E.i. Dupont De Nemours and Company

Other

Steven Alan Mestemacher

Laurence Waino McKeen

Robert B Fish, Jr

Pidatala K Mohan

Kimberly Dawn Farnsworth

W Douglas Obal

Robert B Fish

Rolando Umali Pagilagan

Marvin M Martens

Olivier Rozant

Adam J Van Der Lelij

Angela Lee Vandeponseele

Heinrich F Maurer

A method of hydraulically fracturing a subterranean formation is provided. The method comprises generating a primary fracture using a fracturing fluid. The method further comprises extending the primary fracture and/or creating micro fractures about the primary fracture by initiating a chemical reaction such as an exothermic reaction at about the primary fracture. In one embodiment, the fracturing fluid is used to convey one of the reactive components participating in the chemical reaction.

Method for fracturing subterranean rock

Disclosed is a process for reducing the deposition of asphaltenes, paraffin wax, or inorganic scale in an oil well pipe by providing a system of pipes that convey any flowable medium, such as oil and gas. More particularly the system of pipes is provided with different coatings or linings for the interior and exterior surfaces of such pipes, depending on the environment in which the pipes are used. The pipes may be coated with different materials, which may be of different thicknesses, with various configurations of coatings or linings. Such coating may be on the interior and/or exterior of the pipes.

System of pipes for use in oil wells

A siphon tube having a polymeric material into which at least one continuous reinforcing agent is embedded, and wherein the at least one reinforcing agent runs substantially the length of the siphon tube. The polymer material can be one or more polymers selected from one or more high density polyethylenes, one or more polyamides, and one or more fluoropolymers.

Reinforced polymeric siphon tubes

The present invention relates to a pipe, especially an oil pipe, having a lining comprising a fluoropolymer adhered to its interior surface and a lining formed on its exterior surface. The interior and/or exterior lining may comprise a primer layer comprising a fluoropolymer, and preferably a perfluoropolymer and an overcoat or a preformed film adhered to the primer layer. Either the overcoat or the preformed liner also comprises a fluoropolymer, and preferably a perfluoropolymer. The surface of the lining facing the flowable media, such as oil, may be a pure perfluoropolymer to provide a particularly good non-stick surface for the oil.

Coated pipes for harsh environments

Marine umbilicals are provided comprising polyamide compositions having good hydrolysis resistance and that may optionally contain plasticizer.

Marine umbilical comprising hydrolysis resistant polyamides

A process for producing plasticized polyamide blends containing additives such as tougheners, reinforcing agents, and/or filler. High average molecular weight plasticized blends containing additives may be made using the process of the invention. Pipes and tubing may be made from the blends prepared using the process of the invention.

Process for efficiently producing highly plasticized polyamide blends

A pipe or liner for use in the oil and gas industry that comprises a melt-mixed bend of polyamide and grafted fluoropolymer having polar functionality where the grafted fluoropolymer having polar functionality exists as a discontinuous phase that is dispersed in a polyamide matrix. The pipe or liner has enhanced resistance to the permeation of hydrocarbons relative to polyethylene. A further embodiment is fuel lines that comprise a melt-mixed bland of polyamide and a grafted fluoropolymer having polar functionality.

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Parkersburg, WV, United States of America

Steven Alan Mestemacher