Drilling, Wells & Subsurface Engineering

Subsurface Modelling and Interpretation

• SLB Petrel

  Subsurface modeling, geological interpretation and field development evaluation used in technical due diligence.

• SLB Techlog

  Petrophysical and well log interpretation and formation evaluation.

Drilling Engineering

• Halliburton Landmark WELLPLAN

  Well planning, torque and drag, hydraulics, casing design and BHA behavior analysis.

• Drillbench

  Dynamic well control, kick, surge and swab simulation used in well event investigation.

Well Performance and Records

• PIPESIM

  Production system and multiphase well performance modeling.

• Kappa Saphir and Ecrin

  Pressure transient and well test interpretation supporting reserve and performance assessment.

• OpenWells and EDM daily drilling records

  Operational record evidence used to reconstruct the sequence of a well event.

Artificial Lift and Production Performance

• Progressing cavity pump performance modelling

  Rod string torque, speed, slip and elastomer stator condition assessed against measured drive load and production rate on PCP wells.

• Drive and dynamometer data interpretation

  Surface drive electrical and torque records read as a production record to separate pump condition from system constraint.

• OLGA transient multiphase simulation

  Slugging, rate change and shut in restart behavior in wellhead and flowline systems where steady state modelling is not sufficient.

• ANSYS Fluent CFD for local flow behavior

  Velocity field, recirculation and pressure distribution inside wellhead geometry and tie in piping where flow induced excitation is suspected.

Wellhead Vibration and Structural Response

• Wellhead vibration and dynamic strain instrumentation

  Temporary or permanent measurement points that record system response while production rate is varied within an approved envelope.

• ANSYS Mechanical and piping stress analysis

  Stress, modal and support behavior of the as installed wellhead, tie in and flowline rather than the drawing configuration.

• Laser scanning and CAD reconstruction of as installed geometry

  Dimensional capture of the surface arrangement so stiffness and load paths in the model match the equipment in the field.

• Ultrasound, acoustic and thermographic measurement

  Independent evidence of wall loss, leakage, contact and thermal condition correlated with the vibration record.

Produced Fluids, Solids and Erosion

• Sand and solids monitoring and erosion probes

  Solids loading tracked against production rate and measured wall loss at bends, chokes and tie in points.

• Produced fluid characterization protocol

  Chemical, water cut, gas fraction, emulsion and solids analysis sampled on the same time base as the mechanical measurements.

Well Integrity Inspection

• Downhole camera, caliper and cement evaluation logs

  Physical condition evidence of casing, cement and completion integrity.

• ROV and subsea visual inspection

  Wellhead, riser and subsea equipment condition where access is only remote.

Root Cause and Analytical Method

• Apollo Root Cause Analysis and fault tree analysis

  Cause determination for well control events, stuck pipe, integrity loss and non productive time claims.

• Barrier analysis

  Test of whether well barriers were in place, verified and effective at the time of the event.

BlackOut Power / TerraTolga Proprietary Capability

• Engineering Records Intelligence ↗

  Well files, daily reports, programmes and vendor records assembled into one reviewable sequence.

• TerraTolga PDF / Vault Compare ↗

  Comparison of drilling programme and procedure revisions against what was executed.

• Criticality ↗

  Ranking of wells and well equipment by consequence of failure for integrity and capital planning.