Iosif Hriscu

6896061, May 24, 2005

Apr 2, 2002

10/116572

Iosif J. Hriscu - Duncan OK, US
Don S. Folds - Duncan OK, US
Gregory W. Vargus - Duncan OK, US
Thomas W. Hawkins - Marlow OK, US
John T. Brandell - Duncan OK, US

Halliburton Energy Services, Inc. - Duncan OK

E21B043/12
E21B033/124

166313, 166119, 166120, 166387, 166191

A device and a method are provided for the hydraulic fracturing of multiple zones in a well bore. A stinger carries a plurality of packers into a well bore. Each packer is separably connected to each adjacent packer. As each packer is sequentially secured in the well bore, the stinger is withdrawn from the secured packer and the process is repeated as the remaining packers are sequentially secured and separated.

7337852, Mar 4, 2008

May 19, 2005

11/133839

Kevin R. Manke - Marlow OK, US
Iosif J. Hriscu - Duncan OK, US
Matthew T. Howell - Duncan OK, US

Halliburton Energy Services, Inc. - Duncan OK

E21B 23/00
E21B 31/00

166381, 1662426, 166301

A run-in and retrieval device for a downhole tool comprises a first set of lugs disposed on a first component of the device connected to a tool string, and a second set of lugs disposed on a second component of the device connected to the downhole tool, wherein the first set of lugs interact with the second set of lugs in a connected position. A method for running at least one downhole tool into a well bore comprises forming a releasable connection between an overshot connected to a tool string and a mandrel connected to the at least one downhole tool, running the at least one downhole tool into the well bore via the tool string, manipulating the at least one downhole tool in the well bore; and, rotating the overshot less than 360 degrees with respect to the mandrel to release the connection therebetween.

7405998, Jul 29, 2008

Jun 1, 2005

11/142864

Earl D. Webb - Wilson OK, US
Iosif J. Hriscu - Duncan OK, US
Perry Courville - Houston TX, US
Robert Pipkin - Marlow OK, US

Halliburton Energy Services, Inc. - Duncan OK

E21B 47/18

367 84, 166249, 166263, 166104, 1661776, 175106, 175107

Apparatuses and methods for generating fluid pressure pulses are disclosed. An example apparatus may include a chamber that can collect fluid and an upstream ported disc coupled to a downstream end of the chamber. The upstream ported disc may rotate about a central axis. The upstream ported disc includes an upstream eccentric port that rotates about the central axis as the upstream ported disc rotates. The example apparatus may include a downstream ported disc coupled to a downstream end of the upstream ported disc such that the downstream ported disc remains substantially rotationally fixed relative to the upstream ported disc. The downstream ported disc includes a downstream eccentric port that may align with the upstream eccentric port to form a passageway for fluid to exit from the chamber to outside of the apparatus, at some time in a rotation cycle of the upstream ported disc.

7886842, Feb 15, 2011

Dec 3, 2008

12/327600

Robert Howard - Duncan OK, US
Robert Pipkin - Marlow OK, US
Iosif Hriscu - Duncan OK, US

Halliburton Energy Services Inc. - Duncan OK

E21B 43/119
E21B 43/116
E21B 43/11
E21B 47/00

175 451, 175 456, 166 55, 1662552

A wellbore servicing apparatus, comprising a first mandrel movable longitudinally along a central axis and rotatable about the central axis, an orienting member configured to selectively interfere with movement of the first mandrel along the central axis, and a second mandrel connected to the first mandrel and configured to rotate about the central axis when the first mandrel rotates about the central axis. A method of orienting a wellbore servicing tool, comprising connecting an orienting tool to the wellbore servicing tool, identifying a predetermined direction, increasing a pressure within the orienting tool, rotating a portion of the orienting tool in response to the increase in pressure within the orienting tool, and rotating the wellbore servicing tool in response to the rotating of the portion of the orienting tool.

8276676, Oct 2, 2012

Feb 26, 2010

12/713256

Iosif Joseph Hriscu - Duncan OK, US
Michael Brent Bailey - Duncan OK, US
Muhammad Asif Ehtesham - Duncan OK, US
Robert Howard - Duncan OK, US
Robert Lee Pipkin - Marlow OK, US

Halliburton Energy Services Inc. - Duncan OK

E21B 19/00

166386, 166 854, 1663328, 1662422

Embodiments of the hybrid tool string include coiled tubing and jointed tubing, as well as a means typically located at the connection of the coiled and jointed tubing for sealing the fluid flowpath through the bore of the hybrid tool string. Embodiments of the hybrid tool string may use a pressure-activated valve tool attached in series between the coiled tubing and the jointed tubing, which allows for sealing of the bore by application of pressure. Embodiments of the pressure-activated valve tool may use a flapper in conjunction with a sleeve to seal the bore. The novel hybrid tool string may be used to service a well.

20090120633, May 14, 2009

Nov 13, 2007

11/938933

Earl Webb - Duncan OK, US
Iosif Hriscu - Duncan OK, US
James Tucker - Duncan OK, US
Gary Wilcox - Jackson MI, US

E21B 43/25

166249

Methods for cleaning or stimulating a well include providing an isolation device, providing a penetration device, isolating a zone, and penetrating a portion of the formation utilizing the penetration device. Isolating and penetrating may occur in a single trip into the well. The isolation device may include one or more packers. The penetration device may be a pulsating/oscillating hydrajet that introduces fluid pressure waves into the formation.

58031774, Sep 8, 1998

Dec 11, 1996

8/760095

Iosif J. Hriscu - Duncan OK
Donald W. Winslow - Duncan OK

Halliburton Energy Services - Duncan OK

E21B 2306
E21B 3408
E21B 4312

1663051

The present invention provides a tool and methods of placing a treatment fluid in a subterranean formation penetrated by a well bore by way of selected perforations extending from casing cemented in the well bore into the formation. The fluid placement tool includes a fluid flow passageway extending therethrough, at least one resilient self expandable cup type packer attached thereto and a valve disposed in the fluid flow passageway which closes the passageway when a closing plug is dropped into the tool. The placement tool is capable of releasing the cup type packer whereby it provides a seal between the tool and the casing when a first predetermined fluid pressure is applied to the tool after a closing plug is dropped therein and opening the fluid flow passageway whereby the treatment fluid is discharged from the tool below the packer when the fluid pressure is increased to a second predetermined fluid pressure. Methods of using the tool are also provided.

20170198562, Jul 13, 2017

Nov 30, 2015

15/039800

- Houston TX, US
Kevin Scott Harive - Houston TX, US
Thomas Earl Burky - Mansfield TX, US
Christopher Thaddeous Linsky - Marlow OK, US
Iosif Hriscu - Duncan OK, US

Halliburton Energy Services, Inc. - Houston TX

E21B 43/295

A system and a method for underground gasification comprising a downhole ignition device. The downhole ignition device may comprise a connection housing at a first end of the downhole ignition device. The connection housing may comprise an igniter and a first fire mix. The downhole ignition device may further comprise a body coupled to the connection housing. The body may comprise pyrotechnic modules arranged in series and additional first fire mix. A cap may be disposed at a second end of the connection housing. Additionally, the downhole ignition device may comprise a supply line and a recovery system. A method for igniting an underground energy source may comprise positioning a downhole ignition device adjacent an underground energy source in a wellbore, igniting a first fire mix in the downhole ignition device, and igniting a series of pyrotechnic modules arranged in the downhole ignition device.