Two runs combined into one trip
Cement clean-out, casing pickling and displacement to completion fluid in a single trip, aiming to save 24 hours of rig time.
- Job design
- 9⅝″ WBCO
- Deviation
- 55°
- Well MD
- 10,560 ft
- Drilling fluid
- 10.8 ppg OBM
- Completion fluid
- 8.7 ppg NaCl brine
Objective
Clean out cement for the positive/negative test, pickle the casing and displace to completion fluid, saving 24 hours of rig time.
Procedure
- ConventionalRun the WBCO string separately for casing pickling and displacement.
- Marshall approachCombine two runs into one trip, leaving the well ready for completion.
Services provided
- Mechanical wellbore clean-out tools: scraper, brush, magnet, junk basket
- Technical proposal
- Displacement chemicals
- Tool placement design
- Wellsite engineering supervision
Results
Fluid interface, volumes circulated to the required fluid clarity, total circulating time and differential pressure were all within the well programme values.
