Rigless Production Monitoring- Chemical Production Logging Technology

Transcription

1 Rigless Production Monitoring- Chemical Production Logging Technology Dr. Christian A. Andresen Sr. Tracer Surveillance Analyst 1 THE WIRELESS DOWNHOLE PRODUCTION PROFILE Discover more

2 Outline Technology fundamentals How It Works Case Study Flow loop verification Q&A 2 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

3 Riskfree Downhole Surveillance 3 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

4 How it Works Fundamentals Unique tracer molecule Polymer Matrix TRACER SYSTEM Up to 90 (50 oil + 40 water) unique intelligent molecule IDs CARRIER ASSEMBLY Pup-joint or standard completion component Integration to well completion FLUID CONTACT Triggers oil or water tracer release Molecule Release Constant release rate (Flow rate independent) 4 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

5 How it Works Sampling and Interpretation Sample Production Lab Analysis Data Interpretation In house team of analysts Downhole Surveillance Information 5 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

6 How it Works Integrating Tracers in Completion Integration of RESMAN tracer rods into screens RESMAN rods and filaments integrated with carrier Identification for well completion Integration of RESMAN tracer filaments into premium mesh screens 6 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

7 What can tracer technology provide?? Permanent Production Surveillance Inflow distribution Water influx detection Inflow assurance Are all zones contributing? Are mechanical devices working? Are all wells/zones/laterals flowing? 7 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

8 ICD case study Sub-sea development 19 km tie-back to platform Dual lateral ICD completed well 10 oil and 10 water tracer systems installed 5 1/2 Weatherford MaxFlo ICD screen 8 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

9 ICD case study sampling and production data Sample selection done by PVT analysis, compared to OLGA simulation 9 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

10 ICD case study re-start tracer responses A) Steady-state released tracer from last production period B) High concentration fluids from shut-in period C) Steady-state response from stable production All tracers detected and within expected levels: Production at toe of both laterals confirmed, flow past all tracers confirmed B A C 10 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

11 Flush-out theory Shut-in fluids assumed stagnant high concentration volumes form Once the well is started up high tracer concentration cloud will be flushed-out The rate of decline in the tracer concentration is dependent on the production past the tracer carriers Flow estimations are based on history-matching. A steeper curve signifies a higher flow past the tracer systems and thus higher production Q in the section 2Q Q 11 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

12 Tracer systems placed inside the ICD screen 12 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

13 Systems come in contact with oil they release a unique chemical fingerprint (tracer) into the oil 13 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

14 When well is in a static condition, the concentration of tracer builds up around the vicinity of screen 14 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

15 During initial production, flow from reservoir flushes out the oil with the high concentration 15 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

16 Inflow rate from the reservoir determines how fast the ICD is flushed out 16 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

17 Oil with high concentration of tracer enters the main flow path and is carried to surface 17 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

18 Eventually a steady state concentration occurs which is the result of the total flow rate and the tracer release rate 2Q Q 18 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

19 Flow loop testing Project configuration Work awarded to IFE 30+ years R&D activity in multiphase flow (inventor of OLGA) Full scale experiment Up to 2000 m3/day base pipe loopflow and 100 m3/day annular flow Annular pressure chamber 12 x12m Real-time parameter measurements 19 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

20 Flow loop testing experimental lay-out F F Flourometer Flowmeter Annular reservoir F F F F Main reservoir 15 m 3 20 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

21 Flow loop testing experimental lay-out Current configuration 6 5/8 HALLIBURTON ww sandscreen testing Basepipe flow: m3/day variations Annular flow: 3-72 m3/day variations Multiple inflow variations tested for model verifications 21 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

22 Flow loop testing Results changing annular flow rate 25 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

23 Flow loop testing Model fit vs. experimental values RESMAN model estimate Experimental flow rate RESMAN quantitative flow models are well suited for flowback interpretation 26 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

24 Flow loop testing results RESMAN flush-out model shows excellent fit to experimental data Model incorporated into ires 27 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

25 Tracer Flush-out Curve Fittings Flush-out response fitted for cumulative produciton > 1000 m3 k1 = 0.45 k4 = 0.38 k2 = 0.41 k5 = 0.59 k7 = 0.41 k9 = 1.00 k3 = 0.45 k6 = 0.52 k8 = 0.52 k10 = THE WIRELESS DOWNHOLE PRODUCTION PROFILE

26 Tracer Flush-out Production Estimates Production from both monitred and nonmonitored zones included 29 THE WIRELESS DOWNHOLE PRODUCTION PROFILE

27 Thank you for your time and 30 THE WIRELESS DOWNHOLE PRODUCTION PROFILE