MWD formation tester

US7395879B2 · kind B2 · utility

Assignee

• Halliburton Energy Services, Inc. · US

Inventors

• Pedro R. Segura · Austin, US
• Mark A. Sitka · Richmond, US
• Gregory N. Gilbert · Sugar Land, US
• Preston Weintraub · Spring, US
• Tony Vu · Lancaster, US
• John Hardin · Houston, US
• Kristopher V. Sherrill · Humble, US
• David Welshans · Damon, US
• James Edward Stone · Greer, US

Key dates

• Filing date: Apr 16, 2007
• Grant date: Jul 8, 2008
• Expiry date: Apr 16, 2027

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B49/10
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

An apparatus including a drill collar having an outer surface, an assembly for interaction with an earth formation coupled to the drill collar, the assembly including a first member to extend beyond the drill collar outer surface and a second member to extend beyond the first member and toward the earth formation to receive formation fluids. An apparatus including an MWD tool having an outer surface, a formation testing assembly coupled to the MWD tool, the formation testing assembly recessed beneath the outer surface in a first position and including a piston to extend beyond the outer surface to a second position and an inner sampling member to extend beyond the piston to a third position.