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Methods of fluid loss control, diversion, and sealing using deformable particulates
US8936086B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936086-B2 |
| Application number | US-201113252349-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2011 |
| Priority date | Oct 4, 2011 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. The polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a T g above about −15° C. When the polymeric particulates are placed into a subterranean formation having a temperature above about 65° C. they transform from rigid form to malleable form and are able to provide fluid loss, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a well bore. The malleable particulates then degrade over time in the subterranean formation.
First claim
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What is claimed is: 1. A method comprising: providing a treatment fluid that comprises a base fluid and polymeric particulates; wherein the polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a glass transition temperature (T g ) above about −15° C.; wherein the plasticizer is about 0.25% to about 40% by weight of the polymeric particulate; introducing the treatment fluid into a subterranean formation penetrated by a wellbore and having a bott…
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- What does patent US8936086B2 cover?
- Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. The polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a T g above about −15° C. When the polymeric particulates are placed into a subterranean f…
- Who is the assignee on this patent?
- Liang Feng, Todd Bradley L, Welton Thomas D, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C09K8/035. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 20 2015 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).