Research On Injecting Water Of Sheng 382 Block In Yushulin Oilfield

Sheng 382 block of Yushulin oilfield principal development fuyang reservoir, which is the typical of ultra-low permeability reservoir. At present, Sheng 382 block into the middle water-cut stage, the development contradiction obvious, needed water injection technology of ultra-low permeability reservoir. In this thesis, result of detailed reservoir description, trend development data, monitoring data, have been used to research the technology of adjustment of water injection. Following conclusions have been drawn.First, Sheng 382 block of Fuyang reservoir is low porosity and low permeability sandstone reservoir, By heterogeneity effect, waterflood development becomes worse, much-needed injection method change.Second, Sheng 382 block Fuyang reservoir, the large segment mudstone between the effective reservoir can be used as an effective barrier, effective barrier thickness limit is 1.5m.Third, according gray correlation method to determine the number of injection and production wells, shot open sandstone thickness, measure the transformation coefficient, position coefficient, injector spacing of the main factors affecting split factor, in order to establish water distribution formula to achieve single personalized water.Forth, Sheng 382 block cycle injection, the optimal implementation cycle is that stop water injection 4 months and injection 2 months; when the block moisture reach 40%,it is the best opportunity to use cycle injection.Fifth, through the fine adjustment of water injection in Yushulin oilfield fuyang class II reservoir can be achieved control of moisture content, and control descending goals.