Upload
bruce-sharp
View
231
Download
5
Tags:
Embed Size (px)
Citation preview
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.