Research On The Development Adjustment Strategies Of Chang 6 In Bai 155 Area Of Huaqing Area

In the full understanding of geological characteristics and fluid properties in the study area,based on the comprehensive utilization of development geology,reservoir geology,reservoir engineering,reservoir physics and other disciplines theoretical knowledge as a guide for the reservoir development characteristics and laws of research,and evaluated the development adaptability policy from four areas included the well network systems,the water policy,the pressure systems and the development of indicators,and compared with the current development strategy,and then proposed appropriate policy adjustment techniques to improve water flooding effect,to ensure sustainable and efficient development of the reservoir.(1)The study area of Chang 6 reservoir located in the deep-semi-deep lake environment,it is a slump turbidite fan deposits;poor reservoir property,strong heterogeneity;weak velocity sensitivity,weak water sensitivity,weak-moderate acid sensitivity;wetting state totally exhibits partial lipophilic,the relative permeability of the water-oil is lower and the area of two-phase infiltration zone is relatively broader,seepage experiments showed that the permeability effects the main factors of water driving development.(2)The study area of Chang 6 gives priority to water injection development,the indivi-dual well production relatively low,the most oil wells are effective stability and effective water,curve between the water content of reservoir and the degree of recovery is convex.At present,the reservoir development has entered the stage of high water development,formation energy remains relative stability level,but relatively low,reservoir recovery is.relatively low,too.(3)Based on the reservoir development characteristics and lows of research,evaluated the development adaptability policy,proposed manufacturing parameters adjustment measures to rationalize according to worked out reasonable developing countermeasure for high-yield purposes.(4)According to the existing well nets,perfect the injection-production system and perform reasonable exploitation countermeasure,to solidify the stable foundation;optimize well nets order to improve the recovery;adjust injection and production to maintain a reasonable formation pressure;revise oil wells measures to make the degree of water drive better,so as to improve the effect of oilfield development.