Flowpro as is currently developing potentially ground breaking technology for more efficient and better quality multi stage fracturing of horizontal wells. We are also developing autonomous inflow control devices, which will allow selective production of oil water and gas phases entering the wellbore. This technology also has potential applications in separation and flow assurance as well as process control.
NEXT GENERATION MULTI STAGE FRACTURING TECHNOLOGY
The demand for natural oil and gas has grown significantly over the years making low productivity oil and gas reservoirs economically feasible. In low productivity reservoirs throughout the world, hydraulic fracturing plays an important part in improving well production through large contact areas between wells and reservoirs. Long horizontal wells with increasing number of fractures are now commonly used to enhance extraction of oil and gas. It is usual for these wells that completion cost makes up more than 50% of total well cost. Thus, there is a large potential if savings in completion cost can be achieved without compromising completion efficiency. Flowpro as is developing a new fracturing method and tools to resolve many of the known limitations and inefficiencies of current fracturing methods, such as:
- Uneven fracture size.
- Limited wellbore access.
- Poor and uneven fracture clean up.
- Limited number of fractures.
- Restricted wellbore access.
- Reduced fracturing capacity.
- Proppant flow back.
- Environmental hazard of excessive fractures.
- Risk of screen out.
AUTONOMOUS INFLOW CONTROL TECHNOLOGY
The first generation static inflow control technology (ICD) was developed in the early 1990s by Norsk Hydro to mitigate early gas breakthrough caused by uneven drainage to long horizontal wells on the North Sea Troll field. Flowpro Personnel was instrumental in the original invention, which has quadrupled the feasible horizontal wellbore lengths and generated great added value for operators. ICD completions have later been used for a variety of applications to accelerate and improve recovery from horizontal wells in both sandstone and carbonate reservoirs.
The first generation ICD was a static device that does not change choke performance according to fluid phase. However, ideally we would like to suppress zones with gas and water production, and promote zones with oil production along the well bore. Flowpro is currently developing a simple valve concept that selectively chokes zones with excessive gas production. The valve can also be used to choke watered out zones in heavy oil applications. The system combines the proactive control qualities of the static inflow control with the reactive abilities of intelligent completions, while maintaining the simplistic quality and low cost of the ICD concept.