An Engineering Approach to Utilize Fiber Optics Telemetry Enabled Coiled Tubing (ACTive Technology) in Well Testing and Sand Stone Matrix Stimulation - First Time in the World (SPE 154513)

This paper explains the first ever application of using Fiber Optics Telemetry Enabled Coiled Tubing (ACTive Technology) in well testing and the capability of calculating the skin value, live, during Matrix Stimulation. It also explains the efficiency in determining the faults in the reservoir and the time saving in making Build Up test for low pressure reservoirs which are not naturally flowing. For the last years viscous pills and some polymers were used to kill the wells during the workover operation in the tronian formation existing in the eastern desert of Egypt. The polymer being pumped has negatively affected the wells productivity by blocking the pore throats and reducing the permeability. As an example, the well (A) was producing 500 bopd which declined dramatically after a work over operation to produce only 40 bopd. An Engineering Study was done to identify the main reason for the decline in the production. Several experiments were done in the lab in order to simulate the filter cake using formation sample and simulate the effect of the polymer being injected on the permeability. An engineered solution was designed to break the polymer being pumped in the formation and stimulate the Matrix in order to recover and enhance the oil production. Operation was done utilizing Fiber Optics Telemetry Enabled Coiled Tubing (ACTive Technology) in order to achieve the following: 1) Measure and record bottom hole pressure. 2) Measure and record bottom hole temp. 3) CCL depth correlation to achieve max accuracy while placing the fluid. 4) Monitor the change in temp during treatment execution. 5) Monitor how the diversion effect and the reactions in the sand stone formation during stimulations and the timing required for efficient reactions. All the data gathered were very representative and became a reference for the field.