压井套压和立压计算的统一模型

UNIFIED MODEL FOR CALCULATING CASING'S PRESSURE AND STAND PIPE'S PRESSURE IN KILL WELL

司钻法,工程师法和边循坏边加重法是现场常用的压井方法。本文根据流体力学基本原理,结合压井作业的工况,研究了压井过程中套压和立压的变化规律,得到了压井套压和手压计算的统一模型。它具有包容性,精确性和程序化的优点,不但便于现场使用,同时也为开发压井模拟器奠定了理论基础。

Driller's, waiting-and-weighting and circulating-and-weighting techniques are commonly used kill well methods in oil fields. On the basis of principles of fluid mechanics and conditions of kill well, the rules of casing's pressure and stand pipe's pressure are analyzed, and the unified model has been set up, which is of the advantages of compatability, accuracy and programing. The unified model is not only conveniently used in oil fields, but lays the theoretical foundations for kill well simulators as well.