Archive for the ‘well control incidents’ Category
Halliburton Stunner
Posted in accidents, well control incidents, tagged accidents, blowouts, Deepwater Horizon, drilling, Gulf of Mexico, macondo, National Commission, offshore oil, oil spill, safety, well control on November 8, 2010| Leave a Comment »
Statoil Publishes Report on Gullfaks C Incident
Posted in accidents, well control incidents, tagged Gullfaks, Norway, safety, Statoil, well control on November 8, 2010| Leave a Comment »
The incident occurred on 19 May 2010. We appreciate Statoil’s timely completion and public release of the report. The report is in Norwegian, but an English summary is provided.
What happened:
- A platform well on Gullfaks C was drilled in managed pressure drilling (MPD) mode to a total depth of 4800 meters.
- During the final circulation and hole cleaning of the reservoir section, a leak in the 13 3/8” casing resulted in loss of drilling fluid (mud) to the formation.
- The loss of back pressure led to an influx of hydrocarbons from the exposed reservoirs until solids or cuttings packed off the well by the 9 5/8” liner shoe.
- The well control operation continued for almost two months before the well barriers were reinstated.
Statoil’s near-term action items:
- Develop new acceptance criteria and best practices for MPD on Gullfaks.
- Update pressure prognoses for the field.
- Document that the shear ram is capable of cutting the drill string.
- Change the shift relief plan for the Drilling Supervisor and Toolpusher on Gullfaks C.
- Review the procedures for communication and mustering with the emergency preparedness organization.
National Commission Hearing: 8-9 November
Posted in accidents, well control incidents, tagged accidents, blowouts, Deepwater Horizon, drilling, Gulf of Mexico, macondo, National Commission, offshore oil, oil spill, safety, well control on November 7, 2010| Leave a Comment »
The hearing will focus on the causes of the Deepwater Horizon explosion and will be broadcast live on C-SPAN2. The panelists and speakers are listed here.
Day 139 of the Montara Report Vigil
Posted in accidents, well control incidents, tagged Australia, Minister Ferguson, Montara, NOPSA on November 4, 2010| Leave a Comment »
Those who read this obscure blog regularly know that we have been railing about the release of the Montara Inquiry Report since it was delivered to Energy Minister Ferguson on 18 June 2010. The report has now sat on the Minister’s desk for nearly twice as long as the Montara well flowed into the Timor Sea at an announced rate (cough, cough) of 400 barrels per day.
BOE wants to thank Minister Ferguson for helping teach us the virtue of patience, an important life skill that some of us had not previously mastered. In our newly enlightened state, we are becoming more observant. As a result, we noticed that the Australian Senate has already passed legislation strengthening the National Offshore Petroleum Safety Authority (NOPSA).
After reviewing information about the legislation here and here, I am a bit confused about the changes being enacted. However, if the concerns (below) of Tina Hunter, an Assistant Professor at Bond University who had previously submitted testimony to the Montara Inquiry, have not been yet been addressed, Parliament needs to revise the legislation. Multiple regulators are a problem, not a solution. (The US needs to take notice.)
These legislative changes proposed will still split the responsibilities for Well Operations Management Plans between NOPSA and the responsible Delegated Authority (who assesses the well design and construction and drilling applications)….Furthermore, the regulatory amendments do not consider the environmental regulation of well operations and integrity, which also remains with the relevant Commonwealth or State Authority. Therefore, whilst in principle these proposed legislative amendments will provide benefits for the regulation of well integrity, it will still split the regulatory responsibility of well integrity between multiple regulators. Tina Hunter
Macondo spill cost estimate is now $40 billion
Posted in accidents, well control incidents, tagged accidents, blowouts, bp, Deepwater Horizon, drilling, Gulf of Mexico, macondo, offshore oil, oil spill, safety, well control on November 2, 2010| Leave a Comment »
BP is now estimating total Macondo response and damage costs at $39.9 billion. I would guess that only 4 or 5 other operating companies could have survived this type of hit.
Hopefully, every offshore operator is keeping this in mind when formulating safety management programs and training, research, and standards budgets. Companies claiming that such disasters couldn’t happen to them are simply demonstrating that they could, because no company with a proper safety culture would make such a statement.
Chevron tests point to flawed Macondo cement
Posted in accidents, well control incidents, tagged accidents, blowouts, cement, Chevron, Deepwater Horizon, drilling, Gulf of Mexico, macondo, National Commission, safety, well control on October 28, 2010| Leave a Comment »
Chevron’s report states, among other things, that its lab personnel were unable to generate stable foam cement in the laboratory using the materials provided by Halliburton and available design information regarding the slurry used at the Macondo well. Although laboratory foam stability tests cannot replicate field conditions perfectly, these data strongly suggest that the foam cement used at Macondo was unstable. This may have contributed to the blowout.
Further:
The documents provided to us by Halliburton show, among other things, that its personnel conducted at least four foam stability tests relevant to the Macondo cement slurry. The first two tests were conducted in February 2010 using different well design parameters and a slightly different slurry recipe than was finally used. Both tests indicated that this foam slurry design was unstable.
Two Interesting Items from Upstream
Posted in accidents, well control incidents on October 26, 2010| Leave a Comment »
1. BP CEO Bob Dudley pokes media, politicians and oil industry:
A great rush to judgment by a fair number of observers before the full facts could possibly be known, even from some in our industry.
Comment: Bob Dudley is correct, but the attacks and distortions were entirely predictable. Human responses to high-profile disasters will always be excessive, and you won’t have a lot of friends when you are a public target. Add this negative outcome to the list of more important reasons for avoiding offshore disasters – protecting workers, preventing pollution, and preserving assets.
2. PTT and Indonesia continue to battle over Montara damages.
Comment: This will be a long and interesting international battle. I wonder if PTT has any assets in Indonesia? I can’t really tell from their website.
Drilling Ban to End This Week
Posted in accidents, drilling, Offshore Energy - General, well control incidents, tagged accidents, blowouts, Deepwater Horizon, drilling, Gulf of Mexico, macondo, moratorium, safety, well control on October 12, 2010| Leave a Comment »
The White House said Tuesday the government will lift a moratorium on deep water oil drilling in the Gulf of Mexico “very soon” – likely this week. Washington Post
Too many distractions before Macondo blew?
Posted in accidents, well control incidents, tagged accidents, Australia, blowouts, BOEMRE, Coast Guard, Deepwater Horizon, drilling, Gulf of Mexico, macondo, Montara, safety, well control on October 9, 2010| Leave a Comment »
There were so many simultaneous activities — starting with the displacing of mud to the pumping of fluids overboard — it was difficult to see what was going on. John Gisclair, Sperry Sun (see Times Picayune summary of yesterday’s BOEM-Coast Guard hearing)
John Gisclair
Too much at once? Hurrying to finish the job? Cost concerns? No one in charge? Distracted by managers visiting the rig? One or more of these human and organizational factors appears to have contributed to the blowout.
Similarly, the rigid commitment to “batching” the development wells (for efficiency reasons) seems to have been a factor contributing to the Montara blowout in the Timor Sea. If after removing the corrosion cap on the production casing, the work on the H1 well had continued in series (i.e. casing tied-back, BOP installed, and well secured) before moving on to another well, this blowout may have been prevented.
At both Macondo and Montara, time pressures (perceived or real) may also have affected the way negative-pressure tests were conducted or assessed. These tests should have detected the influx of hydrocarbons via the shoe track.
National Commission Releases 4 Draft Staff Papers
Posted in accidents, well control incidents, tagged accidents, blowouts, Deepwater Horizon, drilling, Gulf of Mexico, macondo, National Commission, offshore oil, safety, well control on October 6, 2010| Leave a Comment »
Bud's Offshore Energy (BOE) 