The Study On Water Drive Development Adjustment Measure Of TaZhong 4 Oil Field

This article in view of TaZhong 4 oil field geological situations, reserve and production ratio is far lower than stable production limit of reserve and production ratio, the oil field output quickly depletion, in the current maintenance stable production possible small situation, in the foundation on development effect appraisal, conducts the research in view of the remaining oil, knew the the remaining oil of TZ4 oil field mainly concentrates in 1, 2, 3 subzones of pebbled sandstone section, the remaining oil reserves below 4 subzones only small area distribute in the TZ402 sub-area structure high spot as well as the TZ422 sub-area, below 4 subzones of CIII oil group in TZ401 block dig potentialities is small, 1, 2, 3 subzones has certain potential of pebbled sandstone section,which are the important target stratumaccording to the model already established by petrel software carried on the historical fitting, through the historical fitting which indicated established the primitive geological model coincidence rate was very high.In the development effect appraisal and the remaining oil distribution research foundation, subdivide the layer series of developmentand carry on the development adjustment,The well placement principle in the geology knew which consideration at the remaining oil distribution condition in present as well as the single well remaining oil reserves control degree then carries on the well placement, uses the irrigation way - well pattern restructuring - old well substitution,choose the best plan, finally gives the recommendation plan.Through Numerical simulation to every oil group then choose the best plan we know:The 1, 2, 3 subzones of pebbled sandstone section in TZ402 block CIII oil group, using the vertical well adopt circularity add point inject water development and carry on the adjustment effect which is the best. Recommendation use "8 inject 17exploitation" vertical well injection adjustment schema;the CIII block below 4 subzones use the horizontal well select the failure type development method to adjustment effect is the best, Recommendation use interlocks the well(5) placement along the axis department to adjust the plan; the 1 subzones of pebbled sandstone section of CIII oil group recommendation use the current well net and the after adjustment well and then carry on adjustment and dig;TZ422 block CIII oil group use the injection-production pattern which make vertical wel and horizontal well Union ,the adjustment effect is very good. recommendation adjustment well pattern increases 4 development wells in the present foundation, three vertical shafts, a horizontal well,two injection and two exploration, The new well gives dual attention to the CI main force reservoir sand trundle exploration development function. below 4 subzones of TZ401 block CIII oil group dig potential is small, 1,2,3 subzones of pebbled sandstone section has certain potential,which are the main adjustment goal level, recommendation whole use horizontal well well pattern selects the failure type development method. Adjustment plan 8 well, in which designs 6 new well, use 2 old well...