Use of Fiber Optics for Injection and Production Monitoring in Multi-Stage, Horizontal Laterals

Transcription

1 Use of Fiber Optics for Injection and Production Monitoring in Multi-Stage, Horizontal Laterals Garry Garfield, Weatherford Burt Todd, Montana Tech Leo Heath, Montana Tech

2 Outline 1 Project Background Proposal Completion Method Completion Equipment Data Collection Challenges Wrap Up

3 Project Background 2 A Study of EOR Feasibility in the Elm Coulee Bakken Field Montana Tech proposal Project funded by Montana Board of Oil and Gas Conservation Final proposal planned for Fall 2017

4 3 Project Background SPE # Study Area An Evaluation of EOR Potential in the Elm Coulee Bakken Formation, Richland County, Montana Burt Todd; David Reichhardt; Leo Heath Reservoir study of historical data Pre-existing high-permeability features must be controlled for gas injection to be successful. Downhole monitoring of injection conformance and effective diversion techniques in the horizontal section of injection wells are critical to effectively managing EOR floods.

5 Proposal 4 Objectives Measure gas flow rates into each zone individually Adjust injection rates at later dates Measure gas volumes injected into each zone Monitor injection performance

6 Proposal 5 Pilot well profile 5-1/2 20#/ft Casing 2-3/8 4.70#/ft Tubing Injection of dry gas 250 Deg F Rural electric AC 10 zones on 1000 spacing along a 10,000 horizontal lateral

7 6 Project Start Up Collaboration Participants Conference calls/ s Industry Reps Reservoir Monitoring Completion Systems

8 7 Completion Method Running Procedure Run casing to surface Include cable, frac sleeves Most time intensive Frac sleeves vs PNP Open Sleeves, frac

9 8 Completion Equipment Data Transmission Fiber Optic Cable 3 4 fiber construction available for multiple measurements Single mode and multimode Construction proven hydrogen and fluid resistance

10 9 Completion Method Running Procedure Remove ball seats Run tubing, packers, sliding sleeves Intervention CT to open/close sliding sleeves

11 Completion Equipment 10 Case History Farmington area 20 wells in the past 2 years

12 11 Completion Equipment Surface equipment Multiple configurations for different environments Control room Portable units Remote locations Desert Unmanned platforms Multi-well capability Data backup Remote access capability Life of well data quality and assurance

13 Data Collection 12 Cable/DTS Provides a temperature measurement every meter along the wellbore. Track well production changes over time In-flow distribution along the reservoir Detect/locating water breakthrough, steam injection (SAGD), or gas breakthrough Verify cross flow Where the injected gas is going

14 13 Data Collection Cable/DAS A single DAS measurement can convey different information in different frequencies: Low Frequencies: Liquid transport, Fluid interfaces, Thermal disturbances Medium Frequencies: Flow through ICVs, Flow past obstacles High Frequencies: Flow through GLVs

15 Challenges 14 Making it Fit Intervention in long, extended laterals Ball drop vs shifting tool frac sleeves System retrievability Availability of equipment Development of new tools Cost per well Client buy-in

16 Conclusions 15 Sum up Collaborative effort Data collection/study Name recognition Montana Tech proposal set for Fall Client buy-in

17 Thank you 16 Questions?