Abstract: A horizontal directional drilling tool and method for drilling a borehole through a subsurface formation between locations at a surface is disclosed. The drilling tool includes a bit, an outer tube, an inner tube, and rotational drivers. The outer tube is coupled to a surface driver. The inner tube is coupled between the surface driver and the bit to translate rotation therebetween. The inner tube has a drilling fluid passage therethrough, and is positioned within the outer tube to define a return flow passage therebetween. The rotational drivers include propulsors coupled to the inner tube. The propulsors comprise blades extending into the return flow passage and rotationally driven therein whereby returns in the borehole are urged uphole.

Abstract: A portable pipe thrusting apparatus for inserting and removing a pipe from a borehole, comprising a collar configured to releasably grip the pipe; and a bi-directional driver coupled between the collar and the support frame, the driver configured to drive the collar toward and away from the borehole, to insert and remove the pipe from the borehole, wherein the support frame is portable and is transportable by a truck to the drilling site.

Abstract: A pipe thrusting apparatus for inserting and removing a pipe from a borehole, comprising a collar configured to releasably grip the pipe; a support frame having at least one anchor securable to the ground; and a bi-directional driver coupled between the collar and the support frame, the driver configured to drive the collar toward and away from the borehole to insert and remove the pipe from the borehole.

Abstract: A portable pipe thrusting apparatus for inserting and removing a pipe from a borehole, comprising a collar configured to releasably grip the pipe; and a bi-directional driver coupled between the collar and the support frame, the driver configured to drive the collar toward and away from the borehole, to insert and remove the pipe from the borehole, wherein the support frame is portable and is transportable by a truck to the drilling site.

Abstract: A pipe thrusting apparatus for inserting and removing a pipe from a borehole, comprising a collar configured to releasably grip the pipe; a support frame having at least one anchor securable to the ground; and a bi-directional driver coupled between the collar and the support frame, the driver configured to drive the collar toward and away from the borehole to insert and remove the pipe from the borehole.

Abstract: A large diameter bore—in the range of 30 inches or more—is made through a geologic formation, such as the active surf zone and into the maritime zone. The drill head is provided with a mud powered motor (typically of the Moyno variety) which drives a hydraulic pump connected to a plurality of closed loop hydraulic circuits remotely controlled through electrical connection along the large diameter bore. One hydraulic circuit powers the rotating drill head; a second hydraulic circuit powers a mud and tailings evacuation pump; and a third hydraulic circuit articulates the drill head to provide direction. Mud exhausted from the mud motor is exhausted to the cutting head of the drill and evacuated along with dislodged cuttings through a pump in the drill head. The pump is individually controlled to pump at a rate, which assures a slight negative pressure in the required annulus about the drilled conduit, thus assuring that any leakage is from the surrounding soil into the annulus.

Abstract: A large diameter bore—in the range of 30 inches or more—is made through a geologic formation, such as the active surf zone and into the maritime zone. The drill head is provided with a mud powered motor (typically of the Moyno variety) which drives a hydraulic pump connected to a plurality of closed loop hydraulic circuits remotely controlled through electrical connection along the large diameter bore. One hydraulic circuit powers the rotating drill head; a second hydraulic circuit powers a mud and tailings evacuation pump; and a third hydraulic circuit articulates the drill head to provide direction. Mud exhausted from the mud motor is exhausted to the cutting head of the drill and evacuated along with dislodged cuttings through a pump in the drill head. The pump is individually controlled to pump at a rate, which assures a slight negative pressure in the required annulus about the drilled conduit, thus assuring that any leakage is from the surrounding soil into the annulus.

Abstract: This invention relates to a storage container and to a stack of such containers, and in particular to a container for the storage of a number of similarly-sized articles such as compact disks or the like. According to the invention there is provided a storage container for compact disks or the like having a first connector part and a second connector part, the connector parts being adapted to interconnect the storage container with at least one adjacent storage container so that the container is stackable. There is also provided a stack of storage containers in which the first connector part of one storage container is interconnected with the second connector part of an adjacent storage container, and in which all of the storage containers in the stack are identically formed.