1. LAFAYETTE, LA
NEW ORLEANS, LA
HOUSTON, TX

2. PRODUCTION OPTIMIZATION UTILIZING BALANCED PORTED VALVES
DESIGN PROCESS
DATA ACQUISITION
CORRELATION MATCH
SYSTEMS MATCH
PROJECTIONS
VALVE SELECTION

3. DESIGN INFORMATION COMPANY _SOUTH LOUISIANA_____
LEASE _INLAND WATERS ____
WELL No. _1___________________
FIELD _MARSH______________
GAS PRESSURE: KICKOFF _880___ psi
GAS PRESSURE: OPERATING _850___ psi
TUBING BACK PRESSURE _150___ psi
BOTTOM HOLE PRESSURE _1500__ psi WATER FLOOD MAX 3500#
TUBING DATA _ 2_3/8” _ 4.7 #_ SURFACE STATIC TEMPERATURE _ ˚F
CASING DATA _7 5/8”__ _33.7#__ SURFACE FLOWING TEMPERATURE _110__ ˚F
I.G SPEC GRAVITY _.65____ BOTTOM HOLE TEMPERATURE _227__ ˚F
PROJECTED RATE _206___ bfpd
% H2O _10____ % PERFORATIONS
GOR _100___ scf/bbl _12850_ - _12950_ ft - MD
PI _2.50___ bbls/day/psi _12700_ - _12793_ ft - TVD
GRAVITY: OIL _32____ ˚ API
GRAVITY: WATER _1.07___
COMP. FLUID GRAD _.465___ psi/ft
LONG STRING OF DUAL WELL

4. BPV
IPO

5. KO Op
BFPD
BOPD 85
INJ
SBHP
BFPD
BOPD 206
INJ
SBHP

6. TUBING AND CASING PRESSURE CHART

7. PROCESS
DATA ACQUISITION
SYSTEM ANALYSIS
VALVE SELECTION

8. PROPERLY GATHERED PRESSURE AND WELL TEST DATA ARE A MUST FOR ACCURATE MODELING RESULTS.
LOGGING IN HOLE 100’ PER MINUTE (TLS)
INJECTION POINT

9. CHOKSHI, SCHMIDT & DOTY
IDENTIFICATION OF BEST FIT CORRELATION TO EMPIRICAL PRESSURE AND WELL TEST DATA

12. VALVE MECHANICS BALANCE PORTED IPO DOME CASING TUBING GAS INLET PORT
CHOKE
Pd = (Pc) (1-R) + (Pt) (R) Pc Pd Pt Pd Pc Pt

13. VALVE MECHANICS BALANCE PORTED IPO DOME CASING TUBING Pd Pc GAS INLET
CHOKE
PORT Pd Pc Pt
Pd = (Pc) (1-R) + (Pt) (R)
(Pd) (Ab) = (Pc) (Ab)
Pd = Pc

14. VALVE MECHANICS BALANCE PORTED DOME CASING TUBING GAS INLET CHOKE PORT
Pd = (Pc) (1-R) + (Pt) (R) Pc Pd Pt Pd Pc
GAS INLET
CHOKE Pt
PORT Pt
CLOSED
OPEN

15. BALANCE PORTED VALVE ADVANTAGES
MAXIMUM INJECTION PRESSURE - OPTIMUM DEPTH OF INJECTION.
EFFICIENT AND PREDICTABLE GAS PASSAGE - THROUGH UPSTREAM CHOKE.
MINIMIZES EROSION OF SEAT AREA - PRESSURE DROP TAKEN ACROSS UPSTREAM CHOKE.
REDUCES FREEZING - MINIMUM Dp ACROSS SURFACE INJECTION GAS CHOKE.
NO PRESSURE DROP - VALVE IDEAL FOR DUAL GAS LIFT WELLS.

16. CONCLUSIONS
WELL LIFTING AT DEEPEST POSSIBLE POINT AT PRESENT INJECTION GAS RATE.
BALANCE PORTED TYPE VALVE ALLOWS WELL TO UNLOAD AND PRODUCE AT OPTIMUM RATE WITH INITIAL DESIGN AND SINGLE POINT INJECTION.
COULD NOT BE ACHIEVED WITH IPO OR PPO VALVES WITH INITIAL DESIGN.
$51,000 MONTHLY REVENUE INCREASE REALIZED FROM UTILIZATION OF BALANCE PORTED GAS LIFT VALVES ($19.00/BBL).

17. ACKNOWLEDGEMENT
ORGANIZERS OF 2002 ASME/API GAS-LIFT WORKSHOP

18. PRODUCTION OPTIMIZATION UTILIZING BALANCED PORTED VALVES
Prepared by Altec sales group for ASME Gas Lift Workshop, February 6, 2002
Abstract
With most current production and artificial lift modeling programs, it is possible to compare properly gathered empirical pressure and well test data with calculated correlations. It is important that a wide selection of calculated correlations be available for comparison so that best correlation for user conditions and parameters can be identified. Once the correct correlation is identified, results will mimic existing conditions. Subsequent sensitivity simulations will produce accurate projections as to how the well will respond to facility revisions, reservoir stimulation or artificial lift revisions.
When Gas Lift is the means of artificial lift, the choices for equipment types are usually limited to injection pressure operated valves, producing pressure operated valves and a small selection of other type valves. In many cases, the user is not aware of the advantages of other type valves and does not consider them in evaluating the maximum potential. One such type valve is the balance ported valve. Balance ported valves are ported and choked so that opening and closing forces are equal. This is accomplished by preventing the ball stem’s seating area from sensing casing pressure when the valve is in the open position. Balance ported valves have been in service for many years under several different trade names and porting configurations. Altec Gas Lift Inc. has ran thousands of one such type valve since 1984, the Constant Flow(R) Valve protected under U.S. Patent No. 4,625,941.
This presentation will cover a project that illustrates the advantages of proper modeling techniques and utilization of balance ported valves.