Packoff seals and processes for using same

US10487616B2 · kind B2 · utility

Assignee

• SCHLUMBERGER TECHNOLOGY CORPORATION · US

Inventors

• Joseph Varkey · Sugar Land, US
• Jared Mangum · Richmond, US
• Ramadan Mansour · Houston, US
• Montie W. Morrison · Sugar Land, US
• Sheng Chang · Sugar Land, US
• Qingdi Huang · Sugar Land, US
• Gregory Au · Houston, US
• Daniel Hogan · San Diego, US

Key dates

• Filing date: Jun 28, 2017
• Grant date: Nov 26, 2019
• Expiry date: Jan 5, 2038

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B34/08
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

Packoff seals and processes for using same. In some examples, the packoff seal can include a first end cap and a second end cap, a first insert and a second insert, a first deformable element disposed between the first end cap and the first insert, a second deformable element disposed between the second insert and the second end cap, and a third deformable element disposed between the first insert and the second insert. The first end cap, the first deformable element, the first insert, the third deformable element, the second insert, the second deformable element, and the second end cap together can form a body having a bore extending therethrough. The first deformable element, the second deformable element, and the third deformable element can have a compressive strength that is less than a compressive strength of the first and second inserts.