公开(公告)号：EP1608839A2

公开(公告)日：2005-12-28

申请号：EP04714605.5

申请日：2004-02-25

申请人： The Research Factory, L.C. ,  Smith, David Randolph ,  Harkins, Gary O. ,  Shanley, Brent

发明人： SMITH, David, Randolph ,  HARKINS, Gary, O. ,  SHANLEY, Brent

IPC分类号： E21B1/00

CPC分类号： E21B33/068 ,  E21B23/02 ,  E21B33/04

摘要： A method and apparatus for inserting a small diameter continuous hydraulic conduit or capillary tube down a well bore is presented. The methods and apparatus allow either the injection of chemicals to enhance production of oil and gas, or to provide a conduit for production up through the small diameter tubing in marginal wells, into a hanger below a well valve to permit its removal from below the valveif the valve should be required to be closed and its reinsertion without pulling the tubing from the well bore.