Invention Grant
- Patent Title: Hydraulic control system for drilling systems
- Patent Title (中): 钻井系统液压控制系统
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Application No.: US12412156Application Date: 2009-03-26
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Publication No.: US08118113B2Publication Date: 2012-02-21
- Inventor: Stefan Wrede , Chrisof Kruse
- Applicant: Stefan Wrede , Chrisof Kruse
- Applicant Address: US UT South Jordan
- Assignee: Longyear TM, Inc.
- Current Assignee: Longyear TM, Inc.
- Current Assignee Address: US UT South Jordan
- Agency: Workman Nydegger
- Main IPC: E21B4/02
- IPC: E21B4/02

Abstract:
A hydraulic control system includes a first motor, a second motor, a pump operatively associated with the first motor, a first coupling valve operatively associated with the second motor, first parallel valves operatively associated with the second motor, and a first switching valve operatively associated with the first coupling valve and the first parallel valves. The first switching valve is configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state. While the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor while the first parallel valves are in the second parallel state, the output of the pump drives the second motor.
Public/Granted literature
- US20100243327A1 HYDRAULIC CONTROL SYSTEM FOR DRILLING SYSTEMS Public/Granted day:2010-09-30
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