Prod. Optimization
Production optimization includes stimulation, ESP and gas lift optimization, additional perforation, water shut-off etc.
Implications:
Increase Production
- Lower mean failure rate
- Increase Flow Rate
- Maximize Reservoir Production Lower Cost
- Reduce down time
- Maximize human resources potential
- Doing more with less
Field Management
Managing significant volumes of water production and disposal is critical to achieving oil production targets. The strategy exists to minimise water production to surface where possible without impacting well oil recovery.
Implications:
Off-take / Injection Strategy
- Commingled reservoir production
- Maximise field off-take
- Gross handling capacity constraint Sweep Management
- horizontal infill development wells
- maximizing ultimate recovery (UR)
- Well profile control Water Management
- Maximising stand-off of producing zones
- Isolation of conductive features
- Subsequent water shut-off (WSO)
Well Performance Review
The full asset well stock is to be reviewed on a regular basis. These reviews may take the forms: routine normal well reviews, Post Production Reviews (PPR) in the first year of the wells production, and Closed in Well reviews. For Normal and PPR reviews the objectives are to build and document an integrated understanding of the wells performance based on production and intervention history, and from this identify activities or opportunities to either assure current forecast recovery or achieve additional production.
Inflow/Outflow Modelling
Well inflow/outflow modelling can be a useful tool for field WRM. These models can be used for troubleshooting current well performance by comparing with actual well production rates and pressure data. PROSPER is the current commonly supported Inflow/Outflow modelling package. The inflow/outflow for ESP wells can be distinctly modelled, .Reservoir Models . Both static and dynamic reservoir models can be utilised to assist WRM in producing fields.
- Petrel Static Geological Reservoir Models
- Full field dynamic MoRes models
- Streamline simulation models
Well & Reservoir Management (WRM)
- The practice of well and reservoir management is not a project with a start and an end date. It is an iterative process where on a continuous basis the effectiveness of activities is improved by comparing the actual performance with predictions made
- WRM has the objective to safeguard the recovery of the developed reserves, whilst optimising the short term production level within the provided budget
- WRM targets are defined which specify the optimum operating range for reservoirs and wells
Well & Reservoir Management (WRM)
- Well Integrity
- Reservoir & Well Surveillance
- Production Restoration
- Production Restoration
- Water Management
- Production Optimization
- Deferment Management
Well Completion/Design Review
Completions & Operations
The process of well completion consists of the operations necessary to cause the well to produce, following the installation and cementing of the casing.
Well completion operations:
- Perforating
- Sand Control
- Production Packer Setting
- Tubing String Installation
- Christmas Tree Installation Reservoir Completions/Workovers
- Sand control
- Reservoir drive mechanism
- Multiple reservoirs
- Producing rate
- Stimulation/Removal of skin damage
- timulation/Removal of skin damage •Workover aspects
Water Injection
The wells injecting under matrix condition pressure and rate constraints apply. (OE) includes the target injection rate and the maximum permissible flow-line pressure.
- Water Management
- Sweep Management
- Water injection rates, wellhead injection pressure-Production /Injection profiles (well inflow/reservoir behaviour /sweep)
