DI-81 – Joint Industry Program for Floating Vessel Deepwater Blowout Control

Date Submitted: November 4, 1998

Title: DI-81: Joint Industry Program for Floating Vessel Deepwater Blowout Control

Submitted by: Cudd Pressure Control, Inc. 4544 Post Oak Place Drive, Suite 280 Houston, Texas 77027 Office Number: (713) 840-7636 Fax Number: (713) 877-8961

Principal Investigator(s): Neal Adams – nadams@cudd.com David Tannich – dtannich@cudd.com Les Skinner – lskinner@cudd.com

Business Impact: Deepwater exploration successes around the world have resulted in an ever-increasing number of planned deepwater drilling and development projects. Increased activity levels unfortunately also increase the probability that a major blowout will occur in this hostile and technically challenging environment. This proposed project is designed to provide methods and equipment functional requirements for handling underwater blowouts in the deepwater environment so that any technology gaps — and ideas to close them — are identified as quickly as possible.

Technical Objectives: 1. Use mathematical modeling to study proposed blowout control handling procedures in deepwater environments. 2. Analyze case histories to compare observed blowout characteristics and contrast with modeling results. 3. Develop well control procedures for 10 most likely blowout scenarios. The procedures will include vertical intervention, offset intervention and relief well drilling. 4. Develop guidelines to handle shallow water and sand flows in a deepwater environment. 5. Identify equipment development requirements where needs exceed current equipment capability and develop conceptual equipment schematics and functionality requirements.

Methodology: 1. Extend Dr. Jerome Milgram’s work on underwater plume research to 10,000-ft water depth. His initial software code, developed for Conoco’s TLP work, will be used as a conceptual guide. 2. Study blowout behavior from the source to the mudline in an effort to identify flow characteristics impacting blowouts. 3. Identify key case histories of serious shallow and deepwater well control events that provide insight into the range of issues addressed in the project. 4. Develop conceptual equipment schematics and functionality requirements in order to develop a subsea capability for capping operations. 5. Evaluate anticipated blowout scenarios and develop blowout control proposals including vertical intervention, offset intervention and relief wells. 6. Reporting

Deliverables: 1. Monthly project reports. 2. Final report. 3. Detailed scenario development for most commonly anticipated blowouts. 4. Guidelines for handling shallow water and sand flows in a deepwater environment. 5. Detailed blowout control procedures for anticipated blowout control scenarios including procedures, equipment and personnel requirements. 6. Identification of new equipment requirements, conceptual design drawings and functionality requirements. 7. Software developed as an extension of Milgram’s work in Windows format. 8. Development of new software models, if any, to study blowout flow behavior from the source to the mudline. 9. Deliverables will be made available on hard copy, disk and via E-Mail.

Comments: Startup Date: January 1999 Project Duration: 14 months (with 3-month extension possible if Principal Investigators are on blowout jobs for an extended period) Project

Cost: $590,000.00 Cost per Participant: $29,500.00 with 20 participants