| 摘要 |
<p>A method and an apparatus for a dynamic mudcap drilling and well control comprises of a tubular body (185) disposable in a well casing (180) forming an outer annulus (155) there between and an inner annulus (150) formable between the body and a drill string (190) disposed therein. The apparatus further includes a sealing member (110) to seal the inner annulus at a location above a lower end of the tubular body and a pressure control member (150) disposable in the inner annulus at a location above the lower end of the tubular body. In another embodiment, the assembly uses two rotating control heads (RCH, RBOP) (110, 115), one at the top of the wellhead assembly in a conventional manner and a specially designed downhole unit. Thus, creating dual barriers. Finally, the assembly provides a method for allowing the well to produce hydrocarbons while tripping the drill string.</p> |
