Research Of Qingpingchuan Oilfield Development Program Ranks Yuju Chang2Mining Area Water Injection

Yuju habitable zone on Qingpingchuan oilfield in2004put into development andproduction, the average single well liquid production early development of3.2t, the averagedaily oil production for0.442t, moisture content of86.18%. As of December2013, Yujuranking research and development area of approximately10.81km2, geological reserves of280.50×104t, within the region long two oil-bearing area there were374producing wells, thecurrent average daily production of single well fluid0.4t, the average single-well Nissan oil0.087t,78%water cut, oil production rate0.39%, the degree of recovery of recoverablereserves3.01%, the annual decline rate of7.4%.In this paper, oilfield Yuju habitable zone on Qingpingchuan basic geological data andproduction data as the basis to develop comprehensive geological engineering, reservoirengineering and development of dynamic studies provide some guidance for the UNQingpingchuan Yuju Chang2oil field waterflood study. The main conclusions of this paperare presented as follows:1. ranking Qingpingchuan oilfield Yuju Chang2segment as the main oil layer, accordingto the characteristics of the oil will be divided into the first of Chang2long, the second andthe third of Chang2three sub-segments, including oil-length the third of Chang2, length thesecond of Chang2major oil segment, oil range, basic lace, long21is also an important oilsegment, but the plane scattered, not contiguous.2. Yuju ranking regional tectonic background westward tilt monoclinic structure, localdevelopment-relief of nose structure, the length of two sedimentary facies of braided riversedimentary facies, sedimentary microfacies main distributary channel sand body overalldistribution direction is north east-southwest direction.3. The head of two segments reservoir rock types of feldspar in-fine sandstone, detritalfeldspar mainly within the middle of the reservoir has a strong heterogeneity between strongheterogeneity and plane heterogeneity. Weak performance speed-sensitive, sensitive Weak,weak acid sensitive medium, medium weak weak base-sensitive stress sensitivity. 4. Qingpingchuan oil reservoir section of Chang2elastic drive-dissolved gasdrive-based, has a normal temperature, reservoir formation water pressure system is normalCaCl2type.5. UN Qingpingchuan oilfield Yu Chang2oil group from top to bottom into a Threesections,the first, the second and the third of Chang2, should adopt a set of strata, a welldeveloped network, we recommend using a rectangular inverted nine wells networkdevelopment, reasonable row spacing74.5m-150m, reasonable well spacing for the225m-450m, injection well ratio should not exceed1:3.