Well equipment setting or retrieval tool

A tool for operating within a well pipe at a select orientation with respect to the well pipe comprising:

• operation means for performing a desired operation in a well pipe;
• orientation means for locating an orientation guide surface in a well pipe and including:
• elongate body means,
• centralizer means including at least a pair of centralizing key means radially movable with respect to said body means for centralizing said orientation means in a well pipe,
• means for yieldably urging said centralizing key means radially outwardly,
• orientation pawl means movable radially with respect to said body means independently of said centralizer means between a first position projecting beyond said centralizing means for locating and engaging an orientation guide surface upon movement of said tool through said well pipe in a first direction and a second position retracted within said centralizing means;
• means for yieldably urging said orientation pawl means to said first position;
• and
• means for interconnecting said orientation means and said operation means and for maintaining the relative rotational orientation between said operation means and said orientation means, said centralizing means centralizing said orientation means prior to said orientation pawl means engaging said orientation guide surface when said tool is moved in said first direction.

A tool for performing a desired operation in a well pipe and comprising:

• operation means movable between a running position and an actuated position for performing the desired operation;
• actuator means for actuating said operator means and including:
• elongate body means,
• cylinder means carried by said body means,
• said cylinder means and said body means defining two co-communicating variable volume closed hydraulic chamber means;
• means carried by said body means for engaging an activating shoulder in the well and having multiple positions with respect to said body means;
• a charge of fluid in said co-communicating variable volume hydraulic chamber means;
• force applying means for being affected by said charge of fluid and extending between said actuator means and said operation means and for transmitting an actuating force to said operation means;
• said engaging means being adapted to engage an activating shoulder upon movement of said body means in one direction through a well pipe and, while engaged with said activating shoulder, moving between a first and a second of said multiple positions upon continued movement of said body means in said one direction;
• wherein upon movement of said engaging means between said first and second positions the volume of said two hydraulic chamber means varies inversely and at least a portion of said change of fluid transfers between said two hydraulic chamber means and affects said force applying means to cause an actuating force to be transmitted to said operating means.

An actuating tool comprising:

• operation means movable between a running position and an actuated position for performing the desired operation;
• actuator means for actuating said operator means and including:
• elongate body means;
• cylinder means carried by said body means;
• said body means and said cylinder means forming two co-communicating variable volume closed hydraulic chamber means;
• said cylinder means having multiple positions with respect to said body means;
• means for releasably maintaining said cylinder means in a first of said multiple positions;
• a change of fluid within said two hydraulic chamber means;
• force applying means for being affected by said change of fluid and extending between the actuation means and the operation means and for transmitting an actuating force to the operation means when said cylinder means moves with respect to said body means between said first position and a second position of said multiple positions causing at least a portion of said charge of fluid to transfer between said two hydraulic chamber means;
• means carried by said body means for engaging an activating shoulder in the well and having multiple positions with respect to said body means and for controlling said relative movement of said cylinder means between said first and second positions.

An operation tool for setting and/or retrieving equipment in a well and comprising:

• housing means;
• arm means carried by said housing means and movable between a running position and a second position for setting and/or retrieving equipment;
• a first portion of said arm means comprising tool carrier means;
• a second portion of said arm means comprising lock means;
• means for initially joining said tool carrier means and said lock means so that said tool carrier means and said lock means move in unison from said first position to said second position and for permitting said tool carrier means to move independently of said lock means to a retrieving position;
• and
• latch means for engaging said lock means and for locking said lock means in said second position.