Import Formats (Wells)
In Insight, well data is read from the project database. Well data are loaded from Log ASCII Standard (LAS) (see Import a LAS file), checkshots, deviation and marker files into the database. You can load the wells into a session from the project database (see Loading Wells).
Prior to Insight 3.0, well data is saved in the .duwell file. Every well file in this format is linked to the components of LAS, checkshots, deviation and marker files. You can import the .duwell files into a session (see Importing a Legacy Well).
LAS file format
Each well should have a LAS file that stores the curve and log data of the well. Insight supports the LAS 2.0 (1992) file specification as defined by the Canadian Well Logging Society (CWLS). Read the full details of the LAS 2.0 specification. In addition, Insight also supports basic LAS 3.0 files, see the LAS 3.0 specification for more details. To import, see Import a LAS file.
An example of a LAS file:
~VERSION INFORMATION
VERS. 2.0 : CWLS LOG ASCII STANDARD -VERSION 2.0
WRAP. NO : ONE LINE PER DEPTH STEP
~WELL INFORMATION
#MNEM.UNIT DATA DESCRIPTION
#----- ----- ---------- ---------------------
STRT .M 1670.0000 :START DEPTH
STOP .M 1660.0000 :STOP DEPTH
STEP .M -0.1250 :STEP
NULL . -999.25 :NULL VALUE
COMP . ANY OIL COMPANY INC. :COMPANY
WELL . ANY ET AL 12-34-12-34 :WELL
FLD . WILDCAT :FIELD
LOC . 12-34-12-34W5M :LOCATION
PROV . ALBERTA :PROVINCE
SRVC . ANY LOGGING COMPANY INC. :SERVICE COMPANY
DATE . 13-DEC-86 :LOG DATE
UWI . 100123401234W500 :UNIQUE WELL ID
~CURVE INFORMATION
#MNEM.UNIT API CODES CURVE DESCRIPTION
#-------------- ----------------- --------------------------------
DEPT .M : 1 DEPTH
DT .US/M 60 520 32 00 : 2 SONIC TRANSIT TIME
RHOB .K/M3 45 350 01 00 : 3 BULK DENSITY
NPHI .V/V 42 890 00 00 : 4 NEUTRON POROSITY
SFLU .OHMM 07 220 04 00 : 5 SHALLOW RESISTIVITY
SFLA .OHMM 07 222 01 00 : 6 SHALLOW RESISTIVITY
ILM .OHMM 07 120 44 00 : 7 MEDIUM RESISTIVITY
ILD .OHMM 07 120 46 00 : 8 DEEP RESISTIVITY
~PARAMETER INFORMATION
#MNEM.UNIT VALUE DESCRIPTION
#-------------- ---------------- ------------------------
MUD . GEL CHEM : MUD TYPE
BHT .DEGC 35.5000 : BOTTOM HOLE TEMPERATURE
BS .MM 200.0000 : BIT SIZE
FD .K/M3 1000.0000 : FLUID DENSITY
MATR . SAND : NEUTRON MATRIX
MDEN . 2710.0000 : LOGGING MATRIX DENSITY
RMF .OHMM 0.2160 : MUD FILTRATE RESISTIVITY
DFD .K/M3 1525.0000 : DRILL FLUID DENSITY
~OTHER
Note: The logging tools became stuck at 625 metres causing the data between
625 metres and 615 metres to be invalid.
~A DEPTH DT RHOB NPHI SFLU SFLA ILM ILD
1670.000 123.450 2550.000 0.450 123.450 123.450 110.200 105.600
1669.875 123.450 2550.000 0.450 123.450 123.450 110.200 105.600
1669.750 123.450 2550.000 0.450 123.450 123.450 110.200 105.600Checkshots
For a checkshot file, each file must contain at least two columns with time-depth tie points along the well path. The typical columns in a checkshot file are:
- TWT - Two-Way Time
- OWT - One-Way Time
- MDSS - Measured Depth Sub Sea
- MDKB - Measured Depth using Kelly Bushing datum
- MD - Measured Depth (assumed to be MDKB)
Tip: For a graphical representation of each column label, see Height datums and abbreviations in the FAQ section.
An example of a checkshot file:
Time-depth survey for Well-1
2
MDKB TWT
1210.00 1170.07
1710.00 1500.07
2210.00 1800.04
2700.00 2150.06
3200.00 2520.03
3730.00 2810.07
4000.00 2960.74Note: Insight also supports checkshots in TWT-TVD pairs.
Deviation survey
Insight uses deviation surveys to display the deviated wells accurately. Each file must contain at least four columns to tie the measured depth, true vertical depth, X and Y locations.
Expected measured depth column labels are:
- MDKB - Measured Depth using Kelly Bushing datum
- MDSS - Measured Depth Sub Sea
- MD - Measured Depth (assumed to be MDKB)
Expected true vertical depth column labels are:
- TVDKB - True Vertical Depth from Kelly Bushing
- TVDSS - True Vertical Depth to Sub Sea
- TVDBML - True Vertical Depth Below Mud Line
- TVD - True Vertical Depth (assumed to be TVDKB)
Tip: For a graphical representation of each column label, see Height datums and abbreviations in the FAQ section.
Expected labels for X and Y locations are:
- X (or UTMX) - X coordinate of the tie point
- Y (or UTMY) - Y coordinate of the tie point
An example of a deviation file:
Deviation survey for Well-1
4
MDKB TVDSS X Y
0.00 -20.06 39844.56 24589.34
1000.00 1020.02 39844.47 24588.95
2000.00 1990.05 39845.82 24590.47
3000.00 2980.00 39895.21 24524.15
4000.00 3410.03 40453.486 23864.922
5000.00 3910.05 41009.257 23219.492
6000.00 4890.06 41036.517 23192.534Markers
Marker data describes particular points that are labeled along the well path. Marker files must contain at least two columns:
- Marker name - Name of the markers.
- Marker depth - Depth of the markers.
An example of a well markers file:
well6
3
Label MDKB TVDSS
Ddav 2678.270020 2648.768067
IMH 2983.290039 2953.645907
TopM 3178.310059 3148.710059
Sand_B5 3239.729980 3210.129980
Sand_C5 3316.330078 3286.727245
Sand_D5 3482.729980 3452.929980
Sand_E5 3618.370117 3588.470117You can directly pick well markers and edit the markers data in Insight in the section view, well correlation window or the marker spreadsheet. Subsequently, you can save the changes you have made to the markers when you save the current session.
For more information, see Picking Well Markers, Displaying Well Correlation and Opening Marker Classification Sheet.
Import Markers using .tsv format
You can also import and export markers directly from the marker table as a .tsv or ‘tab-separated variable’ file (also known as a text tab delimited file). This file must be formatted with the correct header components for Insight to read it.
Example .tsv file with three markers and a header :
The bolded cells should not change; other fields should be filled using values for your project.
Note: importing well markers as a .tsv file will replace the existing table.
- Enable the Allow Changes checkbox.
- Right click on the markers table and select Import whole table from file.
- Browse the .tsv file and click Open.
Append markers using Copy and Paste
Append new markers to an existing table.
- Right click on the markers table and select Copy whole table to clipboard.
- Paste the data into a spreadsheet.
Note: Insight does not allow duplicate marker names. In the case of duplicates, it will use the last value in the table.
- Edit the table to include the new or edited markers.
- Select the entire table including header and copy onto the clipboard.
- Paste the edited table into Insight.
- Enable the Allow Changes checkbox.
- Right click and select Paste whole table from the clipboard.
- Values in blue are modifiable.
- Values in green are calculated from the well path.
- Save your session to commit the changes to the database.