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Title 11 . Natural Resources
Chapter 87 . (No Regulations Filed)
Section 110. Records

11 AAC 87.110. Records

(a) An operator of a well shall keep detailed and accurate drilling and well logs, core records, production and inspection records, and, if taken, appropriately bagged and identified samples of drill cuttings.

(b) The logs for geothermal wells must show the lithologic characteristics and depth of formations encountered; the depths and temperatures of water-bearing and steam-bearing strata; any data obtained about the temperatures, chemical compositions and physical characteristics of fluids encountered; the amount, size, and weight of casing used; and the size, type, and density of perforated intervals.

(c) The temperature log must be obtained by either continuous temperature logging or by a comprehensive multiple point temperature survey.

(d) The core record must show the depth and character of cores obtained, as determined from the study and analysis of the core.

(e) The drilling log must describe in chronological order and on a daily basis all significant operations carried out and equipment used during all phases of drilling. The results of testing blowout prevention equipment must be recorded on the drilling log. A monthly report of drilling and workover operations which summarizes the daily record of well operation during the previous month must be filed with the department on or before the last day of each month.

(f) Records listed in (a) - (e) of this section must be kept at the drill site or local office of the operator, available for inspection at reasonable times by the commissioner, and must be submitted to the department with the completion report required in 11 AAC 87.190.

(g) Monthly statements required by 11 AAC 87.210, and records of the inspections conducted under 11 AAC 87.250, for the preceding calendar month, must be filed with the department by the last day of each calendar month.

History: Eff. 5/8/83, Register 86

Authority: AS 38.05.020

AS 41.06.040


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Last modified 7/05/2006