Canada-Nova Scotia Offshore Petr by fjwuxn

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Forty years of well history and subsurface data for Offshore Nova Scotia in
Halifax

The Geoscience Research Centre (GRC), located in Dartmouth, N.S. (across
from Halifax), along with a recently established online Data Management Centre
(DMC), serve as the physical archive for geological and geophysical information
and services for the Nova Scotia offshore area.

Subsurface samples from 204 offshore petroleum exploration and development
wells drilled by industry in Nova Scotia offshore area are stored at the facility.
The facility also curates a current hard copy inventory and microfiche record of
geological, well history and geophysical information.

Over 350 released geological and geophysical reports covering the Nova Scotia
offshore area are currently available for inspection. There are approximately 204
well history reports for viewing for the Nova Scotia offshore area. The paper and
microfilm records vary in completeness and quality depending on the operator
and the program vintage.

The facility archives all geological and geophysical reports, well site survey
reports, and several types of subsurface samples. The GRC prepares samples of
cores and cuttings for the extraction of microfossils and the processing of
palynological residues. It also maintains a micropaleontology data bank and
curate cores, cuttings, prepared residues, and picked slides for examination by
academic, industry, and government scientists.

Unwashed cutting samples are kept in plastic-lined cloth bags, and geochemistry
samples are stored in one-litre plastic jars. Bulk unwashed cutting samples,
geochemistry jars, and all drill core are stored in cardboard boxes which, in turn,
are stored on racked pallets.

Washed cutting samples are in 25ml plastic vials arranged in trays which are
stored in steel cabinets. Sidewall cores are stored in 25 ml plastic vials in steel
storage cabinets, as are the collections of picked micropaleontology and
palynology slides.

Samples from well site seabed surveys are also curated. Fluid samples are also
archived and are stored in 1 litre glass jars. Recent fluid samples are stored in a
flammable goods freezer.

A binocular microscope and other sample examination aids are available to users
upon request. Requests to sample materials in storage must be submitted, in
writing, with an outline of the type of study to be conducted.



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If permission to sample is granted, the size of sample is determined with
reference to the amount remaining and also the nature of the study. The amount
of sampling and the degree of duplication of studies is strictly regulated.

The facility's laboratory is able to process samples from wells for extraction of
micropaleontological material. Access to the laboratory is provided for users
wishing to prepare their samples taken for palynology processing, vitrinite
reflectance, petrology, etc. The laboratory also contains equipment for
petrological determinations, which includes a rock saw to sample cores for thin
sections.


Data Archive
Disclosure of Technical Data

Sections 122 and 121 respectively of the federal and provincial legislation deal
with the confidentiality and disclosure of information provided for purposes of the
legislation.

General information on a well, including its name, operator, classification,
location, identity of the drilling unit, depth, and operation status of the drilling
program may be obtained from the Board on a current basis.

Information or documentation in respect of an exploratory well is held
confidential for 2 years following the well termination date. The confidentiality
period for a delineation well is 2 years following the termination date of the
discovery well on the same prospect, or 90 days following the well termination
date of the delineation well, whichever is longer. For a development well, the
confidentiality period is 2 years following the termination date of the discovery
well on the same prospect, or 60 days following the termination date of the
development well, whichever is longer.

Information or documentation in respect to non-exclusive geophysical work is
held confidential for at least 10 years following the completion date of the work.
The geophysical regulations define a non-exclusive survey as a geophysical
operation that is conducted to acquire data for the purpose of sale, in whole or in
part, to the public.

Information and documentation with respect to exclusive geological or
exclusive geophysical work is held confidential for a period of 5 years following
the completion date of the work. The date of completion is considered to occur 6
months after the field program is terminated.

Operators are required to submit comprehensive reports on each program in the
offshore area. These reports, together with associated items such as
interpretative maps, seismic sections, well logs, cores, cuttings, fluid samples,



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and paleontological materials derived from such programs, are held confidential
for the requisite period, and then disclosed for public examination.


Geoscience Research Centre (GRC) Facts
Wells drilled in N.S. offshore area (to December 2006)   204
Spud date of oldest well (Sable Island C-67)             June 7, 1967
Drill core in storage                                    4,304 boxes
Metres of drill core in storage                          4,286.05 metres
Sidewall cores in storage                                14,128 vials
Washed cuttings in storage (approximately)               160,594 vials
Unwashed cuttings in storage (approximately)             139,746 bags
Geochemistry samples in storage (approximately)          11,549 jars
Size of data and sample storage area                     390 square
                                                         metres
Released geological & geophysical reports                over 365




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