Gas Well Deliquification Workshop Sheraton Hotel, Denver, Colorado February 20 22, 2017 Utilizing Gas Assisted Plunger Lift Matt Young Presenter Flowco Production Solutions Dave Dahlgren Flowco Production Solutions Dawn Lima Bonanza Creek Energy, Inc.
Well Pad Selection Challenge: Aged Horizontal DJ Basin Wells Low Formation GLR (2000-6000 scf/bbls) Liquid loading occurring throughout the tubing string. Frequent Paraffin Control Hot Oil with frequencies of 1-4 per month. Recommended ALS Improvements: Introduction of Plunger System to reduce paraffin buildup and eliminate Hot Oil Treatments Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 2
Well Pad Selection- ALS Recommendations Recommended ALS Improvements: Introduction of Plunger System Reduce paraffin build-up through periodic wiping of the tubing walls Eliminated Hot Oil Treatments Removed liquid hold-up pockets throughout the tubing string. Liquid hold-up due to deviation changes and low TGLR Reduced FBHP Average reduction = 120 psi per well Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 3
Installation Type-Open Ended Open Ended Packer-Less Gas Lift Completion Gas Lift Valves Installed without Packer or Standing Valve during initial Flow Back Gas Lift Completion Snubbed In-hole with Ceramic Burst Disc s to control pressure Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 4
Installation Type-Open Ended Allows for Natural Flow after completion. Conversion to other types of artificial lift without work-over. Deepens injection point which allows for lower FBHP Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 5
Introduction of Gas Assisted Plunger Lift Efficiently utilizes the injection gas energy in any well by providing a sealing interface between the lift gas and produced liquids. This change in interface effects the flow pattern thus minimizing fluid fallback. Benefits of plunger assisted gas lift: Helps to maintain production on low FGLR gas lift wells Reduces fluid fallback in both continuous and intermittent gas lift wells Improves efficiency of gas lift system by cutting back on required injection gas volumes Minimizes paraffin, scale, and other deposits build up on the tubing walls Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 6
Plunger Types Two Plunger types were selected during the GLAPL project Bypass Plungers Two-Piece Plungers Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 7
MCFD/BFPD Tubing/Casing/Line PSI Well #1 GLAPL Production Continuous Gas Lift Daily Production 500.0 400.0 Introduction of Plunger System w/ Injection Gas Compression Issues 500 400 300.0 300 200.0 200 100.0 100.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Oil Prod Gas Prod Water Prod Casing Pressure Tubing Pressure Line Pressure
MCFD Casing/FBHP PSI Well #1 GLAPL FBHP Casing Pressure vs. FBHP 500.0 400.0 Introduction of Plunger System w/ Injection Gas 500 400 300.0 300 200.0 200 100.0 100.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 0 Gas Prod Casing Pressure Calculated FBHP Poly. (Calculated FBHP)
MCFD/BFPD Tubing/Casing/Line PSI Well #2 GLAPL Production Continuous Gas Lift Daily Production Compression Issues 500.0 400.0 Introduction of Plunger System w/ Injection Gas 500 400 300.0 300 200.0 200 100.0 100.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Oil Prod Gas Prod Water Prod Casing Pressure Tubing Pressure Line Pressure
MCFD Casing/FBHP PSI Well #2 GLAPL FBHP 500.0 450.0 400.0 Casing Pressure vs. FBHP Introduction of Plunger System w/ Injection Gas 500 450 400 350.0 350 300.0 300 250.0 250 200.0 200 150.0 150 100.0 100 50.0 50.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 0 Gas Prod Casing Pressure Calculated FBHP Poly. (Calculated FBHP)
MCFD/BFPD Tubing/Casing/Line PSI Well #3 GLAPL Production Continuous Gas Lift Daily Production 300.0 250.0 Introduction of Plunger System w/ Injection Gas Compression Issues 500 450 400 200.0 350 300 150.0 250 200 100.0 150 50.0 100 50.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Oil Prod Gas Prod Water Prod Casing Pressure Tubing Pressure Line Pressure
MCFD Casing/FBHP PSI Well #3 GLAPL FBHP 300.0 250.0 Casing Pressure vs. FBHP Introduction of Plunger System w/ Injection Gas 600 500 200.0 400 150.0 300 100.0 200 50.0 100.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Gas Prod Casing Pressure Calculated FBHP Poly. (Calculated FBHP)
MCFD/BFPD Tubing/Casing/Line PSI Well #4 GLAPL Production 300.0 250.0 Continuous Gas Lift Daily Production Introduction of Plunger System w/ Injection Gas Compression Issues 400 350 300 200.0 250 150.0 200 100.0 150 100 50.0 50.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Oil Prod Gas Prod Water Prod Casing Pressure Tubing Pressure Line Pressure
MCFD Casi ng/fbhp PSI Well #4 GLAPL FBHP 300.0 250.0 200.0 Casing Pressure vs. FBHP Introduction of Plunger System w/ Injection Gas 450 400 350 300 150.0 100.0 250 200 150 50.0 100 50.0 3/17/2016 4/17/2016 5/17/2016 6/17/2016 7/17/2016 8/17/2016 9/17/2016 10/17/2016 11/17/2016 12/17/2016 1/17/2017 Gas Prod Casing Pressure Calculated FBHP Poly. (Casing Pressure)
Production Graph Summary GLAPL Improvements: Reduction of Liquid Hold Up, due to Sub-Critical Gas Velocities Removed paraffin build-up and prevented pressure restrictions throughout the tubing Reduced FBHP Minimized liquid fall back, and increased liquid production Feb. 20-22, 2017 2017 Gas Well Deliquification Workshop Denver, Colorado 16
Forward Looking Run Flowing Pressure/Temperature Survey to Identify Liquid Hold during continuous gas lift operations. Help predict further reductions in FBHP by the introduction of the Plunger Lift System. Experiment with different EOT placements to identify best liquid unloading EOT inclination point.
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