ESS® Expandable Sand Screen Provides One-Trip Installation, Zero Sand-Control Failures in 54 Wells

Complete a shallow oil well that has sand-control issues and short pay zones.
Install a sand-screen system. Previous core-sample testing revealed that the field contained sand formations with high uniformity coefficients and fines percentages. These conditions made standalone screens unsuitable.

Weatherford recommended using the ESS expandable sand-screen system, which expands compliantly against the open hole. The system helps to prevent annular fines dispersal and migration and costs less per foot (meter) than conventional gravel-pack systems.
In a single trip, the Weatherford team deployed the ESS system to setting depth, set an EXR hanger, and expanded the screen.

The ESS system was deployed, set, and expanded in approximately 10 hours, which is significantly less than the average installation time for a conventional gravel pack. By reducing operational time, the ESS system lowered personnel and rental-equipment costs.
The sand screen in the ESS system expanded compliantly to the wellbore without the need for pressure pumping services, which reduced exposure to health, safety, and environmental (HSE) risks.
From the end of 2002 through early 2016, Weatherford installed ESS systems in 54 of the client’s shallow-water oil wells. Since those wells came online, none have had recordable sand-control failures.

Details

Location

Sarawak, Malaysia

Well Type

Oil, directional, offshore

Hole Size

6 to 6.125 in.

Case Diameter and Weight

7 in., 23 lb/ft (31 N·m)

Water Depth

114 ft (35 m)

Pay-zone Lengths

18 to 263 ft (5 to 80 m)

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ESS^® Expandable Sand Screen