❓ Hon Alison Xamon asks about the frequency and timing of compromised oil well casings in WA. The Department of Mines and Petroleum declines to provide specific data due to resource constraints, but acknowledges instances of corrosion and remediation.
AnsweredQoN 5495Legislative Council
QuestionView source ↗
I refer to oil wells in Western Australia, and I ask -
(1) How many instances of oil well-casings, or the casing cement being compromised occurred in -
(a) 1996 - 2000;
(b) 2001 - 2005;
(c) 2006 - 2010;
(d) 2011; and
(e) to date in 2012?
(2) What was the average time after well completion until the casing or cement was compromised?
(1) How many instances of oil well-casings, or the casing cement being compromised occurred in -
(a) 1996 - 2000;
(b) 2001 - 2005;
(c) 2006 - 2010;
(d) 2011; and
(e) to date in 2012?
(2) What was the average time after well completion until the casing or cement was compromised?
AnswerView source ↗
Answered
12 June 2012
Responded by
Minister for Mines and Petroleum
Response time
42 days
(1) - (2) Companies that drill and operate conventional and unconventional gas wells in Western Australia are required to monitor the integrity of the well to identify and take remedial action if the well is compromised in any way, including issues with the well casing and casing cement. Daily drilling reports, monthly production reports and reporting of incidents during production and well abandonment are required. Approval from the Department of Mines and Petroleum is required to undertake all major work on a well, including remedial work.
The Department of Mines and Petroleum would need to check all files for all wells to provide an answer to these questions. This request would unduly impact on other critical work for the Department. If there is a specific instance the information could be provided more quickly.
However, the Department can confirm there have been instances where corrosion of the well has been identified, for example, because of sand abrasion, and this has been remediated to maintain the integrity of the well.
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The Department of Mines and Petroleum would need to check all files for all wells to provide an answer to these questions. This request would unduly impact on other critical work for the Department. If there is a specific instance the information could be provided more quickly.
However, the Department can confirm there have been instances where corrosion of the well has been identified, for example, because of sand abrasion, and this has been remediated to maintain the integrity of the well.
Notice: This document is created or edited using unregistered or evaluation copy of rtLib valid for testing or development purposes only. To use it for productive or any other purposes please register it. You may purchase the license on
http://www.rtlib.com
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