摘要
克拉玛依油田部分油藏二次开发后,完善了注采井网,同时井距缩小后注水易沿高渗通道水淹水窜,导致注采调控难度大,平剖面动用不均。为确保二次开发后油藏稳产,科学合理开发油藏,需要进行改善开发效果技术研究。本文运用油藏工程及经验公式法对典型区块的压力系统和注采界限进行研究并确定目前开采阶段下最优的技术政策界限,指导油藏开发;并结合油藏地质特征,确定油藏典型区域合理开采技术政策界限,指导油藏分区域注采结构调整,结合分区、分层精细注水和深部调驱,提高剩余油动用,达到减缓递减,控制含水上升,提高采收率的目的。
The injection- production well pattern has been perfected after the second development of the reservoir of karamay oilfield,but at the same time,injection water is easily channeling along the high permeability channel because of the shrinking of the well spcing,which causes great trouble in Injection- production adjustment and inhomogeneity. In order to ensure the reservoir stable after the second development reservoir,the technology which improves the development effects need to be studied. In this paper,injection- production pressure system and injection- production limitation in typical block have been studied by the method of reservoir engineering and the empirical formula,by which determining the optimal technical policies under present period and guiding the development. And combined with the geological characteristics of the reservoir,it can determine the reasonable mining technology policy limitation of the the typical reservoir area,it also can guide the injection-production structure adjustment with of the subarea with the reservoir. Based on the division and layered fine water injection and deep profile correction,the oilfield can improve the recovery of residual oil. Ultimately,we can reach the purposes of slowing the decline,controlling water cut raising and enhanced oil recovery.
出处
《新疆石油天然气》
CAS
2014年第2期40-45,6,共6页
Xinjiang Oil & Gas
关键词
二次开发
注采政策界限
注采调整
采收率
second development
injection-production policy limitation
injection-production adjustment
recovery rate
