Research On Horizontal Seam Reservoir Fracture Extension Rule And Control Technology

The placanticline La-Sha-Xing oil fields of Daqing which have a poor thin layer is the main object of oilfield production capacity to replace in future,Years of oilfield development practice has proved that artificial fractures is given priority to with horizontal fracture,Previous knowledge for the horizontal fracture extended regularity is not enough,lack of corresponding fracture control technology,Difficult to guarantee the stimulation treatment pertinence and effectiveness,So to carry out the horizontal reservoir fracture extended and control technology research.The paper based on the originality terrestrial stress analysis,introducing the near well-bore stress analysis,Considering the influence of the casing,perforation,cement sheath,micro-fracture etc.,Research to form the diagnostic condition of occurrence horizontal fracture;adopted flowing-solid coupling method of nonlinear finite element to study the problem of hydraulic fracturing,set up fracture extended morphologic simulative prediction model;based on typical well numerical simulation of the whole process of fracturing,find out the geological and engineering affecting factors with the relationship of the horizontal fracture morphology,and through a large number of experiments and various fractures testing technology run for validation.Through the above research,finally summarizes the Sha-La-Xing oilfield horizontal fracture's extension law,established horizontal fracture reservoir fracturing effective control method,it can pass through the fracturing design and treatment parameters to adjust the control,optimize fracture remodeling of the volume,make measures of increase oil effect have greatly increased.