Tag Archives: seismic monitoring

New paper on Eagle Ford play shows earthquakes induced by hydraulic fracturing

As noted in the Houston Chronical news article, a new study published this week in Geophysical Research Letters indicates that much of the recent seismicity in the Eagle Ford shale gas play in Texas is induced by hydraulic fracturing. Fasola and her colleagues found a significant correlation between completion activity on wells and earthquakes close by. They further noted a large increase in seismicity that was coincident with the operations that was over 30 times the background seismicity rate for the area in 2018. The state seismic network, TexNet, provides earthquake locations to operators and the public during business day operations, but if operators need rapid and more timely access to data, ISTI provides a Rapid Notification Service from our cloud system that is operating 24×7. Get notified of an earthquake in your area of operation as it unfolds.

If more stations are necessary, ISTI provides rental equipment and crews to deploy stations at a moments notice. We also have professional seismologists to help with regulatory issues related to seismicity. Contact us today to see how we can apply our analytics and experience to your operation’s seismicity issues.

ISTI’s Rapid Notification Service in Oklahoma helps Operators meet new Oklahoma Hydraulic Fracturing Regulations that Require Seismic Monitoring

On February 27, 2018, the Oklahoma Corporation Commission (OCC) announced new seismic monitoring requirements for minimizing felt induced seismicity from hydraulic fracturing operations in the SCOOP/STACK play. The new requirements state that operators must have access to a seismic monitoring array.  They must take action at magnitue 2.0 (Richter scale) and pause for 6 hours at magnitude 2.5. This is a 0.5 reduction in magnitude levels from previous regulations.

News articles in Oil Price, Reuters, and Bloomberg News and in local Oklahoma media outlets KFOR, Tulsa World, and The Oklahoman are already reporting that operators are taking the new regulations seriously and are installing private networks like those installed and operated by ISTI and it’s partners (HMSC, Inc and GEObit). ISTI can help operators in this region with our real-time monitoring networks for the duration of their completions or for an entire field-wide view using our Rapid Notification Service (RNS) product. ISTI’s Oklahoma and Kansas subscription based RNS provides operators with the information to act before regulators react to any events that may be caused by their completion operations.  An example is a recent 2.1 magnitude earthquake; subscribers were notified within 2 minutes after it occurred (see event map with locating stations below). As a result of the rapid information, nearby operators could modify their well treatment plans for the next stages and attempt to mitigate further larger events.

The cost of being shut-down temporarily for any nuisance earthquakes can be quite high for operators. Rapid information provided by ISTI’s service can allow operators to take action before being required to pause or curtail operations. While the hazard of earthquakes induced by hydraulic fracturing is low, there is still the potential for it to trigger larger felt earthquakes as has been observed in Canada. Operators, on the other hand, can mitigate impact to their businesses by taking proper precautions.