Downhole tool
OwnerDale Parkerinventor
Life of this patent
Estimating the term…
Abstract
A survey tool for attachment to a drill string for inserting the survey tool into a borehole, the survey tool comprising a housing having a proximal end adapted for attachment to the drill string and a bore traversing the housing adapted to receive fluid from the drill string, and a piston adapted to be received within the bore, the piston being adapted to be selectively displaced between at least a first condition and a second condition, wherein in the first condition the fluid exists the housing at a first location and in the second condition the fluid exists the housing at a second location.
Claims24
A survey tool for attachment to a drill string for inserting the survey tool into a borehole, the survey tool comprising a body having a proximal end adapted to receive fluid from the drill string and a distal end for receiving survey equipment, a wall having an inner surface defining a first bore within the body and an exterior surface defining at least a portion of the exterior of the body, and a piston adapted to be displaced within the first bore, the wall comprising a plurality of passages extending between the bore and the exterior surface to allow communication between the exterior of the body and the first bore;
- wherein the piston is adapted to be selectively displaced between a first condition to permit the fluid to flow through at least one first passage of the plurality of passages for delivery of the fluid to a first location surrounding the survey tool, a second condition to permit the fluid to flow through at least one second passage of the plurality of passages for delivery of the fluid to a second location located forefront of the survey tool comprising an area of the borehole to be surveyed by the survey equipment, and a third location to permit the fluid to flow through at least one third passage of the plurality of passages for delivery of the fluid to the survey equipment located at the distal end of the survey tool.
A drill string comprising a survey tool for attachment to a drill string for inserting the survey tool into a borehole, the survey tool comprising a body having a proximal end adapted to receive fluid from the drill string and a distal end for receiving survey equipment, a wall having an inner surface defining a first bore within the body and an exterior surface defining at least a portion of the exterior of the body, and a piston adapted to be displaced within the first bore, the wall comprising a plurality of passages extending between the bore and the exterior surface to allow communication between the exterior of the body and the first bore;
- wherein the piston is adapted to be selectively displaced between a first condition to permit the fluid to flow through at least one first passage of the plurality of passages for delivery of the fluid to a first location surrounding the survey tool, a second condition to permit the fluid to flow through at least one second passage of the plurality of passages for delivery of the fluid to a second location located forefront of the survey tool comprising an area of the borehole to be surveyed by the survey equipment, and a third location to permit the fluid to flow through at least one third passage of the plurality of passages for delivery of the fluid to the survey equipment.
A downhole camera comprising a survey tool for attachment to a drill string for inserting the survey tool into a borehole, the survey tool comprising a body having a proximal end adapted to receive fluid from the drill string and a distal end for receiving survey equipment, a wall having an inner surface defining a first bore within the body and an exterior surface defining at least a portion of the exterior of the body, and a piston adapted to be displaced within the first bore, the wall comprising a plurality of passages extending between the bore and the exterior surface to allow communication between the exterior of the body and the first bore;
- wherein the piston is adapted to be selectively displaced between a first condition to permit the fluid to flow through at least one first passage of the plurality of passages for delivery of the fluid to a first location surrounding the survey tool, a second condition to permit the fluid to flow through at least one second passage of the plurality of passages for delivery of the fluid to a second location located forefront of the survey tool comprising an area of the borehole to be surveyed by the survey equipment, and a third location to permit the fluid to flow through at least one third passage of the plurality of passages for delivery of the fluid to the survey equipment.
Dependencies are inferred from the claim text.