Dense Sandstone Reservoir Fracturing Technology Research And Application

For dense oil reservoir,because of the reservoir permeability is very small,the conventional way of fracturing can only form a single seam fracturing Lord,no matter how long the length of crack,how high is the flow conductivity due to supply oil to the fracture reservoir matrix ability is poorer,increase production effect is poor,even if the bond is higher,stable production period is short,difficult to achieve economic development.The traditional view is that,as long as fracturing fracture parameters and the height of pattern matching,and necessary complement formation energy and good production system,single well production can be increased,can achieve the effective development of resources.Resources due to its dense reservoir percolation ability is poor,however,the water injection development is difficult,hard work,the characteristics of single well oil recovery is low,must break the bondage of traditional view from fracturing process itself.To this end,the paper puts forward the suitable for dense oil reservoir resources "seam fracturing in the net technology,explored the mechanism of" joint network fracturing technology,applicable conditions,implementation process and method of application.Aiming at the limitation of the dense oil reservoir by fracturing,the paper has carried out the joint network fracturing technology research,in order to increase the reservoir seepage area,achieve the goal of improving single well production capacity.In this paper,the principle of "seam fracturing in the net technology and analyzes the reservoir condition;Put forward the "joint network fracturing technology process design train of thought,and the realizing methods of net seam fracturing technology;The joint network fracturing technology success in HTZ oilfield pilot test and achieved good results;Subsequent in HTZ oilfield and expanding test of DA oilfield,the obvious advantages compared with conventional fracturing production,"the objective of the research for the future" seam fracturing in the net the perfection of technology with the large-scale application of laid a solid theoretical basis.