Study About Technology Limits And Technology Policy Of Horizontal Wells In Low-permeability Reservoir

Oil, as the blood of modern industry, played a crucial role in promoting the development of the times. Horizontal well, as an emerging technology, has been rapid development in the world.most of Putaohua oil layers in the east of Daqing peripheral oilfields has been discovered are oil layers with extrodinary low reserves abundance, low permeability, extra thin thickness, there is no profit developed byvertical wells,we must resort to horizontal wells.This essay take Block Zhou 57 in Daqing oilfield to research horizontal well type,wether using horizontal well as injection well or not,horizontal well productivity,well pattern of this block. Not only can we perfected the use of horizontal wells to develop the theory of low permeability reservoir,but also has important use for reference and instruct sense in the horizontal well development of the same kinds of reservoirs.The result of this thesis contain:1. Comprehensive understood of horizontal well's development though extensive research;2. Get the limit of using horizontal well to develop oil layer of Putaohua through Analysis and arrange of existing data;3. Use numerical simulation method to calculate well suitable horizontal well type, orientation of horizontal well;4. Use orthogonal optimize design method combined with oil stimulation,optimize the horizontal well pattern.