ZoneSelect Fracturing Completions

Completion

Production

Intervention

Drilling

Evaluation

ZoneSelect™ Fracturing Completion System

Maximize production with a customized stimulation design, targeting each zone in multizone completions.

• Openhole completions• Multizone completion systems• Swellable packers

Openhole completions

Maximize production. Reduce operating costs. Save valuable time.

Weatherford’s ZoneSelect™ fracturing completion system is uniquely modular with an extensive toolbox that enables a customized completion design for each individual zone in your reservoir. This includes the optimal isolation method, frac sleeve, and/or composite plug for each zone to maximize total production.

Zone-specific designs are far more effective and efficient than general-purpose approaches that treat all zones alike.

The ZoneSelect system not only maximizes your production, it saves significant completion time and money with the ability to perform multiple stimulations in a single trip, with minimal or no thru-tubing intervention.

Combined with our total design and engineering capability, a custom-fit ZoneSelect system provides more for your money.

ZoneSelect frac system proven in tight-gas shale zones.

In the U.S. and Canada, the modular ZoneSelect

custom-fit completion system is meeting tough

shale-play challenges.

• Low permeability is mitigated by zone-specific fracturing stimulation designs

• Zonal isolation difficulties are overcome by

zone-specific life-of-well isolation methods

• Economic viability is enhanced by higher production and the time and cost savings

of single-trip multizone completions

The ZoneSelect system has a proven record of

reducing nonproductive time with proven reliability

and safety in demanding service conditions.

© 2011 Weatherford. All rights reserved.2

Industry’s most complete portfolio of products Weatherford can customize ZoneSelect systems to suit your well requirements using our unrivaled portfolio of sleeve, packer and accessory tool options. We help you choose the optimal technology for opening, isolating and fracturing each specific zone based on its length, geologic conditions, configuration and other unique characteristics.

Zonal Isolation

Swellable Packers Openhole Packers Composite Plugs

Fraxsis® swellable packer: A shorter element allows higher differential pressures and enables easier run-in-hole

ARES hydraulic openhole packer: Deployment interlock feature increases run-in clearance and reduces operational risk

CERES hydraulic openhole packer: Similar to the ARES with higher differential pressures

ComboFrac openhole packer: Combines the instant pack-off capabilities of mechanical element with the pressure support of a swellable element

FracGuard® composite plug: Runs on wireline and greatly accelerates operations

A pumpdown version is available for long horizontals

GENISIS® swellable packer: Easy deployment for reduced costs

UltraPak™ systems

WFX-Style BlackCat packer

PHS premium hydraulic-set liner hangersNTD liner-top packerWTSP5 liner-top packer

Liner-Top Isolation

Ball drop Mechanically shifted Pressure activated

MASS sleeve: Treats in excess of 50 zones in a single job

Monobore sleeve: Selective open and close capability

Toe sleeve: Located at the bottom of multizone completions

SingleShot sleeve: Uses a continuous method of isolating below the sleeve

MultiShift sleeve: After opening with a ball; it can be opened/closed with a shifting tool

Fracturing Sleeves


© 2011 Weatherford. All rights reserved. 3

Total design and engineering capability

Weatherford is a premium completions provider and one of the world’s leading oilfield services companies. We can design and engineer total completion systems and meet all of your project requirements from detailed pre-job planning to field installation.

The modularity of ZoneSelect™ systems coupled with the industry’s largest and most complete portfolio of products allows us to configure the ideal system, zone by zone, for your well. Comprehensive design and engineering services include the following:

• Providing the optimal isolation method for each zone, with more options and customizations than anyone else.

• Specifying the optimal fracturing sleeves from the widest range of sleeves available today. Factory-set shear ring values ensure sleeves open at specified pressures and eliminates changing shear values in the field, which can adversely affect zonal stimulation.

• Computational fluid dynamics (CFD) modeling determines pressure drops through the sleeve and maximizes frac gradients without premature opening of the sleeve.

• Designing the most efficient method to deploy and hang the completion with torque-and-drag calculations to help run the system trouble-free to bottom.

• A detailed job planning schedule will be implemented from start to finish of the installation.

Weatherford’s ZoneSelect system engineering capability has been proven with installations in fracture-stimulation completions worldwide.


Fracturing Sleeves Weatherford offers field-proven fracturing sleeves for diverting the frac treatment, as well as zonal isolation. These frac systems are highly efficient and substantially reduce the operational time normally required to stimulate multiple zones.

ZoneSelect MASS frac sliding sleeve treats in excess of 50 zones in a single job. The breakthrough MASS (multi-array stimulation system) can fracture up to ten zones, with five sleeves per zone in a single trip. The benefits are many:

• Save time and money by fracturing multiple zones in a single trip without thru-tubing intervention

• Cut costs and increase production with a greater reservoir drainage length using fewer isolation packers

• Reduce risk by dropping fewer balls in multistage fracs

• Increase production by maximizing flow area with arrayed sleeves

• Guard against sleeve erosion by eliminating fracturing through inner sleeve

• Enhance performance with more uniform frac pressure across intervals provided by port diffusers in sleeves

MASS sleeves can be cemented in place or used with packers for isolation. In the Bakken and Eagle Ford shale plays of the U.S., high temperatures and porous conditions require sleeves to be cemented in place.

ZoneSelect SingleShot and ZoneSelect MultiShift frac sliding sleeves use a continuous method of isolating below the sleeve, opening a port, fracturing, then moving to the next zone. Many benefits similar to the MASS sleeve include the fracture of multiple zones in a single trip without thru-tubing intervention.

The MultiShift sleeve is ideal in operations where it is necessary to re-enter the well for additional fracturing or zonal isolation. After initially being opened with a ball, the balls and ball seats are milled out. The sleeve can now be closed or opened with a shifting tool.

Real Results

ZoneSelect Monobore Frac Sleeves Save Operator 10 to 12 Days of Installation Time Over Previous Operations

Location: Northern Germany Well type: Unconventional horizontal shale/gas Well depth: 17,000 ft (5,182 m)

Objectives• Produce multizone well with ability to isolate

and later close zones that were producing water.

• Have cost-effective system compatible with coiled tubing and able to work with a larger pipe ID.

Results•ZoneSelect monobore sleeves were chosen

for their ability to be opened and closed with a shifting tool for the life of the well.

• Seven sleeves were installed in a single trip with coiled tubing in just 6 days, compared to 16 to 18 days using a standard operation.

Value to Client• All objectives were met, providing significant

time and costs savings.

Tactical Technology™ in Action:

ZoneSelect monobore frac sliding sleeve is typically used during cement isolation. Weatherford shifting tools selectively open and then close the sleeve after fracturing the zone. The process is repeated until all zones are completed. This sleeve stimulates many more zones than a ball-seat system and reduces operating time in multizone completions.

ZoneSelect toe sleeve is located at the bottom of ZoneSelect completions. The sleeve is sheared open when tubing pressure is applied and exposes the frac ports.

© 2011 Weatherford. All rights reserved.


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Fraxsis® annulus swellable packer. High-performance frac isolation for ZoneSelect completions. Many features and benefits include the following:

• Bonded, swellable elastomers activated through natural wellbore fluids to provide resealing capability for the life of the well.

• Short, slim design reduces chances of becoming stuck while providing a higher pressure differential to enhance performance.

• Shorter element design expedites fracturing to save valuable time.

• Innovative element backup system enables higher pressure differentials.

• Water-swell, oil-swell, or exclusive hybrid elastomer available.

Fraxsis packers are available for a wide variety of hole sizes and can be custom-designed to suit your particular application.

GENISIS® annulus swellable packer provides a one-trip, self-setting isolation system designed to activate and seal through the natural contact of in-situ wellbore fluids for life-of-well reseal capability. Other benefits include no moving parts to facilitate deployment and reduce well construction costs while providing the versatility to integrate with most well-tubular configurations and thread connections.

Zonal Isolation Zonal isolation during fracture-stimulation completions is the key to ensuring fracturing fluid gets to the target and protects the areas around it. The ZoneSelect™ fracturing completion system offers multiple isolation options—from mechanical and swellable packers to composite plugs and cement—to ensure the most effective solution for any hole-gauge condition.


ARES hydraulic openhole packer is a two-stage mechanical-sealing model design for multizonal isolation. A separate deployment interlock feature provides increased run-in clearance and reduced operational risk in tight-hole and high-dogleg intervals. The extra-long packing element increases sealing capability yet requires lower packoff force to reduce stress on the formation.

CERES hydraulic openhole packer is a high differential pressure mechanical-sealing model design for multizonal isolation. A separate deployment interlock feature provides increased run-in clearance and reduced operational risk in tight-hole and high-dogleg intervals. The extra-long packing element increases sealing capability yet requires lower packoff force to reduce stress on the formation.

ComboFrac™ openhole packer combines the instant pack-off capabilities of a mechanical element with the pressure support of a long-length swellable element—this saves rig time by allowing earlier application of pressure across the packer with an effective seal over irregular openhole sections.

FracGuard® composite plug is run on wireline into highly deviated or horizontal wells where e-coil or standard coiled tubing would typically be used. This greatly accelerates operations, reduces rig time and eliminates the need for expensive wireline tractors. Jet ports wash away debris ahead of the plug and so you can run past sand bridges and debris in horizontal sections. Perforating guns conveyed above the plug make single-trip plugging and perforating possible.

Real Results

Fraxsis® Annulus-Swellable Packers Isolate 28 Zones in Single Trip for Fracturing Operations in Challenging Bakken Shale Play

Location: North Dakota, USA Hole Size: 6 in.Casing: 4 1/2-in., 11.6-lb/ft, L80 LTC

Objectives• Increase number of stimulation points and

packers for better reservoir drainage in a 10,000 ft (3,048 m) true vertical depth (TVD) ×19,000 ft (5,791 m) measured depth (MD) well

• Install liner assembly for future plug-and-perf frac operations.

Results• 27 Fraxsis annulus swellable packers were

deployed in 4 1/2-in. × 5 3/4-in. element OD configuration on 11.6-lb/ft, L80 casing mandrels.

Value to Client• The compact design and 5,000 psi

(34.47 MPa) rating of Fraxsis packers enabled the operator to successfully isolate 28 zones to 19,248 ft (5,867 m) MD and the well was completed in a single trip through a tight horizontal section with no lost time.




Liner-Top IsolationMultizone openhole completions require tieback to the casing to provide well integrity. Weatherford’s high-pressure liner-top packers provide a reliable, high-integrity seal that isolates the annulus between the liner OD and the ID of the parent-casing. Our complete line of liner-top packers can support exceptional loads and provide simultaneous rotation, reciprocation and circulation capabilities.

Liner Hanger Portfolio

UltraPak ZS packer is specifically engineered for multizone openhole completions. It is ideally suited for wells completed in a single trip that will be fracture-stimulated after landing the completion. In addition, this hydraulically set packer is capable of handling large differential pressures. The UltraPak ZS includes an anti-preset device with components that are rotationally locked, enabling rotation into the horizontal sections, saving valuable rig time.

NTD liner-top packer is made up on a continuous casing mandrel without welded joints. The NTD packer’s large ID, dual-direction full-circle slips, low setting force and a proven element system enable it to be used in cemented and uncemented applications and set either mechanically or hydraulically. For applications that require using the client’s existing tubulars, the NTD liner-top packer is an excellent option.

WFX-Style BlackCat packer is a heavy-duty, retrievable sealbore packer with torque-through capabilities equal to or greater than common tubing connections. High-tensile-strength components allow long lengths of production liner to be installed and bi-directional slips located below the element prevent debris from interfering with retrieval. The WFX-Style BlackCat packer is ideal for applications where high torque may be required to get the completion to bottom, or where retrieval of the packer is contemplated.

Real Results

NTD Liner-Top Packer Enables Deployment of Multizone Frac Liner Assembly in Highly Deviated Canadian Well

Locations: Western CanadaWell type: Onshore horizontalCasing size: 7-in., 26-lb/ft, L80Liner size: 4 1/2-in., 13.5-lb/ft, P-110Well depth: 11,309 ft (3,447 m)

Objectives• Provide simultaneous rotation,

reciprocation and circulation to deploy a liner assembly into a problematic wellbore

• Reduce helical buckling and deformation of the liner string in a challenging, horizontal fracturing application.

Results• A customized Weatherford NTD liner-

top packer, multizone frac sleeves, and Fraxsis® annulus swellable packers were successfully deployed.

• The 4 1/2-in. liner assembly was pushed to the openhole interval beginning at 7,795 ft (2,376 m) MD and continuous assembly rotation was performed for the next 3,517 ft (1,072 m).

• At 11,309 ft (3,447 m) MD, a known trouble zone was encountered and the liner top was set at 7,372 ft (2,247 m) MD in a 72° inclination, just 328 ft (100 m) short of target depth.

Value to Client• A 12-interval horizontal frac system was

run successfully into the problematic wellbore, meeting all objectives.



Tubing Size

Liner Hangers (in.) 3-1/2 4-1/2 5-1/2

UltraPak™ ZS ü

UltraPak U ü ü ü

UltraPak HU ü ü ü

NTD liner-top packer ü ü

WFX-Style BlackCat packer ü ü ü

Tubing Size

Packers (in.) 3-1/2 4-1/2 5-1/2

Genisis® packer ü ü ü

Fraxsis® packer ü ü

ARES packer ü ü

Ceres packer ü ü

ComboFrac™ packer ü

BullDog™ HD packer ü ü ü

Tubing Size

Sleeves (in.) 3-1/2 4-1/2 5-1/2

Monobore ü ü ü

SingleShot ü 14 zones ü 20 zones ü 21 zones

MultiShift ü 13 zones ü 19 zones ü 21 zones

MASS* ü 10 zones ü 10 zones

Toe ü 1 zone ü 1 zone ü 1 zone

* Up to 5 sleeves per zone



Just a few of our configuration possibilities

Plug-and-perf + SingleShot + swellable packers extend intervention depth

Plug-and-perf method, using swellable packers —in lieu of cement—for isolation

You can improve zonal isolation integrity with a ZoneSelect™ system featuring our unique Fraxsis® swellable packer and FracGuard® composite plug. Other advantages and benefits include the following:

• Number of intervals treated is limited only by the capability of intervention methods to reach selected zones.

• Reliable, easy-to-install swellable packers eliminate the time and cost of cementing operations.

• System proven with over 125,000 composite bridge plugs installed.

Extend intervention depth and intervals using our ZoneSelect SingleShot and ZoneSelect MultiShift fracturing sleeves for selective stimulation along with our swellable packers for isolation in any wellbore fluid. The benefits include the following:

• Increased number of intervals using frac balls and sleeves at bottom intervals.

• Eliminates intervention needed on the lower section of the well for stimulation.

• Reduced trip time and cost with bridge plugs needed only at the heel section of liner.


ZoneSelect selectability for optimal stimulation and life-of-well recovery

High-integrity isolation for stimulation of high-pressure wells

Our ComboFrac™ swellable packer, ZoneSelect SingleShot sleeve, ZoneSelect MASS sleeve and engineered composite balls can combine to provide reliable isolation with the maximum flow area in a high-pressure environment. Other benefits include the following:

• High-pressure openhole packer provides 10,000 psi (69MPa) differential.

• Instantaneous isolation.

• Toe sleeve provides initial frac port.

A ZoneSelect system with an ARES hydraulic packer and monobore sliding sleeve can isolate any unwanted zone in your completion string throughout the life of the well. Other benefits include the following:

• Instantaneous zonal isolation.

• Monobore sleeves that can be opened and closed in any combination.



weatherford.comWeatherford products and services are subject to the Company’s standard terms and conditions, available on request or at weatherford.com. For more information contact an authorized Weatherford representative. Unless noted otherwise, trademarks and service marks herein are the property of Weatherford and may be registered in the United States and/or other countries. Weatherford products named herein may be protected by one or more U.S. and/or foreign patents. For more information, contact [email protected]. Specifications are subject to change without notice. Weatherford sells its products and services in accordance with the terms and conditions set forth in the applicable contract between Weatherford and the client.

© 2011 Weatherford. All rights reserved. 7925.01

Proven reliability, safety and performance ZoneSelect completion technology provides enhanced productivity and cost savings for our clients while reducing NPT and wellbore damage. Custom-fit systems have been deployed in U.S., Canadian, Russian, Chinese and eastern European land operations as well as offshore operations in Norway and Romania.

Worldwide, zones in horizontal and deviated wellbores have been completed with ZoneSelect systems in unconventional shale, tight-gas and oil-sandstone formations.

Discover all the advantages of the ZoneSelect system and how Tactical Technology™ can save you substantial completion time and costs. Contact a Weatherford representative or visit weatherford.com/zoneselect.


ZoneSelect Fracturing Completions

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