Cavitation-based hydro-fracturing technique for geothermal reservoir stimulation
Abstract
A rotary shutter valve 500 is used for geothermal reservoir stimulation. The valve 500 includes a pressure chamber 520 for holding a working fluid (F) under pressure. A rotatable shutter 532 is turned with a powering device 544 to periodically align one or more windows 534 with one or more apertures 526 in a bulkhead 524. When aligned, the pressurized working fluid (F) flows through the bulkhead 524 and enters a pulse cavity 522, where it is discharged from the pulse cavity 522 as pressure waves 200. The pressure wave propagation 200 and eventual collapse of the bubbles 202 can be transmitted to a target rock surface 204 either in the form of a shock wave 206, or by micro jets 208, depending on the bubble-surface distance. Once cavitation at the rock face begins, fractures are initiated in the rock to create a network of micro-fissures for enhanced heat transfer.
- Inventors:
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1344498
- Patent Number(s):
- 9574431
- Application Number:
- 14/224,367
- Assignee:
- UT-Battelle, LLC
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
F - MECHANICAL ENGINEERING F03 - MACHINES OR ENGINES FOR LIQUIDS F03G - SPRING, WEIGHT, INERTIA OR LIKE MOTORS
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2014 Mar 25
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; 42 ENGINEERING; 15 GEOTHERMAL ENERGY
Citation Formats
Wang, Jy-An John, Wang, Hong, Ren, Fei, and Cox, Thomas S. Cavitation-based hydro-fracturing technique for geothermal reservoir stimulation. United States: N. p., 2017.
Web.
Wang, Jy-An John, Wang, Hong, Ren, Fei, & Cox, Thomas S. Cavitation-based hydro-fracturing technique for geothermal reservoir stimulation. United States.
Wang, Jy-An John, Wang, Hong, Ren, Fei, and Cox, Thomas S. Tue .
"Cavitation-based hydro-fracturing technique for geothermal reservoir stimulation". United States. https://www.osti.gov/servlets/purl/1344498.
@article{osti_1344498,
title = {Cavitation-based hydro-fracturing technique for geothermal reservoir stimulation},
author = {Wang, Jy-An John and Wang, Hong and Ren, Fei and Cox, Thomas S.},
abstractNote = {A rotary shutter valve 500 is used for geothermal reservoir stimulation. The valve 500 includes a pressure chamber 520 for holding a working fluid (F) under pressure. A rotatable shutter 532 is turned with a powering device 544 to periodically align one or more windows 534 with one or more apertures 526 in a bulkhead 524. When aligned, the pressurized working fluid (F) flows through the bulkhead 524 and enters a pulse cavity 522, where it is discharged from the pulse cavity 522 as pressure waves 200. The pressure wave propagation 200 and eventual collapse of the bubbles 202 can be transmitted to a target rock surface 204 either in the form of a shock wave 206, or by micro jets 208, depending on the bubble-surface distance. Once cavitation at the rock face begins, fractures are initiated in the rock to create a network of micro-fissures for enhanced heat transfer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {2}
}
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