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Informational Letter IL 88-1

6 January 1988

To: All Oil, Gas, and Oil Sands Operators

SUBMISSION OF MUD LOG DATA

The Board has received a request, endorsed by both the Canadian Petroleum Association (CPA) and the Independent Petroleum Association of Canada (IPAC), to require the submission of all hydrocarbon well logs or mud logs run voluntarily at all new wells drilled in the province.

The Board views mud log data as one of the surveys required for submission under section 11.140 (b) of the Oil and Gas Conservation Regulations. Additionally, the Board notes that historically most operators have voluntarily submitted this data.

As of 1 January 1988 the Board will record the receipt of mud logs as a specific log type in its log data system. As such, the availability of this data to industry should increase. Although the Board does not intend to pursue the collection of historical mud log data, the voluntary submission of such data would be treated in the same manner as that submitted for new wells.

Mud log data will be handled under the same confidentiality rules as other logs, surveys,or charts subject to section 12.150 of the Regulations and will be available from the ERCB Records Centre upon request.

Inquiries regarding the submission of mud log-data may be directed to Mr. Wayne Elsner, Geology Department, telephone 297-2425.

[signed by]

G. J. DeSorcy

Chairman