Invention Grant
- Patent Title: Method and apparatus for estimating down-hole process variables of gas lift system
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Application No.: US15093954Application Date: 2016-04-08
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Publication No.: US10370945B2Publication Date: 2019-08-06
- Inventor: Igor Boiko , Mohammad Luai Hammadih , Khalifa Hasan Al Hosani
- Applicant: Khalifa University of Science and Technology
- Applicant Address: AE Abu Dhabi
- Assignee: Khalifa University of Science and Technology
- Current Assignee: Khalifa University of Science and Technology
- Current Assignee Address: AE Abu Dhabi
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Main IPC: E21B43/12
- IPC: E21B43/12 ; G05B13/04 ; E21B47/00 ; E21B47/06
Abstract:
A method and apparatus for estimating a down-hole annulus pressure, and/or a down-hole tubing pressure, and/or a down-hole lift gas rate through a gas injection valve of gas lift system, which comprises at least one gas lift choke and at least one gas injection valve and at least one production choke. A state estimator is proposed to obtain the values of these down-hole process variables. The estimator contains a number of local estimators and an interpolation module.
Public/Granted literature
- US20170292351A1 METHOD AND APPARATUS FOR ESTIMATING DOWN-HOLE PROCESS VARIABLES OF GAS LIFT SYSTEM Public/Granted day:2017-10-12
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