Research On The Ground Device Of Pulsed Waterflooding

In the development of oil field water injection,due to the geological characteristics and reservoir characteristics,the development of water flooding is more and more difficult,and the cost is higher and higher,which affects the efficient development of oil and gas fields.Low frequency pulse stimulation technology is a new EOR method,by applying vibration energy to the reservoir,the propagation of vibration wave in the strata,the reservoir porous medium and fluid properties to produce a variety of physical and chemical changes,so as to improve the reservoir seepage condition,remove reservoir blockage and dredge oil passage,improve water flooding the sweep efficiency,achieve oil production increase,water injection,and the results show low frequency pulse wave can be enhanced with proper water flooding effect,reduce residual oil saturation,improving water flooding recovery.This paper analyzes the underground and ground pulse mode,focuses on the research of pulse water injection device.At the same time,ground gas storage type hydraulic generator and preliminary design of ground pulse generator for ground pulse,according to the comparison of two kinds of pulse generator,hydraulic type ground pulse generator is suitable for ground pulse injection.At the same time,the transmission model of wave in water injection pipeline application pulse,analyzes the influencing factors of pulse transmission;application of pulse attenuation pulse in the pipeline transmission process,analyzes the influencing factors of pulse decay;fluid flow model with vibration boundary conditions,and analyzes the main factors influencing the pulse injection effect.Understanding and suggestions obtained has the reference value to the design and implementation of ground pulse water injection device.