Abstract: This invention provides a process for the control of broadleaf weeds and grasses. The process comprises applying to an area containing broadleaf weeds and grasses a composition comprising a mixture of about 1 to 2 parts by weight of cacodylic acid or salts thereof and about 2 to 4 parts by weight of methane arsonic acid or salts thereof.

Abstract: A vibration isolator includes telescoping tubular mandrel and barrel members between which torque is transmitted by an internally splined urethane bushing affixed to the cylindrical interior of the steel barrel and a urethane layer over the splined outer surface of the steel mandrel. Axial loads are transmitted in both directions between shoulders on the mandrel and barrel through two annular urethane members, one for each direction, disposed in annular pockets between the mandrel and barrel, which have greater radial thickness than do the rings, allowing room for deformation of the rings by axial loading. A replaceable sliding seal between the upper end of the mandrel and the barrel retains drilling fluid passing through the isolator. A sliding bearing between the mandrel and the lower end of the barrel cooperate with the seal at the upper end of the mandrel to take bending moments.The urethane annuluses are shaped, e.g.

Abstract: Two fluid passages are connected through flow restrictors to a fluid supply. Downstream of the restrictors the fluid supply has a drooping pressure-load characteristic. Venting means for the fluid passages comprises vent openings therein downstream of the restrictors and variable position obstructor means cooperating with vent openings to vary the venting and thereby vary fluid pressures in the fluid passages.Fluid conduits connect these pressure outputs to a piston moving in a cylinder whose opposite ends are connected to the fluid conduits. The piston and cylinder form the responder of the system. A feed back means controlled by the position of the responder piston and/or the load varies pressure in the fluid conduits by variably venting same.The feedback means includes variable cross-section surface pasages, e.g. sloping grooves, in the responder piston or fluidic load piston or both. Alternatively or additionally a separate feedback piston may be connected to the receiver or load piston.

Abstract: The eccentric journals of a tandem roller stabilizer are azimuthally positioned relative to each other by a single thread on the mandrel onto which the journals of the successive roller assemblies are screwed, the journal of each roller assembly having a like thread and together with its end plates having a length adapted to encompass a portion of the mandrel thread having a length of (n)(360) + x degrees where n is an integer and x is the desired azimuthal displacement of each roller assembly journal from the adjacent journals. Preferably x is equal to (360)/(r) degrees where r is the number of roller assemblies on the stabilizer, so that the points of stabilizer contact with the bore hole are spaced uniformly all around the stabilizer axis. The bearings supporting the rollers on the journals may be bushed only on the loaded side and be unsealed, being cooled with air bled from the stabilizer mandrel and exhausted through the bearings. Other forms of bearings can be used, e.g.

Abstract: An electronic adding machine for adding and subtracting feet, inches, and sixteenths inch has a hexadecimal keyboard with the decimal keys 0-9 contrasting with the six other keys 10-15. Each addened and subtrahend applied to the keyboard is encoded in binary coded hexadecimal (sixteenths and inches) and decimal (feet) and temporarily stored in receiver registers.Whatever data is in the receiver registers is continually read out by an L.E.D. display. Read out is effected by first converting the inch and sixteenths data to binary coded decimal and thereafter converting all the data from BCD to seven segment L.E.D. signals. Timed blanking of the L.E.D.s saves battery power.Accumulator registers store the total of all previous entries. When an add or subtract key is actuated, a hexadecimal full adder adds the augend in the accumulator registers and the data in the receiver registers, the result is entered in the accumulator registers, and the receiver registers are cleared to receive more data.

Abstract: Two fluid passages are connected through flow restrictors to a fluid supply. Downstream of the restrictors the fluid supply has a drooping pressure-load characteristic. Venting means for the fluid passages comprises vent openings therein downstream of the restrictors and variable position obstructor means cooperating with vent openings to vary venting and thereby vary fluid pressures in the fluid passages. This forms a mechanical to fluidic translator. Pressures at the translator's outputs are a function of the obstructor's position. This translator forms the transmitter of a servo or remote control or indicator system.Fluid conduits connect these pressure outputs to a fluid to mechanical translator comprising a double acting piston moving in a cylinder whose opposite ends are connected to the fluid conduits. The piston and cylinder form the responder of the system, which may be adjacent the mechanical to fluidic translator and form part of the transmitter.

Abstract: A stabilizer for a big hole drill stem includes a journal, i.e., a sleeve, adapted to be slipped over the stem. The sleeve has an apertured lower flange to seat on the stem stool and receive the pins thereof to prevent relative rotation of sleeve and stem. The upper end of the sleeve has a clutch jaw for interlocking with the clutch jaw on the lower end of a canister weight forming part of a drill string assembly. Also, the upper end of the sleeve, just below the clutch, has a split clamp held in frictional engagement with the sleeve in an annular groove thereabout. Just below the clamp there is an annular upper flange having stop lugs engageable between the ears of the clamp to prevent relative rotation. Rotatably mounted on the sleeve between the upper and lower flanges is a fixed blade stabilizer body. A marine bearing is provided at the inner periphery of the stabilizer to take radial loads.

Abstract: The eccentric journals of a tandem roller stabilizer are azimuthally positioned relative to each other by cylindrical pins removably disposed in cylindrical holes extending off-axially parallel to the stabilizer axis, the holes being formed by semi-circular cross-section grooves in the outer periphery of the mandrel and correlative semi-circular cross-section grooves in the inner peripheries of the journals.

Abstract: According to the invention, there is provided a box hole drill steel with a replaceable water pipe coaxially mounted therein by elastomeric support means.

Abstract: The eccentric journals of a tandem roller stabilizer are azimuthally positioned relative to each other by multiple lead threads on the mandrel onto which the journals of the successive roller assemblies are screwed, the journal of each roller assembly having like multiple lead thread of an integral number of turns per lead. In assembling the successive journals on the mandrel each journal is started on the lead immediately adjacent to the lead on which the preceding journal was assembled, progressing continuously in the same direction around the mandrel, whereby each journal is displaced azimuthally from adjacent rollers by an angle x equal to 360/n.degree. where n is the thread multiplicity and is equal to the number of roller assemblies on the stabilizer.

Abstract: Dual flow passage drill stem has a tube radially supported within a drill pipe by a plurality of metal ribs welded to the middle portion of the tube and by elastomer O-rings mounted in spiders disposed around the tube connectors and seated against outwardly facing shoulders in the pipe tool joints. Axial loads are taken by elastomer rings around the tube connectors clamped between outwardly facing annular rabbets at the inner periphery of each spider and an integral flange on the pin tube connector and a threaded flange screwed onto box tube connector. The tube is preloaded in tension and the pipe and elastomer rings are preloaded in compression. The axial support elastomer rings preferably have hour-glass cross sections to increase their damping effect; in addition, the axial support elastomer rings, as well as the radial support O-rings, are preferably made of neoprene, which has a relatively flat curve of force transmission versus frequency.

Abstract: Dual conduit drill stem member includes pipe having two piece tube therewithin affixed to pipe at outer ends and inner ends coupled by composite elastomeric sleeve and telescopic metal coupling, adjacent members being connected by threaded tool joints on pipe ends and compression sealed telescopic joints on tube outer ends.

Abstract: A replaceable stabilizer comprises a steel sleeve with fixed blades adapted to be installed over the reduced lower box end of tubular rotary drill steel member prior to insertion of the taper threaded pin of a drill bit into the taper threaded drill steel box. The drill steel member may be a special sub or a regular length of drill steel with modified lower end. An internal straight thread at the upper end of the sleeve screws onto an external straight thread on the drill steel box. An annular rubber gasket secured to the upper end of the sleeve is clamped between the upper end of the sleeve and a shoulder on the steel between the main body and the reduced box end thereof. An inturned flange at the lower end of the sleeve is clamped between a shoulder provided by the mouth of the drill steel box and a shoulder on the drill bit around its taper threaded pin. Make up of the pin and box forms a rotary shouldered connection.

Abstract: Extended casing method and apparatus for completing an underwater well whereby complete and continuous pressure control is maintained at the surface drilling platform. A conductor casing is installed in the floor of a body of water with a casing head and riser attached near the floor. Other casing is installed and supported at the water floor by hanger heads and having other risers extending upwardly therefrom. Pressure control equipment is installed at the upper end of one of the risers. An innermost casing having a tubing hanger-head attached is lowered through the pressure control equipment and installed. An orientation sleeve is aligned with the tubing hanger-head to properly orient the tubing hanger. The tubing hanger and tubing, is then passed through the pressure control equipment and the innermost riser, to which the pressure control equipment is attached and is lowered to engage the orientation sleeve for proper alignment with the innermost hanger-head and remotely latched thereto.

Abstract: Extended casing method and apparatus for completing an underwater well whereby complete and continuous pressure control is maintained at the surface drilling platform. A conductor casing is installed in the floor of a body of water with a casing head and riser attached near the floor. Other casing is installed and supported at the water floor by hanger heads and having other risers extending upwardly therefrom. Pressure control equipment is installed at the upper end of one of the risers. An innermost casing having a tubing hanger-head attached is lowered through the pressure control equipment and installed. An orientation sleeve is aligned with the tubing hanger-head to properly orient the tubing hanger. The tubing hanger and tubing is then passed through the pressure control equipment and the innermost riser, to which the pressure control equipment is attached, and is lowered to engage the orientation sleeve for proper alignment with the innermost hanger-head and remotely latched thereto.

Abstract: The coupling comprises a flexible conduit, a packoff assembly, and a gland nut for compressing the packoff assembly. The conduit passes through a passage in a first member and is secured to the outlet of a second member. The nut is threaded into the passage of the first member to compress the packoff for sealing securement of the conduit to the first member even though the axes of the passage and of the outlet are not coincident. A collar is disposed on the interior end of the conduit to prevent the conduit from blowing out of the passage if the conduit should break or disconnect from the second member.

Abstract: A portable skid mounted fully equipped topping plant for the distillation of gasoline and diesel fuel from crude oil feed, equipped with its own power supply, capable of producing its own electricity and power requirements, utilizing fuel processed from the crude feed, and designed for automatic operation and equipped with an automatic shut-down system.

Abstract: A curtain wall construction designed for glazing from the inside of the building, with the rubber gasket on the outside of the building, using a T-shaped gasket which fits into an outside facing groove formed in horizontal and vertical members assembled to make a frame for a wall panel, the relative dimensions of the frame and the gasket being such that the gasket may be first installed in the grooves, the wall panel may then be set in place resting against the gasket, and a panel clamping device attached from the inside to clamp the panel against the gasket and also cover the horizontal and vertical members to present a smooth inside appearance.

Abstract: Well productivity is increased by multiple hydraulic fracturing cycles. A double cycle first creates a long primary fracture by fluid injection and forms spalls by subsequently allowing the pressure in the fracture to drop below the initial fracturing pressure by discontinuing injection and shutting the well in or allowing it to flow back, resuming injection to displace said spalls longitudinally in said fracture and again discontinuing injection, whereupon the fracture is propped open by the displaced spalls.Multiple applications of this double cycle successively create transversely directed secondary long fractures.