Halliburton Energy Services, Inc.

Shreya Mohan

Sairam Eluru

Chetan Prakash

Samuel Jason Lewis

Rahul Chandrakant Patil

Sandip Prabhakar Patil

Siva Rama Krishna Jandhyala

Tamal Kumar Sen

Vaishali Mishra

A variety of systems, methods and compositions are disclosed, including, in one method, a method of cementing may comprise: providing a cement composition comprising a hydraulic cement, water, and a functionalized polyethyleneimine retarder; placing the cement composition in a selected location; and allowing the cement composition to set.

Functionalized polyalkyleneimine cement retarder

A well treatment fluid comprising an aqueous base fluid and a sugar-based surfactant is provided. The sugar-based surfactant includes at least one betaine functionalized alkyl polyglucoside. Also provided is a method of treating an oil and gas well.

Sugar-based surfactant for well treatment fluids

Methods and systems for cementing casing in a wellbore are described. The methods include introducing a modified biopolymer into an inner diameter of the casing, reverse-circulating a cement composition in the wellbore, permitting the modified biopolymer to contact the cement composition, and terminating the reverse-circulation upon detection of an increase in pressure in pumping the cement composition. The modified biopolymer includes a reaction product of a biopolymer and an organic carbonate, and the cement composition has a pH greater than 11.

Chemical means to predict end of job in reverse-circulation cementing

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Pune, India

Shreya Mohan