|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||166/65R ; 166/105 ; 166/68 ; 417/404|
|발명자 / 주소|
|인용정보||피인용 횟수 : 32 인용 특허 : 5|
An improved system for lifting formation fluid from a well bore to a surface facility is disclosed. Rigid production tubing and sucker rods are replaced by flexible, composite production tubing in which a production conduit, power conductors, signal conductors, hydraulic/pneumatic conduits and a load-bearing tension member are enclosed by a flexible, tubular covering. The load-bearing member of the flexible production tubing is mechanically coupled to a submersible pump. The pump includes driving means such as an electrical motor, hydraulic motor or pneu...
A pumping system for producing formation fluid from a well comprising, in combination: a submersible pump having a power fluid reservoir, a housing enclosing a hydraulic power cylinder and a production cylinder; a hydraulic power pump mounted in said housing having an inlet port in communication with the power fluid reservoir and a discharge port; a shuttle valve having an inlet port connected to the pump discharge port and an outlet port connected in fluid communication with said power cylinder for alternately pressurizing and relieving the power cylind...