计算关井地层破裂压力允许值的新方法  

A New Method for Calculating Permissible Value of Fracture Pressure in Formation During Closing Wells

作　　者：王相磊[1] 李庆生[1] 李青云[1] 梁玉平[1] 范志勇[2] 

机构地区：[1]中原石油勘探局钻井二公司 [2]中原油田分公司技术监督中心

出　　处：《断块油气田》2002年第1期70-72,共3页Fault-Block Oil & Gas Field

摘　　要：目前钻井系统中使用的关井地层破裂压力允许值计算方法存在缺点 ,考虑各种影响因素及其它条件 ,根据“U”形管原理、压力平衡方程和气体状态方程 ,推出关井地层破裂压力允许值计算的新方法。现场应用结果表明 ,该方法计算精度高 ,简单实用 ,应用范围较广 。As existing disadvantages in many calculating methods used in drilling system to calculate available value of formation breakdown pressure during shutting in wells,are analyzed and demonstrated.Various influence factors and other conditions are considered.Based on the U tube principle,equation of pressure equilibrium and equation of gas state,a new kind of method are introduced.Field application shows that the new method is higher accuracy,simple and easy to be used,a wider scope to be applied,and can also create good conditions to be operated in the further successfully.

关 键 词：关井 地层破裂压力 允许值 关井立压 关井套压 计算 应用 石油钻井系统 

分 类 号：TE249[石油与天然气工程—油气井工程]