The Study About The Residual Oil Distribution And Development Adjustment Of The Block Huan628

The Block Huan628 is a fault block which is located in the southwest of West Slope of West Sag in Liaohe Basin. The developed objective layers is DaLinghe reservoir, it is divided into 4 oil-water distributing systems of Da0,Daâ… ,Daâ…¡and Daâ…¡from top to bottom, and the depth of the reservoir is between 2143 to 2610 metres . There are 145 wells including 4 coring wells in this block. DaLinghe reservoir is turbidity current deposit, it is changing fast and the condition of the reservoir is very complex. With mid-porosity and low-permeability, the reservoir's penetrating power is low and the relativity of porocity and permeability is poor. It's average porosity is 23 percent, the permeability is 326×10^-3μm²,the area is 2.8 km²,the OIIP is 3780 thousand tons. It has stronger heterogeneity in vertical and its difference in properties is apparent. In short, the whole Huan 628 fault block reservoir is a typical complex faulted reservoir.The precondition of the study is collecting and disposing all kinds of static and dynamic data,at the basis of Fine Reservoir Description,the aim of the study is to finding region where remaining oil enriches,and than improve development effects.This paper has fromed a series of technology which combines foundation geologic study, sediment microfacies study, reservoir prediction, geology modeling and reservoir simulation.The technology is fiting for adjusting . The main parts of this dissertation are to take advantage of the dynamic analysis and numerical simulation to analyze the watering extent in the formations, further to find the remaining oil enriched zone; on the other hand.according with the potential conditions in formations and the problems in the development history, the aim is bringed forward and the adjusting case is made.The drilling data , logging data , analysing data of 145 wells in this block is colecting for Fine Reservoir Description of Block Huan628. Based on the 24 water wells'62 times absorbing materials data, logging data of 22 adjusting wells, and the production and dynamic monitoring data of 48 oil and water wells, the watering conditions and the residual oil distribution of each oil group in is analyzed by empirical formula ,dynamic analysis ,reservoir simulation and so on , and logical adjusting case is made too.