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PRODUCTION DATA

TGS | PRODUCTION DATA JANUARY 2013

Continuously updated US production data is now available from TGS. The nationwide database includes LONGBOW™, the production data query and export tool, designed to accommodate leading industry formats. Users also have the option to purchase one-time, static snapshot reports of production data, available for download online.

National Access PlanTGS’ national production data access plan combines a complete dataset with timely updates and accurate data. The plan includes unlimited access to current monthly volumes as soon as the data is released. Users can visualize and export the data to your specifications using the LONGBOW tool, built into the nationwide database. Data delivery options include shipment or behind-the-firewall database installation.

Snapshot ReportSnapshot reports offer a freeze-frame look at the most current production information available for a given well. They are available alongside log and other borehole data in LOG-LINE Plus!®, TGS’ online well data collection. The reports are delivered in both a PDF format for simple examination of the data and in a XLS spreadsheet for additional analysis. Snapshot reports are licensed individually without an ongoing cost.

Reports Details Header/ID Data Production Information Test Data Perf DataAPI Number/Well ID Well ID Well ID Well ID

Well Name/Number API API API

Operator Name Well Name/Number Test Duration Start Date

State Operator Name Test Type Stop Date

County Field Name Method Top

Field Name State/County Oil Test Rate Bottom

Basin Production Month/Year Gas Test Rate SPF

Section-Township-Range Days On Production Water Test Rate Shots

Quarter/Quarter Gas Production Shut in WH Pressure Phasing

Footage and Direction Oil Production Casing Pressure Gun

District/Abstract/Survey/Block Water Production Gas Gravity Hole Size

Offshore Area & Block Formation/Lease Name BTU Comment

Latitude/Longitude Number Wells Reported FTP

Spud Date Production Type

Completion Data

Plug Date

First Production Date

Well Type

Total Depth

Elevation

Status

Map of Cumulatives in LONGBOW

WWW.TGS.COM © 2013 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED.

TGS | PRODUCTION DATA JANUARY 2013

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PRODUCTION DATA

LONGBOW query and export tool was designed by TGS to meet the unique needs of production data customers. Users can visualize production data to specifications or export the data into a compatible desktop format. LONGBOW software is included with the national production data access plan.

TGS production data is allocated to the unique well level for the 10 states with lease-level reporting standards. TGS’allocation methodology is open to the customer to select which method works best for their needs:

� 1/N–Divide lease by the number of wells producing each month

� Step Allocation–Use the most recent test data to calculate a well’s allocation percentage

� Straightline Allocation–Decline test data by calculating the line between the most recent pair of test values every month, find the allocation percentages and apply to the lease production

LONGBOW Query and Export Tool

GOM

ColoradoKansas Missouri

ArkansasOklahoma

Texas

Nebraska

Louisiana

Michigan

Production Plot

States With Lease-Level Reported Production

Lease to Well Allocations

Field Map