ALTECGAS LIFT

I SO 9002 Certified

LAFAYETTE, LA

NEW ORLEANS, LA

HOUSTON, TX

DESIGN PROCESS

DATA ACQUISITION

CORRELATION MATCH

SYSTEMS MATCH

PROJECTIONS

VALVE SELECTION

PRODUCTION OPTIMIZATION UTILIZING BALANCED PORTED VALVES

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_75 ˚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

BPV

IPO

Midperf@ 12747 ft (TVD)

Packer - 11524ft (TVD)

Jack Brink

0250500750100012501500175020002250250027503000325035003750400042504500475050005250550057506000625065006750700072507500775080008250850087509000925095009750100001025010500107501100011250115001175012000122501250012750130001325013500137501400014250145001475015000

-1 4 0 -1 2 0 -1 0 0 -8 0 -6 0 -4 0 -2 0 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0 2 2 0 2 4 0 2 6 0

BFPD 338BOPD 85INJ 500SBHP 3500

KO 880

Op 850

BFPD 206BOPD 206INJ 500SBHP 1500

TUBING AND CASING PRESSURE CHART

PROCESS

DATA ACQUISITION

SYSTEM ANALYSIS

VALVE SELECTION

PROPERLY GATHERED PRESSURE AND WELL TEST DATA ARE A MUST FOR ACCURATE MODELING RESULTS.

Flowing Gradient Profile - RIH API #

Port

MD TVD Choke Ptro

1503 1503 5/16 8 960

2405 2405 5/16 8 960

WLM 3216 3216 5/16 8 960

(feet) 3903 3903 5/16 8 960

0 4494 4494 5/16 8 910

1,470 4994 4994 5/16 8 910

3,183 5494 5494 5/16 10 910

4,461 5993 5993 5/16 10 910

4,961 6491 6491 5/16 10 910

5,960 7020 7020 5/16 10 910

6,458 7520 7520 5/16 10 910

6,987 8016 8016 5/16 10 910

7,983 8515 8515 5/16 10 910

8,482 9012 9012 5/16 10 910

8,979 9509 9509 5/16 10 910

9,974 10007 10000 5/16 10 910

10,472 10505 10505 5/16 10 910

10,900 11033 10990 5/16 10 910

11,000 11532 11459 3/16" 750

11,100

11,499

11,665

12,875

Qo = Tot. bbls ft

Qw = GOR =

Qtg = GLRi =

Qinj = GLRf =

% Cut = w =

FTP = o= Gauge S.N. TLS

Pcsg = g = Calibration Date

Choke = Mixed Grd. Build up Hours hrs

API = Fluid Level Total Shut Hours hrs

Psep = FBHP Gauge Start Time

Tsep = SBHP Shut in well

Tfluid = P@perfs Gauge Stop Time

SITP = PI =

PERSONNEL ONSITE: J ACOB LEGER

DATE:

Reservoir

N/A

Perforations

Tubulars

22.5

12,860' - 12,956' MD12,709' - 12,798' TVD

47-1076

12,256' MD.

30M1381

20.3

33.7#

Mandrels

0.012

0.042

0.006

0.012

0.012

0.012

SOUTH LOUISIANAINLAND WATER

0.014

0.349

Company:

Lease:

Well No:

Field:

210.75

0.108

1MARSH

0.009

0.008

0.008

0.105 0.005

0.078

0.072

0.066

Casing Size

KB to LMF

Tubing Size

0.380

2 3/ 8

0.011226.93

33

4.7#

7 5/ 8

0.011

0.011

(psi/ ft)

0.070

0.060

Temp

(o F/ ft)

Pres.

0.011

0.010

0.060

0.065

0.012

0.064

0.067

0.073

Packer

MD

(feet)

Temp

(o F)

8,016

205.65

0.292

0.063

181.51

82

0.0110760open29.5

8,515

6,491

8582

527

11,133

10,933

11,033

7,020

10,007

10,505

8,515

4,994

5,993

6,491

7,020

8,016

9,012

33

1,503

3,216

4,494

743

470

TVD

(feet)

33

1,503

3,216

4,494

4,994

5,993

10,895

10,990

11,084

9,012

10,000

10,491

1,024.17

12,753

1710

Well Test & Fluid Parameters

12,908 1,521.86

11,444 212.7911,532

Pres.

(psia)

126.43

228.64

171

-333

2749

-333

1.07

0.880

0.65

0.381

8,584

1,522

1,589

67

2.56

Time and Gauge Data

86.07

106.35

203.82

125.98

140.54

146.55

158.70

0.066

206.77

164.66

170.76

860.64

870.93

675.86

199.75

191.44

186.72

818.39

898.37

331.90

412.19

442.20

506.69

538.55

573.90

639.39

708.70

780.20

RIH AT100' per minute. Flow on

bottom for 1 hour, and shut in well for overnight

build up. POOH making 3 minute gradient stops.

06:58:58 11/ 09/ 01

10:28:30 11/ 09/ 01

08:57:04 11/ 10/ 01

Comments:

0.302 0.00811,698 11,617 1,076.38 214.10

ALTECGAS LIFT

ISO 9002 Certified

0

1

2

3

4

5

6

7

8

9

10

11

12

13

Pressure, in psi

Temperature, in oF

LOGGING IN HOLE 100’ PER MINUTE (TLS)

INJECTION POINT

CHOKSHI, SCHMIDT & DOTY

IDENTIFICATION OF BEST FIT CORRELATION TO EMPIRICAL PRESSURE AND WELL TEST

DATA

Pd

Pt

Pc

VALVE MECHANICS

DOME

CASING

TUBING

IPO BALANCE PORTED

GAS INLET

GAS INLET

PORT

CHOKE

PORT

Pd = (Pc) (1-R) + (Pt) (R)

Pc

Pd

Pc

Pt

Pd = (Pc) (1-R) + (Pt) (R)

Pd

Pt

Pc

IPO BALANCE

PORTED

VALVE MECHANICS

DOME

CASING

TUBING

GAS INLET CHOKE

PORT

Pd

Pc

Pt

Pd

Pt

Pc

PORT

GAS INLET Pt

Pd = (Pc) (1-R) + (Pt) (R)(Pd) (Ab) = (Pc) (Ab)

Pd = Pc

Pd

Pc

Pt

PORT

GAS INLET

Pt

CHOKE

CLOSED OPEN

BALANCE PORTED

VALVE MECHANICS

DOME

CASING

TUBING

GAS INLET CHOKE

PORT

Pd = (Pc) (1-R) + (Pt) (R)

Pc

Pd

Pc

Pt

Pd = (Pc) (1-R) + (Pt) (R)

Pd

Pc

Pt

Pt

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 p ACROSS SURFACE INJECTION GAS CHOKE.

• NO PRESSURE DROP - VALVE IDEAL FOR DUAL GAS LIFT WELLS.

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).

ACKNOWLEDGEMENT

ORGANIZERS OF 2002 ASME/API GAS-LIFT WORKSHOP

ALTECGAS LIFT

I SO 9002 Certified

PRODUCTION OPTIMIZATION UTILIZING BALANCED PORTED VALVESPrepared 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.