BASIN

Table Column Column Comments

WELL WD_METRES Water depth, sea level to sea floor, in metres.

WELL TD_METRES The total depth of the well, below rotary table, in metres.

WELL MAX_TVD The maximum true vertical depth from the rotary table to the deepest point in the well.

WELL MAX_TVD_UNITS The units of measure of the maximum true vertical depth, either FT or M.

WELL PROFILE_TYPE The profile of the well path. Values: DIRECTIONAL (largely directionally drilled), DEVIATED (deviated around a fish or sidetracked), VERTICAL (straight? wellbore).

WELL PLOT This component was used in conjunction with a plotting program at GSCA to align the well name with the well location dot when producing location maps.

WELL SUPERAREA All of the offshore wells in BASIN have been assigned to a superarea in order to simplify graphs based on geographic area. Values: GULF OF ST. LAWRENCE (includes Offshore West Newfoundland), GRAND BANKS (includes East Newfoundland Shelf/Slope and Flemish Pass), HUDSON-DAVIS (Hudson Bay, Davis Strait and Ungava Bay), LABRADOR SHELF and SCOTIAN SHELF (includes Scotian Slope and Bay of Fundy).

WELL BOTTOM_HOLE_LATITUDE_NAD83 The digital latitude of the deepest point in the well, projected to the surface, employing the NAD83 geographic datum.

WELL BOTTOM_HOLE_LONGITUDE_NAD83 The digital longitude of the deepest point in the well, projected to the surface, employing the NAD83 geographic datum.

WELL CONTACT A code identifying the appropriate regulatory agency.

WELL AREA_FR The physiographic region in which the well is located (in French).

WELL BASIN_FR The French name for geologic region in which the well is drilled, such as BASSIN DE FUNDY.

WELL LOC_NO Location number. A three digit number, preceded by the letter "D" (for Dartmouth) that is used by GSCA and CNSOPB staff as a shorthand means of referring to a well. Each well is assigned a location number when the well samples arrive at CNSOPB for curation. Location numbers beginning with the letter "N" refer to offshore Newfoundland wells drilled since 1988 (the last year well samples for offshore Newfoundland were curated in Dartmouth). Location numbers preceded by "NB" are onshore New Brunswick wells. Location numbers beginning with the letter "L" are various onshore wells which have been added to the database. Location numbers starting with the letter "U" are offshore United States wells.

WELL UNIQUE_WELL_ID Unique well identifier. A 16 character number/letter combination that is assigned to each well by the appropriate regulatory agency prior to the commencement of drilling. For offshore U.S. wells an API (American Petroleum Institute) number is listed here. For Canadian onshore wells a UWI number was created by the GSCA using NEB methods.

WELL WELL_NAME The name of the well, such as GLOOSCAP C-63.

WELL OPERATOR Drilling partners, the first company named is usually the operator, such as "AMOCO" in "AMOCO-IMPERIAL".

WELL WELL_CLASSIFICATION The classification of the well, such as EXPLORATORY, DELINEATION or DEVELOPMENT.

WELL AREA The physiographic region in which the well is located, such as: BAY OF FUNDY, CAPE BRETON ISLAND, DAVIS STRAIT, EEAST NEWFOUNDLAND SHELF, EAST NEWFOUNDLAND SLOPE, FLEMISH PASS, GEORGES BANK, GRAND BANKS, GULF OF ST. LAWRENCE, HUDSON BAY, LABRADOR SHELF, NEW BRUNSWICK, NOVA SCOTIA, OFFSHORE WESTERN NEWFOUNDLAND, PRINCE EDWARD ISLAND, SCOTIAN SHELF, SCOTIAN SLOPE, UNGAVA BAY, U.S. ATLANTIC SHELF or U.S. ATLANTIC SLOPE.

WELL BASIN The geologic region in which the well is drilled, such as SCOTIAN BASIN.

WELL SUBBASIN The geologic sub-region in which the well is drilled, such as SABLE SUBBASIN.

WELL FIELD The field in which the well is located, such as COHASSET or TERRA NOVA. A minority of wells in BASIN are assigned to fields.

WELL LATITUDE The surface latitude of the well in digital degrees, example: 42.224864 = 42.224864 degrees north.

WELL LONGITUDE The surface longitude of the well in digital degrees, example: -46.105099 = 46.105099 degrees west.

WELL POSITION A "T" in this column indicates that the accompanying latitude and longitude are tentative, not yet verified with the well history report.

WELL LATITUDE_NAD83 The surface latitude of the well, in digital degrees, employing the NAD83 geographic datum.

WELL LONGITUDE_NAD83 The surface longitude of the well, in digital degrees, employing the NAD83 geographic datum.

WELL BOTTOM_HOLE_LATITUDE The digital latitude of the deepest point in the well, projected to the surface. For vertical wells, this value is the same as the surface latitude.

WELL BOTTOM_HOLE_LONGITUDE The digital longitude of the deepest point in the well, projected to the surface. For vertical wells, this value is the same as the surface longitude.

WELL STATUS The operational status of the well. Values: ABAND (abandoned), DRILL (drilling), INJEC (injecting), P&A (plugged and abandoned), P&S (plugged and suspended), PROD (production), SHUT (shut-in) or SUSP suspended).

WELL GAS A description of any gas shows in the well, Values: DRY HOLE, UNRATED (not rated by the relevant Petroleum Board, therefore either no gas or an insignificant volume of gas), SHOW, DISC (= Discovery), GAS (a delineation to a Gas Discovery), SIG DISC (= Significant Discovery) or COMM DISC (= Commercial Discovery). These designations are from the C-NLOPB Schedule of Wells (Newfoundland and Labrador offshore areas - March 2005) and the C-NSOPB Directory of Wells (http://www.cnsopb.ns.ca/directory_of_wells.php) for Nova Scotia offshore areas. UNRATED also includes wells that have not yet been rated by the Petroleum Board (either the C-NLOPB or the C-NSOPB).

WELL OIL A description of any oil shows in the well, Values: DRY HOLE, UNRATED (not rated by the relevant Petroleum Board, therefore either no oil or an insignificant volume of oil), SHOW, DISC (= Discovery), OIL (a delineation to a Oil Discovery), SIG DISC (= Significant Discovery) or COMM DISC (= Commercial Discovery). These designations are from the C-NLOPB Schedule of Wells (Newfoundland and Labrador offshore areas - March 2005) and the C-NSOPB Directory of Wells (http://www.cnsopb.ns.ca/directory_of_wells.php) for Nova Scotia offshore areas. UNRATED also includes wells that have not yet been rated by the Petroleum Board (either the C-NLOPB or the C-NSOPB).

WELL RT_METRES Rotary table height, above sea level, in metres.

Table	Column	Column Comments
WELL	WD_METRES	Water depth, sea level to sea floor, in metres.
WELL	TD_METRES	The total depth of the well, below rotary table, in metres.
WELL	MAX_TVD	The maximum true vertical depth from the rotary table to the deepest point in the well.
WELL	MAX_TVD_UNITS	The units of measure of the maximum true vertical depth, either FT or M.
WELL	PROFILE_TYPE	The profile of the well path. Values: DIRECTIONAL (largely directionally drilled), DEVIATED (deviated around a fish or sidetracked), VERTICAL (straight? wellbore).
WELL	PLOT	This component was used in conjunction with a plotting program at GSCA to align the well name with the well location dot when producing location maps.
WELL	SUPERAREA	All of the offshore wells in BASIN have been assigned to a superarea in order to simplify graphs based on geographic area. Values: GULF OF ST. LAWRENCE (includes Offshore West Newfoundland), GRAND BANKS (includes East Newfoundland Shelf/Slope and Flemish Pass), HUDSON-DAVIS (Hudson Bay, Davis Strait and Ungava Bay), LABRADOR SHELF and SCOTIAN SHELF (includes Scotian Slope and Bay of Fundy).
WELL	BOTTOM_HOLE_LATITUDE_NAD83	The digital latitude of the deepest point in the well, projected to the surface, employing the NAD83 geographic datum.
WELL	BOTTOM_HOLE_LONGITUDE_NAD83	The digital longitude of the deepest point in the well, projected to the surface, employing the NAD83 geographic datum.
WELL	CONTACT	A code identifying the appropriate regulatory agency.
WELL	AREA_FR	The physiographic region in which the well is located (in French).
WELL	BASIN_FR	The French name for geologic region in which the well is drilled, such as BASSIN DE FUNDY.
WELL	LOC_NO	Location number. A three digit number, preceded by the letter "D" (for Dartmouth) that is used by GSCA and CNSOPB staff as a shorthand means of referring to a well. Each well is assigned a location number when the well samples arrive at CNSOPB for curation. Location numbers beginning with the letter "N" refer to offshore Newfoundland wells drilled since 1988 (the last year well samples for offshore Newfoundland were curated in Dartmouth). Location numbers preceded by "NB" are onshore New Brunswick wells. Location numbers beginning with the letter "L" are various onshore wells which have been added to the database. Location numbers starting with the letter "U" are offshore United States wells.
WELL	UNIQUE_WELL_ID	Unique well identifier. A 16 character number/letter combination that is assigned to each well by the appropriate regulatory agency prior to the commencement of drilling. For offshore U.S. wells an API (American Petroleum Institute) number is listed here. For Canadian onshore wells a UWI number was created by the GSCA using NEB methods.
WELL	WELL_NAME	The name of the well, such as GLOOSCAP C-63.
WELL	OPERATOR	Drilling partners, the first company named is usually the operator, such as "AMOCO" in "AMOCO-IMPERIAL".
WELL	WELL_CLASSIFICATION	The classification of the well, such as EXPLORATORY, DELINEATION or DEVELOPMENT.
WELL	AREA	The physiographic region in which the well is located, such as: BAY OF FUNDY, CAPE BRETON ISLAND, DAVIS STRAIT, EEAST NEWFOUNDLAND SHELF, EAST NEWFOUNDLAND SLOPE, FLEMISH PASS, GEORGES BANK, GRAND BANKS, GULF OF ST. LAWRENCE, HUDSON BAY, LABRADOR SHELF, NEW BRUNSWICK, NOVA SCOTIA, OFFSHORE WESTERN NEWFOUNDLAND, PRINCE EDWARD ISLAND, SCOTIAN SHELF, SCOTIAN SLOPE, UNGAVA BAY, U.S. ATLANTIC SHELF or U.S. ATLANTIC SLOPE.
WELL	BASIN	The geologic region in which the well is drilled, such as SCOTIAN BASIN.
WELL	SUBBASIN	The geologic sub-region in which the well is drilled, such as SABLE SUBBASIN.
WELL	FIELD	The field in which the well is located, such as COHASSET or TERRA NOVA. A minority of wells in BASIN are assigned to fields.
WELL	LATITUDE	The surface latitude of the well in digital degrees, example: 42.224864 = 42.224864 degrees north.
WELL	LONGITUDE	The surface longitude of the well in digital degrees, example: -46.105099 = 46.105099 degrees west.
WELL	POSITION	A "T" in this column indicates that the accompanying latitude and longitude are tentative, not yet verified with the well history report.
WELL	LATITUDE_NAD83	The surface latitude of the well, in digital degrees, employing the NAD83 geographic datum.
WELL	LONGITUDE_NAD83	The surface longitude of the well, in digital degrees, employing the NAD83 geographic datum.
WELL	BOTTOM_HOLE_LATITUDE	The digital latitude of the deepest point in the well, projected to the surface. For vertical wells, this value is the same as the surface latitude.
WELL	BOTTOM_HOLE_LONGITUDE	The digital longitude of the deepest point in the well, projected to the surface. For vertical wells, this value is the same as the surface longitude.
WELL	STATUS	The operational status of the well. Values: ABAND (abandoned), DRILL (drilling), INJEC (injecting), P&A (plugged and abandoned), P&S (plugged and suspended), PROD (production), SHUT (shut-in) or SUSP suspended).
WELL	GAS	A description of any gas shows in the well, Values: DRY HOLE, UNRATED (not rated by the relevant Petroleum Board, therefore either no gas or an insignificant volume of gas), SHOW, DISC (= Discovery), GAS (a delineation to a Gas Discovery), SIG DISC (= Significant Discovery) or COMM DISC (= Commercial Discovery). These designations are from the C-NLOPB Schedule of Wells (Newfoundland and Labrador offshore areas - March 2005) and the C-NSOPB Directory of Wells (http://www.cnsopb.ns.ca/directory_of_wells.php) for Nova Scotia offshore areas. UNRATED also includes wells that have not yet been rated by the Petroleum Board (either the C-NLOPB or the C-NSOPB).
WELL	OIL	A description of any oil shows in the well, Values: DRY HOLE, UNRATED (not rated by the relevant Petroleum Board, therefore either no oil or an insignificant volume of oil), SHOW, DISC (= Discovery), OIL (a delineation to a Oil Discovery), SIG DISC (= Significant Discovery) or COMM DISC (= Commercial Discovery). These designations are from the C-NLOPB Schedule of Wells (Newfoundland and Labrador offshore areas - March 2005) and the C-NSOPB Directory of Wells (http://www.cnsopb.ns.ca/directory_of_wells.php) for Nova Scotia offshore areas. UNRATED also includes wells that have not yet been rated by the Petroleum Board (either the C-NLOPB or the C-NSOPB).
WELL	RT_METRES	Rotary table height, above sea level, in metres.