uh-oh…

Posted on Tuesday 4 May 2010

I’m really glad Marcy picked up this ball. I saw Halliburton‘s name on this story and winced. That’s what Halliburton does – the engineering part of oil wells. But I hadn’t seen their statement:
Halliburton: We Worked to Spec
By: emptywheel

May 4, 2010

As oil continues to gush into the Gulf, I’ve been haunted by the statement Halliburton put out about the Deepwater Horizon spill. Here’s the statement, dated April 30, in its entirety.
    Halliburton [NYSE: HAL] confirmed today its continued support of, and cooperation with, the ongoing investigations into the Deepwater Horizon drilling rig incident in the Gulf of Mexico earlier this month. Halliburton extends its heartfelt sympathy to the families, friends and our industry colleagues of the 11 people lost and those injured in the tragedy. As one of several service providers on the rig, Halliburton can confirm the following:
    1. Halliburton performed a variety of services on the rig, including cementing, and had four employees stationed on the rig at the time of the accident. Halliburton’s employees returned to shore safely, due, in part, to the brave rescue efforts by the U.S. Coast Guard and other organizations.
    2. Halliburton had completed the cementing of the final production casing string in accordance with the well design approximately 20 hours prior to the incident. The cement slurry design was consistent with that utilized in other similar applications.
    3. In accordance with accepted industry practice approved by our customers, tests demonstrating the integrity of the production casing string were completed.
    4. At the time of the incident, well operations had not yet reached the point requiring the placement of the final cement plug which would enable the planned temporary abandonment of the well, consistent with normal oilfield practice.
    5. We are assisting with planning and engineering support for a wide range of options designed to secure the well, including a potential relief well.
    Halliburton continues to assist in efforts to identify the factors that may have lead up to the disaster, but it is premature and irresponsible to speculate on any specific causal issues. Halliburton originated oilfield cementing and leads the world in effective, efficient delivery of zonal isolation and engineering for the life of the well, conducting thousands of successful well cementing jobs each year. The company views safety as critical to its success and is committed to continuously improve performance. [my emphasis]
HAL’s first concern, in its statement, was to invoke “its cooperation” in the investigation. Only after that did it mention the casualties from the explosion. Then, it described (sort of) its role on the rig, stating that their work was:
  • Consistent with that utilized in other similar applications
  • In accordance with accepted industry practice approved by our customers
  • Consistent with normal oilfield practice
You get the feeling that HAL wants to cement [heh] the impression that everything it was doing on the rig was all standard practice? You get the feeling that HAL wants you to know that everything they were doing on the rig had been approved by BP? And it took them a full week to come up with that statement. All of which leads me to wonder whether–though mind you, I’m just wondering – HAL [which did, after all, originate oilfield cementing] did something that may well have met BP’s specifications, but which HAL, with its expert knowledge of what it should do in conditions like those at the Deepwater Horizon site, might be rethinking. That is, the tone and content of their statement suggests HAL is preparing a defense that it met spec, regardless of whether that spec was appropriate to the conditions involved.
and there’s this…
BP Fought Safety Measures at Deepwater Oil Rigs
Owner of Louisiana Oil Well Objected to System That Would Have Shut Off Spill
ABC News

By MATTHEW MOSK, BRIAN ROSS and RHONDA SCHWARTZ
Apr. 30, 2010

BP, the company that owned the Louisiana oil rig that exploded last week, spent years battling federal regulators over how many layers of safeguards would be needed to prevent a deepwater well from this type of accident.

One area of immediate concern, industry experts said, was the lack of a remote system that would have allowed workers to clamp shut Deepwater Horizon’s wellhead so it would not continue to gush oil. The rig is now spilling 210,000 gallons of oil a day into the Gulf of Mexico.

In a letter sent last year to the Department of the Interior, BP objected to what it called "extensive, prescriptive regulations" proposed in new rules to toughen safety standards. "We believe industry’s current safety and environmental statistics demonstrate that the voluntary programs…continue to be very successful." CLICK HERE TO READ THE LETTER

… A second area of focus emerging Friday involved the cement casing that was supposed to seal the well and prevent gaps from opening between the outside of the well pipe and the inside of the hole drilled into the sea floor. If cement is not poured properly, oil and natural gas can escape – a cause of more than a dozen previous well blowouts in the Gulf.

House Energy and Commerce Chairman Henry Waxman Friday sent a letter to Halliburton, the company responsible for pouring the cement seal, asking company executives to brief committee investigators on conditions at the rig, and preserve all documents relating to their work on the sea floor.

Elmer Danenberger, an expert on offshore drilling who retired from the U.S. Department of the Interior in January, told ABC News he is worried that "lack of attention" during the pouring of the cement could be to blame.

"With these cementing operations it’s just a matter of not being attentive enough," he said. "What you want is a closed system. You want the cemented pipe totally sealing the well bore. If you don’t have that, you have problems"…
I agree with Marcy. Halliburton is being very careful in their statement. What worries me is that they weren’t so careful in their cementing of the well. In googling around about this process, I’m aware that I’m out of my depth, though this article in Offshore [Optimizing cement systems for specific well conditions] gave me a shudder as it described some of the things that might go wrong with the cementing process. Cementing involves sealing the "entrance wound" made by the drilling process. I don’t understand what this graph from the article really means, but I do understand the note on it:
It says, "When the cement sheath fails, it does so catastrophically."

I don’t know what happened here. Whatever it was, it happened as they were cementing the entrance hole around the delivery pipeline to the surface. BP had apparently opted out of some kind of cut-off valve. And Halliburton was the company apparently doing the concreting. Whatever happened, it sounds to me like a screw-up. Score at the end of the first quarter:

    ACT OF GOD: 0
    ACT OF MAN: 2
  1.  
    October 29, 2010 | 5:55 PM
     

    […] the ocean floor atop a well and is supposed to contain a well bore breach, also failed… [see uh-oh… on May 4, 2010] When the details of the April 20th Deepwater Horizon Explosion started being […]

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