公开(公告)号：US20020153138A1

公开(公告)日：2002-10-24

申请号：US09839521

申请日：2001-04-20

Applicant: PHILLIPS PETROLEUM COMPANY

Inventor： Thomas E. Ferg

IPC: E21B033/13 ,  E21B034/10

CPC classification number: E21B21/10 ,  E21B33/13 ,  E21B2034/005

Abstract: A downhole cementing system employing a cement choke within the casing to reduce the downward velocity of cement through the casing and thereby inhibit formation fracturing caused by vibration of the casing.

Abstract translation: 一种在壳体内采用水泥扼流圈的井下固井系统，以减少水泥通过套管的向下速度，从而抑制壳体振动引起的地层压裂。