ANP Concludes Frade Field Accident Investigation (Brazil)

ANP Concludes Frade Field Accident Investigation (Brazil)

The ANP announced that it has concluded the investigation regarding the accident at Frade Field, which occurred on 07.11.2011, due to the drilling of the well 9-FR-50DP-RJS by Chevron Upstream Frade Ltda Brazil.

The elements evaluated and described by the ANP in its report show in detail that the accident could have been avoided if Chevron had conducted its operations in full compliance with regulations, in accordance with good oil industry and with its own manual of procedures. The company is fully aware of the contents of the report and had the opportunity to submit additional documents and records in order to clarify some issues raised in the Agency’s investigation.

For the 25 (twenty five) irregularities during the investigation, the company was regularly assessed. According to Law 9.847/99, the limit of the fine that can be applied is $ 50,000,000.00 (fifty million). Once the investigation was complete, the ANP is continuing the prosecution of the proceedings, which will be completed in the next 30 (thirty) days.

The research team, composed entirely by servants of ANP, was based on verified facts and records seized at the headquarters of Chevron aboard the Frade FPSO and rig Sedco 706, which performed the drilling of the well at the time of the accident. After appropriating these documents during the investigation, the ANP could analyze in detail the events and identify the causes that led to the spilling of approximately 3,700 barrels of oil, at a distance of about 120 km off the coast of the State of Rio de Janeiro.

In summary, it was found that: (i) Chevron was not able to correctly interpret the geology and the local fluid dynamics, although there are 62 wells drilled in the Frade Field, and evaluated, the wrong way, the model of reservoir pressure in the N560 region where the kick, (ii) the passage of the pressurization of the reservoir reached the well drilling was caused by Chevron itself, through the injection well 8-FR-29D-RJS, which artificially created the conditions for the accident came to fruition (iii) the company dismissed the results of tests of resistance training three previously drilled wells in the same region, which indicate the need for amendment of the project, (iv) Chevron contradicted its own manual control wells, using an uncertainty of less than the pore pressure for a well established investigative, (v) the settlement of the last shoe with shallow (600 meters from the seabed), the situation that presented itself, contributed to the lack of the well could have the result leakage through the seabed, and (vi) although there is strong evidence of an underground blowout, Chevron took to recognize the situation, resulting in the initial adoption of methodology ineffective to control the well. Chevron had identified the underground blowout immediately, the volume of oil released at sea would have been significantly lower.

Thus, there is no doubt that if Chevron had properly managed the uncertainties of geology, the risk analyzes performed in accordance with the rules and respected the basic assumptions of safety, the accident could have been avoided.

Subsea World News Staff , July 20, 2012;  Image: ANP

Share this article

Follow Subsea World News

Events>

<< May 2017 >>
MTWTFSS
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31 1 2 3 4

OGA 2017

OGA 2017 is the most beneficial way to meet, discuss and acquire the latest in the Oil & Gas industry! It is also;…

read more >

IMCA ROV SEMINAR

This seminar is designed to assist IMCA members in dealing with these, with a programme of technical and operational topics affecting…

read more >

Offshore Wind Energy 2017

In 2017, EWEA and RenewableUK will join forces to bring you the greatest conference and exhibition Europe has ever known in the history…

read more >

UTC 2017

The subsea industry has, as all other parts of the oil & gas industry, been seriously rattled by the most severe downturn in the hydrocarbon energy era. However, the realization of what hit us and actions to be taken to sustain a healthy and profitable future is still on-going – unfortunately with thousands of colleagues paying the price by losing their job as one of the most severe consequences. At this time, there are signs that we have reached bottom in terms of most industry indicators, but few experts expect a sharp recovery. Many seem to believe that a slow recovery is what the industry needs in order to avoid an unsustainable capacity build-up, as seen in the period after the financial crisis. Considering the uncertainty of what the future will bring, this year’s UTC Program Committee have decided to challenge all of us to present ideas, experiences, technological innovations, business models and execution models for how to shape our subsea future and explain how and why subsea is the future.
UTC welcomes abstracts based on the topics listed below. If selected, please consider writing a paper in addition to the UTC presentation. From 2017, UTC papers will be published in an international database.

More info

read more >