The Vee-Pump: The Petroleum Engineer s Pump

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Sharlene Madlyn Newman
6 years ago
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1 ALRDC Seminar New and Novel Artificial Lift Technologies ConocoPhillips, Houston, Texas The Vee-Pump: The Petroleum Engineer s Pump Alastair Simpson, Petroleum Engineer, Inventor Vesper Pumps, Inc (Subsidiary of HiVis Pumps AS)

2 ALRDC Seminar New and Novel Artificial Lift Technologies ConocoPhillips, Houston, Texas HiVis Vee-Pump JIP Sponsors

3 What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint 3

4 What does it look like Similar to an ESP Motors Protector / Seal ESP Cable & MLE Pump Intake Pump Discharge Head Pump Shaft & Housing Impellers & Diffusers New Rotors, Stators, Stage Bearings 4

5 Head - Capacity 5

6 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 6

7 High Viscosity Testing (Flow Loop only) Key findings: Pump works well up to and potentially above 13,500cP Motor cooling tested to 6,000+cP (needs special attachments, specification requirements) Motor operation up to 10,000cP should be viable but requires further testing before going into the field. Motor cooling shroud needs very careful specification! New pump intake for elevated viscosity applications 7

8 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 8

$moderately shallow sandy wells 2 field trials in deep unconventional wells (high gas, frac$

9 Field Trials & Results to Date Power Consumption Operating Range 2 field trials in moderately shallow sandy wells 2 field trials in deep unconventional wells (high gas, frac sand) 9

10 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing & field trials, conventional & unconventionals) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 10

11 Sand Testing: Flow Loop & Field Trials Claremore: Centrilift Accelerated Erosion Loop: fine, sharp foundry sand: 2 2% 4%; Result? No measureable erosion or damage. Sheridan: GOS Pump Test Loop: play sand, comprising 4% unsorted fine sand + 2mm gravel; 100cP 3,000cP Result? No erosion, no damage. Hominy: Global/HAL (new) Pump Test Loop: play sand, comprising 4% unsorted fine sand + 2mm gravel; 100cP 2,500cP; 1,000cP 13,500cP Result? No erosion, no damage. 2 x K Field wells Moderate / high sand? (16months & 6 months) still running Unconventional well: 68 days operation, high frac sand: no damage

12 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 12

13 Operating Range? K Field; V4A x 20st. 6 Months; viscous oil + sand A Well; V4A x 50 stage; 2½ Months; oil + water + GOR 10,000+ sand Gas + Liquid rate at intake K Field; V4A x 20 st. 16 Months; water + sand Liquid rate Confidential

14 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 14

15 GOR SCF/bbl Unconventional Well; 10,000ft TVD 'A' Well (Test duration: 2 1/2 Months) SCADA Data recording failed? Pump removed 21/01/ /01/ /02/ /02/ /03/ /03/ /03/ /04/ /04/ Rate B/D GOR B/D 15

16 GOR SCF/bbl Typical 24hour Data 'A' Well (Typical 24 hour data) GOR B/D Rate B/D Hours

17 GOR SCF/bbl 'A' Well (Typical 2 hour data) 1,000, , ,000 1, Rate B/D Minutes 0 GOR B/D 17

18 Observations: Flowline icy cold during gas slugs (~35 F) Pump appears to act as a downhole compressor ( P psi during gas slugs); Motor load just above idle Amps! Motor Winding Temperature. Repeated problems blocking well with paraffin (wax) and scale (carbonate?) Tubing string (9,600ft) probably masks what is really happening at the pump. 18

19 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 19

20 Motor Load Characteristics 20

21 Flow Loop Testing vs Field Trials What is the Vee-Pump? An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint Loop Tests? Field Trials 21

22 NPSH / Cavitation During the Centrilift Accelerated Erosion testing, due to flow loop limitations: V-9 single stage pump was working with intake pressure ~ -4psig (+10.7psia). (Chevron in attendance) V-9 pump also worked for some time at -8psig (+6.7psia) During HAL water testing V-4 multistage pump working satisfactorily at 6,000b/d, intake pressure -11psig (+3.7psia) Pump exhibits no vibration or damage when run with starved suction (bearings only designed to run dry for limited period)

23 What did we do to the Affinity Laws? 1??????? Now a variable! Now a variable!

24 What Support is Needed from Industry? Further funded field trials and access to data New component designs are being reviewed to optimize the Vee-Pump and ensure long term reliability Heavy / viscous oil field trial! Funding and program for formal 3 rd party testing (e.g. high gas fraction) Investor(s) and funding to help continue: a. Technology development b. Progress towards commercialization 24

25 The Petroleum Engineer s Pump An effective pump for high viscosity fluids Several Rotor x Stator combinations, (similar to ESPs) Fully tested 1 13,500cP Up to 20,000cP, potentially higher viscosity? Very effective pump for low viscosity fluids. Extremely solids tolerant (accelerated erosion testing and field trials) Wide operating range (Well P.I. error tolerant!) Multiphase pump Improved motor load characteristics (compared to centrifugal) Minimal NPSH constraint 25

26 Copyright Rights to this presentation are owned by HiVis Pumps AS listed on the title page. By submitting this presentation to the ALRDC Seminar for New or Novel Artificial Lift Technologies, they grant to the Artificial Lift Research and Development Council (ALRDC) rights to: Display the presentation at the Seminar. Place it on the web site. Other use of this presentation is prohibited without the expressed written permission of the author(s). The owner company(ies) and/or author(s) may publish this material in other journals or magazines if they refer to the ALRDC Seminar where it was first presented. 26

27 Disclaimer The Artificial Lift Research and Development Council and its officers and trustees, and the ALRDC Seminar Steering Committee members, and their supporting organizations and companies (herein-after referred to as the Sponsoring Organizations), and the author(s) of this Technical Presentation and their company(ies), provide this presentation at the ALRDC Seminar "as is" without any warranty of any kind, express or implied, as to the accuracy of the information or the products or services referred to by any presenter (in so far as such warranties may be excluded under any relevant law) and these members and their companies will not be liable for unlawful actions and any losses or damage that may result from use of any presentation as a consequence of any inaccuracies in, or any omission from, the information which therein may be contained. The views, opinions, and conclusions expressed in these presentations are those of the author and not necessarily those of the Sponsoring Organizations. The author is solely responsible for the content of the materials. The Sponsoring Organizations cannot and do not warrant the accuracy of these documents beyond the source documents, although we do make every attempt to work from authoritative sources. The Sponsoring Organizations provide these presentations and/or training materials as a service. The Sponsoring Organizations make no representations or warranties, express or implied, with respect to the presentations and/or training materials, or any part thereof, including any warrantees of title, non-infringement of copyright or patent rights of others, merchantability, or fitness or suitability for any purpose. 27

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