Apparatus for locking wire line instrument to drill collar
AssigneeScientific Drilling International, Inc.
InventorsDonald H. Van Steenwyk, Raymond W. Teys, Robert M. Baker
Life of this patent
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Abstract
An apparatus for supporting instrumentation in a drill collar in a well, such instrumentation being subject to travel in the well to and from the drill collar comprising instrumentation having upper and lower end portions and being elongated between the end portions; there being tongue and groove interfit elements to suspend the instrumentation at the drill collar; one of the elements carried by the drill collar, and the other of the elements carried by the upper portion of the instrumentation, whereby the elements interfit as the instrumentation is traveled downwardly in the drill collar with the instrumentation lower portion hanging freely below the level of the elements.
Claims18
An apparatus for supporting instrumentation in a drill collar in a well, such instrumentation being subject to travel lengthwise in the well to and from the drill collar, the combination comprising
- a) said instrumentation having upper and lower end portions and being elongated between said end portions,
- b) tongue and groove interfit elements to suspend the instrumentation within the drill collar,
- c) one of said elements carried by the drill collar, and the other of said elements carried by the upper portion of the instrumentation, whereby said elements interfit as said instrumentation travels downwardly in the drill collar with said instrumentation lower portion hanging freely below said elements.
In the method of supporting instrumentation in a well, such instrumentation including an elongated, narrow housing past which drilling mud flows downwardly, the steps that include
- a) traveling said instrumentation downwardly in the well to a selected location, via a wire line, providing cushioning means in the well at said location,
- b) supporting said instrumentation in the well at said location and independently of said wire line, whereby the major length of the housing hangs freely in the well, and the housing also extending sidewardly adjacent said cushioning means,
- c) and causing drilling mud to flow downwardly in the well and adjacent said housing.
Dependencies are inferred from the claim text.