presentation 1: Nitech™, proven technology for the gas industry
(midcontinent gpa, Oklahoma city, OK -- april 2009)

Author: Greg Hall, Vice President of Sales/Planning, BCCK Engineering
Event: Midcontinent GPA, Oklahoma City, Oklahoma
Date: April 2009

BCCK Engineering Inc.

BCCK Engineering, Inc., a privately owned, Midland, Texas based firm, specializes in engineering and technology services to clients on a worldwide basis. BCCK has been in business for over 28 years and we are the licensor of the patented Nitech™ nitrogen rejection process, which the EPA recognized for clean and efficient nitrogen rejection from high nitrogen gas streams. BCCK has been the most active NRU supplier in the United States for the past 10 years. We maintain a complete staff of engineers, designers, technical support and financial specialists. We provide full fabrication facilities via the NG Resources Corporation..

History of Nitrogen Extraction:

Prior to 1995

Minimum throughput required - 30 MMSCFD
Minimum gas reserves - 60/75 BCF
Limited inlet nitrogen content fluctuations - 15% maximum
Technology Source - Complex air separation derivative
Pre-treating required
- Removal of CO2 down to 3 PPM
- Removal of C3+ hydrocarbons
- Removal of water to a dew point of -275° F
Construction Time - Approximately 18 months

Current technologies:

Minimum throughput required for PSA unit - 1 MMSCFD
Minimum throughput required for cryogenic unit - 5 MMSCFD
Minimum gas reserves for cryogenic unit - 10 BCF
Technology Sources - Various
Pre-treating required for cryogenic applications
- Removal of CO2 down to 50 PPM
- Removal of C3+ hydrocarbons – not necessary
- Removal of water to a dew point of - 275° F
Construction Time - Approximately 12 months

What Can I Get from Current Technology?

Make it rubber - make it flexible!
- New technology / cost effective facilities should:
  - Be designed to operate in an extremely wide range of inlet nitrogen concentrations; designs for nitrogen ranging from 5 to 70 percent are normal
  - Consist of simple process design requiring minimal operator attention
  - Have run times in excess of 99%
  - Have low power consumption
  - Have low compression requirements
  - Have overall efficiencies of 99.5% or greater

What Else Can I Get from Current Technology?

New units can be configured to
- Extract NGLs to a level that is comparable to expander plant technologies
- Extract helium from inlet gas streams and produce a “crude” grade product
- Recover a high pressure dry nitrogen stream that is ideal for reinjection back into the reservoir in nitrogen flood applications
- Produce LNG and extract nitrogen in a common unit

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Nitech™ NRU Facilities Designed by BCCK Engineering

Nitech™ NRU for Coal Mine Methane Brookwood, Alabama	Nitech™ NRU and NGL extraction Grand Junction, Colorado	Nitech™ NRU/NGL extraction, CO2 removal and helium recovery. Edwards County, Kansas

Nitech™ NRU for nitrogen flood and NGL separation Chunchula, Alabama	Low – BTU gas with NRU/NGL extraction Seminole, Texas	Nitech™ NRU Taft, California

Nitech™ NRU Bowman, North Dakota	Nitech™ NRU Paden, Oklahoma