Flow through treatment string for one trip multilateral treatment

US10508519B2 · kind B2 · utility

Assignee

• Baker Hughes, a GE company, LLC · US

Inventors

• Bryan P. Pendleton · Cypress, US
• Joseph Sheehan · Houston, US
• John Vu · Houston, US
• Shannon Martin · Huffman, US
• Deshuttaney Mosley · Houston, US
• Mark J. Knebel · Tomball, US

Key dates

• Filing date: Oct 26, 2016
• Grant date: Dec 17, 2019
• Expiry date: Apr 15, 2037

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/26
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

An adjustable tubular string nose uses axially relatively movable wedge segments to form a variable diameter ring shape using technology described in U.S. Pat. No. 7,128,146 in another context. The nose has a seat around a passage therethrough. After insertion of the nose into a first bore, typically a main bore, the nose is retracted out of the main bore and pressure against a seated bore in the nose expands the nose radially to a degree where re-entry into the main bore is precluded but entry into a lateral bore is still possible. The string advances onto a lateral no-go. This signals surface personnel to pick up and raise pressure to blow the seated ball through the seat to again open the passage in the nose. A seal stack behind the nose in advanced into a lateral seal bore and the treatment can then commence.