the remaining oil-rich region and the injection incomplete system, we find the area that the residual oil saturation is higher than53%and the area that old well production can control but not perforation. As the old well perforating horizon adjustment the favorable areas,at the same time, we find out the oil saturation of the horizon of production well below46%and we choose the horizon that product more water to be the block horizon. Deployment of four new Wells in favorable areas,there are three water injection well and an oil production well.we redesign the injection-production parameters and development horizon of the old well, Mainly to block the high aquifer horizon, increase the production pressure, and the quantity of the drainage of oil Wells is improved. Stratified injection technology can effectively restore formation pressure, improve waterflood oil displacement efficiency, improved waterflooding reservoir effect..Based on the origin design of the program,we design three kind of program, and finally choose program three after compared. New well encryption and old Wells waterflooding is now the most effective means to maintain oil production. The tectonic of separate layer water injection can increase flooding sweep, enhanced oil recovery; Forecasting development effect of enhanced oil recovery2.42%, and satisfactory production and economic benefits can be achieved.