CEMENTING

The Obex™ annular casing packer is a plug-operated and mechanically-set packer designed for casing-to-casing applications. The Obex annular casing packer can be used as a standalone packer, or coupled with an ES II™ HD stage cementer for multiple-stage cementing operations.

Obex annular casing packers are designed to be set inside cased holes to provide a high-pressure, gas-tight, casing-to-casing seal. This seal helps mitigate annular gas migration and/or supports the hydrostatic weight of annular well fluids above the Obex annular casing packer in wells with weak formation zones.

The Obex annular casing packer operates by setting the packer elements and high-strength barrel slips with a plug and applied internal casing pressure. Setting is made possible by seating the displacement-type stage plug into the operating seat of the packer and applying casing pressure. The packer set is initiated at 650 psi and continues up to 2200 psi where a 100,000 pound over-pull at surface confirms the packer is properly set. A locking mechanism keeps the packer compressed from the initiation of setting until it is fully set.

Application

The Obex annular casing packer is designed to be used in the following casing-to-casing applications:

• Help protect weak formations from damage due to hydrostatic pressure fluids. The packer is set at strategic intervals to shorten the fluid column and thus alleviate pressure.

• As a secondary barrier for compliance with regulatory authorities requiring multiple annular barriers as part of the overall wellbore architecture design.

• Can be used as a primary barrier for non-cemented applications

• Immediately below a multiple-stage cementing tool in the casing string to assist with multiple-stage cementing operations.

Features and Benefits

• Can be run as a standalone casing-to-casing, anti-gas-migration packer and drilled out at any time.

• Can be run in conjunction with an ES II HD stage cementer.

• Can be drilled out after the second stage of cement has set.

• Pipe manipulation can be used to confirm packer set.

• Extrusion resistant element design for life-of-the-well integrity.

• High strength barrel slips provide bidirectional anchoring up to 350,000 lbf.

• Plug operated and mechanically set via applied pressure.

• Robust setting mechanism designed for high-density, debris-laden fluids.

• Redundant HPHT seals prevent fluid communication between casing and annulus.

• Internal continuous latching mechanism locks packer in the set position.

• Operates with free-fall or displacement-type plug sets.

• Operating temperature of 300ºF (149ºC)

Obex™ Annular Casing Packer

The Obex™ annular casing packer can be used as a standalone packer (above) or coupled with an ES II™ HD stage cementer (below) for multiple-stage cementing operations.

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9 5/8-in. Obex™ Annular Casing Packer Specifications

Part No. 102439057

Casing Size 9-5/8-in.

Casing Weight Range 53.5 - 58.4 lbs/ft (79.6 kg/m)

Casing Grade* All API Grade C-95

Parent Casing Size 13-3/8-in.

Parent Casing Weight 86 lbs/ft

Connections* Tenaris 3SB

Complete Tool Length 108-in. (2.74 m)

Weight 1,200 lbs

Element Material HNBR (90 duro)

Max OD 11.85-in. (300.99 mm)

Packer Element Length 11.3-in. (287 mm)

Max Packer Element OD 11.62-in. (295.15 mm)

Drillout ID 8.425-in. (214 mm)

Temperature 300ºF (149ºC)

Setting Pressure 2,200 psi (15 MPa)

Opening Pressure** 3,000 psi (21 MPa)

Closing Pressure** 1,000 psi (7 MPa)

Burst Pressure 11,473 psi (79 MPa)

Collapse Pressure 10,237 psi (71 MPa)

Tensile Strength 1,213,000 lbs (550213 Kg)

Max. Differential Pressure from Above 10,000 psia (69 MPa)

Max. Differential Pressure from Below 10,000 psiab (69 MPa)

9 5/8-in. Obex™ Annular Casing Packer Dimensions

A - Inches (mm) 7.130 (181.10)

B - Inches (mm) 5.610 (142.49)

C - Inches (mm) 8.425 (141.49)

D - Inches (mm) 11.850 (300.99)

a) Tested to 11,500 psi in UCON oil at 350ºF (177ºC ) and 20.5 ppg WBM at 68ºF (20ºC).

b) Tested to 11,500 psi in Nitrogen at 300ºF (149ºC).

*Can be customized for any casing grade and/or connection.

**When run in conjunction with an ES II™ HD stage cementer.

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© 2015 Halliburton. All rights reserved. Sales of Halliburton products and services will be in accord solely with the terms and conditions contained in the contract between Halliburton and the customer that is applicable to the sale. H011883 09/15

For more information on the Obex™ Annular Casing Packer, please call you local Halliburton representation or email us at cementing@halliburton.com.

Obex™ annular casing packers are cased-hole annular barrier packers designed for sealing off the annulus as a secondary barrier other than cement. The tools can be used with or without multiple-stage cementing tools. These packers can serve as a secondary barrier to help reduce annular gas migration.

These packers help with low equivalent circulating density (ECD) conditions by preventing cement from falling down the backside during standard primary cementing operations and also help direct cement upward during the second stage of a multiple-stage cement job.