Abstract: A method and apparatus of electrically and sequentially completing an oil and/or gas well through a tubing production string in a well casing. The operation includes electrically and sequentially actuating downhole equipment such as well packers, a safety joint, well annulus safety valve, solenoid actuated tubing safety valve, blanking block valve, circulating sleeve, and receiving electrical feedback from the equipment determining the position of the downhole equipment.

Abstract: There is disclosed apparatus for use in controlling flow through a tubing string suspended and packed off within a well bore and within the annulus between the string and well bore above and below the packer by tools adapted to be lowered into and raised from landed positions within a pocket to one side of a bore through a mandrel connected as part of the tubing string for releasing the packer to be set and opening a bypass therein and for opening and closing a flapper in the bore, as well as the bypass responsive to the supply of control fluid from a remote source to the pocket.

Abstract: A pass-through zone isolation packer and process for isolating zones in a multiple-zone well. The pass-through zone isolation packer has an upper packer sub with an upper sub through hole and a lower packer sub with a lower sub through hole. A packer mandrel having a through bore is positioned through the upper sub through hole and the lower sub through hole. The upper packer sub and the lower packer sub are secured to the packer mandrel. A packer element is positioned between and is secured to the upper packer sub and the lower packer sub. Likewise, a packer bladder is positioned between the upper packer sub and the lower packer sub. The packer bladder is hermetically sealed to both the upper packer sub and the lower packer sub, so as to form a gas-tight annular gas chamber between the packer mandrel and the packer bladder. An inlet tube is used to introduce a pressurized gas through the upper packer sub and into the annular gas chamber.

Abstract: A chemical injection assembly and apparatus for treating production fluids in a bore-hole. The system includes a fixed packer having an opening passing therethrough for receiving a production tubing string, a closable orifice in the packer that is actuated by the tubing string and appropriate seals for preventing fluid transfer within the packer. When the tubing string is inserted into the packer, a collar on the tubing string engages a shiftable sleeve that places an orifice in the shifting sleeve in alignment with the orifice in the injection sleeve so that chemical treatment fluid from the surface can be forced down the bore-hole casing through the closable orifice in the packer and into the production fluid at the perforations near the producing formations. The treated fluids then enter the tail pipe of the packer and up the tubing string to the surface. When it is desired to plug the well, a plug is inserted into the tail pipe and the tubing string is withdrawn.

Abstract: A long stroke packer for use in a well bore. The packer has a housing assembly with an operating mandrel assembly disposed therein. A packer mandrel assembly is slidably connected to the housing assembly. During operation, the operating mandrel assembly may be actuated to cycle a tool below the packer without setting the packer. After the operating mandrel assembly and housing assembly are moved a predetemined amount with respect to the packer mandrel assembly, the housing assembly is brought into contact with a sliding shoe on the packer mandrel assembly which in turn engages and deforms packer elements into sealing engagement with the well bore.

Abstract: A retrievable bridge plug apparatus, and associated methods, are provided for sealing the bore of a drill pipe string to control a well that is flowing out of control.

Abstract: A wireline set and tubing retrievable bridge plug. The bridge plug includes a central mandrel portion having a plurality of J-shaped recesses thereon at an upper end and at least one shaped recess at a lower end thereof. Disposed around the central mandrel is a packer mandrel having a packer element thereon and slips disposed therearound. A ratchet assembly is provided for holding the apparatus in a set position in which the packer element sealingly engages the well bore and the slips grippingly engage the well bore. The shaped lower recess in the central mandrel is disposed below the ratchet mechanism. A packer mandrel case having a lug therein for engaging the shaped recess is disposed around the lower end of the mandrel. The slips, ratchet mechanism and J-shaped recess are all positioned below the packer element for protection from debris in the well bore. A retrieving tool attached to a tubing string is used to retrieve the bridge plug.

Abstract: A wire-line controlled down-hole shut-in tool for wells incorporates a mandrel adapted for connection in a tubing string. A shut-in valve mechanism within the mandrel is opened and maintained in its open position by a sectioned flow tube assembly and is permitted to close upon linear retraction of the flow tube thus causing temporary shut-in of the well such as for purposes of inspecting formation pressure. The shut-in tool mechanism incorporates a pressure equalization system which is controlled by downward linear movement of the flow tube assembly for establishing a pressure balanced condition at the shut-in valve to permit opening of the valve without excessive force. Pressure balancing with the shut-in valve in its closed position is achieved by control of pressure equalization valves in response to actuation of a lost-motion connection between upper and lower sections of the elongated flow tube assembly.

Abstract: A packer type bridge plug for use in wells which may be set upon a wireline and retrieved upon a tubing string. The retrieval of the bridge plug is facilitated by the positive retraction of the upper and lower wedge members from beneath the slips during the retrieval process.

Abstract: A packer type bridge plug for use in wells which may be set upon a wireline and retrieved upon a tubing string.

Abstract: There is disclosed a subsurface well completion system comprising body means having a bore therethrough adapted to be connected in axial alignment with a tubing string suspended within a well bore, and a packer carried by the body means for closing off the annulus above a production zone of the well. Flow through each of the bore of the body means and a passageway within the body means which bypasses the packer to connect the annulus above and below the packer is controlled by safety valves having pressure responsive operators for moving such valves from normally closed to open positions by means of control fluid which is supplied thereto through a control line from a remote source. Upon loss of control fluid, as, for example, due to loss of the control line, the valves automatically close.

Abstract: A well test apparatus in which a by-pass sleeve valve lands in a previously set packer. A lock mandrel assembly lands in the sleeve valve and carries a transducer fitting. A transducer is releasably carried in the fitting. Well conditions such as pressure may be sensed by the transducer and recorded or transmitted to the surface. By manipulation of casing pressure, the by-pass valve may be opened and closed to flow the well at high production rates with the transducer in place.

Abstract: A flow control and safety valve for oil wells where control of flow in the casing annulus is accomplished with a wire-line retrievable device. A basic valve structure provides for control of flow in the casing annulus by means of a control line to the surface. A number of additional functions can be added to the basic valve structure to accomplish control of flow through the tubing string and can accommodate control of dual and triple zone recovery. These additional functions are accomplished by landing additional wire-line retrievable valves within the basic structure whereby independent control of the annulus and tubing string flows is possible, at the same time affording increased flow diameters for a greater volume of production in a given casing size.

Abstract: A seal assembly for a bypass valve in a well tool such as a packer has a tubular seal carrier with a pair of annular seal elements mounted in a longitudinally spaced relation about the outer periphery thereof. The annular seal elements are anchored in separate grooves around the exterior of the seal carrier such that they are prevented from being dislodged by fluid pressure. Another seal can be provided around the interior of the seal carrier to seal between this seal carrier and a well tool or packer mandrel.

Abstract: A seal assembly for a bypass valve in a well packer has a tubular seal carrier with a pair of annular seal elements mounted in a longitudinally spaced relation about the inner periphery thereof. The annular seal elements are anchored in separate inwardly flared grooves around the interior of the seal carrier in such that they are prevented from being dislodged by fluid pressure. An outer seal element is mounted around the outer periphery of the seal carrier to seal between the seal carrier and a bypass valve housing of the well packer.

Abstract: Apparatus is run on tubing string for pressure surging operations. Fluid is in the annular area between the tubing string and the well bore and fluid is also within the tubing string with a packer separating the annulus fluid from the tubing fluid. A first valve body contains means for connecting the valve body to the tubing string and has flapper valve head means normally blocking fluid flow through the first valve body. A valve seat is carried on the first valve body. A first piston is responsive to pressurization of the annulus fluid to shift the flapper valve head away from the seat to allow fluid flow through the first valve body. Locking means are carried on the first valve body to prevent longitudinal shifting of the first piston in at least one direction after the piston is shifted to open the first valve. A second valve body is responsive to tubing pressure and contains first lock means for locking a seal means therein to isolate the central bore.

Abstract: A well packer and service seal unit for setting the packer in a well bore and depositing a gravel or slurry pack within the well bore. The packer includes a tubular mandrel connectible with a tubing handling string and adapted to support a gravel pack sand screen below the packer, a setting sleeve, top slips, bottom slips, internal slips, and seal elements supported on the mandrel for holding the packer in a well casing against a pressure differential in either direction and sealing with the casing to isolate a producing zone in the well bore. The service seal unit is insertable into the packer for supporting the packer as it is lowered in the well bore, setting the packer, and directing fluid flow to place the gravel or slurry pack in the well bore around the screen below the packer seal elements.

Abstract: A seal assembly for a valve in a mechanical setting retrievable and pressure balanced packer has a valve seal mounted on a bushing mounted around a mandrel joined to an anchor and enclosed within a balance chamber housing. The valve seal is retained between the bushing and an overlapping coaxial face seal retainer such that only a relatively small portion of the face seal ring will contact the seal surface of a valve seat on the packer.

Abstract: A collar lock and seal assembly for releasably locking a well tool such as a pump in a well flow conductor, such as casing or tubing, and sealing with the flow conductor around the assembly to restrict flow to a path into the pump. The assembly has an annular support surface engageable with a no-go shoulder in the flow conductor, radially movable locking keys for expansion into a locking recess in the flow conductor above the no-go shoulder, a longitudinally operable bypass valve, and interference fit annular seals. First shear pins hold the assembly unlocked while running in and second shear pins are activated to lock the assembly at operating position. The seals and connected parts are coupled to resist rotation by the pump when locked in a well casing. In operation the assembly is coupled in a tool train including an electric well pump, valves, and related structure. The tool train is lowered on a cable in a well casing until the flow conductor no-go shoulder is engaged.

Abstract: A test plug for use in pressure testing a Christmas tree and blowout preventer atop an oil or gas wellhead. The test plug includes a cylindrical body having an outer diameter slightly smaller than the bore of the wellhead, and a plurality of support dogs that fit into an annular groove in the wellhead to support the plug during pressure testing. The plug is landed on a relatively narrow shoulder in the bore of the wellhead and the dogs are then extended into the groove by vertical movement of a mandrel, thereby lifting the plug off the shoulder and securely supporting it in test position.

Abstract: A method and apparatus for use in controlling a well during drilling operations is disclosed. The method includes actuating a downhole packer and providing for flow in a controlled manner past the packer. The apparatus includes a packer and means for controlling flow past the packer. This abstract is neither intended to define the scope of the invention which, of course, is defined in the claims, nor is it intended to be limiting in anyway.

Abstract: A method and apparatus for use in controlling a well during drilling operations is disclosed. The method includes actuating a downhole packer and providing for flow in a controlled manner past the packer. The apparatus includes a packer and means for controlling flow past the packer. This abstract is neither intended to define the scope of the invention which, of course, is defined in the claims, nor is it intended to be limiting in anyway.

Abstract: Disclosed is a safety system to control flow within a well which includes an annulus safety valve to control flow in the annulus between concentric well pipe and which may include a tubing safety valve to control flow in the inner pipe.

Abstract: Apparatus is provided for affording transmission of liquid or gas inhibitor within and below the bore of a well packer during production of hydrocarbons in a subterranean well.

Abstract: A blowout preventer test plug for use in pressure testing a blowout preventer, the plug comprising a first body having fluid passage ports positioned therethrough and a second body having fluid passage ports positioned therethrough positioned on a tubular extension below the first body so that when the first and second bodies are moved into mating contact the fluid passage ports are closed and a seal is urged into sealing contact between a tubular extension of the first body and the inner diameter of a wellhead bore in which the plug is positioned.