초록 ▼

A service tool for use in completion operations includes a fluid control apparatus therein. The apparatus permits variable regulation of fluid flow downhole, selective opening and closing of multiple fluid ports in the apparatus, protection against overpressurization and communication with the earth

A service tool for use in completion operations includes a fluid control apparatus therein. The apparatus permits variable regulation of fluid flow downhole, selective opening and closing of multiple fluid ports in the apparatus, protection against overpressurization and communication with the earth's surface. Each of these functions is accomplished by displacing a member of the apparatus with an electromechanical device. In particular, data transmission is performed by displacing the member relative to a fluid port to thereby produce pressure pulses in a fluid flowing therethrough.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for use with an item of equipment operatively positionable within a subterranean well, the item of equipment including a slurry delivery flow passage and an internal fluid return flow passage for returning a fluid portion of a slurry to the earth's surface, the

[ What is claimed is:] [1.] Apparatus for use with an item of equipment operatively positionable within a subterranean well, the item of equipment including a slurry delivery flow passage and an internal fluid return flow passage for returning a fluid portion of a slurry to the earth's surface, the apparatus comprising:a primary fluid port interconnectable in series with the fluid return flow passage, the slurry fluid portion flowing through the primary fluid port when the fluid portion is returned to the earth's surface; anda restrictor disposed adjacent the primary fluid port, the restrictor being selectively displaceable relative to the primary fluid port to thereby variably restrict flow of the slurry fluid portion through the primary fluid port.