断块油田注水井压力降落曲线的应用及注水效果分析  

Application of Pressure Drop Curve of Water Injection Well in Fault Block Oilf ield and Analysis of Water Injection Effect

作　　者：李宝刚 王海峰 王一帆 唐磊 闫雪晖 LI Bao-gang;WANG Hai-feng;WANG Yi-fan;TANG Lei;YAN Xue-hui(CNOOC Energy Technology&Services Limited Drilling&Production Branch,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452

出　　处：《化工管理》2023年第8期8-10,共3页Chemical Engineering Management

摘　　要：地层压力是油田开采中主要参数之一,已有的推算断块油田注水井地层压力的技术方法不断发展,但均存在一定的局限性。因此,文章在建立地层压力理论模型的基础上,推算适用断块油田应用压力降落曲线计算地层压力的近似公式。理论和实践证明,此公式是切实可靠的,它被称为“末端斜率法”,并进一步阐述其注水特征为低渗透是注水小或根本注不进去的主要原因,渗透率高低是影响注入量的主要因素。文章为应用注水井压力降落曲线,研究注水井试井方法、改善注采关系、分析注水效果提供了依据。Formation pressure is one of the main parameters in oilfield production.Existing technical methods for estimating formation pressure of water injection wells in fault block oilfields have been continuously developed,but they all have certain limitations.Therefore,based on the establishment of the formation pressure theoretical model,this essay calculated the approximate formula for the application of the pressure drop curve in the fault block oil field to calculate the formation pressure.Theory and practice have proved that this formula is practical and reliable.It is called the“End Slope Method”,and further elaborated that low permeability water injection characteristic is the main reason why the water injection is small or cannot be injected at all,and the permeability is the main factor that affects the injection volume.It provides a basis for applying the pressure drop curve of water injection wells,studying water injection well testing methods,improving the relationship between injection and production,and analyzing water injection effects.

关 键 词：压力降落曲线 末端斜率法 地层压力 注水效果 断块油田 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]