Invention Grant
US08087904B2 Hybrid hydraulic-electric RAM pumping unit with downstroke energy recovery
有权
具有下冲能量回收的混合液压电力RAM抽油机
- Patent Title: Hybrid hydraulic-electric RAM pumping unit with downstroke energy recovery
- Patent Title (中): 具有下冲能量回收的混合液压电力RAM抽油机
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Application No.: US12192022Application Date: 2008-08-14
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Publication No.: US08087904B2Publication Date: 2012-01-03
- Inventor: Larry D. Best
- Applicant: Larry D. Best
- Applicant Address: US TX Houston
- Assignee: Global Oilfield Services LLC
- Current Assignee: Global Oilfield Services LLC
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Main IPC: F04B49/00
- IPC: F04B49/00 ; F04B9/10 ; F01B3/02

Abstract:
A hybrid hydraulic-electric pumping unit (12) with downstroke energy recovery is disclosed which is operated in a conventional flow mode to supply hydraulic fluid to a hydraulic ram (26), and then is operated in a reverse flow mode to receive the hydraulic fluid from the hydraulic ram (26) and turn an electric motor (16) to generate electric power. A single hydraulic hose (48) connects the pump (18) to the hydraulic ram (26), and is used for both passing the hydraulic fluid from the pump (18) to the hydraulic ram (26) and from the ram (26) to the pump (18). The potential energy of the weight of sucker rods (10) lifted in operating the pumping unit (12) is recovered by operating the pump (18) and motor (16) with return of the hydraulic fluid from the hydraulic ram (26) through the pump (18), which turns the motor (16) to generate electric power.
Public/Granted literature
- US20090047153A1 HYBRID HYDRAULIC-ELECTRIC RAM PUMPING UNIT WITH DOWNSTROKE ENERGY RECOVERY Public/Granted day:2009-02-19
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