skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method and apparatus for increasing well productivity

Abstract

This patent application discloses method and apparatus to cut an extended slot connecting a well to a substantial cross section of a desired producing formation whereby material can flow freely between the formation and the wellbore and at least partially overcome the flow limitations of low permeability formations without the environmental issues associated with hydraulic fracturing. It is further disclosed that the connection between said slot and the formation may be further enhanced by explosive or combustive processes that rapidly generate gas pressure within the large surface area of the slot, thereby changing its characteristics and forcing open additional fractures into the cross section of formation exposed to the slot. The method may significantly increase the recoverable percentage or natural gas from low permeability deposits such as shale and coal.

Inventors:
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1532008
Patent Number(s):
9732561
Application Number:
15/198,995
Assignee:
Carter, Jr., Ernest E., Sugar Land, TX (United States)
Patent Classifications (CPCs):
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
DOE Contract Number:  
AC26-07NT42677
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016-06-30
Country of Publication:
United States
Language:
English

Citation Formats

Carter, Jr., Ernest E. Method and apparatus for increasing well productivity. United States: N. p., 2017. Web.
Carter, Jr., Ernest E. Method and apparatus for increasing well productivity. United States.
Carter, Jr., Ernest E. Tue . "Method and apparatus for increasing well productivity". United States. https://www.osti.gov/servlets/purl/1532008.
@article{osti_1532008,
title = {Method and apparatus for increasing well productivity},
author = {Carter, Jr., Ernest E.},
abstractNote = {This patent application discloses method and apparatus to cut an extended slot connecting a well to a substantial cross section of a desired producing formation whereby material can flow freely between the formation and the wellbore and at least partially overcome the flow limitations of low permeability formations without the environmental issues associated with hydraulic fracturing. It is further disclosed that the connection between said slot and the formation may be further enhanced by explosive or combustive processes that rapidly generate gas pressure within the large surface area of the slot, thereby changing its characteristics and forcing open additional fractures into the cross section of formation exposed to the slot. The method may significantly increase the recoverable percentage or natural gas from low permeability deposits such as shale and coal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {8}
}

Patent:

Save / Share:

Works referenced in this record:

Hydra-jet slotting tool
patent, August 1982


Methods for heating with slots in hydrocarbon formations
patent, June 2014


Flexible wellbore broach
patent, December 2007


Geothermal heat mining and utilization
patent, May 1996


Method of stimulation of a subterranean formation
patent, September 1994


Method of forming subterranean barriers with molten wax
patent, March 2013


Self-decentralized hydra-jet tool
patent, May 1976


Oil and gas well stimulation
patent, September 1977


Treatment of underground beds
patent, April 1984


Wellbore rig with heat transfer loop apparatus
patent, October 2006


Keyseat wiper
patent, May 1982