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Method to extract bitumen from oil sands using aromatic amines

An aromatic amine and bitumen technology, applied in the field of recycling bitumen, can solve the problems of restricting the reuse of process water and not being a pH reducer.

Inactive Publication Date: 2019-03-01
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon dioxide is not a strong acid and therefore not an effective pH lowering agent
On the other hand, the use of mineral acids creates unwanted salts in the process water and can severely limit the reuse of process water

Method used

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  • Method to extract bitumen from oil sands using aromatic amines
  • Method to extract bitumen from oil sands using aromatic amines
  • Method to extract bitumen from oil sands using aromatic amines

Examples

Experimental program
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Effect test

example

[0057] Parallel Pressure Reactor (PPR) testing.

[0058] For Examples 1 to 19, approximately 0.05 g of aromatic amine, 0.5 g of oil sands, and 5 mL of water were placed in a 12 mL glass vial. The vial was then loosely capped and subsequently heated in a convection oven at 120°C for 45 minutes. The oven was then turned off and the samples were allowed to cool to room temperature. After cooling, the samples were placed on a white background and photographed. Example 20 was performed in a similar manner but without the aromatic amine.

[0059] For Examples 21-28, mixtures were prepared as described above, but tested at 200°C and 150 psi. These reaction conditions represent the minimum steam conditions required to move bitumen in an oilfield reservoir using steam assisted gravity drainage (SAGD) applications. 0.05 g of aromatic amine was added to a 15 mL glass insert along with 0.5 g of oil sands and 5 mL of deionized (DI) water, which was then transferred and placed in a PPR ...

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Abstract

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 an aromatic amine.

Description

technical field [0001] This invention relates to the recovery of bitumen from oil sands. More specifically, the present invention is an improved method of recovering bitumen from oil sands, either by surface mining or in situ recovery. The improvement is the use of aromatic amines as extraction aids in the water and / or steam used in the bitumen recovery process. Background technique [0002] Oil sands deposits are found all over the world, but most prominently in Canada, Venezuela and the United States. These oil sands contain large deposits of heavy oil, commonly known as bitumen. Bitumen from these oil sands can be extracted and refined into synthetic oils or directly into petroleum products. The difficulty with bitumen is that it is often very viscous and sometimes more solid than liquid. As a result, bitumen generally does not flow like less viscous or light crude oils. [0003] Due to the viscous nature of bitumen, it cannot be produced from wells drilled into oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/04E21B43/24
CPCC10G1/04C10G1/045C10G1/047C10G2300/4037C10G2300/802E21B43/2408
Inventor M·L·图尔齐因斯基N·秋也B·慕克吉C·A·威瑟姆
Owner DOW GLOBAL TECH LLC