Design of Sucker Rod Systems

Transcription

1 4 th Annual Sucker Rod Pumping Workshop Hilton North Hotel, Houston, Texas September 9 12, 2008 Design of Sucker Rod Systems Plan for Conversion from Flowing to Pumping Robert Harris H & H Well Services, LLC James Harris H & H Well Services, LLC H & H WELL SERVICES, LLC Computerized Diagnostic Testing Services

2 Goal of Any Production Method Reduce the Producing Bottom Hole Pressure to the minimum pressure, within cost constraints, to allow the reservoir pressure to push the fluids and gas to the wellbore Sucker Rod Pumping Workshop 2

3 How Do You Select the Best Artificial Lift Method? Plunger-Lift Progressive Cavity Pumps Rod Pump Foaming Systems Electric Submersible Pumps Jet Pumps Gas-Lift Expected Liquid and Gas Production rates Well Completion Experience Best Average Production & Lowest Life-Cycle Cost 2008 Sucker Rod Pumping Workshop 3

4 Deciding on Artificial Lift Production Method Data you need to review Historic production data BOPD, BWPD, Mcf/D Production reports Decline curves & IPR/PI curves Swab reports Determine how the well was produced prior to moving to artificial lift Talk to the Gaugers/Pumpers Production history of other wells in same formation 2008 Sucker Rod Pumping Workshop 4

5 Deciding on Artificial Lift Production Method Data you need to review (cont.) The wellbore drawing/drilling report Casing size Deviation Study Packers Perforations depth PBTD/Fill depth How Much Rat Hole Review the prime mover power sources field gas or electricity 2008 Sucker Rod Pumping Workshop 5

6 Rod Pump Application Graph Assumes: Pumping Unit has the torque and beam to pull the load Tubing size is adequate for rod string required No gas interference Bbls/Day Graph Illustrating the Window of Rod Pump Application 2008 Sucker Rod Pumping Workshop 6

7 Different Rod Pumping Units Same Task Go Up & Down and Lift Fluid 2008 Sucker Rod Pumping Workshop 7

8 Considerations in Rod Pump System Design Target Production Casing Size Perforations depth Vertical or Deviated or Horizontal PBTD/Fill depth Sand Problems Frac sand or Formation Sand Expected Producing Fluid Level Gas Fluid Ratio Pump Intake Location Prime Mover Energy Source 2008 Sucker Rod Pumping Workshop 8

9 Design Dependencies Target Production BFPD Mcf/D 2008 Sucker Rod Pumping Workshop 9

10 Rod Pump System Design Process 2008 Sucker Rod Pumping Workshop 10

11 Rod Pump System Design Process 2008 Sucker Rod Pumping Workshop 11

12 Example 1 Wellbore Flowing Oil Well Horizontal well with `8000 lateral Kickoff 10 degrees per BOPD, 50 BWPD, 600 Mcf/D avg 8080 Packer 8249 Directional Well w/ 8,080 ft. Built to deg/100 ft & hold to casing 8,300 ft. 16 deg per 100 ft to 93 deg Sucker Rod Pumping Workshop 12

13 Example 1 Flowing Production BFPD Mcf/D Barrels/Hour 2008 Sucker Rod Pumping Workshop 13

14 Example 1 Deviation 2008 Sucker Rod Pumping Workshop 14

15 Example 1 - Predictive Target Production 400 BFPD 500 Mcf/D avg Solution ~8053 ~8180 ~50 degrees ~ SPM Downhole gas separator 1-3/4 Insert Pump Gas tolerant Pump 86 High Strength SR String Molded guides thru TAC 2008 Sucker Rod Pumping Workshop 15

16 Example 2 - Wellbore Perfs 10,532 10,554 PB/Fill 11, Sucker Rod Pumping Workshop 16

17 Example 2 Historic Production 2008 Sucker Rod Pumping Workshop 17

18 Example 2 - Predictive Target Production 100 BFPD 500 Mcf/D avg Solution ~10,400 ~10,654 [Perfs ] ~10,722 8 SPM 1-1/4 Insert Pump Standard API Pump 76 High Strength SR String Molded guides thru TAC 2008 Sucker Rod Pumping Workshop 18

19 Schedules Today s Reality 2008 Sucker Rod Pumping Workshop 19

20 Schedules Today s Reality 2008 Sucker Rod Pumping Workshop 20

21 Conclusions Every well is different Understand the production and productivity What did it make How did it make it Treat every well as if it is producing gas Rat Hole is your friend Generally, Rod Pump will take the well from flowing to depletion Be Aware of today s Schedules for supplies 2008 Sucker Rod Pumping Workshop 21

22 QUESTIONS? 2008 Sucker Rod Pumping Workshop 22

23 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 Sucker Rod Pumping 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 Sucker Rod Pumping Workshop 23

24 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 Sucker Rod Pumping Web Site. The Artificial Lift Research and Development Council and its officers and trustees, and the Sucker Rod Pumping 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 Sucker Rod Pumping 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 Sucker Rod Pumping Workshop 24