| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Shearing gate valve | US473359 | 1990-02-01 | US4997162A | 1991-03-05 | Gerald S. Baker; Loc G. Hoang |
| A shearing type of gate valve having a sleeve of hard wear resistant material in the opening through the gate and coating with insert rings of hard, wear resistant material in the seat rings for shearing a wire line or tubular member extending through the valve and the gate, the sleeve and insert ring being assembled with the gate and the seat rings in a manner to provide sufficient compression preload thereon so that they are not subjected to tension loads which avoids chipping, breaking or other damage to the sleeve and the insert rings. Preferably the sleeve and insert rings are of tungsten carbide. In two modified form of the present invention an insert sleeve of hardened, wear resistant material is provided in the opening of the gate and an insert ring of hardened, wear resistant material is provided in one of the seat rings so that only a single shearing of the cable element is provided so that the short section is not created in the shearing and left in the opening through the gate while it is closed. | ||||||
| 82 | Shearing gate valve | US384823 | 1989-07-21 | US4911410A | 1990-03-27 | Gerald S. Baker |
| A shearing type of gate valve having a sleeve of hard wear resistant material in the opening through the gate and coacting with insert rings of hard, wear resistant material in the seat rings for shearing a wire line or tubular member extending through the valve and the gate, the sleeve and insert ring being assembled with the gate and the seat rings in a manner to provide sufficient compression preload thereon so that they are not subjected to tension loads which avoids chipping, breaking or other damage to the sleeve and the insert rings. Preferably the sleeve and insert rings are of tungsten carbide. | ||||||
| 83 | Rotatable ball valve apparatus and method | US886649 | 1986-07-18 | US4703807A | 1987-11-03 | Harry Weston |
| A safety valve and method is disclosed having a housing in which a rotatable valve is disposed between upper and lower passages and lateral outlets. The ball has a removable insert such that in one position of the ball, the insert can be removed to provide full bore access in line with the well. The housing may be incorporated with the tubing head or may be attached to the top of the tubing head. During insertion of or workover of tubing, a blowout preventer may be attached to the top of the valve housing. The ball may be rotated for closing off the flow path from the well below. A Christmas tree may be installed after the blowout preventer is removed.Diverter valves may be connected to the lateral outlets. Passages in the ball insert may be aligned with the lateral outlets and the tubing to divert well fluid when desired via the diverter valves.The valve may be used as a master valve of a Christmas tree with a control valve attached to the lateral outlet.This abstract of the disclosure is neither intended to define the scope of the invention, which is measured by the claims, nor is it intended to limit the invention in any way. | ||||||
| 84 | Well apparatus | US814397 | 1985-12-30 | US4685521A | 1987-08-11 | George M. Raulins |
| Apparatus is disclosed for use in testing a formation of and/or performing remedial work within a subsea well by means of a pipe string which is lowered through a conductor depending from a drilling vessel at the water surface and releasably connected at its lower end to a blowout preventer stack mounted on the head of the well. The string is landed within the wellhead for depending from the wellhead into the well bore, and a so called subsea test tree connected as part of the pipe string has means therein adapted to open and close the string in response to the supply and exhaust of control fluid from a source at the surface, whereby the well may be controlled upon closing the string and raising of the upper end of the string above the tree and closing of the blowout preventer thereabove. A lubricator valve connected as part of the upper end of the string near its connection to the test tree has rams therein which not only permit the string to be opened and closed, but also enable the annular space about a line in the bore of the valve to be closed and/or the line to be sheared in the event of emergency conditions. | ||||||
| 85 | Actuator module for wireline cutting safety valve | US836154 | 1977-09-23 | US4199131A | 1980-04-22 | Israel Boski; Karl N. Tunstall; M. L. Warren |
| A portable add-on actuator module for use with a wireline cutting surface safety valve to provide supplemental energy for closing and simultaneously cutting a wireline extending through the surface safety valve in the event of an emergency. The unit includes a spring loaded locking collet assembly arranged to engage a locking recess within the stem of a surface safety valve so that the spring force may be added to normal valve closing forces such as line pressure and valve stem springs to supplement such forces for insuring the cutting by the surface valve member of a wireline extending through the member. The actuator module has a body which rests on the safety valve body without the use of any connecting structure. The module also includes structure for hydraulically compressing the spring for connecting the module on a safety valve and for hydraulically shifting the latching collet assembly to a disengaging condition for releasing the module from a safety valve. | ||||||
| 86 | Subsea master valve apparatus | US669128 | 1976-03-22 | US4009753A | 1977-03-01 | Howard L. McGill; Ervin Randermann, Jr.; Olgierd J. Musik |
| 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 ball valve element provided with the capability of cutting coil tubing typically employed in well workover and completion operations. The ball element has a cutting edge that coacts with the valve seat to shear the tubing, and a relief slot that receives the tubing during cutting to prevent the tubing from being placed in double shear. Hydraulically operable means is provided to assist in closure of the ball valve element and consequent cutting of tubing extending into the well, in case of emergency. | ||||||
| 87 | Line cutting devices | US50718374 | 1974-09-19 | US3926252A | 1975-12-16 | RIBEYRE JEAN-PAUL; MARTY CLAUDE |
| A cutting device adapted to cut flexible line such as cable or wireline in a well includes an elongated tubular body having an axial channel arranged to receive the cable to be cut, a fixed blade member and a rotatable blade member each having a cutting edge located on respective opposite sides of the channel, and an actuating member movable in the body and engageable with the rotatable blade member to cause rotation thereof in response to the application of longitudinal force, said blade members each having arcuate cutting edges initially surrounding half-sections of the cable. Movement of said actuating member and said rotatable blade member causes a locking wedge to grip the cable above the cut so that the device can be removed from the well with the cable.
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| 88 | Removable subsea production test valve assembly | US35433473 | 1973-04-25 | US3870101A | 1975-03-11 | HELMUS SYDNEY S |
| A test valve assembly is adapted to be incorporated in a tubing or drill pipe string lowered from a drilling vessel or platform to dispose the lower portion of the string in an underwater or subsea well bore, and the test valve assembly in a subsea blowout preventer stack which is suitably actuated to close around the assembly. The assembly includes one or more lower ball valves pressure actuated to open position from the vessel or platform to permit well testing, and also an upper latch mechanism releasably secured to the valve portion of the assembly. Relieving of the pressure effects closing of the one or more valves, permitting the latch mechanism to be released and removed with the upper portion of the tubing or drill pipe string to the vessel or platform. A blind ram of the blowout preventer stack can be closed above the lower portion of the test valve assembly. The pistons controlling the valves are pressure balanced, the valves being adapted to permit reverse flow around them when in closed condition. The assembly further embodies a pressure actuated piston capable of forcing a lower ball valve to closed position, and, in so doing, cutting a wire line which may have parted above the assembly, and which would otherwise hold the ball valve open.
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| 89 | Automatic shut-off valve system | US3747618D | 1971-08-13 | US3747618A | 1973-07-24 | BOES R |
| An automatic shut-off valve system for oil wells and the like including an in-line positive shut-off valve located aft of a well head in line with the main pipeline to a hydrocarbon reservoir within the earth, equipped with various sensing devices such that any dangerous environment existing in the general area of the well head will effectuate a complete and positive shut-off of the hydrocarbon flow; the shut-off valve is of the ball-type and is pneumatically actuated by means of a spring-biased cylinder, piston and rod assembly disposed at a right angle to and off-set from the axis of rotation of the rotating ball member and connected thereto by means of a bell crank assembly; when the line is to be closed a pneumatic pressure is introduced into the cylinder, propelling the piston and rod toward the ball element and by means of the bell crank assembly rotating it ninety degrees; the system includes an auxillary pneumatic system for reopening or unjamming the valve; the edge or lip of the ball serves as a cutting edge to sever any cables or wires in the pipeline.
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| 90 | Rope knife | US69485424 | 1924-02-25 | US1610699A | 1926-12-14 | MONTGOMERY GUSTAVUS A |
| 91 | Rope-knife | US29873019 | 1919-05-21 | US1368951A | 1921-02-15 | MCELHATTAN HARRISON W |
| 92 | Rope-cutting device. | US18615817 | 1917-08-14 | US1265561A | 1918-05-07 | WEAVER HOMER E |
| 93 | Wire rope and cable cutting tool | US1194461D | US1194461A | 1916-08-15 | ||
| 94 | Cable-cutting tool. | US1914817370 | 1914-02-07 | US1125209A | 1915-01-19 | TAYLOR ALPHA O |
| 95 | Rope-knife. | US1909523478 | 1909-10-19 | US978577A | 1910-12-13 | GRAHAM ALBERT C |
| 96 | Apparatus for cutting well-pumping cables. | US1910537920 | 1910-01-13 | US969755A | 1910-09-06 | SPANG GEORGE A |
| 97 | Rope-knife. | US1908453624 | 1908-09-18 | US923482A | 1909-06-01 | BEASLEY HARVEY A |
| 98 | Line-cutter. | US1908432993 | 1908-05-15 | US917555A | 1909-04-06 | DAVIN JAMES JOSEPH |
| 99 | Rope-knife. | US1904213921 | 1904-06-24 | US785433A | 1905-03-21 | PHILLIPS CHARLES R |
| 100 | VALVE WITH INTEGRAL PISTON | EP14767831.2 | 2014-03-21 | EP2976492B1 | 2017-06-21 | RYTLEWSKI, Gary L.; ALLENSWORTH, David Carter |
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