Loss circulation compositions (LCM) having Portland cement clinker

Patent metadata

Field	Value
Publication number	US-10557076-B2
Application number	US-201916282926-A
Country	US
Kind code	B2
Filing date	Feb 22, 2019
Priority date	Jul 20, 2017
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

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;
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; and
particulate glass having an aspect ratio greater than 1 or less than 1.

2. The LCM composition of claim 1 , wherein the particulate glass comprises a plurality of glass fibers each having a length in the range of 1 millimeters (mm) to 6 millimeters.

3. The LCM composition of claim 1 , where the particulate glass comprises an amount in the range of 0.25 weight of the total weight of the LCM composition (w/w %) to 2.0 w/w %.

4. 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, and API Class G cement clinker.

5. 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;
a carrier fluid;
cement, wherein the cement comprises API Class G cement; and
particulate glass having an aspect ratio greater than 1 or less than 1.

6. The LCM composition of claim 5 , wherein the weight ratio of cement clinker to cement is in the range of 60:40 to 90:10.

7. The LCM composition of claim 5 , wherein the particulate glass comprises a plurality of glass fibers each having a length in the range of 1 millimeters (mm) to 6 millimeters.

8. The LCM composition of claim 5 , where the particulate glass comprises an amount in the range of 0.25 weight of the total weight of the LCM composition (w/w %) to 2.0 w/w %.

9. The LCM composition of claim 5 , wherein the Portland cement clinker comprises ASTM International Type I cement clinker, ASTM International Type V cement clinker, API Class A cement clinker, and API Class G cement clinker.

Assignees

• Saudi Arabian Oil Co

Inventors

• Reddy B Raghava

Classifications

• C04B2103/0062

  Cross-linked polymers · CPC title

• C04B22/124

  Chlorides of ammonium or of the alkali or alkaline earth metals, e.g. calcium chloride · CPC title

• C04B16/0633

  Polypropylene · CPC title

• C09K2208/08

  Fiber-containing well treatment fluids · CPC title

• C04B28/06

  Aluminous cements (monolithic refractories or refractory mortars C04B35/66) · CPC title