Acoustic proppant for fracture diagnostic
US-11061154-B2 · Jul 13, 2021 · US
Acoustic Proppant for Fracture Diagnostic
US2021318456A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021318456-A1 |
| Application number | US-202117354598-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 22, 2021 |
| Priority date | Jun 12, 2017 |
| Publication date | Oct 14, 2021 |
| Grant date | — |
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Abstract
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Methods of mapping a subterranean formation using imploding particles are described. In some cases, the particles contain a material that generated a gas which passes through a water-insoluble coating to create a void within the particle. In some aspects, the implosive particles have a coating that dissolves in the subterranean formation.
First claim
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1 - 10 . (canceled) 11 . A method of mapping a subterranean formation, comprising: injecting the particles through a wellbore into a subterranean formation; allowing the particles to implode to create acoustic signals; and detecting the acoustic signals; wherein the particles that are injected are hollow glass spheres that are coated with a coating that dissolves in water. 12 . The method of claim 11 wherein the coating comprises cellulose acetate, polyvinylalcohol, carboxymethyl cellulose, hydroxypropyl methylcellulose, or a water soluble epoxy resin. 13 . The method of any of claim 11 wherein the particles that are injected comprise a mixture of different coating thicknesses to create acoustic signals distributed over time. 14 . The method of claim 13 wherein the particles have at least a bimodal distribution of coating thicknesses with at least 20% of the particles (by volume as measured prior to injecting) having a thickness that is at least 25% different than the average thickness of at least 20% of other particles (by volume as measured prior to injecting) in a particle mixture. 15 . The method of claim 13 wherein the particles have at least a bimodal distribution of coating thicknesses with at least 20% of the particles (by volume as measured prior to injecting) having a thickness that is at least 50% different than the average thickness of at least 20% of other particles (by volume as measured prior to injecting) in a particle mixture.
Assignees
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Classifications
by deforming or displacing surfaces of enclosures · CPC title
reinforcing fractures by propping · CPC title
macromolecular compounds · CPC title
using explosives · CPC title
- G01V1/02Primary
Generating seismic energy {(G01V1/003 takes precedence)} · CPC title
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Frequently asked questions
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- What does patent US2021318456A1 cover?
- Methods of mapping a subterranean formation using imploding particles are described. In some cases, the particles contain a material that generated a gas which passes through a water-insoluble coating to create a void within the particle. In some aspects, the implosive particles have a coating that dissolves in the subterranean formation.
- Who is the assignee on this patent?
- Battelle Memorial Institute
- What technology area does this patent fall under?
- Primary CPC classification G01V1/02. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Oct 14 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).