Loss Circulation Compositions (LCM) Having Portland Cement Clinker

Patent metadata

Field	Value
Publication number	US-2019153293-A1
Application number	US-201916259579-A
Country	US
Kind code	A1
Filing date	Jan 28, 2019
Priority date	Jul 20, 2017
Publication date	May 23, 2019
Grant date	—

Abstract

Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may include Portland cement clinker, Portland cement, a carrier fluid, and an inorganic consolidation activator. Another Portland cement clinker LCM may include Portland cement clinker and a crosslinked fluid, such as a polyuronide crosslinked via calcium ions or a polysaccharide crosslinked via divinyl sulfone. Yet another Portland cement clinker LCM may include Portland cement clinker and polymer fibers or particulate glass. Methods of lost circulation control using a Portland cement clinker LCM are also provided.

First claim

What is claimed is:

1 . A lost circulation material (LCM) composition, comprising:
Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles; cement; a carrier fluid; a plurality of polymer fibers; and an inorganic consolidation activator selected to consolidate the clinker in the composition to form a plug when introduced into a lost circulation zone.

2 . The LCM composition of claim 1 , wherein the carrier fluid comprises an aqueous carrier fluid that includes at least one of diutan gum, xanthan gum, and welan gum.

3 . The LCM composition of claim 1 , wherein the Portland cement clinker comprises ASTM International Type I cement clinker, ASTM International Type V cement clinker, API Class A cement clinker, or API Class G cement clinker.

4 . The LCM composition of claim 1 , wherein the cement comprises API Class G cement.

5 . The LCM composition of claim 1 , wherein the inorganic consolidation activator comprises a silicate salt.

6 . The LCM composition of claim 1 , wherein the inorganic consolidation activator comprises at least one of sodium silicate, calcium aluminate, calcium chloride, sodium aluminate, and potassium silicate.

7 . The LCM composition of claim 1 , wherein the inorganic consolidation activator comprises an amount in the range of about 1.0 weight of the total weight (w/w %) to about 3.0 w/w %.

8 . The LCM composition of claim 1 , wherein the weight ratio of carrier fluid to clinker is 1:1.

9 . The LCM composition of claim 1 , wherein the weight ratio of cement clinker to cement is in the range of 60:40 to 70:30.

10 . The LCM composition of claim 1 , wherein the polymer fibers comprise polypropylene fibers.

11 . The LCM composition of claim 1 , comprising particulate glass having an aspect ratio greater than or less than 1.

12 . The LCM composition of claim 11 , wherein the particulate glass comprises a plurality of glass fibers or a plurality of glass flakes.

Assignees

• Saudi Arabian Oil Co

Inventors

• Reddy B Raghava

Classifications

• C04B2103/0062

  Cross-linked polymers · CPC title

• C04B22/0093

  Aluminates · CPC title

• C04B2103/0028

  according to API · CPC title

• C04B26/285

  Cellulose or derivatives thereof (C04B26/24 takes precedence) · CPC title

• C09K2208/08

  Fiber-containing well treatment fluids · CPC title