Fibrous lost circulation material (LCM)

US11279862B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-11279862-B2
Application numberUS-202017109738-A
CountryUS
Kind codeB2
Filing dateDec 2, 2020
Priority dateFeb 5, 2019
Publication dateMar 22, 2022
Grant dateMar 22, 2022

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A human hair lost circulation material (LCM) is provided. The human hair LCM includes human hairs obtained from sources of human hair waste such as barber shops, saloons, beauty parlors, and religious sites. The human hair LCM may include human hair having a diameter in the range of about 50 microns to about 150 microns and human hair having a length in the range of 2 millimeters (mm) to about 4 centimeters (cm). Methods of lost circulation control using and formation of a human hair LCM are also provided.

First claim

Opening claim text (preview).

What is claimed is: 1. An altered drilling fluid, comprising: a drilling fluid; and a lost circulation material (LCM), wherein the LCM comprises consists of a plurality of human hairs. 2. The altered drilling fluid of claim 1 , wherein the LCM comprises a concentration in the range of 15 pounds-per-barrel (ppb) to 30 ppb in the altered drilling fluid. 3. The altered drilling fluid of claim 1 , wherein each of the plurality of human hairs has a diameter in the range of 50 microns to 150 microns. 4. The altered drilling fluid of claim 1 , wherein each of the plurality of human hairs has a medullary index in the range of greater than 0 and less than 0.33. 5. The altered drilling fluid of claim 1 , wherein the drilling fluid comprises a water-based drilling fluid. 6. A method of forming a lost circulation material (LCM), comprising: collecting a plurality of human hairs from at least one waste source of human hairs; disinfecting a plurality of human hairs; washing the plurality of human hairs after the disinfecting; drying the plurality of human hairs after washing; sorting the plurality of human hairs into at least one group based on sizes of the plurality of human hairs to form the LCM. 7. The method of claim 6 , wherein the at least one group comprises three groups, the three groups comprising: a first group of the plurality of human hairs having respective lengths in the range of greater than zero and less than 10 millimeters (mm); a second group of the plurality of human hairs having respective lengths in the range of greater 10 mm and less than 20 mm; a third group of the plurality of human hairs having respective lengths in the range of greater 20 mm and less than 30 mm.

Assignees

Inventors

Classifications

  • C09K8/03Primary

    Specific additives for general use in well-drilling compositions · CPC title

  • Fiber-containing well treatment fluids · CPC title

  • characterised by their form or by the form of their components, e.g. encapsulated material · CPC title

  • C09K8/506Primary

    containing organic compounds · CPC title

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What does patent US11279862B2 cover?
A human hair lost circulation material (LCM) is provided. The human hair LCM includes human hairs obtained from sources of human hair waste such as barber shops, saloons, beauty parlors, and religious sites. The human hair LCM may include human hair having a diameter in the range of about 50 microns to about 150 microns and human hair having a length in the range of 2 millimeters (mm) to about …
Who is the assignee on this patent?
Saudi Arabian Oil Co
What technology area does this patent fall under?
Primary CPC classification C09K8/03. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Mar 22 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).