Pressure Coring, A New Tool for Unconventional Oil & Gas Characterization. Matt Bjorum Global Product Line Manager

Transcription

1 Pressure Coring, A New Tool for Unconventional Oil & Gas Characterization Matt Bjorum Global Product Line Manager

2 Outline Technology Overview Coring Configurations Tool Overview Surface Handling and Data Acquisition Obtainable Deliverables Sampling Strategy Example

3 Gas & Fluid Analysis Sources Pressure Core Wireline Core Quality of Data Conventional Core Sidewall Cores Uncertainty Drill Cuttings

4 QuickCapture Overview Captures all expelled gas and fluids from the core 3 (76mm) Diameter Core in 7 7/8 (200mm) hole size Wireline 3 (76mm) Diameter Core in 6 1/8 (155mm) hole size Conventional 4 (102mm) Diameter Core in 8 1/2 (216mm) hole Size Conventional Standard 10 (3m) in length runs Length can be increased or decreased depending on formation Pressure & Temperature Transducers Crack Valves Set to Control Pressure Communications SAFER work environment (Pressure Relief Valves) Proprietary sealing system (under patent)

5 Coring Configurations Wireline Platform Alternate Between QuickCore and QuickCapture No Tripping Required Drill Ahead Capabilities Suited for Longer Core Intervals Conventional Platform Ability to Use Rigs Drill String Limited Kit to Mobilize Suited for Shorter Coring Intervals or Long Drill Breaks Conventional/Wireline Core Runs Pressure Core Runs

6 QuickCapture Assembly Spearhead / Inner Barrel Head Pressure Canister Pressure/Temperature Recording Module Pressure/Temperature Recording Module Inner Barrel Canister Core Catcher Bit / Shank Latch Valve and Activator

7 Standard Tool Set Up Pressure Relief Valve Setting Crack Valve Settings 500 psi 50 psi 50 psi 250 psi Crack Valve Settings Can be Adjusted Number of Canisters Pressure Relief Settings Operating (500psi) Barrel & Canister Pressure Relief (1000psi) Burst Pressure (5000psi) Canisters can be Added on Surface for Safety

8 Wireline Trip Out Example Blue Barrel Pressure Pink Canister 1 Pressure Red Barrel Temperature Pressure Inside and Outside Barrel are Equal Stopped to Relieve Torque in Wireline Pressure Steps Occur as Barrel Vents Into Canister Stopped to Relieve Torque in Wireline Core Begins to Build and Maintain Pressure Temperature is Recorded

9 Core Barrel & Canister Recovery Tool Download Pressure and Temperature Data Core Barrel Gas Recovery (if present) Data Acquisition: Pressure and Temperature Data Total Gas Volumes Measured Gas Composition & Isotope Samples Collected Fluid Collection On site Laboratory

10 Surface Handling Blue Barrel Pressure Pink Canister 1 Pressure Red Barrel Temperature Tool at Surface Tool in On Site Lab Barrel Communicating with Canisters Canisters Removed / Barrel Transferred to On Site Lab Barrel Continues to Build Pressure in Lab Gas from Barrel is Transferred to First Evacuated Cylinder Barrel is Monitored as Pressure Stabilizes Gas from Barrel is Transferred to Second Evacuated Cylinder Gas and Liquids are Transferred from Canister to Evacuated Cylinder Barrel Temp is Monitored in On Site Lab Tool Removed From Hole

11 Core Extrusion Core Transferred Transferred To Laboratory Slotted or Perforated Liner Core Transport Barrels

12 Obtainable Deliverables The technique represents enabling technology for Liquid and Gas Saturation applications through the accurate measurement(s) of: OOIP Original Oil in Place OGIP Original Gas In Place GOR Gas : Oil Ratio Gas Content Analysis Oil and Gas Composition Gas and Oil Isotope Geochemistry Reservoir Fluid Analysis Saturation Measurements Pore Pressure PVT Analysis Etc

13 Traditional Gas Content & Composition Analysis Method to provide a measurement of all free, adsorbed, and absorbed gas 90 Gas Composition Analysis Rates of gas evolution from the core matrix provide an indication of relative diffusivity Lost Gas is Calculated Evolved gas is collected to be assessed for composition and fractionation with time Gas Content, scf/ton Lost Gas; Calculated Measured Gas Measured Gas Desorption Terminated; Sample is Pulverized and Residual Gas is Measured Elapsed Time, hours

14 Recent Gas Content Analysis Project Traditional Method Canister Gas Content Lost Canister = Gas + Gas + Volume Volume Residual Gas Volume Calculated Measured Measured Pressure Coring Canister Gas Content Lost Canister = Gas + Gas + Volume Volume Measured Residual Gas Volume Measured All Expelled Gases and Fluids can be Analysed

15 Sampling Strategy Approach Dry Gas UPPER ZONE Feet Wireline Core P 7 C P 14 C GC P 22 C 23 P 24 C GC 25 P 26 C 27 P 28 C GC 29 P 30 C LOWER ZONE Feet Wireline Core P 7 C P 11 C P 14 C GC P 21 C P 22 C 23 P 24 C GC 25 P 26 C 27 P 28 C GC 29 P P 30 C C Whole Core Analysis Sampling Program Gas Content Samples Collected (C) Preservation Samples Collected (P) Canisters Dedicated for Gas Composition / Isotope Analysis (GC) QuickCapture Sampling QuickCapture Analysis Sampling Program Gas Composition /Isotope Samples Collected (QC Barrel) Gas Composition /Isotope Samples Collected (10 Canister) Gas Composition /Isotope Samples Collected (Crushed Gas) Feet Quick Capture GC GC 9

16 Traditional Canister Gas Totals

17 QuickCapture Results (Actual Gas Content)

18 Wellsite Gas Content Numbers Laboratory 10% Residual 4% Wellsite 86%

19 Summary & Questions Matt Bjorum Global Product Line Manager group.com group.com

20 Canister Gas vs. QuickCapture for Total Gas Content 100% 90% Residual 5% 5% 80% 70% 45% Measured 60% 50% 40% 95% Measured Residual Gas Measure Gas Lost Gas 30% 50% Lost 20% 10% No Lost Gas 0% Canister Desorption Experiment QuickCapture Barrel