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Saudi ArabiaFocus - CHWell Access

Petromac Rocker deploys Ultrasonic Cement Imaging Tool through previously inaccessible completions in Saudi Arabia

World’s first Rocker Centralizer revolutionizes USIT / IBC cement integrity data acquisition

Saudi Aramco regularly completes wells with 4.5” liners in which minimum restrictions can be as small as 3.4”. Standard cement evaluation tools, such as the Ultrasonic Imaging Tool, USIT, require precise centralization; in order achieve this, the mechanics of the existing centralizer do not allow it to pass through these small restrictions.

Due to this, Petromac was entrusted with engineering a centralizer solution for the USIT. Petromac designed an ultra-low drag Rocker Centralizer, that can be deployed on gravity to 80° deviation, go through restrictions as small as 3.4” while maintaining precise tool centralization.

Saudi Aramco deployed the Rocker Centralizer system in Q2-2023. The tool navigated the liner restrictions and delivered near perfect centralization, enabling Aramco to gather critical well integrity data prior to well testing.

Fig 1: Rocker centralizer designed to go through restrictions as small as 3.4”
Fig. 1Rocker centralizer designed to go through restrictions as small as 3.4”
Fig 2: Rocker arm design provides precise centralization even in horizontal wells
Fig. 2Rocker arm design provides precise centralization even in horizontal wells
Fig 4: USIT tool deployed using Rocker centralizers delivers near-perfect centralization in small bore completions
Fig. 4USIT tool deployed using Rocker centralizers delivers near-perfect centralization in small bore completions
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