Pressure Activated Chamber Technology (PACT)

Transcription

1 Gas Well Deliquification Workshop Sheraton Hotel, February 23-26, 2009 Pressure Activated Chamber Technology (PACT) A new artificial lift system for CBM wells Leslie Lam, Black Hills Exploration Ryan Davis, Merrion Oil & Gas Mark Turland, ProActive Pumping Solutions Jim Wetzel, Nojak Pumping Solutions

2 Copyright Rights to this presentation are owned by the company(ies) and/or author(s) listed on the title page. By submitting this presentation to the Gas Well Deliquification Workshop, they grant to the Workshop, the Artificial Lift Research and Development Council (ALRDC), and the Southwestern Petroleum Short Course (SWPSC), rights to: Display the presentation at the Workshop. Place it on the web site, with access to the site to be as directed by the Workshop Steering Committee. Place it on a CD for distribution and/or sale as directed by the Workshop Steering Committee. Other uses of this presentation are prohibited without the expressed written permission of the company(ies) and/or author(s) who own it and the Workshop Steering Committee. 2

3 INTRODUCTION PACT technology applied to CBM and other wells in San Juan Basin PACT is being used to replace conventional rod pumping systems and plunger lift systems PACT system has no moving parts at surface and a very small footprint PACT uses very little energy and discharges no emissions 3

4 CONVENTIONAL ARTIFICIAL LIFT SYSTEMS (ALS) Critical issues to be considered in selecting an artificial lift system Geographic location Well bore design Depth MD & TVD Production requirements Operating pressures Properties of produced fluids Availability of electricity Companies operating philosophy 4

5 ALS FOR CBM WELLS Artificial lift systems currently in use in CBM wells in San Juan Basin Sucker Rod Pumping System (SRPS) Plunger Lift System (PLS) Electric Submersible Pump (ESP) Progressive Cavity Pump (PCP) Well Head Compression 5

6 SUCKER ROD PUMPING SYSTEM (SRPS) Well conditions and operating practices that reduce system efficiency No electricity Low produced fluid volume Fluid pound Gas engines limiting pump off controllers Tagging the pump Water lubrication Stuffing box leakage Safety 6

7 PLUNGER LIFT SYSTEMS (PLS) Factors affecting effectiveness of plunger lift systems Low producing bottom hole pressure Sticking plungers Compressor issues High sales line pressure Harmful emissions Reservoir problems 7

8 PRESSURE ACTIVATED CHAMBER TECHNOLOGY (PACT) System Overview Uses compressed gas from compressor to lift fluids Uses chambers connected by polytubing and supported by wireline, spaced 250 apart inside casing Compressed gas forces fluid to be lifted in timed cycles from one chamber to the next Optimized by adjusting cycle times 8

9 PRESSURE ACTIVATED CHAMBER TECHNOLOGY (PACT) 160 SYSTEM PUM PING CAPACITY 140 Pump Capacity (bbls/day) Model /8in gas lines 10ft chambers Model /2in gas lines 10ft chambers Model /2in gas lines 20ft chambers Pump Depth (ft) 9

10 CASE HISTORIES 3 wells are in operation using the PACT system Merrion Oil & Gas Panther #1 Merrion Oil & Gas Vine Com #1 Black Hills Exploration Jicarilla #2 10

11 PANTHER #1 Operating parameters (SRPS) Pump depth 1750 Fluid production 22 bbls/day Gas production 185 mcf/day Location has electricity SRPS had well pumped off and pounding fluid SRPS has electric prime mover controlled by % timer Stuffing box leaks are an ongoing issue 11

12 PANTHER #1 12

13 PANTHER #1 Pumping System Configuration Merrion Oil & Gas Corporation Pump Depth 1756 Casing 4 ½ Installation 11/4/

14 PANTHER #1 PACT system results Water production 18 bbls/day Gas production 165 mcf/day Fluid level at 1630 ffs Based on compressed gas usage the energy cost is expected to be 14% of the compressor power consumption* * Compressor oversized for well conditions and goes into recirculation mode several times a day. 14

15 PANTHER #1 15

16 PANTHER #1 16

17 PANTHER #1 Factors affecting PACT performance System capacity miscalculated System freezing Compressor downtime Operator training Lack of excess capacity 17

18 VINE COM #1 Operating parameters (SRPS) Pump depth 1250 Water production 18 bbls/day Gas production 220 mcf/day Location has electricity SRPS had well pumped off and pounding fluid SRPS has electric prime mover controlled by % timer Stuffing box leaks are an ongoing issue 18

19 VINE COM #1 19

20 VINE COM #1 Pumping System configuration Merrion Oil & Gas Corporation Pump Depth 1248 Casing 4 ½ Installation 11/6/

21 VINE COM #1 PACT system results Water production dropped to 6 bbls/day Gas production increased to 225 mcf/day Fluid level shots verified that the system was pumped off Based on compressed gas usage the energy cost is expected to be 5% of the compressor power consumption 21

22 VINE COM #1 22

23 VINE COM #1 23

24 VINE COM #1 Factors affecting PACT performance System freezing Compressor downtime Operator training Lack of excess capacity 24

25 JICARILLA #2 Operating parameters Perforations at 1300 Low pressure flowing gas well Initial production Oct mcf/day 4 bbls/day 2008 production 30 mcf/day 0 fluid Well head compression unsuccessful Swab tested Sep mcf/day 60 bbls/day 25

26 JICARILLA #2 Production History 6000 Black Hill Gas Resources Jicarilla # Mcf/Mo BW/Mo 26 10/2001 1/2002 4/2002 7/ /2002 1/2003 4/2003 7/ /2003 1/2004 4/2004 7/ /2004 1/2005 4/2005 7/ /2005 1/2006 4/2006 7/ /2006 1/2007 4/2007 7/2007 1/ /2007 4/2008 7/ /2008

27 JICARILLA #2 PACT system results First artificial lift installed on well Water level pulled below perforations after 3 weeks, production stable Fluid production 15 bbls/day Gas production 110 mcf/day Based on compressed gas usage the energy cost is expected to be 12% of the compressor power consumption 27

28 JICARILLA #2 Installation concerns A frame not tall enough for installation over BOP Poly tubing and support cable controlled separately while de-spooling in well Small pieces used in installation could fall in well Unable to land assembly with BOP installed Difficulty installing BOP 28

29 JICARILLA #2 29

30 JICARILLA #2 30

31 CONCLUSIONS Installation requires provision to eliminate system freezing Pumping capacity must allow for expected compressor down time Improved operator training for system optimization is required Efficient and effective deliquification method Very environmentally friendly and safe 31

32 Disclaimer The following disclaimer shall be included as the last page of a Technical Presentation or Continuing Education Course. A similar disclaimer is included on the front page of the Gas Well Deliquification Web Site. The Artificial Lift Research and Development Council and its officers and trustees, and the Gas Well Deliquification Workshop Steering Committee members, and their supporting organizations and companies (here-in-after referred to as the Sponsoring Organizations), and the author(s) of this Technical Presentation or Continuing Education Training Course and their company(ies), provide this presentation and/or training material at the Gas Well Deliquification Workshop "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 and/or training materials 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. 32