Abstract: A wellbore isolation device includes a tubular body having an inner bore formed longitudinally therethrough. A plurality of centralizing arms is radially extendible from the tubular body. At least one slip is radially extendible from the tubular body. A sealing assembly that is radially extendible from the tubular body is also included and disposed between the centralizing arms and the slip. The sealing assembly includes a radially extendible elastomeric sealing surface and an anti-extrusion device having at least two support members coupled to opposite longitudinal ends of the elastomeric sealing surface. An equalizing port is also included which is disposed in the tubular body and permits, when opened, fluidic communication between external the tubular body and the inner bore thereby equalizing the pressure between external the tubular body and the inner bore.

Abstract: A wellbore isolation device includes a tubular body having an inner bore formed longitudinally therethrough. A plurality of centralizing arms is radially extendible from the tubular body. At least one slip is radially extendible from the tubular body. A sealing assembly that is radially extendible from the tubular body is also included and disposed between the centralizing arms and the slip. The sealing assembly includes a radially extendible elastomeric sealing surface and an anti-extrusion device having at least two support members coupled to opposite longitudinal ends of the elastomeric sealing surface. An equalizing port is also included which is disposed in the tubular body and permits, when opened, fluidic communication between external the tubular body and the inner bore thereby equalizing the pressure between external the tubular body and the inner bore.

Abstract: A latching assembly for wellbore logging tools includes a bottom hole assembly to be disposed on a distal end of a drill string. The bottom hole assembly includes a landing sub having a bore with a latching mechanism that includes latch jaws and bias springs. The latch jaws can receive a landing shoulder. The biasing spring has a closing arm and an opening arm to respectively close and open the latch jaws. The bottom hole assembly includes a tool string that includes the landing shoulder for engaging with the latch jaw of the landing sub, the biasing spring, and a logging assembly that includes at least one logging tool for obtaining and storing data about at least one geologic formation penetrated by the wellbore.

Abstract: A latching assembly for wellbore logging tools includes a bottom hole assembly to be disposed on a distal end of a drill string. The bottom hole assembly includes a landing sub (310) having a bore with a latching mechanism that includes latch jaws (321) and bias springs (323). The latch jaws can receive a landing shoulder (215). The biasing spring has a closing arm (352) and an opening arm (354) to respectively close and open the latch jaws. The bottom hole assembly includes a tool string (200) that includes the landing shoulder for engaging with the latch jaw of the landing sub, the biasing spring, and a logging assembly that includes at least one logging tool for obtaining and storing data about at least one geologic formation penetrated by the wellbore.

Abstract: A method for conveying logging tools (LT) and obtaining well log data from a wellbore is disclosed. The method includes running a drill string (DS) including a landing sub (LS) disposed near the lower end into a wellbore. A logging tool string (LTS) is inserted into the upper end of the DS bore. A fluid is pumped into the upper end of the DS bore to assist movement of the LTS. As the fluid is pumped behind the LTS, the cable at the surface is spooled out and the fluid pressure is monitored. The landing assembly of the LTS is landed in the LS. A diagnostic test is activated and run to determine proper functioning of the LT. A release mechanism releases the running tool portion of the LTS. The cable is spooled in. The drill pipe string is pulled upward in the wellbore as the LT are recording data.

Abstract: A method of communication from the surface with to the downhole logging tool string is disclosed. The method includes movement of the drill pipe string up or down at the surface to create coded signature signals by the downhole logging tool string and send those signature signals to a processor in the downhole logging tool string that has been preprogramed to recognize the signature signals.

Abstract: A method for conveying logging tools (LT) and obtaining well log data from a wellbore is disclosed. The method includes running a drill string (DS) including a landing sub (LS) disposed near the lower end into a wellbore. A logging tool string (LTS) is inserted into the upper end of the DS bore. A fluid is pumped into the upper end of the DS bore to assist movement of the LTS. As the fluid is pumped behind the LTS, the cable at the surface is spooled out and the fluid pressure is monitored. The landing assembly of the LTS is landed in the LS. A diagnostic test is activated and run to determine proper functioning of the LT. A release mechanism releases the running tool portion of the LTS. The cable is spooled in. The drill pipe string is pulled upward in the wellbore as the LT are recording data.

Abstract: A method of communication from the surface to the downhole LT is disclosed. The method includes movement of the DS string up or down at the surface to create coded signals by the downhole TS and send those signature signals to a processor in the TS string that has been preprogramed to recognize the signature signals.