Acquisition, Processing & Interpretation of 2D & 3D Seismic data, Drilling Rigs capable of 3000m well depths, Drill Fluid, Cementing, Directional Drilling with MWD/LWD, Wire line Logging & Perforation, DST both Open hole & Cased hole, Mud Logging, Casing & Tubing running, Fishing, Well control, Drilling equipment rental, Production Testing, Civil Engineering & Drill site preparation, Coring, Well stimulation services, Well construction, etc.

Materials/Supplies:

Drilling Bits, Tubular Casing, Tubing & Line pipes, Completion Tools, Well Head & X-Mas Trees, Cement & Cementing down-hole accessories-equipment. Packer, Bridge Plug, etc.

Other Services:

Customs Clearance, Freight & Forwarding, Trucking, Vehicle Hiring services, Drilling Manpower sourcing, Security Guard services, etc.

•       Reservoir Potential Evaluation

–      The volume of oil the reservoir can continuously sustain under optimum conditions, i.e. no limitations wrt number of drainage points -  no reservoir, facilities , or operational constraints

•       Inflow potential estimation

–      the reservoir potential adjusted for reservoir constraints , pressure decline, water/gas production, inflow performance (impairment or sand exclusion) . May be constrained by a further 3 factors

•       the lifting % of the conduit i.e. vertical lift performance, conduit size, conduit deposits (wax, scale)

•       downstream facility constraints I.e. process limitations, export system constraints

•       combination of both above e.g. system backpressure created by process affecting conduit flow performance

•       Conduit Potential estimation

–      each of the wells in the integrated production system has a finite maximum throughput, (conduit potential) hence the max production rate from the reservoir within the field is the sum of the individual conduit potentials

•       Production Planning

–      is the max production rate under ‘normal’ operating conditions which could be produced if all wells and facilities were fully operational.  The difference between the sum of the unrestricted conduit potentials and the actual production determines the ‘mismatch’

•       Maximum Production Target

–      Although the production is a theoretically achievable target there are a number of factors which must be included to safeguard integrity - Maintenance activities determining the the max production target

•       Production Availability

–      Operating at max production target further limited by scheduled and unscheduled deferments due to operations, maintenance and engineering modification processes which will determine the production availability

•       Production Target

–      Will be determined by customer demands and own use (and losses), the injection target will be determined by reservoir management i.e. voidage control.  The production target is in itself vulnerable.  In the event of unplanned offtake restrictions related to downstream activities (tanker delays) offtake levels may not reach target levels, a deferment which should be taken into account and recorded for future references

•       Drilling           Recompletions  Stimulations      Additional perforations   Re-perforations         Sand exclusion           Zone Changes

•       Bean ups                               Artifical lift optimisation               Removal of conduit restrictions Zone changes    Commingling/de-commingling Debottleknecking i.e.known &   scheduled surface constraints Sub-optimal well performance

•       Engineering modifications             Safeguarding - routines          Scheduled & unscheduled maintenance Unscheduled facility shutdowns    Unscheduled downstream constraints e.g. tanker loading, community disturbances

Deferrment of production due to Maintenance -

•       represents around 30% of total EP OPEX 

•       on Group basis hydrocarbon deferment due to Maintenance activities represents 50% + of the difference between conduit potential and actual production every day

•       Maintenance activities secure by their application continued technical integrity of aging assets            

•       Maximise revenue by;

•       High levels of routine maintenance compliance

•       Apply analytical techniques to optimise maintenance

•       Increase non intrusive maintenance and inspection

•       Create incentive structures for maintainers

•       ensure high availability which should attract Low OPEX