| 摘要 |
Embodiments of the present invention include methods and apparatus for circulating fluid through casing and filling the casing with fluid using a combination fill-up and circulating tool while maintaining the fill-up/circulating tool in substantially the same position relative to the casing. In one embodiment, the fill- up/circulating tool includes a mandrel insertable into casing and having a sealing element therearound, the sealing element capable of sealingly engaging with an outer diameter of the mandrel to permit circulating fluid through the casing. The fill- up/circulating tool is also capable of allowing air flow around the outer diameter of the mandrel f or the operation of filling the casing with fluid without the need to move the mandrel within the casing.
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