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AssigneeExploration Logging, Inc.
InventorMartin J. Fennell
Estimating the term…
An arrangement for measuring the stretch of a wire line used in well drilling operations by first measuring the amount of stretch in the deadline by measuring rotation of the dead sheave which supports the deadline, and multiplying the length of the wire line by the ratio of the amount of elastic stretch in the deadline to the length of the deadline. Equipment depth in the well is determined by measuring the movement of the wire line and applying a correction for the wire line stretch. If desired, a correction can also be applied for any errors in the split block separation. The ratio of the amount of stretch in the deadline to the length of the deadline may be employed to provide measurement of the hookload on the traveling block.
Apparatus for measuring the stretch of a wire line used in well drilling operations having an upper block with a plurality of sheaves and a traveling block having a plurality of sheaves, a wire line extending between the sheaves of the upper block and the sheaves of the traveling block, with one end of the wire line forming a deadline which extends from a fixed anchor over a rotatable dead sheave of the upper block comprising:
Apparatus for measuring equipment depth in well drilling operations having an upper block with a plurality of sheaves and a traveling block having a plurality of sheaves, a wire line extending between the sheaves of the upper block and the sheaves of the traveling block, with one end of the wire line forming a deadline which extends from a fixed anchor over a dead sheave of the upper block comprising:
In a method of measuring the stretch of a wire line used in well drilling operations having an upper block with a plurality of sheaves and a traveling block having a plurality of sheaves, a wire line extending between the sheaves of the upper block and the sheaves of the traveling block, with one end of the wire line forming a deadline which extends from a fixed anchor over a dead sheave of the upper block, the steps comprising:
In a method for measuring equipment depth in well drilling operations having an upper block with a plurality of sheaves and a traveling block having a plurality of sheaves, a wire line extending between the sheaves of the upper block and the sheaves of the traveling block, with one end of the wire line forming a deadline which extends from a fixed anchor over a dead sheave of the upper block comprising:
Dependencies are inferred from the claim text.