Waterflood control system for maximizing total oil recovery
Abstract
A control system and method for determining optimal fluid injection pressure is based upon a model of a growing hydrofracture due to waterflood injection pressure. This model is used to develop a control system optimizing the injection pressure by using a prescribed injection goal coupled with the historical times, pressures, and volume of injected fluid at a single well. In this control method, the historical data is used to derive two major flow components: the transitional component, where cumulative injection volume is scaled as the square root of time, and a steady-state breakthrough component, which scales linearly with respect to time. These components provide diagnostic information and allow for the prevention of rapid fracture growth and associated massive water break through that is an important part of a successful waterflood, thereby extending the life of both injection and associated production wells in waterflood secondary oil recovery operations.
- Inventors:
- Issue Date:
- Research Org.:
- Univ. of California, Oakland, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1175383
- Patent Number(s):
- 6904366
- Application Number:
- 10/115,766
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
- DOE Contract Number:
- AC03-76SF00098
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM
Citation Formats
Patzek, Tadeusz Wiktor, Silin, Dimitriy Borisovic, and De, Asoke Kumar. Waterflood control system for maximizing total oil recovery. United States: N. p., 2005.
Web.
Patzek, Tadeusz Wiktor, Silin, Dimitriy Borisovic, & De, Asoke Kumar. Waterflood control system for maximizing total oil recovery. United States.
Patzek, Tadeusz Wiktor, Silin, Dimitriy Borisovic, and De, Asoke Kumar. Tue .
"Waterflood control system for maximizing total oil recovery". United States. https://www.osti.gov/servlets/purl/1175383.
@article{osti_1175383,
title = {Waterflood control system for maximizing total oil recovery},
author = {Patzek, Tadeusz Wiktor and Silin, Dimitriy Borisovic and De, Asoke Kumar},
abstractNote = {A control system and method for determining optimal fluid injection pressure is based upon a model of a growing hydrofracture due to waterflood injection pressure. This model is used to develop a control system optimizing the injection pressure by using a prescribed injection goal coupled with the historical times, pressures, and volume of injected fluid at a single well. In this control method, the historical data is used to derive two major flow components: the transitional component, where cumulative injection volume is scaled as the square root of time, and a steady-state breakthrough component, which scales linearly with respect to time. These components provide diagnostic information and allow for the prevention of rapid fracture growth and associated massive water break through that is an important part of a successful waterflood, thereby extending the life of both injection and associated production wells in waterflood secondary oil recovery operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {6}
}
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