Loss circulation compositions (LCM) having portland cement clinker

Patent metadata

Field	Value
Publication number	US-10301529-B2
Application number	US-201815983798-A
Country	US
Kind code	B2
Filing date	May 18, 2018
Priority date	Jul 20, 2017
Publication date	May 28, 2019
Grant date	May 28, 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;
a polysaccharide; and
divinyl sulfone (DVS), the polysaccharide selected to crosslink in the presence of the DVS.

2. The LCM composition of claim 1 , wherein the Portland cement clinker is selected from the group consisting of ASTM International Type I cement clinker, ASTM International Type V cement clinker, API Class A cement clinker, and API Class G cement clinker.

3. The LCM composition of claim 1 , wherein the polysaccharide comprises at least one of: xanthan gum, hydroxyethyl cellulose, diutan gum, welan gum and guar gum.

4. The LCM composition of claim 1 , wherein the polysaccharide comprises a combination of xanthan gum and guar gum.

5. The LCM composition of claim 1 , wherein the polysaccharide comprises an amount in the range of 0.5 weight of the total weight (w/w %) to 0.8 w/w %.

6. The LCM composition of claim 1 , wherein the weight ratio of polysaccharide to DVS is in the range of 1:1 to 1:0.5.

7. The LCM composition of claim 1 , comprising sodium hydroxide in an amount sufficient to adjust the pH of a solution of the polysaccharide and DVS to at least 8.5.

8. The LCM composition of claim 1 , wherein the cement clinker comprises a plurality of particles each having a diameter in the range of 1.19 millimeters (mm) to 2.38 mm.

9. The LCM composition of claim 1 , consisting of:
Portland cement clinker, wherein the Portland cement clinker consists of non-hydraulic, non-cementiceous unground Portland cement clinker particles;
water;
a polysaccharide dissolved in the water to form a solution; and
divinyl sulfone (DVS), the polysaccharide selected to crosslink in the presence of the DVS.

10. The LCM composition of claim 1 , wherein the polysaccharide consists of diutan gum.

11. The LCM composition of claim 1 , wherein the polysaccharide consists of welan gum.

12. The LCM composition of claim 1 , wherein the polysaccharide comprises a mixture of helical and random coil polysaccharides.

Assignees

• Saudi Arabian Oil Co

Inventors

• Reddy B Raghava

Classifications

• C04B2103/0062

  Cross-linked polymers · CPC title

• C04B28/04 Primary

  Portland cements · CPC title

• C09K8/426

  for plugging · CPC title

• C04B26/28

  Polysaccharides or derivatives thereof · CPC title

• C04B22/0093

  Aluminates · CPC title