射流泵井口掺水降回压技术及应用

Technique of Mixing Water at Injection Pump Wellhead to Decrease Back Pressure and Its Application

单井回压过高直接影响油井产量。目前国内多以建接转站形式降低井口回压 ,提高产量 ,但建接转站受一次性投资高、建设周期长并需实现油气分输等诸多因素制约。掺水单井采用射流泵降回压技术 ,依靠掺水来液的压力将井口来液吸入射流泵 ,使井口的回压保持在 0 0MPa左右 ,从而提高油井产量。射流泵油气混输技术完全抛弃了气、液同时加压的模式 ,根据气液不同的流性特点合理匹配 ,使用普通离心油泵给液相升压 ,然后利用高压液流为动力液吸入气体并升压 ,从而实现油气混输。

The injection pump oil gas mixed transferring technology totally asides the pattern that gas and liquid are pressed at the same time and according to the different flowing characteristics of gas and liquid resonably matching using common centrifugal pump to press the liquid phase and then using the high pressure fluid flow as dynamic fluid absorbing gas and boost its presure so the oil gas mixing transferring realized.