Millthru Level 4 Multilateral System

Multilaterals

MillThru Level 4 Multilateral System TM

Conventional liner hanger, liner, and cementing equipment

Weatherford's MillThru Level 4 multilateral system creates a Level 4 junction with full-liner access to both the lateral and main bores. Overlapping concentric strings, combined with cement, ensure a junction with maximal support. The system can be used in new or re-entry applications. This simple, low-cost, low-risk system relies on standard casing exit equipment for making a lateral window, using a simple mill assembly to create access back into the main bore through a standard liner. Simply install Weatherford's PakLatch™ permanent packer assembly, and latch a self-aligning QuickCut™ whipstock to the intended azimuth. Perform a routine casing exit, creating a lateral access window. Drill, case, and cement the lateral, using conventional methods. Run the MillThru assembly in the well, and mill an access window through the liner overlap at the junction, using proven milling techniques. An optional re-entry deflector, with flow-activated anchoring system, is available for selectively re-entering multiple laterals while being able to pass safely through multiple orientation packers.

Applications

Main-bore access window created with a MillThru system

PakLatch orientation packer for anchoring, milling, and re-entry

The MillThru system is effective in new and re-entry applications and is ideal for cost-sensitive operations requiring low-risk multilateral functionality.

Weatherford International Ltd. 515 Post Oak Blvd., Suite 600 Houston, Texas 77027 USA Tel: 713-693-4000 www.weatherford.com © 2005 Weatherford. All rights reserved.

3336.00

Multilaterals

TM

MillThru Level 4 Multilateral System Features, Advantages and Benefits — The standard casing exit system eliminates the need for special junction hardware, enabling creation of a low-cost Level 4 junction. — The MillThru system is installed with standard milling, drilling, and completion techniques. Simple, triedand-true equipment and procedures result in lower equipment costs and reduce the risk of delays and cost overruns. — The permanent PakLatch™ packer provides a permanent orientation anchor to simplify casing exit and re-entry. — The simple liner completion does not require orientation or depth correlation, thus eliminating risk associated with junction placement. — The optional re-entry deflector is self-orienting for selectively re-entering multiple laterals while being able to pass safely through multiple orientation packers. — The flow-activated re-entry anchor provides more options and flexibility with selective re-entry of multiple laterals.

Specifications System size (in.) Casing weight (lb/ft) Liner size (in.) Casing weight (lb/ft) Maximum OD, packer body (in./mm ) OD, packer gauge ring (in./mm )

9-5/8 40.0 to 53.5 7 20 to 29 8.25 209.6

Minimum ID, packer/O-riser (in./mm ) Maximum differential pressure, packer (PSI/bar ) Maximum temperature (°F/°C ) Snap-in force, packer milling latch (lb/daN ) Snap-out force, packer milling latch (lb/daN ) Minimum DLS of liner through the casing exit window (°/100 ft) Mainbore window, MillThru (in./mm) Material Maximum mill OD, MillThru (in./mm) Torque rating, packer/O-riser (ft-lb/N•m ) Torque rating, system (ft-lb/N•m )

Weatherford International Ltd. 515 Post Oak Blvd., Suite 600 Houston, Texas 77027 USA Tel: 713-693-4000 www.weatherford.com

6.00 152.4 5,000 344.7 275 135 > 5,000 >2,224 60,000 26,689 25 6.0 to 6.3 152.4 to 160.0 4140–80ksi 6.125 to 6.300 155.6 to 160.0 10,000 13,558

Weatherford products and services are subject to the Company’s standard terms and conditions, available on request or at www.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. © 2005 Weatherford. All rights reserved.

3336.00