| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 241 | Hydraulic wireline cutter | US10175017 | 2002-06-18 | US20020152856A1 | 2002-10-24 | Kenneth A. Brumley; John P. Davis; Gregory L. Hern; David B. Haughton |
| A combination tool for attaching to a stuck wireline tool, then cutting the wireline just above the stuck tool with a hydraulically driven cutter, allowing the wireline to be pulled out of the hole before fishing out the stuck tool. A side door can be provided on the work string, to allow rerouting of the wireline outside the work string, after which the stuck tool can be unstuck and repositioned within the well bore for completion of the downhole operation of the tool, prior to cutting the wireline free from the downhole tool. | ||||||
| 242 | Subsea dual in-line ball valves | US138687 | 1998-08-24 | US6152229A | 2000-11-28 | Charles E. Jennings |
| A dual in-line ball valve assembly for a subsea tree intervention tool has a pair of axially-movable pistons and a rotatable linkage member pinned between each of the pistons and the independently operable ball valves. The linkage members have eccentric hubs which rotate the ball valves between open and closed positions when the pistons are axially actuated. A recess is formed in each ball valve adjacent to the central flow passage of the assembly for accommodating a lower side of tubing or wireline. The recesses prevent shearing of the tubing or wireline in two places when one of the valves moves to the closed position. | ||||||
| 243 | Shearing gate valve | US521677 | 1995-08-31 | US5803431A | 1998-09-08 | Loc Gia Hoang; Brian Haynes |
| The shearing gate valve includes a gate reciprocably mounted between opposing seat rings. The gate has an opening which aligns with bores in the mating seat rings. The opening in the gate and the bores of the seat rings each have a cutting recess. The cutting recess in each mouth of the opening of the gate is formed by a counterbore which is filled with a weld overlay material that bonds with the material of the gate. A layer of hard facing material covers the sides of the gate and also extends over the bond formed between the gate and weld overlay material but does not completely cover the weld overlay material thus forming the cutting recess. The cutting recess has a depth equal to the thickness of the hard facing material. The weld overlay material is hard so as to prevent the formation of an upset which will score or gall the sealing surfaces between the gate and seat rings. | ||||||
| 244 | Wire cutting valve actuator | US585721 | 1990-09-19 | US5178360A | 1993-01-12 | Terry G. Young |
| The invention is a valve actuator or a booster module for an existing valve actuator that provides an incremental force to the valve stem at a position close to valve closure. The force is stored in a spring which is held in the compressed position by a collet. Upon sufficient movement of the valve actuator stem in the direction towards valve closure, the collet which had previously held the spring in a compressed position is freed to move to allow the spring to expand against the collet. Since movement of the collet has caused it to be engaged to the valve actuator stem, the spring forces are transmitted directly to the valve actuator stem via the collet. The spring is oriented in a direction substantially parallel to the valve stem so that substantially all of its retained energy is transmitted directly to the valve stem through the collet. | ||||||
| 245 | Valve | US310697 | 1989-02-15 | US5050839A | 1991-09-24 | Rennie L. Dickson; Craig W. Godfrey; Kenneth L. Schwendemann; Timothy J. Noack |
| A valve employing a coupling disk to rotate the valve member so that rotative force is applied to the valve member in a direction away from the seat during opening of the valve and/or in a direction toward the seat during closing of the valve. Closing force is provided by a spring in a dome chamber and a gas charge in the dome chamber. A float valve controls fluid entry into the dome chamber to trap the gas charge therein while permitting the introduction of liquid from a balance-closure assist line to increase the pressure of the gas charge and assist in closing the valve member. | ||||||
| 246 | Oil field cable abrading system | US935589 | 1986-11-26 | US4817725A | 1989-04-04 | Robert L. Jenkins |
| A down-hole oil field cable abrader having an elongated abrading head pivotally connected at one of its ends to a body attachable to a tubing string. An abrading portion extends axially along the abrading head from its pivotal connection and includes a plurality of abrading elements, similar to the cutting elements on a drill bit, spiralling axially about the abrading head ending in a taper to an area distal to its pivotal connection. The body includes an open interior communicating with an interior of the string and a piston slidably disposed in its open interior for longitudinal movement within the body under the pressure of a fluid in the interior of the tubing string to a position in which a cam ear included with the abrading head and which is positioned to be engaged by the piston may translate the force from the pressure of the fluid, as the pressure moves the piston, into a radial force to bias the abrading head radially outward to a position suitable for cyclically contacting and abrading a cable located down-hole outside the tubing string and alongside the abrading head. In use the abrading head is continuously rotated, causing the cable to become spirally wrapped at least partially around the abrading elements and dragged along the abrading elements, cyclically abrading the cable as the abrading head rotates, until the cable is ultimately severed after a sufficient number of passes have occurred. | ||||||
| 247 | Method and device for conveying chemicals through borehole | US926675 | 1986-11-04 | US4706753A | 1987-11-17 | Katsutoshi Ohkochi; Mamoru Shinozaki; Toshiyuki Ohshita; Masayasu Kitano; Seizo Kamata |
| A capsule for conveying chemicals through a borehole for stopping lost circulation has a fragile bottom plate. A weight for destroying the bottom plate is suspended above the capsule by a cord which extends over knife edges. A messenger for cutting the cord is mounted to a wire line. The weight is caused to collide with the messenger to cut the cord, for breaking the bottom plate. Thus, the chemicals are diffused. | ||||||
| 248 | Equipment for a pipe string such as a drill-pipe string, comprising a side entry connection for passing a cable | US862633 | 1986-05-13 | US4660635A | 1987-04-28 | Christian Wittrisch |
| A side-entry connection for incorporation in pipe strings, such as a drill-pipe string, and for sealingly passing a cable from the inside to the outside of the pipe string is disclosed. The side-entry connection comprises a connection sub and a sleeve which is slidable inside the axial bore of the connection sub between a top position above said cable entry and a low position in which the sleeve closes said cable entry. Means are provided for retaining the sleeve in each of said positions, and the sleeve includes cutting means at its lower end for severing the cable when the sleeve is moved to its lower position. A retrievable plug is used to close the top of the sleeve and hydraulic pressure is applied to the plug from the surface so as to move the sleeve from its top position to its low position for closing the side entry and for severing the cable. | ||||||
| 249 | Valve actuator with auxiliary energy storage means | US882872 | 1986-07-07 | US4651970A | 1987-03-24 | David R. Sadler |
| A fluid-powered actuator assembly 10 for gate valves 13 having a slab gate 21 with a port 22 adapted to be placed in registry with the flow passage through the valve wherein the valve is moved to open position by application of fluid pressure to the actuator piston 18 and moved to closed position by a piston return spring 33 when the pressure is removed. The assembly includes an auxiliary energy storage device 40 in the form of a coiled spring 41 which is compressed in the initial stages of the actuator stroke to open the valve 13 and is maintained in the compressed energized state by a releasable latch mechanism 52 which latches to the auxiliary spring housing 42. When the actuator 12 operates to close the valve, the auxiliary coiled spring 41 is released near the end of the valve-closing stroke to provide additional axial thrust to the actuator shaft 17 and the valve gate 21 of a magnitude sufficient to shear wire lines 25 or other members which have been inserted through the gate port. The auxiliary energy storage device 40 may be packaged as a cartridge and universally mounted on various sizes and models of piston-type actuators. | ||||||
| 250 | Safety valve in particular for closing an oil well | US842053 | 1986-03-17 | US4651828A | 1987-03-24 | Bernard Doremus |
| A ball element pivotally mounted on a sleeve that slides within the tubular valve member of a well safety valve has a radial slot extending across its width parallel to and offset from its pivotal axis. A bar extending in secant fashion across the valve member engages the slot, rotating the ball element to open and close the valve as the sleeve slides back and forth. An unslotted outer surface portion of the ball element mates with the valve seat during valve closing. | ||||||
| 251 | Wire line cutter apparatus | US335832 | 1981-12-30 | US4427059A | 1984-01-24 | Eric J. Olivier |
| A wire line cutter that is slidably engaged upon a wire line tool. The apparatus includes a blade that will, upon impact with the wire line tool, slide from a generally vertical orientation to a generally horizontal orientation. | ||||||
| 252 | Well tools | US904431 | 1978-05-10 | US4160478A | 1979-07-10 | Michael B. Calhoun; John V. Fredd |
| A well tool for inclusion in a tubing string of a well adapted to perform multiple functions including controlling fluid flow through the tubing string and/or cutting coiled tubing or wire line used in the tubing string for performing well completion and workover functions. The tool includes a tubular body connectible in a tubing string and having a flow passage therethrough, a spherical seat surface around the flow passage developed on an eccentrically positioned center relative to the axis of the flow passage, an operator member which may function as a cutter, a valve, or a combination cutter and valve having a spherical surface engageable with the seat surface and mounted on an axis of rotation eccentrically positioned relative to the axis of the flow passage and coincident with the center of the spherical seat surface, an actuator movable longitudinally in the housing and engageable with a surface of the operator member spaced from the axis of rotation of the operator member to rotate the operator member from a first opened position to a second closed position, and return apparatus for rotating the operator member back from the second closed to the first opened position. An annular hydraulically operable piston is provided in the housing to move the actuator. The operator member is a spherical segment formed on a radius which is larger than the radius of the bore through the housing so that by pivoting the operator member eccentrically within the housing maximum torque is generated in the operator member by application of force at a substantial distance from the axis of rotation of the member by the actuator. | ||||||
| 253 | Quick disengaging valve actuator | US801507 | 1977-05-31 | US4135547A | 1979-01-23 | Neil H. Akkerman; Stephen R. Foster |
| An actuator is provided which is respondable to control fluid pressure for moving an operative means of a valve between open and closed positions. The actuator comprises a housing defining a cylindrical bore therewithin. In one form, a shaft is carried in the housing and is engagable with the operative means. Means define first and second effective piston areas and are carried by one of the shaft and the housing and are sealingly slidable along the other of the shaft and the housing, being longitudinally movable within the cylindrical bore. The apparatus has first and second fluid chambers companionly associated with the means defining the first and second effective piston areas within the bore for yielding a differential force across the means defining the first and second effective piston areas upon increase of fluid control pressure within the actuator. A continuously chargeable fluid accumulator means is in fluid communication with the second fluid chamber for storage of energy defined by fluid, preferably control fluid, compressible therein. Fluid passage means for transmitting fluid under pressure is provided to said first fluid chamber and to said accumulator means. Valve means ae movable between open and closed positions and communicate between the accumulator means and the fluid passage means to permit fluid control pressure changing of the accumulator chamber when the valve is in the open position and for preventing discharge of fluid pressure within the accumulator chamber when the valve is in the closed position. The valve is responsive to pressure differential between the accumulator chamber and the fluid passage means. The shaft is selectively shiftable longitudinally in a first direction to move the operative means to one of open and closed position by variation in fluid control pressure, and is shiftable to a second direction to move the operative means to the other of the open and closed positions upon subsequent variation in fluid control pressure. One of the shaft and operative means has slotted means thereon for transverse receipt of a companion engagement means on the other of the shaft and the operative means whereby the operative means and the shaft are thereafter in substantial longitudinal engagement point. The shaft and the operative means are disengageable by relative transverse shifting of the shaft and the operative means to remove the actuator from the valve. | ||||||
| 254 | Subsea control valve apparatus | US462829 | 1974-04-22 | US3967647A | 1976-07-06 | David E. Young |
| A control valve apparatus adapted to be positioned within a subsea blowout preventer stack for controlling the flow of fluid from an offshore well includes a control unit releasably latched to a valve body having tandem, normally closed valve assemblies, the upper valve assembly including a flapper valve element and the lower valve assembly including a ball valve element. The control unit has hydraulically operable mechanisms adapted to open the valve elements in response to pressurization of control lines extending upwardly to the surface, and to assist in closure of the ball valve element to effect cutting of wireline or cable extending into the well in case of emergency. | ||||||
| 255 | Subsea control valve apparatus | US462824 | 1974-04-22 | US3955623A | 1976-05-11 | James T. Aumann |
| A control valve apparatus adapted to be stationed in a subsea blowout preventer stack and used in connection with a production or drill stem test of an offshore well from a floating vessel, includes a valve section and a control section that are releasably connected together by a latch mechanism. The valve section has one or more fail-close valves for controlling the opening of the well, and the control section and latch mechanism are hydraulically operable for respectively actuating the valves and disconnecting the control section to enable its retrieval to the vessel leaving the valve section in place. | ||||||
| 256 | Hydrostatically powered messenger style wire cutter | US3662634D | 1970-12-18 | US3662634A | 1972-05-16 | BURKE JOHN C |
| A hydrostatically actuated messenger type wire cutter for severing wire below the surface of a body of water consisting of a slide having an assembly for actuating a cutting tool to sever or weaken the wire at a preselected depth. A rupture disk collapses at the preselected depth, permitting water pressure to react against a piston carrying the cutting edge.
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| 257 | Diving method and apparatus | US57065866 | 1966-08-05 | US3408822A | 1968-11-05 | CHATE FREDERICK J; KAPTEYN STEVEN A T |
| 258 | Rope knife | US51313931 | 1931-02-03 | US1867033A | 1932-07-12 | SPANG FERDINAND J |
| 259 | Jar-up rope knife | US38300829 | 1929-08-02 | US1855853A | 1932-04-26 | GALLMAN CHARLES E; JACK HARSHAW; HAIRE FRANK S |
| 260 | Rope knife and rope-serving device | US47692021 | 1921-06-11 | US1596608A | 1926-08-17 | GALLMAN CHARLES E; HARSHAW JACK; HAIRE FRANK S |
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