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British Gas Egypt After Action Review– March 2013

British Gas Egypt After Action Review– March 2013. MPO Flow diagram Tap Root Investigations BG February 2013 NSD Operations 19 th February 2013 pressure trapped behind protective cap on 2 nd connection.( Total 7 connections)

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British Gas Egypt After Action Review– March 2013

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  1. British Gas Egypt After Action Review– March 2013 • MPO Flow diagram Tap Root Investigations BG February 2013 • NSD Operations 19th February 2013 pressure trapped behind protective cap on 2nd connection.( Total 7 connections) • NSD Operations 23rd & 24th February 2013 3 connections with loss of SPP and return flow • Casual Factors Identified, Proposed Recommendations & Verification • Needs Improvement • Support Data

  2. TapRoot Investigations – March 2013 Onsite Supervisor informs DSV of problems Review Process Incident Reports etc., Received Client Visit & Review A Presentation of corrective action plan Onsite Supervisor informs MPO Management Consolidate Data / Fact Find • Ops Team & QHSE, commence reviewing reports. Implementation Initiate internal review with crews NI

  3. NSD Connection 19th February TapRootInvestigation 11.35hrs hrs23rd Feb 2013 04.30 hrs to 16.00hrs 19thFeb 2013 03.40 hrs 19th Feb2013 03.00 hrs 19th Feb 2013 Successful NSD Connection with No Flow Attempt NSD Connection Unable to remove protective Cap From NSD Valve Further 5 successful Connections Successful Connection but SPP pressure dropped and no return flow Flow conditions on opening of N1 leading to pressure & flow drop ? B A CF #2 NI 1 CF #1 Average NSD connection time 8.3 minutes RAM Valve N1 opening too Fast , Kelly Hose empty, verify IBOP Open NI 2 Crew performed normal connection. Laid down sub E4-324 to be back loaded for investigation Operator Crew Change CF #2 NSD Operator attempted to fine tune Opening of N1 by adjusting control valve No time allowed Sub to arrive in Cairo 15th March for disassembly Report to follow NI

  4. NSD Connection 19th February TapRootInvestigation 14:45hrs 23rd & 03:56 24th Feb 2013 07:58hrs 24thFeb 2013 Successful Connections but SPP pressure dropped and no return flow Meet with BG, WFT and Blade to discuss management of any change Flow conditions on opening of N1 leading to pressure & flow drop Recommendation by MPD Supervisor to add extra pipework B NI 2 NI 3 Offline testing of 7.5k RAM taking place in Malaysia to check the control systems valve staging – Verified staged 18 second opening – 7 second closing Proposal reviewed by MPO and discounted as not effective due to same fluid flow problem would still exist Kelly Hose Shock witnessed by operator. Indicative of empty kelly hose CF #4 NI 4 The use of chokes in the equalization procedure have been trialed previously and found to lead to excessive time and multiple plugging incidents CF #3 Check all flow paths to verify correct bleed off procedures Successful Connections are achievable if fluid is retained within the kelly hose after pressure is bled off using N3 and prior to opening N1 Preventing the need to fill the entire SP up to the top drive . Fine Tune control valve to crack and Equalize N1.Reduce erosional flow via N4 NI

  5. NSD Casual Factors Identified & Proposed RecommendationsTapRoot Investigation – March 2013

  6. NSD Casual Factors Identified & Proposed RecommendationsTapRoot Investigation – March 2013

  7. Needs Improvement Factors Identified & Proposed RecommendationsTapRoot Investigation – March 2013

  8. Needs Improvement Factors Identified & Proposed RecommendationsTapRoot Investigation – March 2013

  9. Support Data Screenshot detailing SPP & Flow drop Make Up Quick Connector to the connection valve Flow path through NSD hose and TDS Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Make Connection while circulating through the NSD hose and connection Valve Pressure drop incident while diverting back flow through Kelly hose and TDS Flow path is now conventionally through kelly hose and TDS after bleeding off the NSD hose

  10. Support Data Screenshot detailing SPP & Flow drop Reduce Flow rate to 550 GPM Make Up Quick Connector to the connection valve Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Flow path through NSD hose and TDS Make Connection while circulating through the NSD hose and connection Valve Pressure drop incident while diverting back flow through Kelly hose and TDS Flow path is now conventionally through kelly hose and TDS after bleeding off the NSD hose

  11. Support Data Screenshot detailing SPP & Flow drop Support Data Reduce Flow rate to 550 GPM Make Up Quick Connector to the connection valve Flow path through NSD hose and TDS Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Make Connection while circulating through the NSD hose and connection Valve Pressure drop incident while diverting back flow through Kelly hose and TDS Flow path is now conventionally through kelly hose and TDS after bleeding off the NSD hose

  12. Support Data Screenshot detailing SPP & Flow drop Support Data Reduce Flow rate to 550 GPM Reduce Flow rate to 550 GPM Make Up Quick Connector to the connection valve Make Up Quick Connector to the connection valve Flow path through NSD hose and TDS Flow path through NSD hose and TDS Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Make Connection while circulating through the NSD hose and connection Valve Make Connection while circulating through the NSD hose and connection Valve Pressure drop incident while diverting back flow through Kelly hose and TDS Flow path is now conventionally through kelly hose and TDS after bleeding off the NSD hose

  13. Support Data Screenshot detailing SPP & Flow drop Reduce Flow rate to 550 GPM Make Up Quick Connector to the connection valve Flow path through NSD hose and TDS Flow path through NSD hose only after bleeding off Standpipe and kelly hose. Frictional Pressure loss caused by NSD system is 360 psi ( Through N2 leg on NSD RAM, NSD hose and connection valve) Make Connection while circulating through the NSD hose and connection Valve Flow path is now conventionally through kelly hose and TDS after bleeding off the NSD hose Pressure drop incident while diverting back flow through Kelly hose and TDS

  14. Support Data • Statements and interviews conducted with all Field Staff • MCP Testing in Labuan • Review of Halliburton Data Logger flow out fingerprinting • Historical data and NSD Connection database. • NSD/TCD Data charts.

  15. Feedback QUESTIONS??

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