Day 4 3 multiple fractures design and control

Horizontal Hole S−mula−on Source: Energy & Environmental Research Center EERC... 10 Source: Americas Petrogas... 11 Source: Americas Petrogas... The minimum number of perforations to b

1

Multiple fractures

Horizontal Hole  S−mula−on 

Source: Energy & Environmental Research Center (EERC)

3

vertical

!  Cemented liner

!  Plug and Perf Method

!  Open Hole Completions

!  Uncemented perforated liners

!  Swell packers

!  Frac Sleeves

!  SLB Falcon System

!  BHI Frac-Point system

!  Halliburton RapidFrac system

!  Multilateral Technology

!  BHI Frac-Hook

7

!  Plug and Perf Method

!  Open Hole Completions

!  Uncemented perforated liners

!  Swell packers

!  Frac Sleeves

!  SLB Falcon System

!  BHI Frac-Point system

!  Halliburton RapidFrac system

!  Multilateral Technology

!  BHI Frac-Hook

8

9

Source: Energy & Environmental Research Center (EERC)

10

Source: Americas Petrogas

11

Source: Americas Petrogas

horizontal wells 

!  Limit the perforation intervals for fracture initiation to

a maximum of 1 m to reduce the risk of near wellbore problems and multiple fractures

!  Best results are obtained by jetting the perforations

rather than shooting

!  The minimum number of perforations to be applied is

9, but a larger number is preferred, say, 12 to 15

!  Preferred phasing is 60o to minimize possible

tortuosity

"  Note that some jetting tools can only provide 120o 

13

Well orienta−on and perforated interval   affects  fracture growth 

Parasyte Frac

Parasyte Frac

Main Frac

!  Cemented liner

!  Plug and Perf Method

!  Uncemented perforated liners

!  Swell packers

!  Frac Sleeves

!  SLB Falcon System

!  BHI Frac-Point system

!  Halliburton RapidFrac system

!  Multilateral Technology

!  BHI Frac-Hook

14

15

Source: Energy & Environmental Research Center (EERC)

Source: Energy & Environmental Research Center (EERC)

Source: Energy & Environmental Research Center (EERC)

18

19

Plug and Perf requires

over-displacing before

pumping down plug to

isolate next zone

In isolation systems pumping balls can lead to overdisplacement if spacing between sleeves is too small for accurate ball placement

21

Massive mul− fracs in Shalegas 

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