| Qinjiatun oilfield is located in the south of Songliao Basin, in the eastern slope zone tenhouse broken, as the North East to large nose structure belt, fold area of nearly100squarekilometers, by many faults, forming a plurality of fault block trap, structural high short-axisanticline traps for independent. Reservoir developed in the upper Cretaceous QuantouFormation, lower Cretaceous Denglouku formation, complex small fault block reservoirs. TheSN106block is located in Qinjiatun oilfield in the west, is the North/South and East multiplefault to complex faulted nose structure. The main oil-bearing layer is Denglouku small â… andperiod of agricultural Xi reservoir belongs to low permeability reservoir, at normaltemperature and pressure. Since the block in1998October found that industrial oil flow,water-flooding development passed through more than10years, the current has entered thehigh water cut stage, reservoir conditions are extremely complex and changeful, plane andvertical heterogeneity increasing, the injected water in the plane to the producing welldirection and in the vertical to the tongue into high permeability layer dart the phenomenon isvery serious, resulting in stream channels appear between oil and water wells, invalidinjection caused, greatly reducing the water flooding effect.In order to clear the oil well corresponding relationship between contradiction, transitionlayer, to provide a basis for injection, water shutoff adjustment measures, the implementationof the tracer, Waterflood Front monitoring technology, can the structure, to strengthen theinjection-production adjustment, in order to improve the development effect, provide strongevidence for the the implementation of oil well corresponding relationship, on thecorresponding relationship between oil and water well, the fracture direction, speed of waterinjection flooding range, real-time monitoring, so as to effectively improve the watercondition, improve water flooding control, producing degree of reservoir formation,supplement the corresponding energy, enhance oil recovery, to improve the developmenteffect, stable oil has important significance. |
