A self-retaining shear pin tool and methods for connecting downhole tubulars in a wellbore are disclosed. The self-retaining shear pin tool includes a cap having an inner side and an outer side opposite the inner side, the cap defining a first recess formed in the inner side of the cap, the first recess of the cap having a cylindrical portion and a frustoconical portion extending from the cylindrical portion towards the outer side of the cap, and a shear pin disposed partially in the first recess of the cap and extending out of the first recess of the cap. The shear pin includes a body, a first recess extending inward from a first end of the body, a second recess extending inward from a second end of the body, a first swage, and a second swage die.

An orienting system for precisely aligning downhole tools with respect to each other, such as perforating guns, exploration tools, or other completions tools. The orienting system provides for orienting a first tool with respect to a second tool in a predetermined number of degrees of rotation, and then locking down the combination for use downhole in that configuration.

A drill assembly (10) for use in trenchless subterranean boring, comprising: a drill shoe (20) having a body with a posterior portion (30) and an anterior portion (22), the latter defining a recess while the former comprises drill bits (32) disposed on a front end (34), opposing lateral sides, and flanks to assist the shoe (20) in acting as both pilot bore drilling tool and as reaming tool; a drill head (50) demount ably mounted to tire drill shoe (20) via tire recess and in communication with directional guidance means; a string of connectable drill rods (80), having a bailing end (82) and a leading end (84) when connected, and through which a drilling solution can be pumped towards tire drill shoe (20); a coupling (86) for linking tire leading end (84) to said drill head (50); and a connector (88) for connecting the trailing end (82) to a vehicle. The invention extends to a drill shoe (20) and a method of use and manufacture thereof.

The invention relates to a rod section of a ground drilling rod, wherein the rod section is configured at the end to form a plug connection and has (a) a male connector or (b) a female connector at at least one end, wherein the male connector has at least one circular portion and at least one more straight-line-like portion in cross section on the outside, or the female connector has at least one circular portion and at least one more straight-line-like portion in cross section on the inside.

A directional core drilling includes an outer barrel assembly with at least one steering pad for orientating a drill bit within a hole and a drive barrel rotationally supported within the outer barrel assembly. An inner drive assembly is receivable within the outer barrel assembly and includes a torque latch assembly and an anti-rotation bearing assembly. The torque latch assembly includes latch arms configured to releasably couple a rotational drive input to the drive barrel. A core barrel is coupled to the anti-rotation bearing assembly and is rotationally fixed relative to the drive barrel.

The present application relates to a locking apparatus for locking axial ends of first and second drilling rig components in a connected state, the connected state established by sufficiently rotating the first drilling rig component relative to the second drilling rig component in a first direction. The apparatus includes a first locking means that enables the first and second drilling rig components to be locked in their connected state by causing, during rotation of the first drilling rig component in the first direction, the locking apparatus to engage with the first drilling rig component in a configuration that prevents the first drilling rig component from rotating in a direction opposite to the first direction. The apparatus further includes a second locking means that enables the locking apparatus to be prevented from rotation relative to the second drilling rig component, including during rotation of the first drilling rig component in the first direction, the locking apparatus thereby preventing relative rotation between the first and second drilling rig components.

A deployment tool that can be used on land, jack-up and floating drilling rigs. The tools is installed around a drillpipe tool joint making it independent of the drill string load path as well as independent of the drill pipe thread and drill pipe size. It is designed for the largest commonly used drillpipe size, so has a single outer dimeter configuration that can be adapted from the largest drillpipe to the smallest in use with simple mechanical adapters. Thus, one main tool and a set of adapters is all that is required. The tool may be used in the deployment of RCDs, for example in the landing of an RCD bearing assembly on an RCD housing, or in the deployment of tubing hangers, lining hangers, casing hangers or other or any other temporary completion tool.

A drill head assembly may include a sonde housing and a drill bit. Two or more alignment posts protruding from the steering face of the sonde housing may mate with holes on the underside of a Horizontal Directional Drilling (HDD) drill bit and are used to align the drill bit and transfer much of the forces from the drill bit to the sonde housing. The alignment posts reduce the load on the drill bit mounting bolts and help prevent these bolts from breaking while drilling in difficult ground conditions.

A drill pipe connecting apparatus has radially extending locking openings to the drilling drive of a rig. An inner tube receives a free end of the drill pipe by the locking opening of the drill pipe. An outer tube at least partially encompasses the inner tube and connects to the drive. The inner tube has, at the drill pipe end, radially extending through-recesses for guiding/allowing passage of locking elements, radially slidingly movable in the through-recesses. External guide elements on the outer tube form control gates for adjusting the radial position of the locking elements between open/locking positions by relative rotation. A connecting device releasably connects the tubes in a rotationally fixed manner; positive-locking elements extend circumferentially around the inner face of the outer tube and on the outer face of the inner tube. These elements enter into positive-locking engagement or reach free-running position, depending upon the longitudinal tube position.

A system for connecting a drill bit and pipe puller to a drill string. The system includes a downhole tool having an internal cavity and a through-hole in its wall. A coupler may be slidingly received in the cavity and connected using one or more fasteners which interconnect a groove in the coupler to the wall of the downhole tool. Fasteners used may be screws or bolts interconnecting the wall of the tool with radial holes in the coupler. Alternatively, bolts may interconnect the wall with a circumferential groove on the coupler. A drill bit may be threaded into the coupler. The coupler allows drill bits and other tools to be connected and disconnected from a downhole tool without unthreading the drill bit.