Biomass-enhanced natural gas from coal formations
US-10151185-B2 · Dec 11, 2018 · US
Coal bed methane recovery
US9920596B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9920596-B2 |
| Application number | US-94456910-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2010 |
| Priority date | Nov 23, 2009 |
| Publication date | Mar 20, 2018 |
| Grant date | Mar 20, 2018 |
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Abstract
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In-situ heating of coal facilitates desorption and diffusion of the methane for production of the methane through a wellbore. Water within fractures of the coal forms an electrical conduit through which current is passed. The heating relies at least in part on resistivity of the water, which thereby preheats the coal for the recovering of the methane.
First claim
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The invention claimed is: 1. A method comprising: inserting a first electrode in a first well and a second electrode in a second well each intersecting a subterranean formation containing coal, said first and second electrodes in electrical contact with the formation; passing electric current through water from the first well to the second well by applying a voltage across the first and second electrodes for resistive heating of the water within the formation; heating the wate…
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Fixed Constructions · mapped topic
- E21B43/006Primary
Fixed Constructions · mapped topic
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- What does patent US9920596B2 cover?
- In-situ heating of coal facilitates desorption and diffusion of the methane for production of the methane through a wellbore. Water within fractures of the coal forms an electrical conduit through which current is passed. The heating relies at least in part on resistivity of the water, which thereby preheats the coal for the recovering of the methane.
- Who is the assignee on this patent?
- Dong Shuxing, Wheeler Thomas J, Dreher Jr W Reid, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification E21B43/006. Mapped technology areas include Fixed Constructions.
- When was this patent published?
- Publication date Tue Mar 20 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).