Invention Grant
- Patent Title: Valve-controlled downhole motor
- Patent Title (中): 阀门控制井下电机
-
Application No.: US12323754Application Date: 2008-11-26
-
Publication No.: US08146679B2Publication Date: 2012-04-03
- Inventor: Geoff Downton
- Applicant: Geoff Downton
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Jeremy P. Welch
- Main IPC: E21B4/02
- IPC: E21B4/02 ; E21B4/20

Abstract:
The present invention relates to systems and methods for controlling downhole motors. One aspect of the invention provides a valve-controlled downhole motor including: a downhole motor and a spool valve. The downhole motor includes a sealed chamber having a first port and a second port, a stator received within the sealed chamber, and a rotor received within the stator. The spool valve includes a barrel and a spool received within the barrel. The barrel includes an inlet port, an exhaust port, a first feed port, a second feed port, a first return port, and a second return port. The inlet port is located in proximity to the first feed port and second port. The exhaust port is located in proximity to the first return port and the second return port. The spool includes a first gland and a second gland.
Public/Granted literature
- US20100126774A1 VALVE-CONTROLLED DOWNHOLE MOTOR Public/Granted day:2010-05-27
Information query