Abstract: An apparatus for pressurized cleaning of flow conductors. The apparatus utilizes a control slot formed in a zig-zag pattern and a pin which travels in the slot. The slot and pin assist in indexingly rotating the nozzle section of the apparatus when the apparatus is reciprocated in alternate directions in the flow conductor. Pressurized cleaning fluid is supplied to the apparatus and is directed radially outward through nozzles against the flow conductor in such a manner as to progressively clean the flow conductor as the nozzle section rotatively indexes. Another set of nozzles may be included, if desired, in the lower end of the apparatus to allow cleaning along the longitudinal axis.

Abstract: An adapter to be used in conjunction with a tubular flushing device to unclog a drain pipe. The tubular flushing device expands during usage. The tubular flushing device is to fit within the adapter and is to expand during usage into tight contact with the interior wall of the adapter. The fore end of the adapter is tapered slightly to facilitate tight connection with the inlet opening of the drain pipe.

Abstract: An apparatus for cleaning tubular elements with pressurized fluid including an improved fluid driver, reciprocating lance means having interchangeable piston portions and nozzles to enable the speed of the lance to be controlled is provided.

Abstract: An externally controllable apparatus for cleaning the slag deposits from the inner surfaces of a cyclone burner includes a support structure having a carriage slidably mounted thereon. A fluid-conducting swivel is mounted on the carriage for providing a rotatable coupling to a pipe extending through the cyclone. The carriage is moved along the support by a suitable movement mechanism so that fluid lances movably mounted on the pipe are properly disposed at selectable longitudinal positions within the cyclone burner. The fluid lances are transversely movable so that they can be moved toward or away from the side wall of the cyclone burner. A plurality of pairs of nozzles are used for directing a spray of cleaning fluid toward respective portions of the cyclone.

Abstract: A mobile sewer and catch basin cleaning vehicle dislodges and removes debris in a conventional manner. The dislodged debris is then conveyed into a debris-receiving compartment where it undergoes a two-stage filtration process. The first stage removes the coarser debris from the reclaimed contaminated water. The second stage filters out the finer particulate debris by drawing such water through a finely filtered media surrounding a rotating drum. This filtered reclaimed water is then re-used in the cleaning operations. The extremely fine filtration media is continually cleaned by small amounts of clean water being applied at high pressure through nozzles designed to spray the entire media area as the drum rotates.

Abstract: This invention relates to apparatus for cleaning sewers or the like and more particularly to apparatus which is fast, thorough and otherwise effective in cleaning sewers and which is very inexpensive in construction and operation, requiring no supply of electrical, mechanical or fluid power thereto and requiring minimal effort and manpower for operation. The apparatus is readily controlled to obtain optimum performance under varying conditions, is highly reliable and is relatively light in weight and readily transported from one place to another.

Abstract: A method and system for cleaning well liners employing a non-rotating tubing string attached to a hydraulic jet carrier assembly is disclosed. The assembly has a plurality of jet nozzles spaced along its length, each of said nozzles expelling a stream of fluid under pressure against the liner with a force which has an equal and opposite reactive force. At least some of the nozzles are oriented along the carrier such that the reactive force for each jet is directionally offset with respect to the central axis of the carrier, thereby creating a twisting moment tending to rotate the carrier about its central axis. During the cleaning operation, the bottom hole differential pressure of the fluid supplied to the jet carrier is varied to rotationally displace the carrier as it is moved vertically within the well bore. Moreover, in a preferred embodiment, the angle of rotational displacement can be calculated which will produce at least double coverage of the jet streams against the liner.

Abstract: Tube bundle cleaning apparatus is disclosed in which cleaning is effected by high pressure water jets impinging upon the tubes of the bundle. The tube bundle is supported on power rollers and a pair of carriages are disposed on opposite sides of the bundle. Each carriage supports a rotatable cleaning head and a non-rotatable cleaning head, both of which are adjustably positionable on the carriage for obtaining optimum location relative to different size tube bundles. The non-rotatable cleanig head includes plural sets of jet nozzles, each set being adjustable in the vertical direction to provide optimum spacing relative to different size tubes to be cleaned. The carriages are mounted on respective tracks for reversibly traversing the tube bundle in repeated cycles to clean a selected swath of the bundle. When the selected swath is cleaned, the tube bundle is rotated to another angular position by the power rollers for cleaning of another swath. The process is repeated until the entire tube bundle is cleaned.

Abstract: Fluid jet apparatus and method for cleaning material from the inside of a tubular conduit utilizing a cleaning head that lies adjacent to one wall of the conduit and includes at least two fluid jet forming means for directing a plurality of high pressure fluid cutting jets in a forward direction and at an acute angle relative to the axis of the head and the conduit so that they are directed toward the opposite wall of the conduit. The cleaning head is rotated around and remains adjacent to the wall of the conduit and is advanced into the conduit as the jets cut away the material whereby the fluid jets create an asymmetric cutting pattern on the surface of the material and the counter thrust of the fluid jets keeps the cleaning head offset relative to the axis of the conduit and against the wall of the conduit to provide passage for removal of the cut material and spent fluid away from the cutting area and out the end of conduit.

Abstract: A solid surface is eroded by directing a liquid axially through a converging passage in a nozzle toward the surface, then deflecting the liquid in a lateral direction parallel to the surface while the liquid is subject to cavitation.

Abstract: The improved pipe flushing device comprises an elongated, elastomeric, hollow tubular member having a middle portion free to expand radially under water pressure. The rear inlet end of the tubular member is fitted with a hose connector, while the narrow front outlet end of the tubular member contains a valve which opens upon expansion of the middle portion. The valve has a cage bearing a rear plate closure, and open sides and front. The rear plate is received in a transverse groove in the outlet, which groove is of a greater length than the thickness of the plate. The cage is gripped and held in a fixed position while the tubular member is in the relaxed unexpanded state. However, when the device is inflated by water pressure from a water hose connected to the inlet connector while in a water pipe, the middle portion thereof expands to meet the wall of the pipe.

Abstract: In order to create a water pressure jet cleaner, especially for clogged sinks, which is as simple as possible, quick and handy to use and which can be used with the most widely differing water faucets, it is equipped with a connecting hose (11) with a connecting adapter (7), which can be attached by means of a clamping device (32, 27-31). A cleaning head (13) is provided at the other end of the connecting hose (11).

Abstract: A method and system for cleaning well liners employing a non-rotating tubing string attached to a hydraulic jet carrier assembly is disclosed. The assembly has a plurality of jet nozzles spaced along its length, each of said nozzles expelling a stream of fluid under pressure against the liner with a force which has an equal and opposite reactive force. The nozzles are oriented along the carrier such that the reactive force for each jet is directionally offset with respect to the central axis of the carrier, thereby creating a twisting moment tending to rotate the carrier about its central axis. During the cleaning operation, the bottom hole differential pressure of the fluid supplied to the jet carrier is varied to rotationally oscillate the carrier as it is moved vertically within the well bore to increase the coverage of the fluid streams on the liner.

Abstract: A method for cleaning well liners employing a jet carrier assembly having a plurality of jet nozzles spaced along its length each of said nozzles expelling a stream of fluid against the liner. The jet carrier is rotated at a specified rotational speed and moved at a maximum vertical speed which will produce streams of fluid having the energy needed to remove the foreign matter from any size liner with any sized slots or perforations and which will clean each point on the liner at least once.

Abstract: A pool cleaning apparatus characterized by a long, hollow main body coupled to a pressurized swimming pool inlet and supporting a pair of cleaning hoses, a pressure relief valve, and an adjustable nozzle for producing a surface current. A primary cleaning hose sweeps the side and bottom surfaces of the pool, and a secondary cleaning hose follows up after the primary cleaning hose. The adjustable nozzle is used to direct a jet of water towards the surface of the water contained by the pool to create surface currents which urge floating debris towards the swimming pool's skimmers. The pressure relief valve controls the strength and vigor of the cleaning action of the apparatus.

Abstract: The device comprises a ramp for dislodging sludge by high pressure jets fixed permanently inside a steam generator, horizontally and above the tube plate. The ramp is supplied with water under pressure through a movable distributor. The device also includes means for driving the sludge towards the center of the plate and a discharge valve for the sludge arranged above an orifice passing through the tube plate at its central part and opening into the hollow central column. The invention is particularly useful for steam generators of pressurized water nuclear reactors.

Abstract: A device for cleaning leaves and other debris from eave troughs and similar gutters by use of water pressure. The device comprises a carrier adapted for engagement with the forward lip of an eave trough. The carrier supports a high-pressure water nozzle which is adapted to be connected to a source of water under pressure. The carrier is propelled manually by means of an elongated handle along the length of the eave trough as the water stream flushes the debris from the trough.

Abstract: A pulsating fluid nozzle is disclosed which comprises a body having an inner chamber and an outer chamber separated by a cylindrical wall. The inner chamber is supplied with fluid through a fluid outlet, and the outer chamber supplies fluid to the fluid outlets. The cylindrical wall has a port through which fluid can flow from the inner chamber to the outer chamber. A rotor is mounted for rotation in the outer chamber. The rotor has a blade extending from an annular hub which is adapted to fit around the cylindrical wall and block the flow of fluid through the port. The hub has an opening adapted to intermittently coincide with the port as the rotor turns to permit the flow of fluid through the port to produce a pulsating flow. The blade is adjacent to the opening and positioned to be contacted by a stream of fluid flowing through the port when the opening coincides with the port. The contact by the stream of fluid propels the blade to turn the rotor.

Abstract: An apparatus for flushing drain pipes is disclosed having an expansible member of resilient material insertable into the pipe to be flushed, a first valve for connecting the expansible member to a source of fluid under pressure for filling and emptying the expansible member and a second valve also connected to the source of fluid under pressure for flushing the obstruction from the pipe.

Abstract: The disclosure is directed to a rotary wall deslagger for cleaning boilers. In accordance with the invention, an extensible rack element is selectively, mechanically coupled to a rotatable lance tube of the rotary wall deslagger to move the lance tube between a working and non-working position. When the selective mechanical coupling between the rack and the lance tube is released, the rack is extensible relative to the lance tube to activate a cleaning fluid discharge means and a driving means to impart a rotary motion to the lance tube. In accordance with another feature of the invention, the selectively-operable, mechanical coupling is released after the lance tube has been moved to its working position and the cleaning fluid discharge means and the rotary drive means are activated by the rack element substantially simultaneously with one another so that the cleaning fluid reaches the discharge nozzle of the lance tube at full pressure as rotation of the lance tube begins.

Abstract: There is disclosed a device mounted for traveling movement on the edge of a rain gutter to clean it. The frame of this device may be stamped from a single sheet of metal or molded as a single piece from a plastic and has a vertical portion, to which is rigidly secured, the fixed tubular part of a rotary valve. Support rollers are carried on horizontal axes in turn carried by a vertical portion of the frame and these support rollers support the device for travel on the outer edge of a rain gutter. The frame continues to a U-shaped portion providing a horizontal frame portion. Guide rollers are mounted on vertical axes carried by the horizontal frame portion. These guide rollers are individually adjustable and support the device against lateral tipping. The fixed tubular valve part may have one nozzle or may have two nozzles connected therewith directing fluid in opposite directions in a rain gutter.

Abstract: A jet carrier assembly for cleaning well liners has a jet tool stabilized by a centralizer proximate to each of the tool's upper and lower ends. The jet tool is an elongate member having about 4 to 8 pairs of jet nozzles axially spaced therebetween, the axial spacing between alternate pairs being equal. The jet nozzles are spaced to provide a jet fluid track that covers any given point on the liner at least once but not more than twice when the member is lifted at a constant selected vertical speed and a constant selected rotational speed. The nozzles are mounted within adapters which are in turn detachably mounted to the elongate member. The adapters, which are provided in various sizes depending upon the diameter of the well liner, are interchangeable. The centralizers are capable of axial and rotational movement along mandrels attached to the upper and lower ends of the tool.

Abstract: A forward motion arresting means is added to a fluid powered lance to reduce the harmful effect of the stopping of the lance forward motion. A plug member mounted on the lance mates with a body member within the housing to prevent fluid flow and reduce the lance forward motion. Rearward motion arresting is achieved by the addition of a reservoir portion which acts as a hydraulic stop in conjunction with the lance piston.

Abstract: A device for flushing, sweeping and scooping debris, snow and ice from roof gutters avoiding the need for climbing on ladders and roofs which in its preferred embodiment includes a means for seeing into said gutters from the ground.

Abstract: A device for cleaning clogged pipes includes an elongated flexible tube, a heavy coil surrounding the flexible tube in close contact with the exterior surface thereof, and a nozzle at one end of the flexible tube. The nozzle has a plurality of perforations which are in communication with the interior of the flexible tube and which are oriented radially of the flexible tube. The device is particularly well adapted for use in a method of cleaning a clogged pipe wherein the nozzle is first forced through the material clogging the pipe, water is then discharged through the perforations in the nozzle, and the nozzle is then pulled backwards towards the material clogging the pipe while water continues to be discharged through the perforations in the nozzle.

Abstract: Disclosed is a hand-held device for removing debris from a gutter. The device is operational from a location remote from the gutter and comprises a cleaning head which is removably attached to a handle.

Abstract: An apparatus for cleaning an endoscope comprises an upper spray head which is disposed toward the central axis of a rinse vessel, and a lower spray head disposed toward the wall of the rinse vessel. A portion of an endoscope is disposed around the central axis of the rinse vessel, and the spray heads direct a cleaning liquid toward the endoscope portion from above and below in an oblique direction while rotating about the central axis. The spray heads do not have to be removed to place or remove an endoscope portion to be cleaned.

Abstract: A section of hose which can be connected to the end of a normal hose line has a pressure nozzle in the end thereof opposite the attachment end. Fitted into this pressure nozzle is a coiled wire plumbing snake member having a water channel formed in the center thereof and a bulb at the free end thereof. The snake member operates in cooperation with the water stream which passes through the center thereof and which is sprayed out through the pressure nozzle to unplug foreign matter from plumbing pipes and drain lines and to clean the inner walls of such pipes and lines.

Abstract: Apparatus for unthawing frozen water pipe including a feed tube which is advanced into the frozen pipe having a probing end formed by pliant fingers forming a tip for the feed tube. The feed tube is directed into the pipe by a tube channeling length of hose means through which the feed tube passes loosely. A static pressure of water prevents leakage of water from the tube channeling length of hose means.

Abstract: A conduit-cleaning nozzle mounted via a swivel on the front end of a high-pressure hose has a nozzle body which is elongated along and generally centered on a longitudinal axis. This body has axially tapered front and rear ends and is formed at the rear end with an axial-symmetrical liquid-distribution compartment having at least one backwardly and normally downwardly opening liquid-ejection aperture. Water supplied at high pressure to this compartment is ejected downwardly and backwardly from the aperture. The angular orientation of the aperture is established by an off-center mass which is fixed in the nozzle body and which imparts to it a center of gravity which is offset below its central symmetry axis, so that the nozzle is self-righting.

Abstract: Pipes, coated with paraffin, scale or otherwise, are cleaned by internally spraying the pipe with a conic sheet of paraffin solvent or scale remover or other fluid. The reaction of the discharge of the sheet of fluid is the propelling force for advancing the nozzle through the opening. An axial jet of fluid clears the tube in front of the nozzle so that the nozzle can advance through the tube. The conic sheet is formed by a pair of sleeves around a mandrel, the sleeves meeting with correlative conic surfaces.

Abstract: An apparatus and method for reducing interline twisting of any pair of a plurality of lines connected to a device which longitudinally traverses the interior of an elongated tubular member is disclosed. The lines are connected between the device and the tubular member exit opening through which the device may be inserted into the tubular member. The device tends to rotate about its longitudinal axis as it traverses the interior of the tubular member. The apparatus comprises a barrier guide member having a body portion mounted for rotational movement about a rotational axis. The body portion includes means for maintaining a fixed orientation of the body portion relative to the direction of pull of the earth's gravity. At least one line is connected to the body portion, for example a tow line, and at least one other line is preferably connected to the device on a side of the body portion opposite to that at which the tow line is connected.

Abstract: A lance tube for soot blowers having a steam nozzle near its end, a liquid nozzle spaced rearwardly from the steam nozzle, and a thermostatically operable valve interposed between the nozzles which closes off the steam nozzle when liquid at a temperature lower than that of steam is in the lance tube.

Abstract: A nozzle useful for cleaning deposits from the interior wall of a pipe, the nozzle including a body having a hose connection for accepting a stream of high pressure fluid and having at least three skids to hold the body away from the interior pipe surface, and a turbine connected to the body through a bearing, the body including jets to discharge high pressure fluid in a direction to propel the nozzle through the pipe being cleaned and the turbine having jets positioned to drive the turbine to rotate and to impinge against the interior wall of the pipe.

Abstract: Apparatus for jet-cleaning wells having different-diameter casing strings, which apparatus includes an elongated member for running into the well, and a movable member having a jet body for forming a jet connected to the elongated member, which movable member moves out against the casing string responsive to application of jetting liquid between the movable member and the elongated member.

Abstract: Apparatus for cleaning the interior of a tube comprises a hose which has a jet producing head at one end thereof and which is connected to a supply of pressurized water at its other end. The hose is wound on a reel which has a drive mechanism, such as a motor for rotating the reel in either direction to wind and unwind hose on the reel. The apparatus also includes a housing within which the jet producing head can be accommodated and from which the head can be ejected.

Abstract: A portable, hand-held cleaner for cleaning the box and pin ends of a joint of drill pipe using only high-pressure water. The cleaner includes a tubular housing having a plurality of spray nozzles disposed to create a swirling water jet that thoroughly cleans the threads and mating shoulders of the box and pin without requiring the use of solvents or mechanical means, such as brushes.

Abstract: Method and apparatus for the in situ, internal cleaning of a hollow, variable diameter, air and dirt evacuation duct which is coupled to a vacuum creating system. The apparatus comprises a fluid emitting member receivable in the duct for dislodging dirt and scale which might accumulate on the inside wall of the duct. Mechanism is provided for drawing the fluid emitting member through the duct including a line, coupled to the fluid emitting member, passing from the inlet to the outlet of the duct. An expansible and contractible member is received by the duct and is responsive to a differential pressure being created by the vacuum creating system to expand outwardly into intimate engagement with the internal wall of the duct and to move in a downstream direction whereby the line and fluid emitting member are moved through the duct.

Abstract: A spray head with nozzles is carried on a lance to spray high pressure fluid, such as water, to clean the interior of tubes, such as those in heat exchangers. The fluid, in addition to cleaning the interior of the tube, is used to both rotate the lance and move the lance into and out of the tube.

Abstract: A fluid delivery system is disclosed utilizing a high pressure cleaning fluid, such as a blast of high pressure water, to remove material from the inside wall of the stator of a relatively large electric motor. In the preferred embodiment of this invention illustrated, the fluid delivery system includes a nozzle carriage having a high pressure nozzle movable along the length of the inside wall of the stator to be cleaned, a rotating carriage frame for rotating the nozzle about the inside wall of the stator to be cleaned, a vertically movable wall upon which the rotating carriage frame is mounted, and a base frame or skid on which the vertically moving wall is mounted. The nozzle can be positioned to move along a desired longitudinal path along the inside of the stator, such as along longitudinal grooves where the material to be removed is located.

Abstract: The water supply line to an automatic poultry watering system is disconnected from the metering housing, and a flushing implement is attached to the free end of the supply line. The flushing implement includes an upper end attachable to the supply line approximately equal in diameter to the supply line and a relatively small nozzle member at the other or free end which is considerably reduced in both outer and inner diameter. The flow of water is thus greatly accelerated, and the implement is used to probe the inlet and into the metering housing to flush out any debris or loose material that may become lodged therein clogging up the operation of the metering housing or valve.

Abstract: A cooling method and apparatus wherein in the process of continuously hardening a metal pipe by heating the metal pipe as it passes through a heating unit and then cooling the inner surface of the metal pipe, an annular cooling nozzle having a large number of nozzle openings is placed in the metal pipe, and the spray direction of jets of cooling medium from the nozzle openings is selected so as to maintain a dip angle of between 30.degree. and 70.degree. and a transversal angle of between 30.degree. and 90.degree. and either cooling water or a mixture of cooling water and compressed air is sprayed with a jet velocity of greater than 5 meters per second onto a large number of points on the circumference of the inner wall of the metal pipe.

Abstract: A cleaner for ascension pipes is mounted onto a carriage that is movable on top of a coke oven battery alongside ascension pipes of coke oven chambers in the battery. The cleaner includes a flexible member, anchored at one end to the carriage, and carrying, at the other end, a nozzle block and nozzles. The flexible member is supported by rotatable members, pivotally mounted to the carriage, with one rotatable member being power driven. Means is provided for pivoting the arm to which the powered rotatable member is mounted.The flexible member supports a flexible fluid-carrying hose that connects to the nozzle block and that carries fluid to the nozzles mounted therein. By actuating the power driven rotatable member, the nozzle block and nozzles are reciprocable in the ascension pipes and fluid carried in the hose washes encrusted material from the inner surface of the ascension pipes.

Abstract: (1) A construction for reciprocating and rotating a lance comprising a frame, attachment structure for securing said frame relative to a tube to be cleaned, lance reciprocating and rotating mechanism on said frame substantially adjacent said tube, a carriage for attachment to the end of the lance remote from said tube, a swivel connection on the carriage for permitting rotation of the lance while high pressure water is being fed thereto, a carriage support for supporting said carriage for movement toward and away from said tube, and a mounting arrangement for mounting said carriage support.

Abstract: Apparatus for cleaning scale, sludge, rust, concrete, or other unwanted material from the interior walls of sections of pipe, the apparatus including a honing tool which is insertable and rotatable in a section of pipe clamped on a transportable primary carrier, and has at its end a cutting tool with a pair of arcuate cutting edges to provide a desirable tangential contact with the pipe, and to facilitate cleaning of slightly bent pipes. The tool also has two pairs of diametrically opposed cutting elements resiliently mounted on the tool shank and urged outwardly in a self-centering action. The tool is mounted on a shaft which is loosely journaled on a secondary carrier, to provide tool flexibility and a desirable whipping action, and the secondary carrier can be telescoped into the primary carrier for transportation purposes. A hydraulic motor for driving the tool shaft is mounted on a carriage which can be translated linearly on the secondary carrier, to advance the tool into the clamped pipe section.

Abstract: Method and apparatus for injecting foam into a pipeline. Foam is produced and delivered under pressure to the inlet of a flexible foam-conducting tube. An inflatable plug slidably encircles the tube, so that the tube can be adjusted to extend any desired distance beyond the plug. The plug can be enlarged by inflation to bear against the wall of the pipe and also against the wall of the tube, so as to prevent the foam from flowing back beyond the plug.

Abstract: Apparatus for cleaning sewer and other pipes of accumulated debris has a nozzle on one end of a tubular body and a coupling on the opposite end of the body which enables the apparatus to be connected to a flexible hose leading to a source of pressurized water. A carriage assembly supports the body coaxially within the pipe and this assembly has wheels for primary engagement with the interior of the pipe and also longitudinally extending skids intended to contact the pipe interior should the wheels encounter an obstruction. The carriage assembly is radially adjustable and the nozzle has outwardly and rearwardly directed jets which discharge cleaning and propelling streams of high-pressure water.

Abstract: A cleaning apparatus for waste shafts has a cleaning head with peripheral brushes fixed to the head, a vibrator mounted on the head vibrating the head and thereby the brushes, a lower spray head below the brushes for applying a cleaning solution, and an upper spray head above the brushes for applying an insecticide. The cleaning head is lowered down a waste shaft by a hose containing two fluid paths, each connected to a spray head, and containing electric wires connected to the vibrator. A cart containing water, soap or detergent, insecticide, and scent tanks has metering pumps delivering fluids from the tanks through a rotary fitting to the hose which is mounted on a motor driven reel to lower the head. The hose passes over a roller clamped within an opening in the shaft. The cart may contain batteries for its operation and electronic controls and recording devices.

Abstract: Apparatus for storing a recreational vehicle sewer hose assembly comprising spaced cone members affixed to a central apertured mandrel with one cone element being slidably received respective to the mandrel and to the remaining fixed cone element. The mandrel is apertured and has an inlet end which can be connected to a water supply so that the slidable cone can be removed from the mandrel, a sewer hose assembly telescopingly received in a collapsed manner about the mandrel, and the slidable cone member replaced upon the mandrel with the collapsed sewer hose being captured so that it is in stored relationship therebetween. During the above manipulation, water flows into the mandrel and through the apertures to wash any accumulation of sewage from the interior of the hose assembly. This expedient enables the entire apparatus to be subsequently drained so that the entire combination can be conveniently handled and stored in a sanitary and compact manner.

Abstract: A jet carrier assembly for cleaning well liners has a jet tool stabilized by a centralizer proximate to each of the tool's upper and lower ends. The jet tool is an elongate member having about 4 to 8 pairs of jet nozzles axially spaced therebetween, the axial spacing between alternate pairs being equal. The jet nozzles are spaced to provide a jet fluid track that covers any given point on the liner at least once but not more than twice when the member is lifted at a constant selected vertical speed and a constant selected rotational speed. The nozzles are mounted within adapters which are in turn detachably mounted to the elongate member. The adapters, which are provided in various sizes depending upon the diameter of the well liner, are interchangeable. The centralizers are capable of axial and rotational movement along mandrels attached to the upper and lower ends of the tool.