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8/11/2019 Satellite1

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MANAGED PRESSURE DRILLING MPD

UNDER BALANCED DRILLING UBD

EXTENDED REACH DRILLING ERD

DEEP WATER DRILLING

ReelwellDrillingMethod

HOLECLEANING

CONTROLLEDPRESSURE

DOWNHOLEISOLATION

HYDRAULICWOB

- drilling beyond boundaries


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LINER

DRILLING

HYDRAULIC

WOB

LOW COST

DRILLING FLUID

PRESSURELESS

CONNECTIONS

HOLE

CLEANING

CONTROLLED

PRESSURE

DOWNHOLE

ISOLATION

KEY FEATURES

Great benets

from RDM

APPLICATIONS

MANAGED PRESSURE DRILLING (MPD)

UNDER BALANCED DRILLING (UBD)

EXTENDED REACH DRILLING (ERD)

DEEP WATER DRILLING

Conventional

drilling

Drilling beyond boundariesReelwell AS challenges conventional drilling and introduces the REELWELL DRILLING METHOD(RDM).

The method implies accurate pressure management and improved well control through closed loop uid circulation,

especially attractive for Managed Pressure Drilling (MPD) and Under Balanced Drilling (UBD).

Through hydraulic Weight On Bit (WOB), RDM pushes limits for Extended Reach Drilling (ERD).

With all circulation being conned in the dual drill string, the method facilitates Deep Water Drilling.

The RDM increases hydrocarbon recovery while reducing environmental impact.

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CONVENTIONAL

DRILLING

FLUID TREATMENT

& CIRCULATION

SYSTEM

BOP

CASING

DRILL STRING

BOTTOM HOLE ASSEMBLY

REELWELL

DRILLING METHOD

TOP DRIVE

ADAPTER

DUAL DRILL STRING

CASING

BOP

RCD

DUAL FLOAT VALVE

PISTON

BOTTOM HOLE ASSEMBLY

FLUID TREATMENT

& CIRCULATION

SYSTEM

HYDRAULIC

SYSTEM

SYSTEMS OVERVIEW

The dual drill string, the top drive adapter, the dual oat valveand the piston are the key elements of the Reelwell drilling system.

The dual drill stringfacilitates closed loop circulation. Drill uid and cuttings are brought to surface through the center pipe, leaving the

wellbore annulus free of cuttings. This feature also allows for riserless drilling.

The top drive adapteris a dual conduit swivel for drilling uid.

The dual oat valveenables downhole isolation of the well. This facilitates controlled pressure drilling and pressureless pipe connections.

WOB is controlled through hydraulic pressure on top of the piston, pushing ERD limits.

The footprint from the the Reelwell Drilling Method is small. It is easily adaptable to all rig types with minimal modications and crew training.

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DOWNHOLEISOLATION

PRESSURECONTROL

LOW COSTDRILLING FLUID

Copyright

-drilling beyond boundaries

MANAGED PRESSURE DRILLING MPD

UNDER BALANCED DRILLING UBD

MPD and UBD are used for mature reservoirs where pressure is low due to depletion.

UBD implies that the well pressure is kept lower than the formation pressure avoiding the skin build-up.

The well is drilled with controlled inow.

MPD provides a well pressure equal to or slightly higher than the formation pressure. This is done by

applying a light drill uid and surface pressure control.

Reelwell Drilling Method pushing limits for

MPD &UBD


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Depth

Pressure

WELL

PRESSURE

CHOKE

PUMP

DUAL

FLOAT

VALVE

INNER DRILL STRING

DRILL STRING

P

Depth

Pressure

Depth

Pressure

3

Phone: + 47 51 87 49 10

[email protected]

Postal adress:

P.O. box 8034

4068 StavangerNORWAY

Visiting adress:

Prof. Olav Hanssens vei 7A


www.reelwell.com

Precise pressure control

Connection Start up Drilling

DESCRIPTION

The RDM offers signicant advantage to reservoirs with pressurechallenges.

Precise well pressure control facilitates operations in well withnarrow operating pressure window.

Improved ECD control prevents pressure variations duringpump start and stop.

Precise volume management improves gain and loss control .

Loss of annular uid is prevented by physical barrier, reducingformation damage.

The active mud volume is reduced to about 50%.Lower circulation rates reduce energy consumption.

Downhole isolation improves overall safety.

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SPECIFICATIONS

Main components (size/weight)

Dual Float Valve:

Top Drive Adapter:

Dual Drill String:

Piston:

UAC:

Well control unit:

Performance

Downhole pressure uctuation:


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HOLECLEANING

HYDRAULICWOB

LINERDRILLING

Copyright

- drilling beyond boundaries

EXTENDED REACH DRILLING ERD

ERD is an extreme type of directional drilling for long horizontal wells. The aims of ERD are: 1) to reach a

larger area from one surface drilling location, or 2) to keep a well for a longer distance in a reservoir in order

to maximise its productivity and drainage capability.

Todays challenges in ERD are in cleaning of the hole and managing the mechanical loads on the drill string

as well as managing the downhole pressure. At present maximum horizontal drilling reach is approximately

12 km.

Reelwell Drilling Method pushing limits for

ERD


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10 km

20 km

CONVENTIONALREACH

RDM more than doubles the reach, hencequadruples the potential drainage area

Phone: + 47 51 87 49 10

[email protected]

Postal adress:

P.O. box 8034


Visiting adress:



www.reelwell.com

The ultimate reach

Hydraulic WOB by piston

DESCRIPTION

The Reelwell Drilling Method pushes present limits in Extended ReachDrilling (ERD).

Hydraulic WOB enables unique horizontal traction of drill string. Wellhydraulic calculations conrms reach beyond 20 km.

RDM offers superior hole cleaning as the drill cuttings are removed from thewellbore just behind the drill bit and routed back to surface via the innerstring.

Installing a liner below the piston enables lining the well while drilling.Liner expansion is performed by increasing hydraulic pressure above pistonwith the ultimate potential of making monodiameter wells.

The method provides access to reserves otherwise inaccessible from platformor location. This makes building of new facilities redundant, and will beadvantageous considering environmental issues and economical aspects.

Superior hole cleaning Liner drilling and liner expander

SPECIFICATIONS

Main components (size/weight)

Dual Float Valve:

Top Drive Adapter:

Dual Drill String:

Piston:

UAC:

Well control unit:

Performance

Downhole pressure uctuation:


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Reelwell AS is located at Ipark (formerly Rogaland Science Park) in Stavanger. Ipark forms part of the knowledge

community situated in Ullandhaug campus. Important partners are the International Research Institute of Stavanger

(IRIS) and the University of Stavanger (UiS). The site also includes Ullrigg Drilling & Well Centre - testing facilities for

drilling technology and downhole equipment.

Phone: + 47 51 87 49 10

Fax: + 47 51 87 49 11

[email protected]

Postal adress:

P.O. box 8034

4068 Stavanger

NORWAY

Visiting adress:


4021 Stavanger

NORWAY

www.reelwell.com

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