Abstract: A rotary jetting tool for connection to a hollow, fluid conducting workover string has a main tool body with a hollow central passageway and a rotatable jet carrier mounted on a depending central shaft. A rotor, with fluid conducting passageways is mounted on the central shaft for rotation and limited axial movement and has fluid flow reaction outlets to urge rotation and axial movement. A striking lug on the rotor cooperates with a reaction lug on the jet carrier to provide incremental rotation and a jet head, with jet orifices directed to impact mineral deposits in the well bore is connected to the jet carrier and houses the rotor, so as to receive and discharge workover string fluid flow through the jet orifices as the jet head rotates.

Abstract: Apparatus for an improved method for drilling earthen boreholes with a fluid powered rotary motor mounted on the downhole end of a non-rotating, fluid conducting drill string has a fluid powered, axially reciprocating hammer coupled to the motor by means of a rotary coupling having freedom for axial movement, so that the hammer will be rotated by the motor and the motor will be axially isolated from the reciprocating hammer as both are powered by fluid conducted from the surface through the drill string.

Abstract: This specification involves combining automatic fluid driven bit hammering apparatus with generic rotary drilling motor assemblies used on non-rotating drill strings to produce more effective well and earth borings.

Abstract: A drilling fluid powered rotary drilling motor is mounted on the downhole end of a non-rotating fluid conducting drill string has a drill bit on its distal end and a plurality of fluid engaging, rotating elements coupled to at least one speed reducing planetary gear stage that converts the kinetic and pressure energies of the drilling fluid to mechanical power for rotating the drill bit. The drilling motor includes a lubricator, a drilling fluid filter, a pressure relief valve, a bypass valve and a check valve and is mounted with an output isolation coupling and a bearing package sized to withstand drilling load conditions.

Abstract: An improved downhole fluid pressure powered reciprocating rotary drilling motor includes an automatic fluid valve means and a fluid controller that in combination provide a fluid driven periodic forcing function to excite a drill bit both axially and rotationally for enhanced drill bit penetration in oil well work-over and oil well open hole earth borings on both rotating and non-rotating drill strings.

Abstract: A novel fluid powered rotary percussion drill is disclosed having a small, efficient, fluid energy to impulsive mechanical energy conversion motor and a unique bit arrangement wherein individual independently acting formation disintegration inserts are periodically actuated by the motor at a comparatively high cycle frequency to drill earthen boreholes. Bit drilling structure is renewable by replacing individual inserts and better borehole diameter and bit cutting ability is maintained by rotational gage row inserts. Bottom borehole sensing structure determines drill operational mode.

Abstract: A tool for improving drill bit penetration in the drilling of oil, gas and water wells and the like is provided. The tool includes a housing and a mandrel connected for co-rotation and limited axial movement under the influence of a spring fluid. The mandrel and drill bit in conjunction with the spring fluid form a spring-mass system having a damped fundamental frequency of oscillation approximately equal to a characteristic frequency of forces (F.sub.2) which act on the drill bit during drilling. Resonance causes the forces acting on the bit (F.sub.2) to be amplified and magnified, thereby increasing the drilling rate.

Abstract: A drill string reamer-stabilizer includes a main body adapted to be connected as an element of a rotary drill string. Individual bearing shafts are mounted axially along the exterior of the main body to support roller cutters that engage the wall of the borehole. Seal units are positioned around each bearing shaft between each roller cutter and bearing shaft to define a lubricant space. The seal units retain lubricant in the lubricant space and prevent contaminating fluid and materials in the borehole from entering the lubricant space. At least one seal unit comprises an annular cup-shaped elastomer seal member mounted in an annular seal gland in the roller cutter. The seal gland has an inner side adjacent the lubricant space and an outer side exposed to the fluid and materials in the borehole.

Abstract: An improved adjustable-spray mechanism which includes a button body to be fixedly connected to the exit stem of an aerosol or other fluid container, the button body being characterized by a bore having an end wall. An orifice extends through the end wall from the bore and constitutes a spray outlet to the environment. An adjustable valve is disposed in the bore so as to selectively advance toward or retract from the end wall. Upon introduction of fluid to the bore, a variable fluid spray pattern can be obtained upon adjustment of the valve toward or away from the orifice in the wall.