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Archive for the ‘accidents’ Category

Safety and Environmental Management Systems

This rulemaking will incorporate in its entirety and make mandatory the AmericanPetroleum Institute’s Recommended Practice 75, Development of a Safety andEnvironmental Management Program for Offshore Operations and Facilities, with respectto operations and activities under the jurisdiction of BOEMRE. This final rule will applyto all OCS oil and gas and sulphur operations and the facilities under BOEMREjurisdiction including drilling, production, construction, well workover, well completion,well servicing, and DOI pipeline activities.

The rule will become effective on November 15, 2010.

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Decision Making Within the Unified Command

The Use of Surface and Subsea Dispersants During the BP Deepwater Horizon Oil Spill

The Challenges of Oil Spill Response in the Arctic

The Amount and Fate of the Oil

 

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Absent live streaming or television, the Times Picayune seems to be providing the best coverage of the Coast Guard – BOEM Macondo hearings in New Orleans.  While the legal sparring has attracted the most press interest, two other items in this Times Picayune article caught my attention.

Part of Keplinger and Fleytas’ duties was to monitor indicators of gas detectors and alarms from the bridge. Keplinger was busy showing visiting BP and Transocean officials a video-game-style simulator for 45 minutes to an hour before the explosions, he said, but he insisted that Fleytas was keeping him abreast of readouts of the rig’s systems.

Comment: Just as school teachers shouldn’t have been flying in the space shuttle, “tourists” shouldn’t have been visiting a complex drilling operation when the crew was in the process of setting production casing and suspending a potentially dangerous well. While the visit was well-intended, the last thing the crew needed on that night was to be distracted by a group of corporate executives.  The distraction they caused was comparable to driving on a dangerous highway while getting text messages from your boss. Visiting windows should be limited to relatively low-risk operations (e.g. when drilling ahead prior to reaching target intervals), and these windows should immediately close if complications develop.

Keplinger flashed some anger at Capt. Curt Kuchta, captain of the Deepwater Horizon rig, during his testimony. He noted that a fellow rig worker, Chris Pleasant, had to ask Kuchta three times whether to disconnect the rig from the wellhead before he got the go-ahead.

Comment: One of the benefits of drilling from a floating and dynamically positioned rig is the ability to move off location if trouble arises.  The failure to disconnect the riser and move away from the well at the first indication of flow contributed significantly to the tragic consequences.  The technical and human factors that prevented such a disconnect must be thoroughly examined.

Further comment: The absence of live streaming of these important safety hearings is inexcusable.  If a senator or governor were testifying, I expect that the cameras would be there.

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  • C-SPAN has opted not to cover this weeks BOEMRE – Coast Guard Macondo hearings.  Instead, they are presenting recordings of political rallies, assorted senatorial and gubernatorial candidate debates, and similar fare.  In other words, all three channels will be dedicated to the usual political posturing that already receives non-stop national coverage, and the investigation into one of the more significant accidents in US history will be ignored.
  • Why does it take 3 weeks to post the transcripts of these hearings? The Australians posted each Montara transcript within hours after the day’s session ended.

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Capt. Hung Nguyen, David Dykes, and Jason Mathews question the witness. Sylvia Murphy and Kirk Malstrom monitor attentively from the 2nd row.

The panel that is most closely investigating the technical and operational aspects of the Macondo blowout reconvenes on Monday morning at 0800 CT in New Orleans.

I would assume that one of the CSpan stations will be covering the hearings, but their broadcast schedule for next week has not yet been posted.

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Today, BOEM released fact sheets describing the Drilling Safety and Safety and Environmental Management (SEMS) rules. The complete documents will be available for review as soon as they are published in the Federal Register.

Based on the fact sheet, the Drilling Safety Rule does not appear to include any significant surprises.  The rule seems to be generally consistent with the recommendations in Secretary Salazar’s 27 May Safety Measures Report to the President (the “30-Day Report”).  This is an Interim Final Rule that will be effective upon publication.

According to the fact sheet, the SEMS Rule will incorporate all elements of API RP 75 into BOEM regulations.  This is an improvement, in my opinion, from the proposed rule which incorporated only 4 elements of RP 75.  The effective date for this rule is not indicated in the fact sheet.

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BP has announced a new safety unit and other organizational changes. For more on the changes, see the Upstream report.

From a BOE perspective, the most interesting comment in the BP release was this Bob Dudley quote:

Our response to the incident needs to go beyond deepwater drilling. There are lessons for us relating to the way we operate, the way we organize our company and the way we manage risk.

I hope the rest of the offshore industry has the same view and is prepared to work together to assess and mitigate operational risks. To date, industry has reacted impressively to issues raised since the Macondo well blew out on 20 April.  However, what is being done to identify operational and safety risks that could trigger the next disaster? When will complete, consistent, and verified international incident data be collected and published?.  How do you manage risks without such data?  Why weren’t the lessons from Montara quickly disseminated around the world?  If they were, Macondo may have been prevented.

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Aban Pearl listing off Trinidad in August 2009

For those who haven’t been following this saga, the Aban Pearl, a semi-submersible drilling rig, sank off of Venezuela on 13 May 2010. The seas were calm and the skies were clear, so the cause of the accident is a mystery.  We have learned from a reliable and knowledgeable source that PDVSA, the national oil company of Venezuela, has conducted an official investigation to determine the cause(s) of this accident.  We urge them to release their report so that all may benefit from their findings.

While searching the web for other information on the Aban Pearl, I was surprised to find that the rig was reported to be listing offshore Trinidad & Tobago in August 2009, and that assistance was requested from the T&T Coast Guard. This incident occurred nine months before the rig sank offshore Venezuela.

According to Public Relations Officer at the T&T Coast Guard Lt Kirk Jean Baptiste, the T&T Coast Guard received a distress call from the rig around 2.45 pm. “The Coast Guard received a call that one of the flotation devices on the rig was taking in water which caused the rig to lean on one side,” he said. Sources said it belonged to an Indian company, but was registered in Singapore. They said it was not working, but just passing through T&T waters. Rigs are normally moved with the help of other boats.

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We have commented frequently about the similarities between the Montara and Macondo blowouts, particularly the root cause casing shoe issues. In this post, Colin Leach draws attention to the float shoe and collar issues that permitted oil and gas to enter both wells. Click here to view the full post.

The Bly report (page 70) noted some significant “inconsistencies” in the operation of the float shoe/float collar (see full post). This is so similar in nature to the “inconsistencies” in the 9 5/8″ cement job on the Montara well to be scary. The bottom line is that both disasters could have been prevented if these “inconsistencies” had been recognized and additional barriers placed above the float collar. In fact even if there are no “inconsistencies”, the placing of an additional barrier or so seems like an exceptionally prudent step, which would not take that much time or effort.

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As previously posted (July 27, 2010), deep water had little to do with the well integrity problems and other contributing factors leading to the Macondo blowout. The Bly (BP) report further confirms this position.

Of the eight key findings in the Bly report (listed below), only number 4 could be considered to be more of a deepwater issue.  The BOP failures may also have been influenced by deepwater factors.  However, as previously noted, surface BOPs have a much higher failure rate than subsea stacks.

While the Montara blowout was in relatively shallow water, slight variations of findings 1 through 4 were the primary causes of that accident.

BP findings:

  1. The annulus cement barrier did not isolate the hydrocarbons.
  2. The shoe track barriers did not isolate the hydrocarbons.
  3. The negative-pressure test was accepted although well integrity had not been established.
  4. Influx was not recognized until hydrocarbons were in the riser.
  5. Well control response actions failed to regain control of the well.
  6. Diversion to the mud gas separator resulted in gas venting onto the rig.
  7. The fire and gas system did not prevent hydrocarbon ignition.
  8. The BOP emergency mode did not seal the well.

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