Treatment fluids for reducing subterranean formation damage
US-2015361323-A1 · Dec 17, 2015 · US
Deactivation and activation of permeability modifiers for use in subterranean formation operations
US9840659B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9840659-B2 |
| Application number | US-201514896673-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 2, 2015 |
| Priority date | Feb 2, 2015 |
| Publication date | Dec 12, 2017 |
| Grant date | Dec 12, 2017 |
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Abstract
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Methods including deactivation and activation of permeability modifiers for use in subterranean formation operations. A first treatment fluid may be introduced into a subterranean formation having a first treatment zone having a first aqueous permeability value, the first treatment fluid comprising a first aqueous base fluid and a deactivated permeability modifier. The deactivated permeability modifier may be adsorbed onto a surface of the first treatment zone. A second treatment may thereafter be introduced into the subterranean formation, the second treatment fluid comprising a second aqueous base fluid and a cyclodextrin compound. The second treatment fluid may contact the deactivated permeability modifier to activate the permeability modifier by complexing the deactivating surfactant with the cyclodextrin compound, thereby forming an activated permeability modifier adsorbed onto the surface of the first treatment zone and reducing the aqueous permeability of the first treatment zone.
First claim
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The invention claimed is: 1. A method comprising: introducing a first treatment fluid comprising a deactivated permeability modifier in to a subterranean formation having a first treatment zone comprising a water-bearing section at pressures below a fracture gradient of the formation; adsorbing the deactivated permeability modifier from the first treatment fluid onto a surface of the first treatment zone in the subterranean formation, the first treatment zone having a first aque…
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Fixed Constructions · mapped topic
Chemistry & Metallurgy · mapped topic
- C09K8/602Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9840659B2 cover?
- Methods including deactivation and activation of permeability modifiers for use in subterranean formation operations. A first treatment fluid may be introduced into a subterranean formation having a first treatment zone having a first aqueous permeability value, the first treatment fluid comprising a first aqueous base fluid and a deactivated permeability modifier. The deactivated permeability …
- Who is the assignee on this patent?
- Halliburton Energy Services Inc
- What technology area does this patent fall under?
- Primary CPC classification C09K8/602. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 12 2017 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).