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在目前油田开采中,为了有效提高原油产量,采取井下分层注水的方式成为了原油开采的重要方法。为了保证分层注水取得预期效果,在分层注水工艺的选择上,要根据油井的实际地层情况以及原油性质选择合理的分层注水工艺,满足原油开采要求。目前来看,在采油分层注水工艺中,主要有偏心投捞分注、同心集成式分注、地面分注等几种主要形式。要想提高分层注水效果,就要对这三种分层注水工艺进行深入研究,了解分层注水工艺的适用范围和条件,重点解决层间矛盾问题,达到控制原油含水率的目的。由此可见,开展采油分层注水工艺研究是十分必要的,是保证采油取得积极效果的关键。
In the current oilfield exploitation, in order to effectively increase the production of crude oil, it has become an important method for the exploitation of crude oil by taking stratified water injection downhole. In order to ensure the desired effect of stratified water injection, the choice of stratified water injection process should be based on the actual formation conditions of the well and the nature of the crude oil to select a reasonable stratified water injection process to meet the requirements of crude oil exploitation. For the moment, in the process of oil production stratified waterflooding, there are several major forms of eccentric fishing, concentric integrated dispensing and ground dispensing. To improve the effect of stratified water injection, it is necessary to study these three stratified waterflooding techniques in depth to understand the application scope and conditions of stratified waterflooding technology, and focus on solving the problem of interlayer conflicts so as to achieve the purpose of controlling the moisture content of crude oil. Therefore, it is very necessary to carry out the research on stratified waterflooding technology of oil recovery, which is the key to ensure the positive effect of oil recovery.