Patent ID: 6082460
Filing Date: 2000-07-04
Classification: E21B

Abstract:
A wellhead assembly comprising:a fixed wellhead member having an upper supporting shoulder and a lower landing shoulder;a running tool having means for contacting said upper supporting shoulder for temporary landing of said running tool thereon;a tubing hanger releasably connected to said running tool for lowering within said wellhead member;first fluid coupling means between said tubing hanger and said running tool;second fluid coupling means between said tubing hanger and said wellhead member;said first fluid coupling means permitting the supply of fluid to said tubing hanger from said running tool while said tubing hanger is being lowered within said wellhead member and while said running tool is temporarily landed on said upper supporting shoulder;means permitting downward movement of said tubing hanger into landed position on said lower landing shoulder after said running tool is landed on said upper landing shoulder; said second fluid coupling means being activated when said tubing hanger is landed on said lower shoulder to provide the supply of fluid from said wellhead member to said tubing hanger; andmeans to block the supply of fluid from said running tool to said tubing hanger when said tubing hanger moves downward from the temporary landed position of said running tool on said upper supporting shoulder.