Drilling of Gorae D-1, Daewoo, South Korea

The Gorae D‐1 was a vertical exploration gas well drilled In the Block 6‐1S offshore South Korea. It was drilled using the KNOC Doo Sung semi‐submersible mobile offshore drilling unit (MODU). The supply base was located in a non‐oilfield area in Busan, Korea. The Gorae D‐1 was drilled to penetrate the target Upper and Lower formation sands in a normal pressure and temperature environment.

Nautec were Project Managers and in accordance with the generated Project Execution Plan, the team was responsible for:

  • Basis for Design, Drilling and Well Testing
  • Detailed Well Design, Drilling Program, Well Testing Program and Work Procedures
  • Well Cost Estimates, AFE and Cost Monitoring
  • Technical and Commercial Specifications for Tender Documents
  • Evaluation and Award Recommendation of Tender Submissions
  • Contract Creation and Execution
  • Emergency Response Plans and HSE Bridging Documents
  • Logistics Planning and Execution
  • Risk Identification and Mitigations
  • Day to Day Management and Supervision of Drilling Operations
  • Project Close Out and Reporting

The Gorae D‐1 well was suspended successfully following well suspension and abandonment guidelines on 26th January 2015, 57 days from spud.

Highlights of the well include:

  • No Lost Time Accidents
  • No Environmental Incidents
  • 27m Core Obtained – 100% Recovery
  • No Lost Returns and No Fluid Lost to Objective Sands
  • Successfully logged and sampled 8 ½” hole over 4 days with 4 successful runs:
  • Cased hole multi rate testing operations conducted trouble free
  • Gorae D‐1 suspended pending future production facility hook‐up