Incident details
Operator, cause, commodity and consequences with raw source fields.
GTG incident on 2017-11-09 — KY
Operator
Louisville Gas & Electric Co
Cause
Other Incident Cause
Commodity
Natural Gas
Program
GTG
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$200,000
Incident datetime
2017-11-09 16:23
Report number
Location
KY
Narrative
Gas was discovered leaking at the surface near the wellhead of the a. Scott 1a observation well on october 10th, 2017. A cement retainer was set at the bottom of the well and cement was pumped through the plug to fill wellbore and casing below the plug on october 19th, 2017 in preparation for well abandonment. A geophone array production survey (gaps) log was run on a. Scott 1a observation well on november 7, 2017 and a report was received on november 9, 2017 indicating no gas was detected leaking from the storage zone to the surface. However, gas was detected flowing from a porous zone at approximately 120 foot in depth up the outside of well casing to the surface. On november 8, 2017 lg&e was notified by the landowner of an adjacent property, outside of storage lease area, of three abandoned oil well sites leaking gas to the surface. A nearby observation well (a. Scott 2a) re-plugged in 2014 was re-entered (after drilling out cement) and a gaps log was run. The gaps log found gas flowing behind the casing from the bottom of the well to a porous formation at approximately 120 feet in depth. The a. Scott 2a well was perforated and cement squeeze procedure was performed on november 27, 2017. The well was re-entered (after drilling out cement and plugs) and cement bond and gaps logs were run on december 11th, 2017. The cement bond log indicated cement from cement squeeze procedure was successfully placed behind approximately 100 feet of the well casing. The log found the cement squeeze job successfully sealed off gas previously mitigating behind casing to the porous zone at 120 feet in depth (need to verify this is correct after receiving log report from weatherford expected on december 13th). Lg&e is continuing to monitor surface gas leaks to verify corrective actions taken have addressed leaks from gas storage zone. The estimate of gas loss in part a(10) above includes our best estimate of gas which leaked from the a scott 2a well from the date it was re-plugged in february 2014 (which is our best estimate of the date when the leak may have started) until the leak was remediated on november 27, 2017. No loss is estimated from the a scott 1a observation well because, as noted above, it was determined that no gas was leaking from the storage zone at that location.
Detailed record list
Report Received Date
2017-12-15 00:00:00
Iyear
2017
Report Number
20170123
Supplemental Number
30480
Report Type
Supplemental Final
Operator Id
11824
Name
Louisville Gas & Electric Co
Operator Street Address
820 West Broadway, Po Box 32030
Operator City Name
Louisville
Operator State Abbreviation
KY
Operator Postal Code
40202
Local Datetime
2017-11-09 16:23:00
Location Latitude
37.177566
Location Longitude
-85.687109
Nrc Rpt Num
1197549
Nrc Rpt Datetime
2017-11-17 12:46:00
Commodity Released Type
Natural Gas
Unintentional Release
676
Intentional Release
0
Accompanying Liquid
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Shutdown Due Accident Ind
No
Ignite Ind
No
Explode Ind
No
Num Pub Evacuated
0
Incident Identified Datetime
2017-11-09 16:23:00
On Site Datetime
2017-11-09 16:23:00
On Off Shore
Onshore
Onshore State Abbreviation
Ky
Onshore Postal Code
42746
Onshore City Name
Hardyville, Kentucky
Onshore County Name
Metcalfe County
Designated Location
Survey Station No.
Designated Name
A.scott1awell
Pipe Fac Name
Center Gas Storage Field
Segment Name
A. Scott 1-A Well
Federal
No
Location Type
Operator-Controlled Property
Incident Area Type
Underground
Incident Area Subtype
Other
Incident Area Details
Gas Storage Field
Depth Of Cover
1440
Crossing
No
Pipe Facility Type
Interstate
System Part Involved
Belowground Storage, Including Associated Equipment And Piping
Item Involved
Underground Gas Storage Or Cavern
Installation Year
Unknown
Material Involved
Material Other Than Carbon Steel Or Plastic
Material Details
Annulus Leak
Release Type
Other
Release Type Details
Annulus Leak
Class Location Type
Class 1 Location
Could Be Hca
No
Pir Radius
1
Heat Damage Ind
No
Non Heat Damage Ind
No
Hca Fatalities Ind
No
Est Cost Oper Paid
0
Est Cost Unintentional Release
0
Est Cost Intentional Release
0
Est Cost Prop Damage
200000
Est Cost Emergency
0
Est Cost Other
0
Prpty
200000
Accident Psig
0
Mop Psig
0
Mop Cfr Section
Other
Mop Cfr Section Details
No Maop Established Because This Was A Well And Not A Pipeline
Accident Pressure
Pressure Did Not Exceed Maop
Pressure Restriction Ind
No
Pipeline Function
Transmission In Storage Field
Scada In Place Ind
No
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Investigation Status
No, the facility was not monitored by a controller(s) at the time of the incident
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Other Incident Cause
Cause Details
Miscellaneous
Other Type
Miscellaneous
Misc Details
Annulus Leak In Nearby Observation Well
Preparer Name
B**** W*****
Preparer Title
Director Gas Control And Storage
Preparer Email
B***********@l*****.com
Preparer Telephone
502-627-3038
Authorizer Name
G*** C******
Authorizer Title
Associate General Counsel
Authorizer Telephone
502-627-2756
Authorizer Email
G***********@l*****.com
Narrative
Gas was discovered leaking at the surface near the wellhead of the a. Scott 1a observation well on october 10th, 2017. A cement retainer was set at the bottom of the well and cement was pumped through the plug to fill wellbore and casing below the plug on october 19th, 2017 in preparation for well abandonment. A geophone array production survey (gaps) log was run on a. Scott 1a observation well on november 7, 2017 and a report was received on november 9, 2017 indicating no gas was detected leaking from the storage zone to the surface. However, gas was detected flowing from a porous zone at approximately 120 foot in depth up the outside of well casing to the surface. On november 8, 2017 lg&e was notified by the landowner of an adjacent property, outside of storage lease area, of three abandoned oil well sites leaking gas to the surface. A nearby observation well (a. Scott 2a) re-plugged in 2014 was re-entered (after drilling out cement) and a gaps log was run. The gaps log found gas flowing behind the casing from the bottom of the well to a porous formation at approximately 120 feet in depth. The a. Scott 2a well was perforated and cement squeeze procedure was performed on november 27, 2017. The well was re-entered (after drilling out cement and plugs) and cement bond and gaps logs were run on december 11th, 2017. The cement bond log indicated cement from cement squeeze procedure was successfully placed behind approximately 100 feet of the well casing. The log found the cement squeeze job successfully sealed off gas previously mitigating behind casing to the porous zone at 120 feet in depth (need to verify this is correct after receiving log report from weatherford expected on december 13th). Lg&e is continuing to monitor surface gas leaks to verify corrective actions taken have addressed leaks from gas storage zone. The estimate of gas loss in part a(10) above includes our best estimate of gas which leaked from the a scott 2a well from the date it was re-plugged in february 2014 (which is our best estimate of the date when the leak may have started) until the leak was remediated on november 27, 2017. No loss is estimated from the a scott 1a observation well because, as noted above, it was determined that no gas was leaking from the storage zone at that location.
| Report Received Date | 2017-12-15 00:00:00 |
|---|---|
| Iyear | 2017 |
| Report Number | 20170123 |
| Supplemental Number | 30480 |
| Report Type | Supplemental Final |
| Operator Id | 11824 PHMSA Enforcement |
| Name | Louisville Gas & Electric Co |
| Operator Street Address | 820 West Broadway, Po Box 32030 |
| Operator City Name | Louisville |
| Operator State Abbreviation | KY |
| Operator Postal Code | 40202 |
| Local Datetime | 2017-11-09 16:23:00 |
| Location Latitude | 37.177566 Google Maps OpenStreetMap |
| Location Longitude | -85.687109 Google Maps OpenStreetMap |
| Nrc Rpt Num | 1197549 NRC Report How to search |
| Nrc Rpt Datetime | 2017-11-17 12:46:00 |
| Commodity Released Type | Natural Gas |
| Unintentional Release | 676 |
| Intentional Release | 0 |
| Accompanying Liquid | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Shutdown Due Accident Ind | No |
| Ignite Ind | No |
| Explode Ind | No |
| Num Pub Evacuated | 0 |
| Incident Identified Datetime | 2017-11-09 16:23:00 |
| On Site Datetime | 2017-11-09 16:23:00 |
| On Off Shore | Onshore |
| Onshore State Abbreviation | Ky |
| Onshore Postal Code | 42746 |
| Onshore City Name | Hardyville, Kentucky |
| Onshore County Name | Metcalfe County |
| Designated Location | Survey Station No. |
| Designated Name | A.scott1awell |
| Pipe Fac Name | Center Gas Storage Field |
| Segment Name | A. Scott 1-A Well |
| Federal | No |
| Location Type | Operator-Controlled Property |
| Incident Area Type | Underground |
| Incident Area Subtype | Other |
| Incident Area Details | Gas Storage Field |
| Depth Of Cover | 1440 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| System Part Involved | Belowground Storage, Including Associated Equipment And Piping |
| Item Involved | Underground Gas Storage Or Cavern |
| Installation Year | Unknown |
| Material Involved | Material Other Than Carbon Steel Or Plastic |
| Material Details | Annulus Leak |
| Release Type | Other |
| Release Type Details | Annulus Leak |
| Class Location Type | Class 1 Location |
| Could Be Hca | No |
| Pir Radius | 1 |
| Heat Damage Ind | No |
| Non Heat Damage Ind | No |
| Hca Fatalities Ind | No |
| Est Cost Oper Paid | 0 |
| Est Cost Unintentional Release | 0 |
| Est Cost Intentional Release | 0 |
| Est Cost Prop Damage | 200000 |
| Est Cost Emergency | 0 |
| Est Cost Other | 0 |
| Prpty | 200000 |
| Accident Psig | 0 |
| Mop Psig | 0 |
| Mop Cfr Section | Other View CFR 49 §192 |
| Mop Cfr Section Details | No Maop Established Because This Was A Well And Not A Pipeline |
| Accident Pressure | Pressure Did Not Exceed Maop |
| Pressure Restriction Ind | No |
| Pipeline Function | Transmission In Storage Field |
| Scada In Place Ind | No |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Investigation Status | No, the facility was not monitored by a controller(s) at the time of the incident |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Other Incident Cause |
| Cause Details | Miscellaneous |
| Other Type | Miscellaneous |
| Misc Details | Annulus Leak In Nearby Observation Well |
| Preparer Name | B**** W***** |
| Preparer Title | Director Gas Control And Storage |
| Preparer Email | B***********@l*****.com |
| Preparer Telephone | 502-627-3038 |
| Authorizer Name | G*** C****** |
| Authorizer Title | Associate General Counsel |
| Authorizer Telephone | 502-627-2756 |
| Authorizer Email | G***********@l*****.com |
| Narrative | Gas was discovered leaking at the surface near the wellhead of the a. Scott 1a observation well on october 10th, 2017. A cement retainer was set at the bottom of the well and cement was pumped through the plug to fill wellbore and casing below the plug on october 19th, 2017 in preparation for well abandonment. A geophone array production survey (gaps) log was run on a. Scott 1a observation well on november 7, 2017 and a report was received on november 9, 2017 indicating no gas was detected leaking from the storage zone to the surface. However, gas was detected flowing from a porous zone at approximately 120 foot in depth up the outside of well casing to the surface. On november 8, 2017 lg&e was notified by the landowner of an adjacent property, outside of storage lease area, of three abandoned oil well sites leaking gas to the surface. A nearby observation well (a. Scott 2a) re-plugged in 2014 was re-entered (after drilling out cement) and a gaps log was run. The gaps log found gas flowing behind the casing from the bottom of the well to a porous formation at approximately 120 feet in depth. The a. Scott 2a well was perforated and cement squeeze procedure was performed on november 27, 2017. The well was re-entered (after drilling out cement and plugs) and cement bond and gaps logs were run on december 11th, 2017. The cement bond log indicated cement from cement squeeze procedure was successfully placed behind approximately 100 feet of the well casing. The log found the cement squeeze job successfully sealed off gas previously mitigating behind casing to the porous zone at 120 feet in depth (need to verify this is correct after receiving log report from weatherford expected on december 13th). Lg&e is continuing to monitor surface gas leaks to verify corrective actions taken have addressed leaks from gas storage zone. The estimate of gas loss in part a(10) above includes our best estimate of gas which leaked from the a scott 2a well from the date it was re-plugged in february 2014 (which is our best estimate of the date when the leak may have started) until the leak was remediated on november 27, 2017. No loss is estimated from the a scott 1a observation well because, as noted above, it was determined that no gas was leaking from the storage zone at that location. |
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