John P Tiernan

US Patent:

7073589, Jul 11, 2006

Filed:

Jan 22, 2003

Appl. No.:

10/348809

Inventors:

John P. Tiernan - Newnan GA, US
Richard S. Passamaneck - Golden CO, US

Assignee:

Propellant Fracturing & Stimulation, LLC - Peachtree City GA

International Classification:

E21B 43/263
F42D 3/04
F42B 3/04

US Classification:

1663082, 166 63, 1661775, 166299, 175 71, 102313, 102318, 102320

Abstract:

A system for fracturing wells uses a primary propellant charge to initially produce pressures within the well in excess of the maximum fracture extension pressure of the surrounding formation, but below that which would cause damage to the well. A supplemental propellant charge burns for a substantially longer period of time than the primary propellant charge, and thereby maintains pressures within the well in excess of the maximum fracture extension pressure for a significant period of time following completion of the primary propellant burn.

US Patent:

7409911, Aug 12, 2008

Filed:

Sep 8, 2005

Appl. No.:

11/221634

Inventors:

John P. Tiernan - Newnan GA, US
Richard S. Passamaneck - Golden CO, US

Assignee:

Propellant Fracturing & Stimulation, LLC - Peachtree City GA

International Classification:

F42D 1/04
E21B 43/26

US Classification:

102322, 102332, 1022756, 102289, 166271, 1663081

Abstract:

An apparatus for fracturing wells employs a propellant charge and an ignition cord wrapped around the outer surface of the propellant charge to rapidly ignite the outer surface of the propellant charge.

US Patent:

7487827, Feb 10, 2009

Filed:

Feb 17, 2006

Appl. No.:

11/357599

Inventors:

John P. Tiernan - Newnan GA, US

Assignee:

Propellant Fracturing & Stimulation, LLC - Peachtree City GA

International Classification:

E21B 43/263

US Classification:

166 63, 1663081

Abstract:

An apparatus for fracturing a well has a propellant charge held by a carrier, and upper and lower restrictor plugs secured to the carrier above and below the propellant charge, respectively. The restrictor plugs allow a restricted flow of combustion gases generated by the propellant charge to pass the restrictor plugs, but maintain sufficient pressure in the well between the restrictor plugs to fracture the formation surrounding the well.

US Patent:

8522863, Sep 3, 2013

Filed:

Apr 8, 2010

Appl. No.:

12/756695

Inventors:

John P. Tiernan - Newnan GA, US
Guy B. Spear - Marshall VA, US
Don Landis - Hampton GA, US

Assignee:

Propellant Fracturing & Stimulation, LLC - Peachtree City GA

International Classification:

E21B 29/02
E21B 43/263

US Classification:

166 63, 166299

Abstract:

A fracturing system for wells has a propellant charge having a known surface area for combustion, and a combustion rate as a function of pressure with lower combustion rates at lower pressures and rapidly increasing combustion rates at higher pressures separated by a knee in the combustion rate function. The propellant charge is initially sealed within a vessel as it is inserted into a well. The system also includes means for creating openings in the vessel on ignition of the propellant charge in the well, such that the openings have a known combined flow area selected to create a condition of choked flow of combustion gases from within the vessel and maintain pressures within the vessel below the knee in the combustion rate function.

US Patent:

20030155112, Aug 21, 2003

Filed:

Jan 10, 2003

Appl. No.:

10/340393

Inventors:

John Tiernan - Newnan GA, US
Richard Passamaneck - Golden CO, US
Lynn Frazier - Robstown TX, US
Dany Normand - Sharpsburg GA, US

International Classification:

E21B043/263

US Classification:

166/063000, 166/308000, 166/299000

Abstract:

A modular propellant assembly for fracturing wells has a propellant charge with a detonating cord extending along its length to ignite the propellant. Each propellant module also has end caps with male and female connectors that enable propellant modules to be connected in an end-to-end relationship to any desired length. These connectors align the ends of the detonating cords in adjacent propellant modules and are sealed with O-rings so that the detonating cords remains dry while submerged at high pressures. This enables the detonating cords to be ignited in series.

US Patent:

20060075890, Apr 13, 2006

Filed:

Oct 13, 2005

Appl. No.:

11/249667

Inventors:

John Tiernan - Newnan GA, US

International Classification:

F41F 5/00

US Classification:

089001150

Abstract:

An apparatus for fracturing wells employs a propellant charge with a metallic foil to rapidly ignite the surface of the propellant charge. The assembly can be covered with an protective coating to protect against fluids in the well bore.

US Patent:

20080264289, Oct 30, 2008

Filed:

Jul 9, 2008

Appl. No.:

12/169946

Inventors:

John P. Tiernan - Newnan GA, US
Richard S. Passamaneck - Golden CO, US

Assignee:

PROPELLANT FRACTURING & STIMULATION, LLC - Peachtree City GA

International Classification:

F42B 3/00
F42D 1/04

US Classification:

102322, 102332

Abstract:

An apparatus for fracturing wells employs a propellant charge and an ignition cord wrapped around the outer surface of the propellant charge to rapidly ignite the outer surface of the propellant charge.

US Patent:

20160015472, Jan 21, 2016

Filed:

Mar 14, 2014

Appl. No.:

14/776768

Inventors:

Aaron Matthew NOBLE - Newnan GA, US
John Patrick TIERNAN - Newnan GA, US
Lawrence Scott ARONSON - Peachtree City GA, US

International Classification:

A61B 19/00
A61B 17/28
A61B 17/06
A61B 17/3211
A61F 13/44
A61F 13/36

Abstract:

The present disclosure relates to a medical material or surgical sponge including an integral construction having a plurality of micro-particle taggants that are UV or radio wave detectable. The sponge includes a fibrous, nonwoven fabric containing entangled fibers arranged in an interconnecting patterned relationship in a plane of the fabric, and at least one UV or radio wave detectable element positioned interiorly of the fibrous nonwoven fabric in the plane. The fibers of the nonwoven fabric may be inter twined about the micro-particle taggants.