Selective untethered drone string for downhole oil and gas wellbore operations

US11591885B2 · kind B2 · utility

Assignee

• DynaEnergetics Europe GmbH · DE

Inventors

• Christian Eitschberger · Munich, DE
• Andreas Robert Zemla · Troisdorf, DE
• Liam McNelis · Bonn, DE
• Thilo Scharf · Letterkenny, IE
• Shmuel Silverman · Novato, US
• Arash Shahinpour · Troisdorf, DE
• Gernot Uwe Burmeister · Austin, US

Key dates

• Filing date: Apr 12, 2019
• Grant date: Feb 28, 2023
• Expiry date: Jul 15, 2039

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/119
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

According to some embodiments, devices, systems, and methods for autonomously or semi-autonomously conveying downhole oil and gas wellbore tools and performing downhole oil and gas wellbore operations are disclosed. The exemplary devices, systems, and methods may include an untethered drone that substantially disintegrates and/or dissolves into a proppant when shaped charges that the untethered drone carries are detonated. Two or more untethered drones, wellbore tools, and/or data collection devices may be connected in an untethered drone string and selectively detonated for efficiently performing wellbore operations and reducing the amount of debris left in the wellbore after such operations.