View
0
Download
0
Category
Preview:
Citation preview
Hydraulic Fracture Notices
2016-Present
Induced Seismicity Department
Oklahoma Corporation CommissionOil & Gas Conservation Division
Induced Seismicity Department
Oklahoma Corporation CommissionOil & Gas Conservation Division
1
32
104
75
86
104
86
102
133 131
101
137 135 133
159
105
117
134
148
160
169166
116
175
135
180
146
124
150
82
0
20
40
60
80
100
120
140
160
180
200
Jul Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb
2015 2016 2017 2018 2019
FracNotice Submissions
Total
Oklahoma Earthquake Count Complete CatalogEvents matching FracNotice completions records
Oklahoma Earthquake Count M2.0+ CatalogEvents matching FracNotice completions records
Oklahoma Earthquake Count M2.7+ CatalogEvents matching FracNotice completions records
Oklahoma Earthquake Count M3.0+ CatalogEvents matching FracNotice completions records
OGS complete catalog to hydraulic fracture notices – temporal match
Method – changes due to new form creation – tighter resolution
• Map well trace, EQ Events (Oklahoma Geological Survey Catalog)
• Search EQ events: 5km from trace
• EQ event occurred:• (on or after start date) & (on or before end date+ 7 days)
Start date End date End date + 7 days
T E M P O R A L M A T C HNO MATCH NO MATCH
EQ Events5km Buffer
Induced Seismicity DepartmentOklahoma Corporation Commission
Oil & Gas Conservation Division
Toolbox Spatial Temporal Spreadsheet
Induced Seismicity Department
Oklahoma Corporation CommissionOil & Gas Conservation Division
Well Correlations
SUMMARY OF REVISED WELL COMPLETION SEISMICITY PROTOCOL*
Terms: Oil and Gas Conservation Division (OGCD)
Induced Seismicity Department (ISD)
Oklahoma Geological Survey (OGS)
Operators’ actions following seismic activity within 5 km (3.1 miles) of hydraulic fracturing
operations:
• If, during active operations, the operator detects a seismic event within the monitoring area at least
2.0 ML but less than 2.5 ML, the operator shall implement its seismicity response plan.
• If magnitude is at least 2.5 ML but less than 3.0 ML the operator will notify the ISD of the event.
o If operator has not initiated its seismicity response procedures prior to a 2.5 ML event, the
operator shall pause hydraulic fracture operations for 6 hrs and a technical conference call
will be held with ISD staff and operator regarding proposed seismicity response procedures.
o If operator has initiated its seismicity response procedures prior to a 2.5 ML event, a
technical conference call will be held with ISD staff and the operator regarding proposed
seismicity response procedures, if any, and steps ISD deems necessary.
• If magnitude is at least 3.0 ML but less than 3.5 ML:
o Operator shall pause hydraulic fracture operations for 6 hours and a technical conference
call will be held with ISD staff and operator regarding proposed seismicity response
procedures.
o Upon agreement between operator and OGCD staff regarding mitigation practices and
reduced seismic activity, operator will be permitted to resume with a revised completion
procedure.
• If magnitude is 3.5 ML or greater:
o Operator immediately suspends operations.
o In-person technical conference held with OGCD staff and operator to examine whether
operation can resume with changes.
Updated February 27th, 2018
• Well Completion Protocol issued December 2016
• Update to Protocol with current action levels issued February 2018
• Requires active seismic monitoring within completion AOI
• Seismic mitigation plans can be requested from operators at any time
• Completion data requested after pauses or shutdowns enforced
Well Completion Protocol
Induced Seismicity Department
Oklahoma Corporation CommissionOil & Gas Conservation Division
OGS Earthquakes 2015-Present
Induced Seismicity Department
Oklahoma Corporation CommissionOil & Gas Conservation Division
Un
iqu
eC
ou
nt(
orig
intim
e)
Color by:
Year(origintime)
2015
2016
2017
2018
2019
Earthquake Count M2.7+ OGS Catalog | Continuous (2015-2019)
2015:5.40 2016:3.60 2017:1.70 2018:1.10 2019:1.49
origintime (Month)
ISD_EQ Monthly Update Induced Seismicity Department 2/20/2019
Un
iqu
eC
ou
nt(
orig
intim
e)
Earthquake Count M2.7+ OGS Catalog | Continuous (2015-2019)
2015:5.40 2016:3.60 2017:1.70 2018:1.10 2019:1.49
origintime (Month)
ISD_EQ Monthly Update Induced Seismicity Department 2/20/2019
Un
iqu
eC
ou
nt(
orig
intim
e)
Color by:
Year(origintime)
2015
2016
2017
2018
2019
Earthquake Count M3.0+ OGS Catalog | Continuous (2015-2019)
2015:2.48 2016:1.70 2017:0.83 2018: 0.53 2019:0.65
origintime (Month)
ISD_EQ Monthly Update Induced Seismicity Department 2/20/2019
Un
iqu
eC
ou
nt(
orig
intim
e)
Earthquake Count M3.0+ OGS Catalog | Continuous (2015-2019)
2015: 2.48 2016:1.70 2017: 0.83 2018: 0.53 2019:0.65
origintime (Month)
17
ISD_EQ Monthly Update Induced Seismicity Department 2/20/2019
Template Matching
Dots= magnitudeBlue OGS Pink USGS detections
Cumulative event count USGS Template Matched detections -dotted line
Cumulative seismic moment OGS events- Solid line
Histogram # events per hour
Preliminary template matching USGS, Golden, COBlue histogram #USGS Detections per 2 hoursRed histogram #OGS events per 2 hoursDots correlation coefficient template match
Cumulative detection count
Cumulative seismic moment (OGS events)
Tulsa Stone Quarry
• http://www.occeweb.com/News/2018/05-30-18EARTHQUAKEACTIONSUMMARY.pdf
Induced Seismicity DepartmentOklahoma Corporation Commission
Oil & Gas Conservation Division
Recommended