Halliburton Energy Services, Inc.

Pratiksha Shivaji Meher

Larry Steven Eoff

Amit Chandrakant Agrawal

Ravikant S Belakshe

Sairam Eluru

Chetan Prakash

Sandeep Kumar Borra

Jason Maxey

Sunita Sameer Kadam

V Ramireddy Devarapalli

Ramesh Uppuluri

Giselle Braganza

Kim Teng Yeo

Nurpasha Jahangir Hipparge

Described herein is a low-temperature catalyst and method of use for causing an exothermic reaction in a low temperature environment. The mixture can include sodium nitrite, an ammonium-based compound, and an oxidizer and can be injected into a fluid flow path. The fluid flow path can be a pipeline, a flowline, a wellbore, or a subterranean formation. The mixture can cause an exothermic reaction in the fluid flow path and remove, using the exothermic reaction, a damaging material from the fluid flow path.

Catalyst for exothermic reaction in a wellbore

Described herein is a combination of a catalyst and an activator and method of use for causing an exothermic reaction in a low temperature environment. The mixture can include sodium nitrite, an ammonium-based compound, a catalyst that comprises an oxidizer, and an activator and can be injected into a fluid flow path. The fluid flow path can be a pipeline, a flowline, a wellbore, or a subterranean formation. The mixture can cause an exothermic reaction in the fluid flow path and remove, using the exothermic reaction, a damaging material from the fluid flow path.

Catalyst and activator for exothermic reaction

The present disclosure is directed to an aqueous gellable composition that includes water; 10 to 45 composition wt. % of a crosslinkable water-soluble polymer including at least one functional group selected from the group of carboxylic acid and carboxylic acid derivative; 1 to 10 composition wt. % of an organic or inorganic crosslinking agent for the crosslinkable water-soluble polymer; 10 to 40 composition wt. % of a polyurethane polymer; and 0.1 to 5 composition wt. % of a natural polymer. The organic crosslinking agent includes at least one compound from the group of: polyalkyleneimines, polyalkylene polyamines, phenolic compounds combined with formaldehyde, and hydroquinone combined with hexamethylenetetramine. Also, the inorganic crosslinking agent includes at least one metal compound M, wherein M is from the group of: aluminum(III), chromium(III), iron(III), zirconium(III), and any mixture thereof.

Aqueous gellable composition and pipeline pigs obtained therefrom

Methods and system for using salting out inhibitors in subterranean formations are provided. In some embodiments, the methods comprise introducing a treatment fluid comprising an aqueous base fluid, a salting out inhibitor, a gelling agent, and one or more salts into at least a portion of a subterranean formation, wherein the salting out inhibitor is selected from the group consisting of: an oligomer comprising one or more quaternary ammonium cations, a polymer comprising one or more quaternary ammonium cations, a source of one or more phosphate anions, and any combination thereof.

Salting out inhibitors for use in treatment fluids

A breaker composition comprising (i) a first acid precursor, (ii) a second acid precursor and (iii) an aqueous fluid wherein the first acid precursor has an effective operating temperature of from about 15&#xb0; C. to about 120&#xb0; C. and the second acid precursor has an effective operating temperature of from about 30&#xb0; C. to about 180&#xb0; C.

Filter cake removal compositions and methods of making and using same

Well treatments that use modified biopolymers for diversion, conformance, fluid loss control, and/or other well treatments, including a method of providing conformance, fluid loss control, or diversion in a subterranean formation, may include providing a treatment fluid including a base fluid and hydrogel particles which may include modified biopolymers that are crosslinked, the modified biopolymers may include a biopolymer backbone and side chains derived from synthetic monomers; and introducing the treatment fluid into a subterranean formation penetrated by a wellbore.

Modified biopolymers for diversion, conformance, and fluid loss control

Methods, compositions, and systems that use hydrogels of graft polymers for diversion of acidic treatment fluids in subterranean formations. A method for acid diversion may comprise: applying a first acidizing treatment to a first treatment zone of a subterranean formation; introducing a hydrogel to the first treatment zone, wherein the hydrogel comprises a graft polymer that is crosslinked; and applying a second acidizing treatment to the subterranean formation, wherein the hydrogel diverts the second acidizing treatment to a second treatment zone.

Growing community of inventors

Pune, India

Pratiksha Shivaji Meher