Fracture Technologies

History Match Using WellWhizHistory Match Using WellWhiz

Fracture Technologies Ltd.Fracture Technologies Ltd.

WellWhiz PEA-74WellWhiz PEA-74

Fracture Technologies

Over ViewJune 2002-June 2003

Over ViewJune 2002-June 2003

Module Description

Number ofParticipants

Required PerProject

Status ofProject as of

June 2003

Module-1

Fitting equationsinto lab data and

importing intoWellWhiz

3Completed

0%(Waiting on

data)

Module-2

History matchingwell tests withsimulation to

match Beta fromthe field*

5 Completed 6ea

80%

Module-3Condensate drop

out5

Completed100%

Module-4Complete 3D

Editor10 10

In Progress

Fracture TechnologiesSummarySummary

• The intention of this project is to assess the The intention of this project is to assess the effectiveness of matching the post Frac test effectiveness of matching the post Frac test data, in order to match a Beta for the data, in order to match a Beta for the proppant size utilised in the fracproppant size utilised in the frac

• A total of six wells have been matched, out of A total of six wells have been matched, out of which three are presented herewhich three are presented here

• Three examples are presented for the Three examples are presented for the following proppant sizes.following proppant sizes.• 20/40 single phase20/40 single phase• 16/20 multi-phase (oil and gas)16/20 multi-phase (oil and gas)• 12/18 single phase12/18 single phase

Fracture Technologies

Modeling Non Darcy Effects in a Fracture (Theoretical Equ)

Modeling Non Darcy Effects in a Fracture (Theoretical Equ)

• For two phase non-Darcy effects, a review of For two phase non-Darcy effects, a review of the literature suggests the following the the literature suggests the following the relationship:relationship:

2...

vK

v

L

P

g

2

1

11n

pn

pr

pSK

Fracture Technologies

Example-1 20/40 Proppant, at 4 Lb/ft2

(Top structure Map)

Example-1 20/40 Proppant, at 4 Lb/ft2

(Top structure Map)

Fracture Technologies

Fracture Profiles input20/40 Proppant, Conc=4 Lb/ft2

Fracture Profiles input20/40 Proppant, Conc=4 Lb/ft2

Fracture Technologies

WellWhiz Output (20/40)WellWhiz Output (20/40)

Fracture Technologies

Multi-Frac Horizontal Well(Oil and Gas)

Multi-Frac Horizontal Well(Oil and Gas)

Fracture Technologies

Proppant: 16/20, 3 Lb/ft2 (Alpha=48,800, n1=0.50, n2=5.5)

Proppant: 16/20, 3 Lb/ft2 (Alpha=48,800, n1=0.50, n2=5.5)

Fracture Technologies

Example-3Single(?) Phase Gas 12/18 at 2 Lb/ft2

Example-3Single(?) Phase Gas 12/18 at 2 Lb/ft2

Fracture Technologies

Net Pressure MatchNet Pressure Match

LOZ-1

Ne

t P

ress

ure

(p

si)

20

04

00

60

08

00

10

00

12

00

14

00

16

00

18

00

Time (min)5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0

Frac 1

Fracture Technologies

Frac GeometryFrac Geometry

Fracture Technologies

Proppant concentrationProppant concentration

Conductivity Profile

Lb

/Sq

-Ft

0.6

0.9

1.2

1.5

1.8

2.1

2.4

2.7

Fracture Penetration (ft)100 200 300

At Shut-in

At Closure

Frac 1

Fracture Technologies

WellWhiz Match12/18 Proppant (2 Lb/ft2)

WellWhiz Match12/18 Proppant (2 Lb/ft2)

Fracture TechnologiesSummary of Field BetaSummary of Field Beta

ProppSize

ProppConc(Lb/ft2)

Perm

(D)

Beta(S.Ph)(1/ft)

n1 n2

20/40 4.0 150 50,000 ---- -----

16/20 3.0 270 30,200 0.50 5.50

12/18 2.0 400 5,000 ----- -----

Fracture Technologies

Next Years ProgJuly 2003-June 2004

Next Years ProgJuly 2003-June 2004

Module Description

Number ofParticipants

Required PerProject

Module-1Fitting equations into lab data and

importing into WellWhiz3

Module-2History matching well tests with

simulation to match Beta from thefield*

5

Module-3 Complete 3D Editor 10

Fracture Technologies

WellWhiz Development

57 New Features

WellWhiz Development

57 New Features

1. Pressure output and PI calculations.(28-Jun-2002)2. New xxxx_ww.log log file3. Improve inline gridding (see model Grid too coarse)(1-Jul-2002)4. Better fracture root ball radius (1-Jul-2002)5. Can choose times to store grid results (2-Jul-2002)6. Better gridding between inline fractures (2-Jul-2002)7. Much smaller .out files (2-Jul-2002)8. Well numbers in IMEX file reduces number of diagnostics (2-Jul-2002)9. Fracture plot in Excel(17-July-2002)10. Fracture Orientation at exactly 90 deg cause mis-gridding (8-Jul-2002)11. Stopping and re starting WellWhiz/IMEX (9-Jul-2002)12. Editing tables with just one click. Also UnitTextFieldLabel (18-Jul-2002)(11-Jul-2002)13. All but one dialog converted to UnitTextFieldLabel components(18-Jul-2002)14. HCPV at graphics times in .out file(18-Jul-2002)15. Plotting the pressure (X,Y) along the fracture(18-Jul-2002).16. Mutiple permeability fractures, ideally User to edit and assign in 3D(9-Aug-2002)17. Relative file names in restart files(9-Aug-2002)18. Tubing hydraulics window allows switching with a warning (9-Aug-2002)19. Delete fracture profile button on profile dialog (9-Aug-2002)20. Diagnostic when beta!=0 except in fracture and setting DFactor=0 (14-Aug-2002)21. Console allows interruption without losing WellWhiz.(15-Aug-2002)22. Multiple completions in an inline fracture.(15-Sep-2002)23. Swinit array.(15-Sep-2002)24. Click on header in table cancels editing.(Jan-2003)25. Advanced perfs working (8-Jan-2003)26. Tool tips and 3 line headers. (15-Jan-2003)27. Merged Perforation and advanced windows. (15-Jan-2003)28. Square gridding option. Growth of gridding to edge(20-Jan-2003)29. Plot slice. (15-Jan-2003)30. Add small length quantity(8-Jan-2003)31. Picking position discrepancy fixed (1-Feb-2003)32. Well block put equal to corrected perf perm(18-Feb-2003)33. Advanced perf subdivide the subdive perf and casing blocks(18-Feb-2003)34. In EOG/Sami2i.wwb look at the WHP and injection with production(18-Feb-2003)35. Wellbore input should be multi-line for flow property ranges(20-Feb-2003)36. Open hole gravel pack(5-Mar-2003)37. Initial definition of advanced well should be OK (doesntwork15\Jack3) (12-Mar-2003)38. Delete surplus tables when you delete a fracture (12-Mar-2003)39. Retrograde condensate (21-Mar-2003)40. Zero all D-Factors does not work if you have defined a perf D-Factor doesntwork14\Run-L5 problem (3-Apr-2003)41. Assigned D-Factors work OK with beta(3-Apr-2003)42. Small grid at end of perf near edge bug corrected(3-Apr-2003)43. Surplus region numbers should be removed when you delete a fracture(6-Apr-2003)44. Fix block redraw on digitizing boundary. Double bufferring introduced (14-Apr-2003)45. Wiggly wells work for constant azimuth (17-Apr-2003)46. Scrollbars in 2D window. Appropriate cursors. Dragged image. (13-May-2003)47. Deleting all fractures resets the grid parameters(15-May-2003)48. Aligns fractures with perfs. (16-May-2003)49. Console window can stop program now. To-front button for main window.(16-May-2003)50. Drawing suspended less frequently. Debug18 monitors re-drawing.(16-May-2003)51. Optional frame. Entire window can be used for drawing.(16-May-2003)52. Force fracture to be in-line (done 16-May-2003)53. C:\WWExamples\data\doesntwork9\Base2 problems deviation, azimuth, frac wing left/right confusion, frac-ends not

gridding (16-May-2003)54. Trend table corrects illegal bottoms(16-May-2003)55. Improvement of some grid creation diagnostics for above wiggly wells(16-May-2003)56. Modifications for 2003.10 release of WellWhiz (28-May-2003)57. Import and Export of well flows from external source.(6-Jun-2003)