Halliburton Energy Services, Inc.

Leldon Mark Farabee

Jim Basuki Surjaatmadja

Billy Wilson McDaniel

David M Adams

Jorn Tore Giskemo

Ronald M Willett

Loyd Eddie East

Loyd E East, Jr

Ruben A Alba

John M Warren, Jr

Lloyd E East

Billy W Mcdaniel

A casing cutting tool including a top mandrel operatively coupled to a conveyance; a first retractable wedge operatively coupled to the top mandrel; a jetting tool operatively coupled to the retractable wedge, the retractable wedge thereby interposing the top mandrel and the jetting tool, wherein the jetting tool has one or more jetting nozzles arranged thereon; and a bottom terminal operatively coupled to the jetting tool, the jetting tool thereby interposing the retractable wedge and the bottom terminal.

Removal of casing slats by cutting casing collars

Embodiments herein include a casing cutting tool comprising a top mandrel operatively coupled to a conveyance; a first retractable wedge operatively coupled to the top mandrel; a jetting tool operatively coupled to the retractable wedge, the retractable wedge thereby interposing the top mandrel and the jetting tool, wherein the jetting tool has one or more jetting nozzles arranged thereon; and a bottom terminal operatively coupled to the jetting tool, the jetting tool thereby interposing the retractable wedge and the bottom terminal.

The present invention is directed to a method of isolating hydrajet stimulated zones from subsequent well operations. The method includes the step of drilling a wellbore into the subterranean formation of interest. Next, the wellbore may or may not be cased depending upon a number of factors including the nature and structure of the subterranean formation. Next, the casing, if one is installed, and wellbore are perforated using a high pressure fluid being ejected from a hydrajetting tool. A first zone of the subterranean formation is then fractured and stimulated. Next, the first zone is temporarily plugged or partially sealed by installing an isolation fluid into the wellbore adjacent to the one or more fractures and/or in the openings thereof, so that subsequent zones can be fractured and additional well operations can be performed.

Methods of isolating hydrajet stimulated zones

An example of a method includes providing a hydrajetting tool in a well bore in a formation; injecting a fluid through the tool into a first region of the formation at a velocity sufficient to form one or more perforation tunnels; maintaining the flow of fluid into the perforation tunnels at a pressure greater than the fracture closure pressure, so as to create one or more fractures in the first region; plugging at least partially the fractures with an isolation fluid; injecting a fluid through the hydrajetting tool into a second region of the formation at a velocity sufficient to form one or more perforation tunnels in the second region; and maintaining the flow of fluid into the perforation tunnels in the second region at a pressure greater than the fracture closure pressure, so as to create one or more fractures in the second region.

Methods of fracturing sensitive formations

The present invention is directed to a method of increasing hydrocarbon production in an existing well in a hydrocarbon reservoir. The method includes the steps of forming a substantially horizontal transverse fractured wellbore that intersects the existing well and injecting a fluid remote from the existing well so as to form a fluid front that sweeps the hydrocarbons into the horizontal transverse fractured wellbore. Successive fractures can be sealed to control propagation of the fluid front and delay infiltration of the fluid into the production.

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Houston, TX, United States of America

Leldon Mark Farabee