Data inventory and quality control
Reconcile seismic interpretation, well logs, core, test results and field measurements. Check depth references, stratigraphic correlations and inconsistencies between data sources.
NGB / SUPERVISING & PRODUCTION ENGINEERING
Well construction oversight.
Production optimisation.
We bring together geological evaluation, reservoir management and wellsite supervision. From programme review and contractor coordination to well-performance analysis and substantiated production optimisation measures.
Agreed hold points, traceable decisions and performance evaluation based on measured data.
Geological audit
We review the geological and geophysical basis of a project: data consistency, reservoir interpretation and the assumptions behind the evaluation. Findings support a defined decision on drilling, well testing or updating the field model.
Geological and petrophysical review
Review structure, net reservoir thickness, porosity, permeability, saturation and fluid contacts. Assess how these inputs affect hydrocarbon volume estimates.
Uncertainty and appraisal priorities
Identify critical data gaps and the sensitivity of conclusions to assumptions. Prioritize additional data acquisition and appraisal work required before the next project stage.
Deliverables and decisions
A technical review of data quality and the geological concept, an uncertainty register and a recommended appraisal program. A formal reserves assessment is defined under a separate scope.
Reservoir management
Integrate the geological model, production history and test results to support the development strategy. Compare well-stock options against reservoir pressure behavior, well interference and surface-facility constraints.
Production history and reservoir behavior
Analyze rates, cumulative production, reservoir and bottomhole pressures, water cut and fluid composition. Identify depletion trends, productivity changes and areas requiring further investigation.
Modeling and development scenarios
Where data support it, update the dynamic model and history match. Compare offtake strategies, infill drilling, well reactivation and reservoir-intervention scenarios.
Surveillance and well-stock planning
Prioritize wells for testing and intervention, define surveillance indicators and forecast-review intervals. Link the monitoring program to field-development decisions.
Deliverables and decisions
Scenario comparisons, production forecasts with uncertainty ranges, a prioritized well-stock work plan and a reservoir-surveillance program.
Well construction supervision
Represent the client’s technical interests at the wellsite by monitoring execution against the approved program, the quality of critical operations and readiness for stage transitions. Coordinate the drilling contractor and service companies, and document deviations and technical decisions.
IWCFSpecialists certified on multiple occasions
Dnieper–DonetsExperience in the Dnieper–Donets Depression
Beyond 5,000 mDeep-well construction experience
High formation pressureAbnormally high formation pressures
Program and operational readiness
Review the operation sequence, subsurface and operational risks, and rig and service readiness. Agree hold points, acceptance criteria and contractor interfaces before each stage.
Drilling execution and performance
Monitor depth, footage, rate of penetration, drilling parameters and drilling-fluid properties. Review program deviations, wellbore conditions and tripping performance with the relevant service specialists.
Well barriers and well control
Monitor barrier status, completion of the BOP test program and test records. Verify responsibilities and team readiness to respond to deviations under the approved procedures.
Casing running and installation
Check casing inventory, documentation and tally against the casing program. Monitor running, connections, setting depth and pressure-test results; record nonconformities before stage acceptance.
Cementing and zonal isolation
Compare the approved program with actual volumes, slurry properties and pumping parameters. Review the cementing report and available isolation-evaluation data, recording results and deviations.
Testing, completion and handover
Oversee execution of the testing program, installation of completion equipment and acceptance checks. Reconcile the as-built well configuration, barrier status and documentation before handover to the client.
Coordination and change control
Operational meetings, coordination of simultaneous activities and shift handovers. Program changes undergo risk review and client approval, with decisions and accountable parties recorded.
Daily reporting and time analysis
Daily reports covering the operation timeline, technical parameters and next-day plan. Track productive and non-productive time (NPT), deviation causes, completed work and corrective actions.
Deliverables and decisions
Daily reports, checklists and test records, a deviation and approved-change register, stage-acceptance records and an end-of-well report.
Production engineering
Evaluate the producing well as part of the reservoir–well–surface network system. Locate production constraints, compare optimization options and define the measurements needed to verify intervention results.
Well-performance diagnostics
Analyze rates, pressures, water cut and operating history. Interpret well tests, pressure build-up and production logs to distinguish reservoir limitations from wellbore constraints.
Nodal analysis and operating conditions
Calibrate the model against measurements and compare inflow performance (IPR) with vertical lift performance (VLP). Evaluate the influence of tubing, wellhead equipment and network backpressure on operating conditions.
Optimization and intervention planning
Compare compression, deliquification, artificial lift, selective water shut-off and stimulation options. Assess technical feasibility, constraints, costs and post-intervention measurement requirements.
Engineering analysis scope
Reservoir
Pressure, flow properties, inflow and depletion behavior.
Well
Completion configuration, pressure losses, liquid loading and lift-system capability.
Surface network
Backpressure, gathering conditions, compression and processing constraints.
Deliverables and decisions
A measurement-calibrated model, constraint register, recommended operating range and comparison of technical and economic options. Startup and shutdown transients are assessed separately from steady-state operation.
Engineering engagement
Technical inputs
Well program and configuration, geological and operational data, work and production history, and test results.
Scope and responsibilities
An agreed work scope, authority limits, hold points and decision process between the client, supervisor and contractors.
Reporting and acceptance
Reporting format and frequency, stage-acceptance criteria, as-built documentation and performance-review arrangements.
Let’s discuss your well or field.
Share the project stage and the technical challenge. We will define the data required and the scope of engineering support.
office@ngb.ua