PTTC WEST COAST RESOURCE CENTER

“Gas Field Technology”

Thursday, April 28, 2005 – Sacramento, CA

Rock Zierman’s notes on the highlights of each speaker’s technical presentation.

James F. Lea, Texas Tech University “Overview of Technologies for Dewatering Gas Wells”
Liquid Load - as gas slows, liquids slow even more, if liquid load problems solved, could enhance as much as 40% of wells.
Source – condensation, heat
Inflow performance – as flow pressure decreases, production rises in 95% of wells.
Sudden drop in production is a casing problem, not reservoir.

John Crews, Cannon Associates, “A Review of Gas Processing and a Case Study”
Gas sweetening – sulfur recover
Gas liquids extraction

Saibal Mitra, CorrPro, “Corrosion Control of Well Casings”
Preserves assets versus cost
Metals want to return to native state – corrosion
Cathopic protection –galvatic/impressed current

Mike Gleason, Baker Oil Tools “An Overview of California Gas Storage Well Completions”
10 fields used for gas storage
Formation degrades with injection and withdrawal
Because of sand = sand control
Methods =limit production/flow rates
Gravel packing/ fracturing /frac packing
Mechanical for uniform sands

Mike Purcell, CA Energy Commission “Natural Gas Situation in the Western US and Canada”
California is at the end of the NG pipeline supply/demand outlook pessimistic
Solutions: efficiency/renewable/dg/ new supply/ new infrastructure
Land fill gas has few regulations where natural gas does, while discouraging domestic production

Rob Habel, CA DOGGR, “The Status of Natural Gas Development in Northern California”
Number of wells drilled/permitted constant but reservoirs deplete more quickly.
District 2 & 6 leading gas storage districts
Urban encroachment