Praxair Technology, Inc.

William J Scharmach

Richard M Kelly

Walter L Renz

Gregory Joseph Panuccio

Matthew Thomas

Mohammad Abdul-Aziz Rashad

Daniel Dalton

Yi Ma Lenhert

Gregory J Pannucio

The present invention relates to a method of preparing a gas coolant for the direct cooling of a unit operation under a fixed heat load from its normal operating temperature (e.g., 300° F. and above) to a lower temperature (e.g., below 100° F.) in order to allow for maintenance or other non-routine work to be carried out in said unit operation.

Method for controlling a recycle gas stream utilizing an ejector for the cooling of a unit operation

The present invention concerns a method of weakening and removal of coke or carbonaceous material which deposits as a result of thermal cracking of hydrocarbons on the inner walls of coils, piping, tubing, and in general, hydrocarbon processing equipment.

Method for weakening and removing coke and carbonaceous deposits

The present disclosure is directed to a composition and method of fracturing a formation penetrated by a well-bore. The composition and method comprises providing a fracturing fluid that is carbon dioxide (CO) with at least one friction reducing polymer that is a fluoropolymer dissolved in the COat a concentration of about 0.001 to 0.4 weight percent.

Fracturing fluid composition and method utilizing same

The present invention concerns a feedback control method for adjusting the proppant concentration in a fracturing fluid that is utilized in stimulation of an underground formation.

Method of controlling static pressure in the reservoir of a liquefied gas and proppant blender

A system that provides for the measurement and control of proppant concentration in a liquefied gas fluid stream utilizing a non-nuclear optical detection device such as a near-infrared (NIR), visible (Vis), and ultraviolet (UV) photometer/nephelometer to be used in the fracture treatment of subterranean hydrocarbon formations.

Photometer/nephelometer device and method of using to determine proppant concentration

The present disclosure is directed to a composition and method of fracturing a formation penetrated by a well-bore. The composition and method comprises providing a fracturing fluid that is liquefied carbon dioxide (LCO) with at least one friction reducing polymer that is a polysiloxane dissolved in the LCOat a concentration of about 0.001 to 1.0 weight percent, and a first at least one co-solvent, and optionally a second at least one co-solvent that has a closed cup flash point greater than the first at least one co-solvent, in order to enable dissolution of the polymer in order to effect friction reduction.

A system and method is described that provides for proppant to be blended into a liquefied gas fluid stream with an eductor to produce a proppant slurry which is effectively controlled by the use of a control valve system and associated PLC controller. This system ensures allowing for operation of the system at various static pressures and keeps the proppant completely fluidized throughout the fracing operation.

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Grand Island, NY, United States of America

William J Scharmach