PUMP PROJECT Germania Unit Rate Forecasting Based on Other Waterflood Pilots in the Spraberry Area

PUMP PROJECT

Germania Unit Rate Forecasting Based on Other Waterflood Pilots in the Spraberry Area

PUMP PROJECT

Objectives

• To propose the location of new injection wells in the Germania Unit.

• To forecast the incremental oil recovery due to waterflooding in other waterflood Pilot area. The rate forecast is applied to Germania Unit for economic purpose.

PUMP PROJECT

Coupling between injector and producer Injector Waterflood

period On-trend well

Responding Off-trend well Responding Remarks

G.S.U. #6 01/72 - 05/89 GSU#12 Oil, gas and water

GSU#3 GSU#13

None None

G.S.U. #8 08/71 - 02/77 GSU#2 None GSU #1

GSU #7 Water None

G.S.U. #11 12/65 - 01/68

02/70 - 02/75 GSU#31 GSU#13 GSU#3 GSU#20 GSU#19

None None None None None

GSU#10 GSU#17 GSU#12 GSU#7

None None Oil, gas and water None

#19 was converted to WIW #12 was affected by WIW#6

G.S.U. #15 09/71 - 01/92 GSU#14 None

None GSU#13 GSU#16

None None

G.S.U. #19 06/70 - 01/77 GSU#10 Oil, gas and

water GSU#20 GSU#9

None Oil, gas and water ???

G.S.U. #22 06/70 - 01/76

GSU#16 GSU#26

Oil, gas and water Oil, gas and water

GSU#21 GSU#23 GSU#17 GSU#25

Water None None None

#21 was affected by WIW#27

G.S.U. #27 06/70 – 01/77 GSU#21 water GSU#26

GSU#20 None None

Coupling between Injector and Producers

1. The coupling is taken based on the production response in the on trend and off trend wells during the waterflood period.

2. This coupling could be used to determine the new location of injection wells.

PUMP PROJECT

1

11

1

11

1

2

1

1

11

1

2 8

1 61 6

1 71 7

1 5

1

1 81 8

2 1

2 62 6

2 7

2 02 0

2 3

2 52 5

2 22 2

1

22

1

1

34

2

9

2 4

1 0

1 91 9

11

1 2

2 9

2

1 3

1

2

1

3

1

1

1

1

1

1

1

3 0

11

4

1

2

1 41 4

1

3 1

1

1 6

1

6

1

1

1

1

1

4 0 7 A4 0 7 A

1 1 7 A

2 0 6 A

1 1 6 A

6 0 2 A

4 0 6 A

1 1 3 A

4 0 5 A

2 0 7 A

1 1 8 A

4 0 8 A

1 2 1 A

2 0 8 A

3 1 0 A

1 1 9 A

5 0 2 A

4 0 9 A

1 2 3 A

3 1 3 A

1 2 4 A

2

1 2 6 A

1 2 5 A2 0 9 A

4 1 0 A

1 2 9 A

4 1 1 A

1 3 0 A

2 1 0 A

1 3 1 A

2 1 1 A

6 0 3 A

3 1 8 A

3 1 7 A

1 3 2 A

5 0 3 A

1

11

1

2

1

411

2

11

2

2

1

3 1 4 A

3 1 5 A

1

1

1

1

1

1 31 3

7

2

8

1 6

5

1 4

3

1

1

1

1

2

1

3

1

1

3

1

3

11

2 0 5 A

3 0 8 A

1 1 4 A

3 0 9 A

1 1 5 A

3 1 1 A

1 2 0 A

1 2 2 A

3 1 2 A

1 2 7 A

1 2 8 A

3 1 6 A

1 3 3 A

1 3 4 A

1 3 5 A

1 3 6 A

1 3 7 A

1 3 8 A

1 3 9 A

1 4 0 A

1 4 1 A

1 4 2 A

1 4 3 A

1 4 4 A

1 4 5 A

1 4 6 A

2 1 3 A

2 1 2 A

2 1 4 A

2 1 5 A

2 1 6 A

4 1 2 A

4 1 3 A

4 1 5 A

4 1 4 A

5 0 4 A

6 0 4 A

3 1 9 A3 2 0 A

3 2 1 A

3 2 2 A

3 2 3 A

3 2 4 A

3 2 5 A

3 2 6 A

3 2 7 A

3 3 1 A

3 2 9 A

3 3 0 A

3 2 8 A

3 3 2 A

G erm ania (Spraberry) U nit

P ro p o s ed In jec tio n W ells

M id lan d C o ., T exas

F E E T

0 2 ,0 0 0 4 ,0 0 0

P O ST E D W E L L D A T A

W ell L ab e l

A T T R I B U T E M A PP r o p o se d I n j e c to r sO ld I n j e c to r s

W E L L SY M B O L SO il W e ll

D r y H o le

Se r v ic e W e ll

T e m p . A b n ' d O il

P lu g g e d & A b n ' d

A b a n d o n e d I n j e c to r

P U D

W a te r Su p p ly

B y: C .F . R o u n d in g

Ju n e 1 3 , 2 0 0 2

PE T R A 6 / 1 3 / 2 0 0 2 2 : 5 9 : 0 6 PM

Germania (Spraberry) Unit Layout

1. The red line indicates a coupling between an injector and producers and rectangular box indicates the well has available production history.

2. WIWs #8, 11, and 15 did not have significant effect on surrounding oil production wells.

3. The production responses obtained from coupling between an injector and producers are parallel to the fracture orientation in NE-SW direction.

PUMP PROJECT

Germania (Spraberry) Unit LayoutThe green ring fence is taken from the O’Daniel Pilot assuming this unit would behaves similar response.

The circle mark indicates the proposed injection wells. From the coupling between injection and production shows that the location of proposed injection wells #408A and 10 should be relocated because they are along old injector path.

The wells that have shown good waterflood response in the other Pilots are analyzed to determine the incremental oil recovery during waterflooding. The results are applied to Germania Unit for economic purpose.

1

11

1

11

1

2

1

1

11

1

2 8

1 61 6

1 71 7

1 5

1

1 81 8

2 1

2 62 6

2 7

2 02 0

2 3

2 52 5

2 22 2

1

22

1

1

34

2

9

2 4

1 0

1 91 9

11

1 2

2 9

2

1 3

1

2

1

3

1

1

1

1

1

1

1

3 0

11

4

1

2

1 41 4

1

3 1

1

1 6

1

6

1

1

1

1

1

4 0 7 A4 0 7 A

1 1 7 A

2 0 6 A

1 1 6 A

6 0 2 A

4 0 6 A

1 1 3 A

4 0 5 A

2 0 7 A

1 1 8 A

4 0 8 A

1 2 1 A

2 0 8 A

3 1 0 A

1 1 9 A

5 0 2 A

4 0 9 A

1 2 3 A

3 1 3 A

1 2 4 A

2

1 2 6 A

1 2 5 A2 0 9 A

4 1 0 A

1 2 9 A

4 1 1 A

1 3 0 A

2 1 0 A

1 3 1 A

2 1 1 A

6 0 3 A

3 1 8 A

3 1 7 A

1 3 2 A

5 0 3 A

1

11

1

2

1

411

2

11

2

2

1

3 1 4 A

3 1 5 A

1

1

1

1

1

1 31 3

7

2

8

1 6

5

1 4

3

1

1

1

1

2

1

3

1

1

3

1

3

11

2 0 5 A

3 0 8 A

1 1 4 A

3 0 9 A

1 1 5 A

3 1 1 A

1 2 0 A

1 2 2 A

3 1 2 A

1 2 7 A

1 2 8 A

3 1 6 A

1 3 3 A

1 3 4 A

1 3 5 A

1 3 6 A

1 3 7 A

1 3 8 A

1 3 9 A

1 4 0 A

1 4 1 A

1 4 2 A

1 4 3 A

1 4 4 A

1 4 5 A

1 4 6 A

2 1 3 A

2 1 2 A

2 1 4 A

2 1 5 A

2 1 6 A

4 1 2 A

4 1 3 A

4 1 5 A

4 1 4 A

5 0 4 A

6 0 4 A

3 1 9 A3 2 0 A

3 2 1 A

3 2 2 A

3 2 3 A

3 2 4 A

3 2 5 A

3 2 6 A

3 2 7 A

3 3 1 A

3 2 9 A

3 3 0 A

3 2 8 A

3 3 2 A

G erm ania (Spraberry) U nit

P ro p o s ed In jec tio n W ells

M id lan d C o ., T exas

F E E T

0 2 ,0 0 0 4 ,0 0 0

P O ST E D W E L L D A T A

W ell L ab e l

A T T R I B U T E M A PP r o p o se d I n j e c to r sO ld I n j e c to r s

W E L L SY M B O L SO il W e ll

D r y H o le

Se r v ic e W e ll

T e m p . A b n ' d O il

P lu g g e d & A b n ' d

A b a n d o n e d I n j e c to r

P U D

W a te r Su p p ly

B y: C .F . R o u n d in g

Ju n e 1 3 , 2 0 0 2

PE T R A 6 / 1 3 / 2 0 0 2 2 : 5 9 : 0 6 PM

PUMP PROJECT

Water Injection in The Germania Unit

0

5000

10000

15000

20000

25000

Jun-68 Mar-71 Dec-73 Aug-76 May-79 Feb-82 Nov-84 Aug-87 May-90 Jan-93

TIME (DATE)

INJ

EC

TIO

N R

AT

E (

BB

LS

/MO

)

0

500000

1000000

1500000

2000000

2500000

3000000

CU

M. I

NJ

EC

TIO

N R

AT

E (

BB

LS

)

GSU-19 GSU-6 GSU-22 GSU-27 Cum. Injection

PUMP PROJECT

10

100

1000

10000

Jun-57 Dec-62 Jun-68 Dec-73 May-79 Nov-84 May-90 Oct-95

TIME (DATE)

OIL

RA

TE

(B

BL

S/M

ON

TH

)

100

1000

10000

100000

GA

S R

AT

E (

MS

CF

/MO

) AN

D W

AT

ER

RA

TE

(B

BL

S/M

O)

GSU - 10

Production Summary of GSU - 10

PUMP PROJECT

1

10

100

1000

Jun-57 Dec-62 Jun-68 Dec-73 May-79 Nov-84 May-90 Oct-95

TIME (DATE)

OIL

PR

OD

UC

TIO

N (

BB

LS

/D)

GSU - 10

Waterflood started(Jun-1970)

Waterflood ended(Jan-1977)

Decline Curve Analysis of GSU – 10 (GSU – 19 as an Injector)

PUMP PROJECT

0

500

1000

1500

2000

2500

Sep-65 Jun-68 Mar-71 Dec-73 Aug-76 May-79 Feb-82 Nov-84 Aug-87 May-90 Jan-93

Time (Date)

Tota

l Oil

Pro

du

cti

on

Ra

te (

BO

PM

)

0

1

2

3

4

5

6

No

. Of

We

lls

Total Incremental Oil Rate Due to Waterflood in The Germania Unit

PUMP PROJECT

0

10000

20000

30000

40000

50000

60000

70000

80000

90000

Sep-65 Jun-68 Mar-71 Dec-73 Aug-76 May-79 Feb-82 Nov-84 Aug-87 May-90 Jan-93

Time (Date)

Cu

mu

lati

ve

Oil

Pro

du

cti

on

(B

BL

S)

0

1

2

3

4

5

6

No

. Of

We

lls

Cumulative Oil Recovery Due to Waterflood in The Germania Unit

PUMP PROJECT

Production Summary of The Germania Unit

0

20,000

40,000

60,000

80,000

100,000

120,000

Jun-68 Dec-73 May-79 Nov-84 May-90 Oct-95 Apr-01 Oct-06

TIME (DATE)

PR

OD

UC

TIO

N R

AT

E

0

10

20

30

40

50

60

70

NU

MB

ER

OF

WE

LL

S

OIL (STB/M) GAS (MSCF/M) WATER (BBLS/M) No. OF WELLS

PUMP PROJECT

0.00

200.00

400.00

600.00

800.00

1000.00

1200.00

Sep-91 Jun-94 Mar-97 Dec-99 Sep-02 May-05 Feb-08

TIME (DATE)

PR

OD

UC

TIO

N R

AT

E

0

10

20

30

40

50

60

70

NU

MB

ER

OF

WE

LL

S

OIL (STB/D) BaseLine ET ODaniel Rate 125% Dec. Rate 75% Dec. Rate No. OF WELLS

125% Decline Rate

Baseline

75% Decline Rate

Incremental oil expected due to waterflood respond. Note : 5 out of 55 producers are converted to injectors

Future Forecasting

Decline Curve Analysis in The Germania Unit

PUMP PROJECT

200.00

300.00

400.00

500.00

Nov-01 May-02 Dec-02 Jun-03 Jan-04 Aug-04 Feb-05 Sep-05

TIME (DATE)

PR

OD

UC

TIO

N R

AT

E

125% Decline Rate

Baseline

75% Decline Rate

Rate Forecasting based on Incremental Oil from ET O’Daniel Area

PUMP PROJECT

0.00

200.00

400.00

600.00

800.00

1000.00

1200.00

Sep-91 Jun-94 Mar-97 Dec-99 Sep-02 May-05 Feb-08

TIME (DATE)

PR

OD

UC

TIO

N R

AT

E

0

10

20

30

40

50

60

70

NU

MB

ER

OF

WE

LL

S

OIL (STB/M) Decline Line Expected Waterflood Respond No. OF WELLS

Incremental oil due to increasing number of wells

Incremental oil expected due to waterflood respond. Note : 5 out of 41 producers are converted to injectors

Infill Well vs. Waterflooding

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0

20000

40000

60000

80000

100000

120000

140000

0 200 400 600 800 1000 1200 1400 1600 1800

TIME (DAYS)

CU

MU

LA

TIV

E P

RO

DU

CT

ION

(B

BL

S)

Infill Wells Waterflood Respond

Incremental oil due to 15 infill wells

Expected Waterflood RespondNote : 5 out of 41 producers are converted to injectors

Cumulative Oil Comparison between Infill Well and Waterflooding Scenarios

PUMP PROJECT

Decline Curve AnalysisOBrien B1, Brunson F1, Brunson C2

and Brunson G1

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Oil Production History O’Brien B1 and Brunson F1

-

20

40

60

80

100

120

140

160

12/21/98 7/9/99 1/25/00 8/12/00 2/28/01 9/16/01 4/4/02 10/21/02

Time (Date)

Oil

Pro

du

cti

on

Ra

te (

BO

PD

)

Brunson F1OBrien B1

PUMP PROJECT

Decline Curve AnalysisOBrien B1

-

20

40

60

80

100

120

140

160

12/21/98 7/9/99 1/25/00 8/12/00 2/28/01 9/16/01 4/4/02 10/21/02

Time (Date)

Oil

Pro

du

cti

on

Ra

te (

BO

PD

)

Waterflood Started(October 1999)

CO2 Injection Started(2/26/2001)

Lease Electrified 1/24/01

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Comparison Cumulative Oil Recovery Due to Waterflood and CO2 Injection

0

10000

20000

30000

40000

50000

60000

2/9/99 8/28/99 3/15/00 10/1/00 4/19/01 11/5/01 5/24/02 12/10/02

Time (Date)

Cu

mu

lati

ve

Oil

Pro

du

cti

on

(B

BL

S)



Shut-in well # 38 and 39,CO2 injector #42 and 44,

Water injector# 48(3/16/2002)

Brunson F1

Brunson C2

Brunson G1

OBrien B1

PUMP PROJECT

Total Cumulative Oil Recovery Due to Waterflood and CO2 Injection

0

20000

40000

60000

80000

100000

120000

2/9/99 8/28/99 3/15/00 10/1/00 4/19/01 11/5/01 5/24/02 12/10/02

Time (Date)

Cu

mu

lati

ve

Oil

Pro

du

cti

on

(B

BL

S)

0

1

2

3

4

5

Nu

mb

er

of

We

lls





PUMP PROJECT

0.00

50.00

100.00

150.00

200.00

250.00

2/9/99 8/28/99 3/15/00 10/1/00 4/19/01 11/5/01 5/24/02 12/10/02

Time (Date)

Oil

Pro

du

cti

on

Ra

te (

BO

PD

)

0

1

2

3

4

5

Nu

mb

er

of

We

lls





Total Incremental Oil Rate Due to Waterflood and CO2 Injection in The E.T O’Daniel Pilot

PUMP PROJECT

Water Injection in The E.T O’Daniel Pilot Area

0

500

1000

1500

2000

2500

02/09/99 08/28/99 03/15/00 10/01/00 04/19/01 11/05/01 05/24/02 12/10/02

Time (Date)

Wa

ter

an

d C

O2

Inje

cti

on

Ra

te (

ST

BW

/D

an

d M

SC

F/D

)

0

200000

400000

600000

800000

1000000

1200000

1400000

1600000

1800000

Cu

m. W

ater

an

d C

O2

Inje

ctio

n (

BB

LS

an

d M

SC

FS

)

Water Injection Rate CO2 Injection Rate Cum. Water Injection Cum. CO2 Injection

PUMP PROJECT

0.00

20.00

40.00

60.00

80.00

100.00

120.00

05/11/93 08/19/93 11/27/93 03/07/94 06/15/94 09/23/94 01/01/95 04/11/95 07/20/95 10/28/95 02/05/96

Time (Date)

Oil

Pro

du

cti

on

Ra

te (

BO

PD

)

0

2

4

6

8

10

12

14

16

Start of water injection(4 July 93)

End of water injection(25 Nov 95)

Total Incremental Oil Rate Due to Waterflood in The Upper “McDonald” Pilot

PUMP PROJECT

Cumulative Oil Recovery Due to Waterflood in The Upper “McDonald” Pilot

0

5000

10000

15000

20000

25000

30000

35000

40000

45000

50000

05/11/93 08/19/93 11/27/93 03/07/94 06/15/94 09/23/94 01/01/95 04/11/95 07/20/95 10/28/95 02/05/96

Time (Date)

Oil

Pro

du

cti

on

(B

BL

S)

Start of water injection(4 July 93)

End of water injection(25 Nov 95)

PUMP PROJECT

0

200

400

600

800

1000

1200

1400

31-Jan-93 19-Aug-93 7-Mar-94 23-Sep-94 11-Apr-95 28-Oct-95 15-May-96

Time (Date)

Inje

cti

on

Ra

te (

ST

BW

/D)

0

200000

400000

600000

800000

1000000

1200000

1400000

1600000

Tota

l In

jec

tio

n (

BB

LS

)

1210W 1405W 1906W 2011W Total Rate

Water Injection in The Midkiff Unit

PUMP PROJECT

0

20

40

60

80

100

120

140

160

04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Time (Date)

Oil

Pro

du

cti

on

Ra

te (

BO

PD

)

0

2

4

6

8

10

12

14

16

18

20

Nu

mb

er

of

We

lls

Waterflood Started(1996)

Total Incremental Oil Rate Due to Waterflood in The “Heckman” Pilot

PUMP PROJECT

Cumulative Oil Recovery Due to Waterflood in The “Heckman” Pilot

0

10000

20000

30000

40000

50000

60000

70000

04/11/95 10/28/95 05/15/96 12/01/96 06/19/97 01/05/98 07/24/98

Time (Date)

Oil

Pro

du

cti

on

(B

BL

S)

Waterflood Started(1996)

PUMP PROJECT

Pilot Area Duration of Waterflooding,

Years

Cum. Water Injection /No. of injection wells

Cum. Oil Production /No. of production wells

Germania ~ 19 ~2,500,000 (4) ~80,000 (5)

E.T O’Daniel

~ 3 ~1,600,000 (6) ~110,000 (4)

“Mc Donald”

~ 2 ~1,400,000* (4) ~40,000 (15)

“Heckman” Since 1996 - ~60,000 (18)

SUMMARY

* Injected in the Upper and Lower Spraberry

PUMP PROJECT

OFM PRELIMINARY RESULTS

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Germania Unit Location

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Example of Bubble Map of Water Cut

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Example of Water Cumulative Map

PUMP PROJECT

FUTURE WORK

• Improve OFM model to get external data from other Database systems, such as ODBC (Microsoft Access, Dwights and PI).

• Perform similar tasks for ET O’Daniel Pilot Area (Gokul is responsible for this task)

• Perform reservoir simulation

Documents

PUMP PROJECT Germania Unit Rate Forecasting Based on Other Waterflood Pilots in the Spraberry Area