AUTOMATIC STANDPIPE PRESSURE CONTROL IN DRILLING,申请号CA20112827935-传众专利搜索

AUTOMATIC STANDPIPE PRESSURE CONTROL IN DRILLING

申请公布号：CA2827935(A1)

申请号：CA20112827935

申请日期：2011.04.08

申请公布日期：2012.10.11

申请人：

HALLIBURTON ENERGY SERVICES, INC.

发明人：KNUDSEN, KJETIL ARNE;VARPE, FREDRIK

分类号：E21B21/08;E21B47/00;E21B47/06

主分类号：E21B21/08

摘要：A method of controlling standpipe pressure in a drilling operation can include comparing a measured standpipe pressure to a desired standpipe pressure, and automatically adjusting a choke in response to the comparing, thereby reducing a difference between the measured standpipe pressure and the desired standpipe pressure. A standpipe pressure control system for use in a drilling operation can include a controller which outputs an annulus pressure setpoint based on a comparison of a measured standpipe pressure to a desired standpipe pressure, and a choke which is automatically adjusted in response to the annulus pressure setpoint. A well system can include a standpipe line connected to a drill string in a wellbore, a sensor which measures pressure in the standpipe line, and a controller which outputs an annulus pressure setpoint based at least in part on a difference between the measured pressure and a desired standpipe pressure.