Inventory

Well logs located in Texas RRC Districts 1 through 6; North and South Louisiana

5-inch Detail Well Files (~90,370 Well Files) — ~142,000
1-inch Correlation Electric Logs — ~331,769

Many of these logs are available as TIF images (scanned images), others available as normal paper copies. The addition of scanned digital copies and the reduction of paper copies is an ongoing effort by the GCGL staff.

GCGL also maintains several proprietary well log and data files donated by operators and wildcatters such as Hamill Resources Company. These files are available in paper copy only at this time; these data will eventually be digitally scanned and integrated into the digital database.

• Exclusive company well file donation
• Extensive area of coverage; major concentration Texas RRC Districts 1, 2, 3, and 4
• Estimated 1250 well files include 5-inch detail logs, mud logs, sidewall core analyses, FT results, directional surveys, completion reports, and paleo reports.
• Estimated 1250 well files also include 1-inch correlation/work logs specific to the prospect area

Strip Logs from Koch Oil Company located in Texas RRC Districts 1 through 6, North and South Louisiana
State Well Log Service Driller’s Logs collection consist of well records, formation records, and core descriptions; records are pre-1960 and include Texas RRC Districts 1 through 6
(Strip Log and Driller’s Log Examples included in Prospectus)

Strip Logs Texas RRC Districts 1 through 6 — ~35,000
Strip Logs North and South Louisiana — ~10,000
Driller’s Logs Texas RRC Districts 1 through 6 — ~50,000

Scout Cards, Scout Tickets, and Well Histories cover Texas RRC Districts 1 through 6, North and South Louisiana.

The Scout Cards, Scout Tickets, and Well Histories described below (Sets 1 through 5) are a collection of well drilling, evaluation, completion, and production results generally acquired from the 1920s through the mid-1970s when most of the major players in the industry maintained a complete staff of professional oil scouts committed to secure specific company information. Many are hand written original reports and include location and elevation data, summarized drilling histories, show reports, core reports, SWC results and analysis, types of electric logs run, DST results, perforation depths, production test results, etc.

Scout Data Contains an Estimated 4.2 to 7.1 Million Images of Invaluable Information

Set 1: Skelly Oil Company Scout Tickets
• Early 1920s through 1950s
• Texas RRC Districts 1 through 6, South Louisiana (partial)
• Digitally scanned to TIF images
• Available on microfiche

Set 2: Pure Oil Company Scout Tickets
• 1930s and 1940s
• Hardcopies in card files and binders

Set 3: Lyons Oil Company; Associated Oil & Gas, Inc; Ira Rhinehart’s
• 1920s through 1950s
• Digitally scanned to TIF images

Set 4: Well Record Service (PI WRS) Completion Reports
• Early 1950s through 1977
• Digitally scanned to TIF images

Set 5: Cities Service Oil Company Scout Tickets
• Early 1920s through 1975
• Available on microfiche

• Coverage includes Texas and Louisiana
• Numerous reports from various donations, many embedded in scout ticket collections
• Indexed by State, County/Parish, Operator, Well Name, Well Number

• Extensive coverage within Texas RRC Districts 1 through 6, many reports embedded in scout ticket collections
• South Louisiana inventory includes 6 distinctive sets from various donations
• Indexed by State, County/Parish, Operator, Well Name, Well Number

• Texas and South Louisiana coverage
• 3400+ Velocity Surveys and Time-Depth Charts Available
• Indexed by State, County/Parish, Operator, Well Name, Well Number
• Extensive collection donated by Elwin Peacock

Elwin Peacock (1928-2016) was arguably one of the most well respected consulting geophysicists in the industry, specifically well known to many exploring the Texas and Louisiana Gulf Coast Region. Elwin’s career included positions at Sohio Petroleum Company, Signal Oil and Gas Company, Seiscom-Delta Corporation, and 40-plus years as an independent consulting geophysicist. Elwin’s vast collection of velocity surveys was donated to GCGL at his retirement and is unquestionably a unique treasure to GCGL.

GCGL maintains access to new well logs, well histories, historical production, decline data, etc. through a license with TGS/A2D Technologies. The well histories, historical production, production decline data, etc. are available through a desktop application only at GCGL.