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为了解决油稠造成的单井回压高、光杆缓下及光杆下不去的现象,保证油井正常生产,对于稠油开发井使用了套管连续加药装置解决不连续加药存在的问题,达到降粘开采的目的。通过套管向生产井井底注入表面活性物质,在井下与原油相混合后产生乳化或分散作用,原油以小油珠的形式分散在水溶液中,形成比较稳定的O/W型乳状液体系。在流动过程中变原油之间内摩擦力为水之间的内摩擦力,因而流动阻力大大降低,达到了降粘开采的目的。
In order to solve the problem of high single-well backpressure caused by oil thickening, slow down of polished rod and unwinding of polished rod, and to ensure the normal production of oil well, a casing continuous dosing device is used for heavy oil development wells to solve the problem of discontinuous dosing. Achieve the purpose of viscosity reduction mining. Injecting the surface active material into the bottom hole of the production well through casing to emulsify or disperse the oil mixed with the crude oil in the well. The crude oil disperses in the form of small oil droplets to form a relatively stable O / W emulsion system. In the process of changing the internal friction between crude oil is the internal friction between the water, so the flow resistance is greatly reduced, reaching the purpose of viscosity-lowering mining.