| 摘要 |
<p>A multi-functional apparatus and method for drilling and cementing operations to set casing (32) in a wellbore for use on either top drive (3) or rotary rigs. It includes a fill-up and circulating tool (46), a cementing head assembly (47), and a wiper plug assembly (57). The tool (46) comprises a mandrel (19) with a packer cup (29) fixedly attached to a sliding sleeve (26) disposed about the outside diameter of the mandrel (19). To fill the casing, the assembly is lowered such that a portion of the tool is inserted into the casing, the pumps (8) are then actuated. To circulate fluid, the tool is lowered further such that the packer cup sealingly engages the casing to allow fluid to flow through the casing, to the fluid pumps. To cement the casing, the cement pump and hose assembly is connected to the cementing head to allow cement to be pumped through the tool and into the casing string.</p> |
