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Methane hydrate formation using high gravity equipment: A new method for recovery of associated gas in offshore oilfields
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DOI：10.1016/j.gerr.2025.100151.png)
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Abstract
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For deep-sea oil exploitation far away from land, there is inevitably the generation of oilfield-associated gas. It is a new method for recover oilfield associated gas by using a high-gravity device to generate hydrate. In this paper, the methane hydrate formation process of different packings in the high-gravity machine was studied. By comparing the structural morphology of varying packings and the characteristics of the hydrate in the highgravity machine, a new type of layered packing is designed and manufactured. The volumetric storage capacity, normalized gas consumption rates and methane absorption time of foam metal packing, metal mesh packing, 3D printing spiral packing, and new layered packing were investigated experimentally. The results show that the new layered packing has significant advantages. The maximum volumetric storage capacity, normalized gas consumption rate, and the shortest methane absorption time are 239265 mol/(m3 & sdot;min), and 74 min, respectively. It exhibits an excellent methane hydrate formation effect and the advantage of small equipment size. It is very suitable for the recovery of oilfield-associated gas produced in the process of offshore oil exploitation.
Keywords:
Methane hydrate
High-gravity machine
Foam metal packing bed
Metal mesh packing bed
3D printing spiral packing bed
New layered packing bed
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