Nebraska Administrative Code › Topic - OIL AND GAS CONSERVATION COMMISSION › Title 267 - NEBRASKA OIL AND GAS CONSERVATION COMMISSION › Chapter 3 - DRILLING, DEVELOPMENT, PRODUCING AND ABANDONMENT › Section 267-3-031 - WELL LOGS AND SAMPLES

Current through June 17, 2024
All wells drilled for oil and/or gas shall be adequately
				  logged with appropriate mechanical, electrical, or radiation survey devices
				  unless excepted by the Director. If adverse down hole conditions exist which
				  makes the running of adequate survey devices impractical or hazardous, or in
				  the case of open hole completions, twin wells, or other good cause shown, the
				  Director may waive such required survey upon request by the operator.
Logs shall be submitted as one unmarked paper copy, one
				  digital PDF or TIFF (Tagged Image File Format) or digital LAS, or a format
				  approved by the Director of the mechanical, electrical, or radiation survey
				  log, clearly indicating the position of the shoe of the surface casing and
				  including the entire logged interval below the shoe of the surface casing,
				  shall be submitted to the office of the Director within thirty (30) days after
				  such log is run. If an extension of thirty (30) days is needed for filing
				  survey logs, the Director may grant such extension for good cause shown.
Upon written request by the operator, logs of a confidential
				  nature will be held confidential for a period of not more than twelve (12)
				  months. The Director may release such confidential data to health care
				  professionals, emergency responders and public health regulators if the
				  Director deems it is necessary to protect the public's health, safety and
				  welfare.
A driller's log is to be submitted for wells drilled with
				  cable tools. Drill stem tests, copies of other surveys and tests such as core
				  analysis, water analysis, and mud logs, if taken, and the information there
				  from will be submitted on all wells drilled. Any survey or tests conducted by
				  the operator shall be maintained in his files for a period of at least two (2)
				  years. Drilling contractors and well service companies shall maintain a file of
				  surveys and tests conducted for a period of not less than five (5) years for
				  all work performed on any well drilled under the rules and regulations of the
				  Commission.
By agreement with the State Geologist, the Commission will
				  notify operators when samples of a well are requested by the Nebraska
				  Geological Survey. When indicated on Form 2, a systematic interval of sample
				  cuttings shall be saved and submitted to the Nebraska Geological Survey in
				  accordance with their request within ninety (90) days following completion or
				  deepening of a well. When requested in writing, samples shall be kept
				  confidential by the Nebraska Geological Survey for a period of not more than
				  twelve (12) months. Samples submitted may be sent through a recognized sample
				  cutting agency or sent directly to the Nebraska Geological Survey, Conservation
				  and Survey Division, School of Natural Resources, University of Nebraska,
				  Lincoln, Nebraska.