Hydrodynamic Regulation Approach Mechanism And Application To Pu Taohua Oil Field

When oilfield is in period of high or extra high water cut, facing overall water cut behavior, it is very difficult to advance the development of oil field appling traditional regulation way. Oil or wter wells can be through implemented the cycle of water injection, injection-production cycle, the production cycle, intermittent extraction, and other hydrodynamic adjustments, changeing the output of oil wells and water injection wells in the process, take full advantage of the flexibility energy and the capillary force in energy reservoir, the additional pressure drawdown and fluctuations of pressure causes penetration of different permeability zone,and low-permeability layer of unswept oil in the region was adopted out to improve Development results, improve ultimate recovery.So far, minesites text technological process of hydrodynamics adjustments are described in many literature,but correlate theory reseach is very little, especially,it is very difficult to obertain some important parameter for example pressure drop limit and so on. In this paper,different permeability zone crossflow mechanism was reseached by analysing the mechanism of hydrodynamic adjustment methods to raise the degree of recovery,taking into account saturation, permeability and wettability changes to channeling Flow impact. Carried out laboratory research of different permeability zone,and Hydrodynamics question of Pubei two block is studyed by numerical simulation technology, put in the way of certain pressure drop limit by analyse comparison between oil production rate and field pressure. rate of pressure drop is obtained in the diferent inject-product ratio, depressurization development present extract period is found. begin from June 2007, launch four hydrodynamic adjustments minesites text of cycle of water injection,injection-production cycle,the production cycle,and depressurization development in Pu-bei two blockreservoir.result show that hydrodynamic adjustments can improve absorption profile, expanding the swept volume, and attain goal of increase oil and decline water-cut, decline water of injection and pressure,energy saving, the from economical context, profit of measure is very much.