Abstract: A float assembly facilitates autofill operations when running a tubing string into a wellbore. The assembly includes a poppet valve and an interlock. A primary biasing element, located on a support within the assembly, moves the poppet from an open position to a closed position against a seat. The interlock, situated relative to the poppet and support, includes a surface area exposed to fluid flow and includes a secondary biasing element. When fluid flow in the downbore direction exceeds a specific threshold, the interlock shifts from a locked state to an unlocked state. In the locked state, the interlock holds the poppet in the open position, allowing bi-directional fluid flow to support autofill operations. The secondary biasing element, located between the support and the assembly, maintains the locked state. When unlocked, the interlock releases the poppet, and the primary biasing element drives the poppet closed.

Abstract: A float assembly for a tubing string includes a sleeve, a poppet valve, and a shifting assembly. The sleeve can move from an open condition to a closed condition, controlling fluid flow through a bypass pathway via a bypass port in the sleeve. The valve (e.g., poppet valve) within the sleeve permits downbore fluid flow while preventing upbore fluid flow. Downstream, a shifting assembly in the sleeve allows upbore fluid flow when the shifting assembly is in a first condition. When in a second condition, the shifting assembly at least restricts downbore flow so the shifting assembly can shift the sleeve to close the bypass pathway once the fluid flow exceeds a first threshold. The shifting assembly can then be released to allow for unrestricted flow when a second threshold is exceeded.