DRILLING FLUID, DRILLING METHOD, AND ADDITIVE FOR DRILLING FLUID

Title:

DRILLING FLUID, DRILLING METHOD, AND ADDITIVE FOR DRILLING FLUID

Document Type and Number:

WIPO Patent Application WO/2022/118964

Kind Code:

A1

Abstract:

The present invention is a drilling fluid containing water, a biodegradable fiber, and a thickener, wherein the thickener contains water-absorbent silicate, and the fiber length of the biodegradable fiber is 5.0-50 mm.

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Inventors:

NAGANAWA SHIGEMI
MUKAI RYUTARO

Application Number:

PCT/JP2021/044520

Publication Date:

June 09, 2022

Filing Date:

December 03, 2021

Export Citation:

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Assignee:

UNIV AKITA (JP)
KANEKA CORP (JP)

International Classes:

C09K8/20; C09K8/14; C09K8/22; E21B21/00

Domestic Patent References:

WO2020246541A1

2020-12-10

Foreign References:

US20180057729A1	2018-03-01
JP2017071673A	2017-04-13
US20160108713A1	2016-04-21

Attorney, Agent or Firm:

ARCO PATENT & TRADEMARK ATTORNEYS (JP)

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