E.i. Dupont De Nemours and Company

Dupont Safety & Construction, Inc.

Lisa C Bates

Hari Babu Sunkara

Richard P Marek

Hyun Sung Lim

Peter Andrin

Simon Frisk

Basil El-Borno

A method for recovering and treating hydrocarbon fluids using a hydraulic fracturing process wherein a fluid stream containing liquid or gaseous hydrocarbon species or both, produced water, suspended solids, and dissolved contaminants is recovered from a well. Hydrocarbon species are separated from the fluid stream to produce a second fluid stream comprising liquid water, which is then directed to a filter medium and essentially all of the second fluid stream passes through the medium to produce a permeate stream and a filter cake, and the filter cake is separated from the medium and disposed of separately.

Method for recovering hydrocarbon fluids using a hydraulic fracturing process

Insulation fluids comprising polytrimethylene ether glycol esters are provided. The insulation fluids can be used in electrical apparatuses.

Electrical insulation fluids for use in electrical apparatus

An insulated power cable contains a multi-strand cable of a plurality of bundles of uninsulated wires, and electrical insulation sheathing the cable, the electrical insulation having a thickness of from 0.0625 to 0.5 inches (0.16 to 1.3 centimeters) and having a plurality of layers of spirally-wrapped, creped tape, the tape having at least 50 percent by weight of an aramid material, and a density of from 0.1 to 0.5 grams per cubic centimeter prior to being creped.

Insulated power cable

This invention relates to a transformer containing an insulated power cable including a multi-strand cable of a plurality of bundles of uninsulated wires, and electrical insulation sheathing the cable, the electrical insulation having a thickness of from 0.0625 to 0.5 inches (0.16 to 1.3 centimeters) and containing a plurality of layers of spirally-wrapped, creped tape, the tape being including at least 50 percent by weight of an aramid material, the tape having a density of from 0.1 to 0.5 grams per cubic centimeter prior to being creped.

Growing community of inventors

Chester, VA, United States of America

Lisa C Bates