Proper centralizers can improve horizontal well cementing

Typical bow-type centralizer (Fig. 2). [10,146 bytes] Semirigid centralizer with flat, stiff bows designed for horizontal sections (Fig. 3). [11,273 bytes] Field technician installing aluminum, spiral rigid centralizers (Fig 4). [42,020 bytes] The bows on the downhole activated centralizers are locked down before running in the well (Fig. 5). [50,359 bytes] The selection and spacing of appropriate centralizers can improve the cementation of high-angle and horizontal wells.

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