砂岩油藏低渗区块由于油层敏感性强和注入水质等工艺不配套等多因素的影响,注水井欠注和超压注水的问题一直影响着地层能量的补充和产量的稳定,通过开展酸化(压)降压增注技术优化研究与应用实践,形成了降压增注工艺的技术配套,实现了增注和注水能力的增长。 Due to many factors such as the sensitivity of the reservoir and the impermeability of the injection water quality, the problem of under-injection and overpressure injection in sandstone reservoirs has affected the recharge of the formation energy and the stability of the production. Through the acidification (Pressure) step-down injection technology to optimize the research and application of practice, formed a step-down injection technology supporting technology to achieve the injection and water injection capacity growth.