Underbalanced Drilling

The changing face of UBD technology. Part 1 of Tesco series which covers UBD system integration, a Canadian case history and technology advancements

Introducing aerated drilling in Venezuela. PDVSA/JNOC describe three-tiered approach, including research results, to apply new methods in Lake Maracaibo

UBD with oxygenated fluids. Int'l Nitrogen/Weatherford/Chevron/Howell describe chemical treatment that economically controls potential drill pipe/casing corrosion

Formation Evaluation

Shell E&P's David Patrick Murphy describes latest advances in formation evaluation including: a logging tool calibration facility, wireline, MWD, slimhole memory, hydrocarbon detecting mud logging and modular testing tools

Artificial Lift

Texas Tech University's Herald Winkler and James Lea review industry's latest advances for beam/progressing cavity/hydraulic pumping, and related technologies for pumping-well and field controls, gas lift and plunger lift improvements

Other Features

Imaging through a weathered near-surface. CGG and OXY describe an Elk Hills case history of a new refraction technique to improve seismic response

Revised equations give subsurface engineers new tools. Consultant Phil Holbrook shows Poisson's ratio and fracture pressure in separate mechanical systems

Southeast Asia: An in-depth look. Part 3 of series by World Oil's Kurt Abraham looks at electric submersible pump use by operator Maxus (Repsol/YPF)

Building a world-class organization with volatile oil prices. John de Wardt's Part 2 article describes how to break down problematic organizational boundaries