Seismic activity at PNR, OCTOBER 18th TO 22nd 2018

richard parker made this Freedom of Information request to Oil and Gas Authority

This request has been closed to new correspondence from the public body. Contact us if you think it ought be re-opened.

The request was refused by Oil and Gas Authority.

Dear Oil and Gas Authority,

I understand from the BEIS, that your department is responsible for the monitoring of seismic activity at the Cuadrilla fracking site on Preston New Road.

Could you please advise as if these seismic events are as expected and on induced fracture lines or whether they are on faults or seismic discontinuities.

Please could you ascertain what the pressure cycling of the well is during the frack cycles at the time. Could you please advise on the pressures, volumes,durations and the instances of opening and closing of the frack sleeves.

Yours faithfully,

richard parker

OGA FOI requests, Oil and Gas Authority

1 Attachment

Dear Mr Parker,

Please find attached a response from the OGA to your FOI request.

Yours sincerely

FOI Requests

Oil and Gas Authority is a limited company registered in England and Wales with registered number 09666504 and VAT registered number 249433979. Our registered office is at 21 Bloomsbury Street, London, United Kingdom, WC1B 3HF. For information about how we process data and monitor communications please see our Privacy Statement and for terms of use please see our Terms and Conditions, both available on our website.

show quoted sections

Dear OGA FOI requests,

Thankyou for your reply, ref FOI 2018 0062.pdf.

From this reply, I understand that the requested information is only legally needed to be published 6 months after the completion of the hydraulic fracturing operations but the OGA in the 'Public Interest is intending to publish the information once it has been received from Cuadrilla.

However, I am confused as to the statement 'The OGA considers that it is in the public interest not to make the information available prior to that date, to provide for the analysis of the information to be finalised in a closed user group to ensure that scientific rigour is maintained'.

In the first instance, this statement appears to contradict the role of the OGA in monitoring seismic activity. I would expect the OGA to be actively involved in an ongoing review of the induced seismicity rather than allowing Cuadrilla to induce seismic disturbances of any level. The only remit appears to be that Cuadrilla suspend operations for 18 hours after ANY level over 0.5 on the Richter scale. To permit Cuadrilla to continue fracking presumably without any OGA overseer of their 'closed user group' does not imply the 'gold plated' regulations promised to 'The Public' are being delivered. I suggest that the phrase 'scientific rigour is maintained' effectively translates to permitting the operator to proceed with no role of vigilance from the OGA.

Secondly, with the suspension of the hydraulic fracking operations as of early November, I would expect that there has now been ample time for Cuadrilla to review the collated seismic and geophysical data to report on the fracking operations performed upto the latent seismic event of 0.7 on the 4th November 2018, that appears to have signified the end of the initial fracking activity at Preston New Road. Presumably, the OGA will now be insistent on receiving an interim report from Cuadrilla detailing the operations, induced seismicity and interpreted geology from the geophysical data. Please publish this data once it has been received from Cuadrilla. Please advise where specifically where the data is to appear. Currently, data such as hydraulic fracture planx appears via the Environment Agency website on a dedicated portal.

Yours sincerely,

richard parker

Dear OGA FOI requests,

I have also recently received a reply to a FOI to the Environment Agency titled 'Fracture Growth at PNR' , their reference 181029/OB01. One section of their reply is detailed below:-
"
Q. Please advise as to whether there is evidence to suggest that the
fracking fluid has impregnated further into the geology, particularly on
the faults/seismic discontinuities labelled SD4, SD5 and SD6 in the
hydraulic fracture plan.

A. The pattern of microseismic (MSM) event locations gives evidence that
the fractures or minor fault reactivations have not extended as far as the
Permit Boundary. The OGA has compared the position of the larger TLS
events with the position of possible faults, acknowledged in the HFP as
‘seismic discontinuities’ SD4, 5 and 6. If you would like further
information on this please contact the OGA.
"
Please could you provide this information.

Yours sincerely,

richard parker

OGA FOI requests, Oil and Gas Authority

1 Attachment

Dear Mr Parker,

Please find attached a response from the OGA to your FOI request.

Yours sincerely

FOI Requests

Oil and Gas Authority is a limited company registered in England and Wales with registered number 09666504 and VAT registered number 249433979. Our registered office is at 21 Bloomsbury Street, London, United Kingdom, WC1B 3HF. For information about how we process data and monitor communications please see our Privacy Statement and for terms of use please see our Terms and Conditions, both available on our website.

show quoted sections