Abstract: A fluid flow control apparatus, shifting tool and method for oil and gas wells in which a sliding sleeve valve is connected in a string of well tubing in a wellbore casing. The sliding sleeve valve functions to selectively control fluid communication between the well tubing and the wellbore casing. A shifting tool is provided for opening and closing the sliding sleeve valve and is connected to reeled tubing for receiving a fluid. The shifting tool includes a nozzle for discharging the fluid into the well tubing during or after the valve shifting operation.

Abstract: A method and apparatus for running wireline and reeled tubing into a wellbore in which an adapter tube extends through the reeled tubing injector to enable the wireline rig to be mounted on the reeled tubing rig. A stuffing box is also provided which can easily be converted to accommodate wireline or to accommodate reeled tubing.

Abstract: A clean-out tool system for use with a oil well production tubing extending downward through a casing terminating in a production zone in the well bore, which zone is isolated by a packer and includes flow restricting debris to be cleaned out. A generally vertical, elongated, cylindrical tool body, having a relatively small diameter and a bore therein, is located down through the inner production tubing into the zone located at the end of a tubing string extending downward through the production tubing for communicating fluid pressure to the bore in the body. Four, peripherally spaced, elongated slots extend radially inward into the body with their longitudinal axes aligned with the longitudinal axis of the body and communicate with the bore is the body. An elongated blade is pivotally attached in each slot to the body, movable from a first configuration wherein the blade is positioned vertically within the slot, and a second, expanded configuration positioned radially outward in the zone.

Abstract: A perforating gun and method permit a casing or liner within a well to be perforated even within a section obstructed by sand either before or after perforation. The perforating gun comprises a support for carrying a plurality of explosive charges and one or more channels for conducting a fluid through the support, which channels are spaced from where the plurality of explosive charges are carried on the support. A method of perforating a well comprises: lowering a perforating gun into the well; flowing fluid through the perforating gun before or after the perforating gun is detonated; and detonating the perforating gun.

Abstract: A method and apparatus for hanging off a coiled tubing velocity string in an existing, active gas production well. The method allows for the "hot" tapping into a charged coiled tubing run thereby eliminating the need for an end plug and blow out equipment on site. A sealed cutter assembly is connected to the hangoff assembly, the charged coiled tube is cut, and back pressure leakage is avoided by the use of a hangoff head which seals in two directions. The cutter assembly is removed and the coiled tubing velocity string is piped to a new sales line.

Abstract: A wire line cable in which composite rods are spaced apart and axially disposed between a flexible, elongated, membrane which can be pressurized and a flexible outer protective sheath surrounding but separate from the membrane.

Abstract: A snubbing unit, used to raise or lower a collar-connected series of tubing joints through a riser spool communicating with a well bore, is provided with an electromagnetic sensing system operative to detect and indicate the entry into, position within and travel direction within a sensing spool between the upper and lower blowout preventers of each tubing collar. The sensing system includes upper and lower electomagnetic coils coaxially circumscribing the sensing spool, and a frequency generator for energizing the coils. First and second phase comparators are used to detect current phase alterations in the coils, caused by variations in the vertical proximity between each collar and the coils, and responsively transmit output signals indicative such phase alterations. The output signals are sent to a position sensing circuit which utilizes them to illuminate collar position and travel direction lights on an operator control panel.

Abstract: A portable pump removal equipment is provided which includes a collar to be secured to the upper end of a well casing, a pair of arms extending outwardly and upwardly from the collar with a wheel rotatably mounted on the outer ends of the pair of arms. A V-shaped guideway is mounted around the periphery of the wheel which releasably engages pipe pulled from the well casing. A latching mechanism on the wheel permits rotation of the wheel in a direction to withdraw the pipe and the pump from the well casing. Rollers mounted on horizontally extending axes on the upper surface of the collar permit the pipe to be withdrawn from the casing without engaging the casing wall.

Abstract: A method and apparatus are disclosed which enable one to manipulate a tubular string within a wellbore or the like to cause the area of largest standoff between the tubing and the wellbore to be moved radially at least part way around the circumference of the wellbore without the need for any axial movement of the tubular string or any device attached thereto. The method and apparatus are particularly useful for obtaining circumferentially complete distribution of cement around a tubular string in a wellbore.

Abstract: A method and apparatus of stimulating a well having a hydraulic pump seated in an internal shoulder in the production tubing for pumping fluid through a fluid port to the annulus between the tubing and casing. The method includes removing the pump but leaving the production tubing in place. A coil tubing having a fluid injector is lowered into the production tubing and sealingly seated on to the shoulder. The injector is maintained on the seat and the packer is maintained in place by pressuring fluid on to the top of the seated injector and the packer. An inflatable packer may be provided on the coil tubing for anchoring the coil tubing in place.

Abstract: Device combinations and methods for wellbore operations for simplifying production methods and workover operations and for production from a failed secondary zone. Using a commercially available prior art coil tubing unit, a coil tubing string is run into an already-in-place production tubing string. The coil tubing string has a commercially available prior art sand control device at the bottom, a portion of blank pipe and a commercially available prior art releasable hydraulic running and release tool ("hrart"). A commercially available prior art small washpipe is connected to the hrart. Wash fluid flows through the hrart, to the wash pipe, and then out of the washpipe thereby washing the sand control device into place in filter media at the perforated production zone. An isolation packer or packers are set between the production tubing and coil tubing string.

Abstract: A process including the initial step of lowering a length of coil tubing down through the internal production bore, so that the end of the tubing which is at the depth of the preforations in the external casing, and a volume of fluid such as water is washed into the hole so that sand contained within the hole is washed out of the hole up through the annulus between the internal casing and the coil tubing. The coil tubing is then removed from the hole, and a second length of coil tubing is lowered into the hole with a blunt bottom gauge ring sub to approximately the same depth, and a quantity of ceramic beads are "squeezed" into the well bore so that the beads enter through the perforated tunnels and fill a zone exterior to the tunnels in the sand formation around the perforations.

Abstract: A drill rod apparatus for quick rotary deep drilling has its drill pipes connected by flexible joints so that the rotation of a nut relative to a housing of each joint permits separation of the pipe ends connected thereby and the arrays of interengageable claws. The housing is connected to one of the pipes by a ball and socket joint so that with such separation, while a seal is maintained between the interiors of the two pipes, one pipe can be angularly offset from the other by substantially as much as 30.degree..

Abstract: Multiple wellbores may be extended from a common, generally vertical wellbore and completed for conduction of fluids between said common wellbore and each of said wells by drilling the common wellbore, inserting a seal bore into the common wellbore below the junction of a deviated well with said common wellbore, inserting a whipstock and then drilling the deviated well. The whipstock is removed and a guide member is inserted into the common wellbore and secured to the anchor member. A dual packer is inserted in the common wellbore above the junction of the deviated well and is connected to the guide member to provide a slow passage into the wellbore located below the junction. A second tubing guide connector member is inserted into the common wellbore with a tubing string extending downwardly therefrom.

Abstract: An electrode well extending into a subterranean formation containing viscous hydrocarbons comprising a plurality of electrode tubes which are formed by extension of an elongated tube from the surface above the formation using a coiled tube injection unit or lowering the tubes on drill pipe, diverting the tubes radially outwardly from the wellbore into the formation and penetrating the formation with the electrode tubes using hydraulic jetting action by pumping fluid through the tubes during the insertion process. The tubes are installed axially spaced apart using respective tube guide members which are inserted into the wellbore and operate to form a curved path for diverting the tubes into the formation during the insertion process and for supporting the end of the tube after its insertion into the wellbore.

Abstract: A system for controlling the deviation of the path of oil or gas well conductor casing at a desired angle, curvature and orientation in the sea bottom stratum through which it is driven from an offshore platform involving the use of conductor guide(s) equipped with longitudinally disposed anti-twist bar(s) fixedly mounted thereon to prevent or arrest any twisting motion along the longitudinal axis of the casing sections which have like, anti-twist bar as the conductor sections are being lowered or driven down from the platform. Motion is arrested by means of the bars on the conductor guide(s) contacting the similar bars fixedly attached to the casing sections being driven through the conductor guides on the platform support structure. By arresting any twisting motion at this relatively elevated point, any undesired twist is minimized in the driven casing sections minimizing any undesired horizontal deviation in the enplacement of the conductor casing which would have otherwise been caused by the twisting.

Abstract: A tubing suspension system for undersea well production operations employs a nonoriented tubing hanger having an inner body for supporting a tubing string and a landing collar for supporting the tubing hanger on a wellhead casing. The tubing hanger includes three cooperating concentric sleeve assemblies which are employed to lock and seal the tubing hanger to the wellhead housing. The outer sleeve assembly includes a locking actuator and a dual seal assembly and is separately retrievable from the remainder of the hanger assembly. A nonorienting hydraulic set running tool is employed to run the tubing hanger, set the seals, lock the tubing hanger to the wellhead casing, retrieve either the outer sleeve assembly or the entire tubing hanger. The running tool includes a hydraulically controlled actuating sleeve which carries a latch dog assembly which locks with the tubing hanger.

Abstract: Improved coil tubing injection apparatus for servicing wells by running coil tubing thereinto for circulating fluids through the well and having the ability to rotate the coil tubing for performing drilling operations. The apparatus can readily provide concurrent longitudinal and rotational movement of the coil tubing. Methods of servicing wells involving such movement of coil tubing are disclosed.