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Heavy Lifting Engineering: Safe Coordination Strategies in Rig Move Operations
Rig move operations are considered among the most complex and critical phases in the oil and gas industry. They are not merely about dismantling and assembling equipment; they require precise engineering planning to manage massive weights and high-level coordination among work crews to ensure a smooth, safe transition without any time delays or material losses. At the heart of these operations, heavy lifting emerges as the fundamental backbone for a successful move. Field Operations: Challenges of Lifting Complex Rig Structures The Field Challenge: Tandem Lifting As shown in the field scene above, using multiple cranes to lift complex and tilted rig components demonstrates that relying on a single crane is often insufficient. In such scenarios, we resort to the Tandem Lifting technique. Load distribution among three or four cranes requires precise calculations for the Center of Gravity (COG). Any error in estimating the lifting angle or the wire rope pulling speed in one crane ...

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