press release

Unocal selects Digital Oilfield's integrated invoicing and contract management solution

The following news release was issued by Digital Oilfield.

HOUSTON, TEXAS (April 22, 2002)-Digital Oilfield Inc. today announced that Unocal (NYSE: UCL) has selected its OpenInvoice and OpenContract Internet-based solutions to automate their invoice and field ticket reconciliation, approval, and data capture processes. One of the world's leading independent natural gas and crude oil exploration and production companies, Unocal is implementing this unique integrated invoicing and contract management system initially in its North America operations, with the potential to later roll the technology out to its overseas locations.

"Unocal has an aggressive program under way to deploy e-business technologies that enhance our business performance," explains Tim Pownell, General Manager of the Unocal e-Procurement Project. "We are implementing Digital Oilfield's OpenInvoice and OpenContract solutions as part of this overall e-business strategy."

Rod Munro, president and CEO of Digital Oilfield Inc., comments, "We're delighted to assist Unocal in meeting its e-procurement objectives. With the Digital Oilfield solution, Unocal will have a greater understanding of their upstream spend while streamlining the process of submitting, validating, routing, coding, approving and tracking invoices."

Using OpenInvoice and OpenContract, E&P companies and their vendors can collaboratively create and process field tickets and invoices to eliminate 80 percent of the internal processing time and cost associated with invoice approval. These powerful workflow-improvement tools, specifically designed for upstream operations, free up professional staff time and give E&P managers instant access to detailed spending and operating information.

About Digital Oilfield Inc.

Digital Oilfield Inc. delivers Internet-based solutions that automate and integrate financial and operational processes between E&P companies and their suppliers. The company provides software, application hosting, consulting, integration and implementation services, and training. The company is committed to simplifying field procurement and enabling collaboration between drilling, production, accounting, procurement and purchasing departments and their service companies and suppliers.

Contact: Dave Savelle, Vice President Sales and Marketing, Digital Oilfield Inc. (713) 260-9693; dsavelle@digitaloilfield.com

Updated: April 2002