wft089401

Well Screen Technologies

Providing the organizational capabilities, well screen technology understanding, system reliability and installation experience to effectively address your sand control challenges.

Solving your sand control challenges.

2 © 2008 Weatherford. All rights reserved.© 2008 Weatherford. All rights reserved.

Sand control.

We talk the same language.

Our focus is on understanding the reservoir and finding the optimal balance between sand control investment

and return—for every well.

And we walk the same path.

We do it with engineering, technology, manufacturing, service and innovation. Industry leading, world class—and all of it dedicated to one objective:


2

3© 2008 Weatherford. All rights reserved.

The process for success.

Sand control success depends on a complex well-screen selection process that starts with reservoir evaluation and encompasses a diversified set of disciplines from screen design and manufacturing to installation.

The objective is a multifaceted balancing act with overlapping interests aimed at achieving:

Weatherford integrates this complex process to provide the industry’s most comprehensive resource for sand control solutions. We balance the equation.

High productivity

Application versatility

Effective isolation

Optimal drainage

Integrated function

4 © 2008 Weatherford. All rights reserved.

Reservoir first.

We begin with the reservoir so that our sand control systems are matched very specifically to the task. Weatherford’s expertise in geosciences and reservoir and petroleum engineering ensures the challenge is well understood before a solution is recommended.

We match these factors to an extensive range of conventional and expandable technologies and select the best approach. More options—many of them unique—mean greater design versatility. Options also define our scope of experience in the technologies’ relative merits and how best to apply them.

Quality, reliability and efficiency are built in through a global network of Weatherford manufacturing and service facilities while, at the well site, installation success comes from the knowledge and experience that only an industry leader can provide.

Our track record is second to none, and our expertise and depth of knowledge are unmatched. The result is the best, most reliable sand control technologies for every completion application, every time.


Sand retention:

Select weave size by performing actual retention-testing or comparing sand-size data to data fromthe retention-testing database.

Mud system: Perform flow-through and filter-cake flowbacktesting during planning phase. Conduct quality checks at rig site

Geomechanics: Assess borehole stability (sands/shales/fractures/depletion, etc.).

Hole geometry: Assess trajectories, build angles and dogleg severities, and review string design using torque and drag to ensure deployability.

Boreholecondition:

Ensure good drilling practices are used,considering hole gauge, washouts, shale instability and effective mud filter cake.

Functionaldesign:

Assess functional design requirements (reservoir and zonal isolation/inflow control/intelligent well integration/fluid-loss control, etc.).

Metallurgyselection:

Design for the chemical environment (corrosion/acid stimulation/scale treatments, etc.).

Erosion: Evaluate the level of erosion risk, considering such parameters as velocity, particle size and type, etc.

Installationefficiency:

Ensure a “right-first-time” installation with robust procedures, including HAZID, HAZOP, CWOP, etc.

Well cleanup/startup:

Define the appropriate procedures and parameters (staged flow rates, for example) for well cleanup and startup.

Key Criteria for Sand Control Success

Weatherford has assembled a highly talented team of completion specialists whose depth of expertise and knowledge enable us to address the key criteria toward achieving effective sand control and ultimate recovery.

We have conducted lab tests determining the sand retention capabilities of various weaves with a variety of reservoir sands for many years. Results show a good correlation between the largest particles in a distribution and the retention performance of the weave.


Sandface completion technology.

Matching sand control systems to both the reservoir and well economics requires a diversified set of tools. Our core offering ensures the right solution through an overlapping spectrum of sand control capabilities consisting of expandable and conventional sand screens, reservoir isolation technologies, inflow control devices and multifunctional screens.

ESS® expandable sand screens.

For improved well productivity at a significantly lower cost than gravel packing, our ESS systems are very effective and highly reliable. Proven in more than 600 applications and almost 400,000 ft (121,920 m) of installations, these modular expandable systems compliantly expand to support the wellbore and control sand. They are a particular advantage in completing long, single intervals. And the ERC™ multizone expandable reservoir completion system integrates expandable screens, solid expandables and conventional unexpanded casing to achieve openhole productivity with cased-hole functionality.

Conventional screens.

As integral components of gravel packing and frac packing, or as stand-alone sand control solutions, our conventional screen systems offer a broad scope of premium, wire-wrap and pre-pack solutions. In tight-radius horizontal and multilateral wells, metal-mesh, damage-tolerant Excelflo® and Maxflo® screens provide rigorous options built to exacting specifications. When difficult conditions, such as highly deviated wellbores or long perforated intervals exist, making gravel placement difficult, Weatherford pre-pack screen solutions are designed fit-for-purpose. Micro-Pak® screens provide security against voids in the gravel pack, aid the placement of gravel into the formation, and increases erosion tolerance during the pumping process.

For industry-leading mechanical strength to meet today’s most demanding downhole environments, Weatherford’s wrapped-on pipe shrink-fit technology are synonymous with Ultra-Grip™ and Dura-Grip® screens—technology with reliability that comes from over a hundred years of design heritage.


Reservoir isolation.

Full and zonal isolation for conventional and expandable systems provide the flexibility to manage any wellbore. Our MetalSkin® EZI™ expandable zonal isolation systems compliantly expand solid tubulars for effective openhole isolation, irrespective of fluid conditions. Mechanical openhole packers, swellable packers and many other devices ensure isolation in a full range of sand-control applications.

Inflow control devices.

A uniform inflow profile must be achieved to maximize hydrocarbon recovery and promote optimal reservoir drainage. The FloReg™ inflow control device is designed to induce precise and quantifiable pressure drops between the formation and the production string. This capability ensures a uniform inflow profile along the wellbore, allowing the reservoir to drain more efficiently and maximizing production and recovery.

Multifunctional screens.

Successful gravel packing and frac packing are highly dependent on proper gravel placement and the absence of voids caused by annular bridging of the gravel. To ensure void-free packing, the industry has recognized the benefits of shunt screen systems. Long, highly deviated, highly permeable and variable-pressure zones in cased hole, open hole or openhole horizontals are candidates for shunt screen systems with Weatherford’s screens. Weatherford is the premiere manufacturer of these systems.

For reservoir monitoring with significant time and cost savings, our Intelligent Screens™ technology deploys with optical distributed temperature sensors for valuable real-time data acquisition. Combine our Intelligent Screens designs with shunt screen systems for optimal results and systems management.


Whatever the sand control challenge, in any geology or wellbore geometry, Weatherford provides the experience and technology to succeed.

Conventional ScreensProducts

Size (in.)

OD (in.)

Hole Size (in.)

Prem

ium

Excelflo® Screens

2-3/8 3.27

Application dependent

2-7/8 3.77

3-1/2 4.41

4 4.93

4-1/2 5.43

5 5.95

5-1/2 6.45

6-5/8 7.60

Maxflo® Screens

3-1/2 4.41

4 4.93

4-1/2 5.43

5 5.95

5-1/2 6.45

6-5/8 7.74

Pre-

Pack Micro-Pak®

Screens

2-3/8 3.23


2-7/8 3.73

3-1/2 4.35

4 4.85

4-1/2 5.35

5 5.85

5-1/2 6.35

6-5/8 7.48

Thru

-Tub

ing

Dura-Grip® TT Screens

1 1.67


1-1/4 2.01

1-1/2 2.25

2-1/16 2.41

Excel™ TT Screens

1 1.70

1-1/4 2.10

1-1/2 2.30

2-1/16 2.47

Micro-Pak TT Screens

1 2.02

1-1/4 2.36

1-1/2 2.60

2-1/16 2.76

Stratacoil™ TT Screens

1 1.66

1-1/4 2.06

1-1/2 2.20

2-1/16 2.50

ProductsSize (in.)

OD (in.)

Hole Size (in.)

Wire

-Wra

p

Dura-Grip HD

Screens

3-1/2 4.17


4 4.67

4-1/2 5.17

5 5.67

5-1/2 6.17

6-5/8 7.30

7 7.67

Dura-Grip Screens

2-3/8 2.78

2-7/8 3.28

3-1/2 3.90

4 4.40

4-1/2 4.90

5 5.40

5-1/2 5.90

6-5/8 7.03

7 7.40

Super-Weld®

Screens

2-3/8 2.88

2-7/8 3.39

3-1/2 4.03

4 4.49

4-1/2 5.03

5 5.53

5-1/2 6.04

6-5/8 7.15

Superflo® Screens

2-3/8 3.22

2-7/8 3.73

3-1/2 4.35

4 4.85

4-1/2 5.36

5 5.86

5-1/2 6.36

6-5/8 7.50

Ultra-Grip™

Screens

3-1/2 4.07

4 4.57

4-1/2 5.07

5 5.57

5-1/2 6.07

6-5/8 7.19

7 7.57

Expandable Sand ControlProducts Size

(in.)OD (in.)

Hole Size (in.)

Scre

ens ESS®

Expandable Sand Screens

4 4.47 5-7/8, 6

4-1/2 5.07 6, 6-1/8, 6-1/2

5-1/2 6.108-1/2

7 7.56

Line

rs

ECL® Expandable Completion

Liners

4 4.10 5-7/8, 6

4-1/2 4.70 6, 6-1/8, 6-1/2

5-1/2 5.718-1/2

7 7.56

Reservoir IsolationProducts Size

(in.)OD (in.)

Hole Size (in.)

EZI™ Expandable Zonal Isolation System

7 8.00 8-1/2

Inflow Control DevicesProducts Size

(in.)OD (in.)

Hole Size (in.)

FloReg™ ICDs

2-3/8 3.30 3-7/8 (minimum)

4-1/2 5.40 6 (minimum)

5-1/2 6.50 7 (minimum)

6-5/8 7.70 8-1/4 (minimum

Specialty ScreensProducts Size

(in.)OD (in.)

Hole Size (in.)

Intelligent Screens™


Shunt Tube Application dependent

Product range.


Supply chain integrity.

We ensure the precision and quality of our products by controlling every step of their production. Since 2002 our 87 certified manufacturing facilities have doubled completions manufacturing through new facilities as well as expansion and investment in highly efficient machining equipment.

Major manufacturing facilities in Aberdeen, Angola, Dublin, Houston and Singapore yield economies of scale that bring real bottom-line value to our clients. These global facilities, working to ISO 9000 standards, provide the capacity and inventory to service wells in any country or offshore location. Strategically placed, they provide great logistical advantages for timely delivery.

Our new manufacturing facility in Cyprus, operational in Q4 2008, is an example of client-driven growth. It provides additional capacity for fast, efficient delivery.

Efficiency and precision are ensured though investment in advanced manufacturing capabilities. For example, our purpose-built expandable products facility in Aberdeen, Scotland, features the latest-technology robotic plasma welding machine and houses the world’s largest abrasive water-jet cutting facility. Custom-built, automated slotting, weave wrapping and laser welding machines are also used in the manufacture of ESS® systems to our exact specifications.


Service and training.

Through more than 800 service bases around the world, we make sure our products and expertise reach your well site on

schedule.

The skill level of our workforce ensures efficiency and safety for successful installations in every imaginable circumstance. Weatherford’s diversified product and service offering yields a highly cross-trained, dynamic workforce to provide superior technology understanding and service

quality. And our Operational Project Management System provides the structure for applying this experience with

efficiency and safety.

Weatherford’s experience is built on a heritage of many thousands of sand-control installations. This experience is cultivated through a network of training and technology facilities, including three of the largest in the world in Houston, Aberdeen and Hassi Messaoud.

Aberdeen training and technology center

11© 2008 Weatherford. All rights reserved. 11© 2008 Weatherford. All rights reserved.

Sand control solutions.

Turn to Weatherford for the optimal balance between sand control investment and return. Contact your authorized Weatherford representative, or visit weatherford.com.

515 Post Oak Blvd., Suite 600Houston, Texas 77027 USATel: 713-693-4000weatherford.com

Weatherford 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. 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.

© 2008 Weatherford. All rights reserved. 5309.00


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