risk assessment, inspection and monitoring of oil wells at Horndean, Markwells Wood and Singleton

Emily Mott made this Freedom of Information request to Health and Safety Executive

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 partially successful.

Dear Health and Safety Executive,

Please can you provide the results of any risk assessments that the HSE has conducted regarding well integrity at all wells in the oil and gas development sites at Horndean, Singleton and Markwells Wood.

Please can you provide details of site monitoring and inspection of the Markwells Wood 1 and Horndean oil site.

Do you have any data or details of the well stimulation methods used at Markwells Wood or Horndean with regard to well operations (pressures used , fluid volumes during acidisation process)

With regard to Singleton, please can you provide data and analysis of the well integrity failure that occurred. If it is not classified as well integrity failure can you please provide any data or details of the incident, in particular:
1. When the well was drilled
2. When the problem was discovered
3. Data on how this incident was reported with date reported
4. Data on HSE inspection--dates site was visited
5. Correspondence between HSE and EA with regard to incident
6. How situation was remediated

Many thanks,

Emily Mott

Health and Safety Executive

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Thank you for contacting the Health and Safety Executive.

Health and Safety Executive

Dear Ms Mott


Environmental Information Request Reference No: 201702075


Thank you for your request for information about:


Risk Assessment, Inspection and monitoring of oil wells at Horndean,
Markwells Wood and Singleton.


Your request was received on 24^th January 2017 and I am dealing with it
in accordance with the Environmental Information Regulations 2004. Under
the terms of the Regulations you are entitled to a response within 20
working days of receipt.


If for any reason we are unable to meet this deadline we will keep you
fully informed of the reasons for this and will tell you when you can
expect a response.


Guidance on how the Health & Safety Executive deals with requests under
the Freedom of Information Act and Environmental Information Regulations
can be found on the HSE website at [1]http://www.hse.gov.uk/foi/index.htm


If you have any queries about this letter, please contact me. Please
remember to quote the reference number above in any future communications.


Yours sincerely



Jennifer Donaldson

FOI Officer


Jennifer Donaldson / Business Support Administrator /Energy Division.

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1. http://www.hse.gov.uk/foi/index.htm

Health and Safety Executive

1 Attachment

Dear Ms Mott,


Please see attached decision letter concerning your recent request which
we received on 24th January 2017.  Apologies for the delay in responding.


Jennifer Donaldson / Business Support Administrator /Energy Division.


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