Dow Global Technolgoies LLC

Naoko Akiya

Harpreet Singh

Felipe A Donate

Paul Aaron Gillis

Zubin B Kuvadia

Abu Mokhtarul Hassan

Paul A Gillis

Edward D Daugs

Biplab Mukherjee

Wu Chen

Jorge H Pazmino

Defne Kayrak Talay

Abu M Hassan

The present invention relates to an in situ staged steam extraction method for removing petroleum products from a heavy oil or bitumen reservoir from subterranean locations. Specifically, each injection stage comprises a different steam composition. A steam composition may consist essentially of steam or may comprise one or more enhanced oil recovery agent.

Staged steam extraction of in situ bitumen

Oil sands may be surface mined and transported to a treatment area or may be treated directly by means of an in situ process of oil sand deposits that are located too deep for strip mining. A bitumen recovery process may be used to extract bitumen from oil sands. Specifically, the bitumen recover process involves a step of treating oil sands with a propylene oxide capped glycol ether described by the structure:RO&#x2014;(CHO)&#x2014;CHCH(CH)OHwherein R is a linear, branched, or cyclic alkyl, phenyl, alkyl phenyl group and n is 1 to 10.

Method of extracting bitumen from oil sands with a propylene oxide capped glycol

The present invention relates to an improved bitumen recovery process from oil sands. The oil sands may be surface mined and transported to a treatment area or may be treated directly by means of an in situ process of oil sand deposits that are located too deep for strip mining. Specifically, the present invention involves the step of treating oil sands with a glycol ether amine described by the following structure: R&#x2014;(OCH)&#x2014;NHor R&#x2014;(OCHCH(CH))&#x2014; NHwherein R is a Cto Calkyl group or a phenyl group and x and y independently are 1 to 3.

Method to extract bitumen from oil sands

A process includes: (a) injecting a steam composition into a subterranean location containing bitumen, the steam composition containing an alkylene glycol ether and steam, wherein the alkylene glycol ether is other than a glycol ether amine; and (b) recovering bitumen from the subterranean location to above the ground.

Enhanced steam extraction of in situ bitumen

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Missouri City, TX, United States of America

Naoko Akiya