Loss circulation compositions (LCM) having Portland cement clinker

Patent metadata

Field	Value
Publication number	US-10450496-B2
Application number	US-201916440487-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jul 20, 2017
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

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; and
a carrier fluid, wherein the carrier fluid comprises an aqueous carrier fluid that includes at least one of diutan gum, xanthan gum, and welan gum.

2. 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.

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

4. The LCM composition of claim 1 , wherein the weight ratio of cement clinker to cement is in the range of 60:40 to 90:10.

5. The LCM composition of claim 1 , comprising a plurality of polymer fibers.

6. The LCM composition of claim 5 , wherein the polymer fibers comprise polypropylene fibers.

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

8. The LCM composition of claim 7 , 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

• C09K8/5045

  containing inorganic compounds · CPC title

• C09K8/506

  containing organic compounds · CPC title

• C09K8/426

  for plugging · CPC title

• C04B28/04 Primary

  Portland cements · CPC title