11/16/2016

High resolution modeling of

advanced well completion

technology

Marcin Bartnik

11/16/2016

Part A. Case Study # 1 – modeling fishbone completions

Part B. Case Study # 2 – integrated uncertainty study

11/16/2016

Case Study # 1 –modeling advanced

well completions

• The discovery is a upthrown, salt-cored structural closure

• The reservoirs are the Middle Jurassic (Hugin and Sleipner Fm) and Triassic (Skagerrak Fm)

• Hugin shoreface facies only deposited on crest of structure

• Sleipner and Skagerrak heterogeneous with mainly fluvial environments

• The Sleipner coal acts as a barrier between Hugin and the underlying Sleipner/Skagerrak Fm

• Uncertainty on OWCs – probably different in East and West

Reservoir description

11/16/2016 4

Case Study # 1 –modeling advanced

well completions

The reservoir is complex in terms of disconnected fluvial channels, surrounded by

a large majority of shale.

The company was evaluating completion technology for horizontal wells as a

possible development strategy.

11/16/2016 5

Fishbones

Maximize productivity through long horizontal

producers (~1200 m)

11/16/2016

Case Study # 1 –modeling advanced well

completions

137 fishbone completions

(modeled as 10 m long laterals spaced every 12 m, 2 inch diameter)

Full field model

Fishbone completions Local grid refinement

Refined 3 wells

11/16/2016

Case Study # 1 –modeling advanced

well completions

Fishbone completion is

implemented in Sleipner

fluvial facies.

It allows well to access

reservoir parts otherwise

sealed off by shale

layers.

Intersection along well in Sleipner fluvial reservoir

11/16/2016 8

Runtime benefits

INTERSECT

2.290.66 0.39 0.30 0.17

7.55

23.5

17.3

0

4

8

12

16

20

24

1 4 8 16 32

CP

U t

ime

, ho

urs

#cores parallel

CPU time vs. #cores

INTERSECT ECLIPSE

Challenging runtimes with ECLIPSE due to massive amalgamated LGRs

Very practical runtimes with INTERSECT, very fast and scalable

11/16/2016

Case Study # 1 –modeling advanced

well completions

Conclusions

Simulated incremental production from Sleipner fluvial reservoir of 17%

Similar result to Statoil's field test on Smørbukk South Extension (SPE-180390-

MS)

INTERSECT delivers value by runtime, scalability and integration with Petrel

Allows spending more time on the actual project rather than tuning a simulator