注水井井口压降曲线在粘土调剖中的应用

APPLICATIONS OF SURFACE PRESSURE DRAWDOWN CURVES OF INJECTION WELLS IN PROFILE MODIFICATION USING CLAY

粘土调剖剂是一种廉价的调剖剂，可用注水井井口压降曲线判断注水井能否使用这种调剖剂。此外，注水井井口压降曲线还可用于决定粘土调剖剂的粘土用量和封堵有效期，并可对粘土调剖剂的不同用法进行对比。在使用注水井井口压降曲线解决上述问题时，本文引入了压力指数、用量指数和滞后系数等概念。

The clay is a kins of cheap profile regulation agent. The surface pressure drawdown crue of injec tion well can be used to judge this agent is suitable or not,to determine the clay consumption as well as the Period of validity,and to contrast the different applying technologys of profile regulation agent. The concepts of pressure index,consumption index and hysteresis coefficient are introduced in the applications of drawdown curves