Cementing methods and systems employing a smart plug

US10196308B2 · kind B2 · utility

Assignee

• Halliburton Energy Services, Inc. · US

Inventors

• Vijay Gupta · Cary, US
• Mark W. Roberson · Cary, US
• David F. Myers · Cary, US
• James Lynn Davis · Holly Springs, US
• David Dausch · Raleigh, US

Key dates

• Filing date: Mar 17, 2015
• Grant date: Feb 5, 2019
• Expiry date: Mar 17, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2103/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A cementing method includes positioning a bottom plug at a casing shoe, rupturing the bottom plug, signaling when a top plug reaches a target position, and releasing a chemical into a cement slurry below the top plug in response to the signaling. The signal may comprise a mechanical trigger changing its position due to movement of the top plug past the target position.