Date tree trunk-based fibrous loss circulation materials

Patent metadata

Field	Value
Publication number	US-10870787-B2
Application number	US-201916379420-A
Country	US
Kind code	B2
Filing date	Apr 9, 2019
Priority date	Aug 31, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

A date tree trunk-based lost circulation material (LCM) is provided. The date tree trunk LCM includes date tree trunk fibers produced from date tree trunks. The date tree trunks may be obtained from the date tree waste produced by the processing of date trees in the production of date fruits. The date tree trunk LCM may include fibers having lengths less than 8 millimeters (5 mm) and having an aspect ratio range of 10 to 15. Methods of lost circulation control using a date tree trunk LCM and manufacture of a date tree trunk LCM are also provided.

First claim

What is claimed is:

1. An altered drilling fluid, comprising:
a drilling fluid, wherein the drilling fluid comprises a gel-polymer mud or a volcanic ash-based mud; and
a lost circulation material (LCM), wherein the LCM comprises a plurality of date tree trunk fibers produced from date tree trunks.

2. The altered drilling fluid of claim 1 , wherein the plurality of date tree trunk fibers comprise a concentration of at least 8% by weight of the total weight (w/w %) of the altered drilling fluid.

3. The altered drilling fluid of claim 1 , wherein the plurality of date tree trunk fibers comprise a plurality of untreated date tree trunk fibers.

4. The altered drilling fluid of claim 1 , wherein each of the plurality of date tree trunk fibers has a length less than 8 millimeter (mm).

5. The altered drilling fluid of claim 1 , wherein each of plurality of date tree trunk fibers has an aspect ratio in the range of 10 to 15.

6. A method of forming a lost circulation material (LCM), comprising:
chopping a plurality of date tree trunks to produce a plurality of chopped date tree trunks;
washing the plurality of chopped date tree trunks using water;
grinding the chopped date tree trunks to produce a plurality of date tree trunk fibers, the LCM consisting of the date tree trunk fibers, wherein the plurality of date tree trunk fibers comprise a plurality of untreated date tree trunk fibers that are not introduced to an alkali, an acid, a bleaching or an oxidation agent.

7. The method of claim 6 , wherein each of the plurality of date tree trunk fibers has a length less than 8 millimeter (mm).

8. The method of claim 6 , wherein each of plurality of date tree trunk fibers has an aspect ratio in the range of 10 to 15.

9. A lost circulation material (LCM) composition, the composition consisting of:
a plurality of date tree trunk fibers produced from a date tree trunk, wherein the plurality of date tree trunk fibers comprise a plurality of untreated date tree trunk fibers that are not introduced to an alkali, an acid, a bleaching or an oxidation agent.

10. The LCM composition of claim 9 , wherein each of the plurality of date tree trunk fibers has a length less than 8 millimeter (mm).

11. The LCM composition of claim 9 , wherein each of plurality of date tree fibers has an aspect ratio in the range of 10 to 15.

Assignees

• Saudi Arabian Oil Co

Inventors

• Amanullah Md
• Ramasamy Jothibasu

Classifications

• C09K8/506

  containing organic compounds · CPC title

• C09K8/06

  Clay-free compositions (containing inorganic compounds only C09K8/05) · CPC title

• C09K8/516

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

• C09K8/145

  characterised by the composition of the clay · CPC title

• D21B1/063

  using grinding devices · CPC title