KGS Home Page Well Log Data base

Select location of well to view details.

Click on column heading to sort.
Save To File
Oil and Gas Index Page

2601 records returned--50 displayed at a time.
View page: 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || Next >
T-R-S Original
operator
Well API Spud, Plug
Dates
Logger, Tool Scan Top,
Bottom
Log
Date
T31S R34W, Sec. 28
NE NE SW
Northern Natural Gas Co. Michaelis 'A' 1 15-175-00525 24-APR-1955
Unknown
Welex
Radioactivity Log
Y 0; 2591 04/24/1955
T31S R34W, Sec. 29
SE SE NW
Northern Natural Gas Producing Co. Lahey 'B' 1 15-175-00526 08-JUN-1956
Unknown
Schlumberger
Laterolog Survey
Y 482; 2684 06/27/1956
T31S R34W, Sec. 29
SW NE SE
McCoy Petroleum Corp. Lahey 'B' 1-29 15-175-21248 31-AUG-1992
11-SEP-1992
Halliburton
Dual Induction Laterolog
Y 1717; 5895 09/10/1992
Halliburton
Microlog
Y 1717; 5861 09/10/1992
Geologist's Report
Drilling Time and Sample Log
Y 3800; 5900 09/10/1992
Halliburton
Spectral Density Dual Spaced Neutron II
Y 1717; 5862 09/10/1992
T31S R34W, Sec. 29
NE SE SW NE
McCoy Petroleum Corp. Lahey Trust 'C' 1-29 15-175-21516 26-JAN-1996
24-APR-2015
Halliburton
Dual Induction Laterolog
Y 1643; 5754 01/27/1996
Halliburton
Microlog
Y 3900; 5753 01/27/1996
Halliburton
Long Spaced Sonic
Y 1463; 5753 01/27/1996
Halliburton
Spectral Density Dual Spaced Neutron II
Y 3900; 5753 01/27/1996
Geologist's Report
Drilling Time and Sample Log
Y 3600; 5758 01/27/1996
T31S R34W, Sec. 29
NE SE SW SE
McCoy Petroleum Corp. Shaw 'A' 1-29 15-175-21227 18-DEC-1991
21-SEP-2010
Halliburton
Compensated Sonic Log
Y 1734; 5883 01/14/1992
Geologist's Report
Drilling Time and Sample Log
Y 3600; 5910 01/14/1992
Halliburton
Spectral Density Dual Spaced Neutron II
Y 1734; 5870 01/14/1992
Halliburton
Dual Induction Laterolog
Y 1734; 5903 01/14/1992
Halliburton
Microlog
Y 1734; 5904 01/14/1992
Halliburton
Shiva Six Electrode Dipmeter Computation
Y 4895; 5900 01/14/1992
T31S R34W, Sec. 29
NE SE SW
McCoy Petroleum Corp. Shaw 'B' 1-29 15-175-21252 28-MAY-1992
Unknown
Geologist's Report
Drilling Time and Sample Log
Y 3600; 5900 06/06/1992
Schlumberger
Dual Induction SFL Linear Correlation
Y 1497; 5896 06/06/1992
Schlumberger
Microlog
Y 4000; 5873 06/06/1992
Schlumberger
Formation Microscanner
Y 4920; 5900 06/07/1992
Schlumberger
Compensated Neutron Lithodensity
Y 60; 5899 06/07/1992
Halliburton
MSG Gamma Collar CBL Log
Y 1900; 5750 06/20/1992
Halliburton
Gamma Ray Depth Control Log
Y 5200; 5322 06/22/1992
T31S R34W, Sec. 29
SE NW NW SE
McCoy Petroleum Corp. Shaw 'C' 1-29 15-175-21572 08-NOV-1996
07-MAR-2018
Schlumberger
Caliper Log Gamma Ray
Y 1465; 5826 11/19/1996
Schlumberger
Compensated Neutron Lithodensity Gamma Ray
Y 60; 5826 11/19/1996
Schlumberger
Microlog Gamma Ray
Y 2500; 5826 11/19/1996
Geologist's Report
Drilling Time and Sample Log
Y 3900; 5840 11/19/1996
Schlumberger
Cement Bond
Y 631; 5778 11/19/1996
Schlumberger
Array Induction Gamma Ray
Y 2500; 5838 11/19/1996
T31S R34W, Sec. 30
NE SW NE
McCoy Petroleum Corp. Lanier 1-30 15-175-21035 10-JUL-1988
31-JUL-1988
Welex
Dual Induction Guard Log
  1740; 5847 07/19/1988
Welex
Compensated Density Dual Spaced Neutron Log
  1740; 5848 07/19/1988
Welex
Compensated Acoustic Velocity
  1740; 5847 07/19/1988
Welex
Micro Log
  1740; 5848 07/19/1988
Welex
Computer Analyzed Log
  3200; 5847 07/19/1988
Geologist's Report
Drilling Time and Sample Log
  3900; 5853 07/18/1988
T31S R34W, Sec. 30
NE
Northern Natural Gas Producing Co Reynolds 'A' 1 15-175-00527 14-APR-1956
Unknown
Schlumberger
Laterolog Survey
Y 520; 2717 04/14/1956
T31S R34W, Sec. 30
W2 NE SW
Mobil Oil Corp. Reynolds Unit 'A' 1-2 15-175-20632 21-JUN-1982
Unknown
GO--Gearhart-Owen
Dual Induction Laterolog Linear Correlation Log
Y 1780; 5891 07/03/1982
GO--Gearhart-Owen
Compensated Density Compensated Neutron Log
Y 1780; 5890 07/03/1982
GO--Gearhart-Owen
BHC Sonic Log
Y 1780; 5883 07/03/1982
GO--Gearhart-Owen
Micro Electrical Log
Y 1780; 5890 07/03/1982
Geologist's Report
Drilling Time and Sample Log
Y 1700; 5900 06/03/1982
T31S R34W, Sec. 31
SE SE SE
McCoy Petroleum Corp. Harlow 'A' 1-31 15-175-21396 29-APR-1994
09-MAY-1994
Halliburton
Dual Induction Laterolog
  1512; 5903 05/08/1994
Halliburton
Spectral Density Dual Spaced Neutron II
  1512; 5875 05/08/1994
Geologist's Report
Drilling Time and Sample Log
  4000; 5910 05/08/1994
Halliburton
Microlog
  4100; 5898 05/08/1994
T31S R34W, Sec. 31
SW NE
Flynn Energy Corp. Shaw 1-31 15-175-20893 28-DEC-1985
31-JAN-1986
GO--Gearhart-Owen
Dual Induction Laterolog Linear Correlation Log
Y 1691; 6295 01/11/1986
GO--Gearhart-Owen
Compensated Density Compensated Neutron Log
Y 1691; 6294 01/11/1986
T31S R34W, Sec. 31
SE SE NE NW
Northern Natural Gas Producing Co Stephens 'A' 1 15-175-00528 06-APR-1956
Unknown
Schlumberger
Laterolog Survey
Y 550; 2762 04/18/1956
T31S R34W, Sec. 32
SE SE SW NE
McCoy Petroleum Corp. Black 'A' 1-32 15-175-21190 12-AUG-1991
05-JAN-2023
Halliburton
Compensated Sonic Log
Y 1761; 5872 08/23/1991
Geologist's Report
Drilling Time and Sample Log
Y 3600; 5880 08/23/1991
Halliburton
Dual Induction Laterolog
Y 1761; 5876 08/23/1991
Halliburton
Spectral Density Dual Spaced Neutron II
Y 1761; 5843 08/23/1991
Halliburton
Microlog
Y 1761; 5842 08/23/1991
Halliburton
Acoustic Cement Bond Log
Y 1800; 5801 08/23/1991
T31S R34W, Sec. 32
SW SW NE NE
MOBIL OIL CORP BLACK A 1 15-175-00529-0001 23-APR-1988
Unknown
Schlumberger
Gamma Ray Neutron
  0; 2698 08/04/1954
T31S R34W, Sec. 32
NE SE
Mobil Oil Corp. Black Unit 'A' 2 15-175-20956 10-JUN-1987
Unknown
Welex
Dual Induction Shallow Guard Log
Y 1713; 5857 06/16/1987
Welex
Compensated Spectral Natural Gamma Log
Y 2500; 5830 06/17/1987
Welex
Spectral Density Dual Spaced II Neutron Log
Y 1720; 5860 06/16/1987
Welex
Micro Log
Y 2500; 5858 06/17/1987
Welex
Acoustic Cement Bond Log
Y 1550; 3281 07/02/1987
Geologist's Report
Mud Log
Y 3000; 5860 06/16/1987
T31S R34W, Sec. 32
NE SE
McCoy Petroleum Corp. Luciene C. Black 1-32 15-175-20956-0001 17-FEB-1993
04-JAN-2023
Halliburton
MSG Gamma Collar CBL Log
Y 50; 1649 02/23/1993
T31S R34W, Sec. 32
S2 NE NW
Vincent J. Duncan Shaw 1 15-175-20925 10-DEC-1986
31-DEC-1986
Schlumberger
Dual Induction SFL
Y 1650; 5894 12/20/1986
Geologist's Report
Drilling Time and Sample Log
Y 2600; 5900 12/19/1986
T31S R34W, Sec. 33
NE NE SW NW
EOG Resources, Inc. Black 33-1 15-175-22182 11-JUL-2010
17-JUL-2010
Halliburton
Microlog
Y 2450; 5839 07/16/2010
Halliburton
Array Compensated Resistivity
Y 1699; 5866 07/16/2010
Halliburton
Borehole Sonic Array
Y 1699; 5850 07/16/2010
Halliburton
Spectral Density Dual Spaced Neutron
Y 2450; 5839 07/16/2010
Halliburton
Annular Hole Volume
Y 1700; 5839 07/16/2010
Halliburton
Spectral Density Dual Spaced Neutron Microlog
Y 2450; 5839 07/16/2010
T31S R34W, Sec. 33
SW SW NE
Northern Natural Gas Co. Schnellbacher 'A' 1 15-175-00530 02-MAY-1954
Unknown
Lane-Wells
Radioactivity Log
Y 0; 2640 05/02/1954
T31S R34W, Sec. 33
SE SW
Santa Fe Energy Co. Stalker 1-33 15-175-20888 15-DEC-1985
31-JAN-1986
Schlumberger
Dual Induction SFL Gamma Ray
  1878; 5935 01/03/1985
Schlumberger
Compensated Neutron Lithodensity NGS
  2500; 5935 01/03/1985
T31S R34W, Sec. 34
SE SE SE
McCoy Petroleum Corp. Brollier 1-34 15-175-21034 21-JUL-1988
Unknown
Welex
Compensated Density Dual Spaced Neutron Log
Y 1700; 5800 08/01/1988
Geologist's Report
Drilling Time and Sample Log
Y 3100; 5800 08/01/1988
Welex
Compensated Acoustic Velocity
Y 1550; 5770 08/01/1988
Welex
Micro Log
Y 1700; 5800 08/01/1988
Welex
Acoustic Cement Bond Log
Y 1850; 5741 08/25/1988
Welex
Dual Induction Guard Log
Y 0; 5800 08/01/1988
Welex
Computer Analyzed Log
Y 2450; 5800 08/01/1988
T31S R34W, Sec. 34
NE NE SW
DNB Drilling, Inc. McBride 1 15-175-20992 09-DEC-1987
31-DEC-1987
Great Guns
Dual Compensated Porosity Log
  1620; 5745 12/18/1987
Great Guns
Dual Induction Log
  1620; 5765 12/18/1987
T31S R34W, Sec. 34
SE SE SE NW
Northern Natural Gas Producing Co. RidenourR 'A' 1 15-175-00531 28-APR-1955
Unknown
Schlumberger
Laterolog Survey
Y 419; 2615 05/05/1955
T31S R34W, Sec. 35
NW SW
McCoy Petroleum Corp. Conover 'A' 1-35 15-175-21049 02-NOV-1988
15-NOV-1988
Welex
Dual Induction Guard Log
  0; 5749 11/14/1988
Geologist's Report
Drilling Time and Sample Log
  3100; 5750 11/14/1988
Welex
Compensated Density Dual Spaced Neutron Log
  1650; 5749 11/14/1988
Welex
Compensated Acoustic Velocity
  1600; 5751 11/14/1988
Welex
Computer Analyzed Log
  0; 5749 11/14/1988
Welex
Micro Log
  1650; 5749 11/14/1988
T31S R34W, Sec. 35
SE SE NE
EOG Resources, Inc. Conover Trust 35-1 15-175-22177 07-JUN-2009
13-FEB-2013
Halliburton
Borehole Sonic Array Quality Log
Y 1600; 5678 06/15/2009
Halliburton
Microlog
Y 2360; 5656 06/13/2009
Halliburton
Array Compensated True Resistivity
Y 1610; 5692 06/13/2009
Halliburton
Spectral Density Dual Spaced Neutron
Y 2360; 5656 06/13/2009
T31S R34W, Sec. 35
N2 NE SE SE
EOG Resources, Inc. Conover Trust 35-2 15-175-22184 31-JUL-2010
10-JUL-2020
Weatherford
Cement Bond Log
Y 4050; 5388 08/20/2010
Weatherford
Gamma Ray Log
Y 5000; 5158 08/23/2010
Halliburton
Spectral Density Dual Spaced Neutron
Y 1717; 5623 08/08/2010
Halliburton
Microlog
Y 2400; 5623 08/08/2010
Halliburton
Spectral Density Dual Spaced Neutron Microlog
Y 2400; 5623 08/08/2010
Halliburton
Array Compensated Resistivity
Y 1717; 5623 08/08/2010
Halliburton
Borehole Volume Log
Y 1717; 5623 08/08/2010
Weatherford
Perforation Correlation
Y 4000; 5210 09/13/2010
T31S R34W, Sec. 35
SW NE
Northern Natural Gas Producing Co. Ingram 'A' 1 15-175-00532 27-JUN-1956
Unknown
Schlumberger
Laterolog Survey
Y 452; 2626 07/31/1956
T31S R34W, Sec. 35
SE SW
Mobil Oil Corp. M. A. Johnson 1 15-175-20828 20-FEB-1985
Unknown
Schlumberger
Dual Induction SFL Gamma Ray
Y 1636; 5655 03/03/1985
Schlumberger
Borehole Compensated Sonic Gamma Ray
Y 1636; 5639 03/03/1985
Schlumberger
Compensated Neutron Lithodensity Gamma Ray
Y 1636; 5658 03/03/1985
Schlumberger
Microlog Gamma Ray
Y 2500; 5615 03/03/1985
Schlumberger
Electromagnetic Propagation Gamma Ray
Y 2500; 5611 03/03/1985
Schlumberger
Moved Oil Lithology Cyberlook
Y 2500; 5585 03/03/1985
T31S R34W, Sec. 36
SW SW NE
Northern Natural Gas Producing Co. Beaty 'A' 1 15-175-00533 24-JUN-1956
Unknown
Schlumberger
Laterolog Survey
Y 444; 2630 07/25/1956
T31S R34W, Sec. 36
SE SE
Anadarko Petroleum Corp. Beaty Trust 'B' 1 15-175-21515 30-NOV-1995
Unknown
Western Atlas
Segmented Bond Log Gamma Ray CCL
Y 4045; 5933 12/23/1995
Halliburton
Triple Combo
Y 3300; 5985 12/23/1995
Halliburton
Dual Induction MSFL
Y 300; 5985 12/13/1995
Halliburton
Long Spaced Sonic
Y 1610; 5932 12/13/1995
Halliburton
Spectral Density Dual Spaced Neutron II
Y 3300; 5985 12/13/1995
Halliburton
Microlog
Y 3300; 5951 12/13/1995
T31S R34W, Sec. 36
SE NE
Anadarko Petroleum Corp. Beaty Trust 'B' 2 15-175-21546 05-SEP-1996
30-SEP-1996
Halliburton
High Resolution Induction MSFL Log
Y 0; 5888 09/14/1996
Halliburton
Spectral Density Dual Spaced Neutron II
Y 1679; 5896 09/14/1996
Halliburton
Long Spaced Sonic
Y 1679; 5840 09/14/1996
Halliburton
Microlog
Y 1679; 5896 09/14/1996
T31S R34W, Sec. 36
SE
Northern Natural Gas Producing Co. Beaty Unit 'A' 2 15-175-20347 14-APR-1978
01-MAY-1978
Schlumberger
Compensated Neutron Formation Density
  1625; 5840 04/28/1978
Schlumberger
Dual Induction Linear Correlation
  1625; 5834 04/28/1978
T31S R34W, Sec. 36
SE NW NW
Mobil Oil Corp. Beaty Unit 'A' 3 15-175-21492 23-OCT-1995
Unknown
Western Atlas
High Resolution Dual Induction Focused Log Gamma Ray
  584; 2796 10/27/1995
Western Atlas
Z-Densilog Compensated Neutron Spectralog
  2250; 2790 10/27/1995
Western Atlas
Caliper Log Gamma Ray
  584; 2796 10/27/1995
T31S R34W, Sec. 36
NE NW
McCoy Petroleum Corp. Conover 'B' 1-36 15-175-21048 21-OCT-1988
01-NOV-1988
Welex
Dual Induction Guard Log
Y 0; 5848 10/31/1988
Welex
Compensated Density Dual Spaced Neutron Log
Y 1673; 5850 10/31/1988
Welex
Micro Log
Y 1670; 5850 10/31/1988
Welex
Compensated Acoustic Velocity
Y 0; 5848 10/31/1988
Welex
Computer Analyzed Log
Y 1673; 5850 10/31/1988
Geologist's Report
Drilling Time and Sample Log
Y 3100; 5850 10/31/1988
T32S R31W, Sec. 1
SE NW NW NE
Mustang Oil and Gas Corp. Saunders 1-1 15-175-21299 23-JUN-1993
06-JAN-2012
Atlas Wireline Services
Dual Induction Focused Log Gamma Ray
Y 1720; 6058 07/06/1993
Atlas Wireline Services
Minilog Gamma Ray
  1720; 6056 07/06/1993
Atlas Wireline Services
Z-Densilog Compensated Neutron Gamma Ray Minilog
  1720; 6056 07/06/1993
Atlas Wireline Services
Caliper Log Gamma Ray
  1720; 6058 07/06/1993
Geologist's Report
Drilling Time and Sample Log
  2100; 6055 07/06/1993
Atlas Wireline Services
BHC Acoustilog Gamma Ray
  1720; 6058 07/06/1993
T32S R31W, Sec. 2
S2 N2 NE
Imperial Oil Co. Barnhardt 1-2 15-175-20346 06-MAR-1978
14-MAR-1978
Welex
Gamma Guard Log
Y 0; 3196 03/12/1978
Welex
Compensated Density Neutron Log
Y 620; 3198 03/13/1978
Welex
Fracture Finder Micro Seismogram Log
Y 620; 3191 03/13/1978
Welex
Compensated Acoustic Velocity Gamma Caliper
Y 600; 3192 03/12/1978
T32S R31W, Sec. 2
SE NE SW
Murfin Drilling Co., Inc. Langhofer 1-2 15-175-21415 28-DEC-1994
19-JAN-1995
Atlas Wireline Services
Dual Induction Focused Log Gamma Ray
Y 1644; 3331 01/02/1995
Atlas Wireline Services
Z-Densilog Compensated Neutron Gamma Ray Minilog
Y 1644; 3331 01/02/1995
Atlas Wireline Services
BHC Acoustilog Gamma Ray Caliper
Y 1644; 3331 01/02/1995
Atlas Wireline Services
Minilog Gamma Ray
Y 1644; 3331 01/02/1995
Geologist's Report
Drilling Time and Sample Log
Y 2600; 5986 01/02/1995
T32S R31W, Sec. 3
NE SE SE
Murfin Drilling Co. Collingwood 1-3 15-175-21343 26-SEP-1993
11-OCT-1993
Atlas Wireline Services
Dual Induction Focused Log Gamma Ray
Y 0; 6052 10/10/1993
Atlas Wireline Services
Minilog Gamma Ray
Y 2600; 6052 10/10/1993
Atlas Wireline Services
BHC Acoustilog Gamma Ray Caliper
Y 0; 6052 10/10/1993
Atlas Wireline Services
Z-Densilog Compensated Neutron Gamma Ray Minilog
Y 2600; 6052 10/10/1993
Geologist's Report
Drilling Time and Sample Log
Y 2090; 6050 10/10/1993
Atlas Wireline Services
Caliper Log Gamma Ray
Y 1668; 6052 10/10/1993
T32S R31W, Sec. 4
E2 NW
ENSIGN OPERATING COMPANY Quillin 1-4 15-175-21114 18-NOV-1989
15-APR-1992
Great Guns
Micro Resistivity Log
  2490; 6001 11/30/1989
Great Guns
Dual Induction Log
Y 0; 6002 11/30/1989
Great Guns
Sonic Log
  3340; 5997 11/30/1989
Great Guns
Dual Compensated Porosity Log
  2490; 5983 11/30/1989
Geologist's Report
Drilling Time and Sample Log
  2500; 6000 11/18/1989
T32S R31W, Sec. 5
SW SW SE
Donald C. Slawson Wickman 1-5 15-175-20897 23-JAN-1986
Unknown
Schlumberger
Dual Induction SFL Gamma Ray
Y 1634; 5946 02/02/1986
Schlumberger
Compensated Neutron Lithodensity Gamma Ray
  4100; 5949 02/02/1986
Geologist's Report
Drilling Time and Sample Log
  4100; 5950 02/02/1986
T32S R31W, Sec. 6
NW SW
TUCKER PRODUCTION CORP. Barnhardt 1 15-175-20517 08-JAN-1981
Unknown
Gearhart
Dual Induction Laterolog
Y 1644; 5952 01/21/1981
T32S R31W, Sec. 6
NW NW
GRUENERWALD, WILLIAM & ASSOC. Woodworth 2 15-175-20025 13-DEC-1967
06-JAN-1968
Schlumberger
Borehole Compensated Sonic Gamma Ray
  4000; 4998 01/05/1968
Schlumberger
Dual Induction Laterolog
  1643; 5997 12/13/1967
T32S R31W, Sec. 7
N2 NE NW
Oil Producers Inc. of Kansas Dreitz 1-7 15-175-22118 16-NOV-2007
14-JAN-2009
Superior Well Services
Sonic Log
Y 2600; 3000 11/28/2007
Superior Well Services
Microlog
Y 2600; 3000 11/28/2007
Superior Well Services
Compensated Density Neutron PE
Y 4100; 5877 11/28/2007
Superior Well Services
Dual Induction
Y 0; 5899 11/28/2007
Geologist's Report
Lithology and Drilling Time
Y 2600; 5900 11/28/2007
T32S R31W, Sec. 7
SE NW
SKELLY OIL CO. M. M. Sutton 1 15-175-01000 10-JAN-1961
08-FEB-1961
Schlumberger
Laterolog Gamma Ray
Y 1670; 5934 02/07/1961
Schlumberger
Microlaterolog
Y 4200; 5935 01/10/1961
Strip/Sample Logs
Kansas Sample Log Service
Kansas Sample Log Service No: 7909
Y 2400; 5937 04/12/1961
T32S R31W, Sec. 8
NW NW
Vanderbilt Resources Corp. Alta Krause 1 15-175-20216 08-FEB-1974
22-FEB-1974
Welex
Induction Electric Log
  1683; 5980 02/21/1974
Welex
Compensated Acoustic Velocity
  4200; 5977 02/21/1974
T32S R31W, Sec. 8
NW SW NE SE
Mesa Petroleum Co. Roehr 1-8 15-175-20484 09-NOV-1980
21-NOV-2013
Schlumberger
Compensated Neutron Formation Density
  2600; 5985 11/19/1980
T32S R31W, Sec. 8
W2 SE NW NE
INDIAN WELLS OIL COMPANY Roehr 2-8 15-175-21043 11-SEP-1988
11-FEB-1998
Welex
Micro Log
  3750; 5762 09/19/1988
T32S R31W, Sec. 9
SE SW NW SW
Mesa Petroleum Co. Beck 1-9 15-175-20448 13-FEB-1980
19-NOV-2013
Schlumberger
Dual Induction SFL
Y 1512; 5994 02/13/1980
T32S R31W, Sec. 9
NW SE SE
SUNRAY MID-CONTINENT OIL COMPANY Pearl Collins 1 15-175-10122 03-AUG-1957
06-SEP-1957
Schlumberger
Laterolog Survey
Y 1427; 5804 09/05/1957
Schlumberger
Induction Log
Y 4300; 5800 09/05/1957
View page: 1 || 2 || 3 || 4 || 5 || 6 || 7 || 8 || 9 || 10 || Next >

Kansas Geological Survey, Wireline Log Header Database
Comments to webadmin@kgs.ku.edu
URL=http://www.kgs.ku.edu/Magellan/Elog/index.html
Well Log Programs Updated May 27, 2014. Data added continuously.