|Multiple-fractured production wells (permanent monitoring):||Evaluation of inflow profile (to detect
producing intervals) after multistage hydraulic fracturing;
Optimization of multiple hydraulic fractures design for efficient well development;
Identification of producing intervals during 2-3 months after multi-stage hydraulic fracturing (MHF), identification of weak intervals .
|Producing wells with ESP:||
Evaluation of inflow profile (different severance tax imposed on the reservoirs);
Control of well technical condition and downhole equipment;
Enabling Electrical Submersible Pump (ESP) testing in horizontal wells;
Feature of permanent monitoring:
Evaluation of inflow profile (identification of producing intervals) arter multi-stage hydraulic fracturing (MHF) during 2-3 months.
Evaluation of inflow profile in multi-zone reservoirs without production logging tests (PLT). For vertical wells the difference in geothermal gradient shall not be less than 1.0-1.5ºC);
Detection of water and gas breakthrough intervals, cross-flows and downhole equipment leaks;
Longer life of ESP as a result of controlling both electrical cable and pump integrity;
Control of of pressure change dynamics to evaluate reservoir parameters.
Evaluation of inflow profile, waterflooding and technical condition with fiber-optic systems using different methods of optical signal detection:
- Raman scattering;
- Brillouin scattering;
- Rayleigh scattering.
seismic measurements in wells with acoustic monitoring;
Hydralic fracturing process monitoring using temperature, pressure and acoustic sensing;
Permanent measurement of inflow profile using temperature, pressure and acoustic sensing.
Timely decision making and problem-solving;
Efficient planning of well interventions (field geophysical tests, major workover);
Reduced production cost;
Increased recovery index.
Fiber-optic monitoring offers a vast variety of applications from controlling technical condition of oil & gas gathering systems through to permanent monitoring of::
Injection and horizontal wells;
Multiple-fractured vertical and horizontal wells;
|Up to 20 fiber-optic cables can be
monitored with single analyzer;
Up to 80 km sensing range with single temperature analyzer;
Up to 40 km sensing range with single acoustic analyzer.
"Use of fiber-optic technologies allow the well owners to control asset condition from the bottom-hole through the trunk pipeline”
|Oil gathering system||Well pad|