Invention Grant
- Patent Title: Detection of position of a plunger in a well
- Patent Title (中): 检测井中柱塞的位置
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Application No.: US14039625Application Date: 2013-09-27
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Publication No.: US09534491B2Publication Date: 2017-01-03
- Inventor: John Philip Miller , David Lyle Wehrs
- Applicant: Rosemount Inc.
- Applicant Address: US MN Chanhassen
- Assignee: Rosemount Inc.
- Current Assignee: Rosemount Inc.
- Current Assignee Address: US MN Chanhassen
- Agency: Westman, Champlin & Koehler, P.A.
- Main IPC: E21B47/09
- IPC: E21B47/09 ; E21B47/06 ; E21B43/12 ; E21B47/00
Abstract:
A system for detecting when a plunger reaches a bottom of a well includes a pressure sensor configured to measure a pressure of the well and provide a measured pressure output. Derivative calculation circuitry calculates a derivative of the measured pressure output. Detection circuitry detects when the plunger reaches the bottom of the well based upon the calculated derivative.
Public/Granted literature
- US20150090445A1 Detection of Position of a Plunger in a Well Public/Granted day:2015-04-02
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