Countermeasures Of Oilfield Injection-production System Adjustment

This article mainly studies the influence of injection-production system on developmentissues of a block in daqing oilfield which has entered the high water cut period. From themining situation of the block, the development issues are especially prominent in the firsttime encryption adjustment layers and the second time encryption adjustment layers of Saertureservoir. There are six injection-production contradictions in the block. And the ratio of oiland water wells is high. It cannot meet the requirements of extra high water cut production.Though the data analysis, the numerical simulation, compiling and optimizing the scheme,predicting the effect,the block can proceed with reasonable optimization adjustment forinjection-production system adjustment.According to the fine geologic research results, the article studies seriously blockgeological conditions and reservoir sedimentary characteristics, analyzes the influence factorsof reservoir conditions on development block and well network condition; through studyingthe major contradiction development course and development block in the process, confirmsthe potential direction of injection-production system adjustment for each layer series; inaccordance with the goal and the principle of injection-production system adjustment,compiles5sets of schemes for the encryption adjustment layers and two encryptionadjustment layers of Saertu reservoir; using numerical multidisciplinary research results andsimulation technology to optimize the scheme, then identifies appropriate plan forinjection-production system adjustment.So it can achieve the perfect pattern, improve thesingle sand body of injection production corresponding rate, increase the oil displacementdirection; improve the capacity for liquid, improve well fluid, and slow down the productiondecline rate, control the rate of water cut increasing; adjust the pressure of the system, controlthe casing damage; increase recoverable reserves, improve the water drive recoveryefficiency.