Study On Effective Mobilization Of Channel Sand In Putaohua Reservoir Extension Area

In the Putaohua Reservoir Expansion border region development in that part of the reservoir layer belongs to the narrow channel sand body type. This type of reservoirs has the characteristics that sand body is thin, plane connectivity is poor, the distribution of oil and water is complex and no obvious main oil layer etc., which belongs to the abundance and low permeability reservoir. With Putaohua Reservoir Expansion border region of rolling development, in order to improve the yield and economic benefit of the whole oil field, this part of the narrow channel sand body reservoir layer development has provided on the agenda.In order to effectively solve in exploitation of grape flower formation process yield is low, the recovery rate is low a series of problems, there must be to narrow channel sand body reservoir development countermeasures for. In narrow channel sand reservoir development for a period of time, due to the geological conditions of the recovery degree is low, the existence of a large number of remaining oil, development of the late adjustment has also been difficulties in the development process of the reservoir. To carry out the basic well pattern optimization design and well pattern infilling adjustment research is the use of expansion in the border area of sheet sand types of sand body of the effective way and the inevitable choice.The in reference to the oilfield development experience, considering reservoir structure, technology and economic benefit factors based on, through establish three-dimensional geological model, using reservoir engineering method and numerical simulation method, of well pattern design, well line design direction, water injection development design research, establish a set of suitable for narrow channel sand reservoir and effective development of reasonable development pattern, combined with practical production of around the reservoir conditions and similar development zone, development index prediction and evaluation of economic benefit. Finally, it is concluded that the development of synchronous water injection by nine point method, which can make use of the difficulty of making use of the more difficult reservoir,can bring great economic benefits for the oil field. At the same time, through the method of reservoir engineering and numerical simulation method, the type and size of remaining oil analysis, summed up a set of suitable for narrow channel sand body reservoir reasonable well spacing encryption scheme design, for Putaohua reservoir effective development can provide theoretical and technical support, but also provide a reference for the development of similar block.