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JPH0663416B2 |
A whipstock mill for milling through the casing wall which incorporates a pressure drop tattletale to signal the operator that the milling operation should be halted. The milling tool includes a longitudinal fluid passageway which commun...
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JPH0548144Y2 |
Bore hole instrument and methods of manufacturing and using the same. The instrument includes an elongated flexible probe which is inserted into a bore hole and can travel freely around bends of relatively short radius in the hole. The p...
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JPH0564600U |
[Purpose] Sufficiently improve durability and durability while reducing the weight and cost of the entire fluid transport pipe. [Constitution] A fluid transport pipe 14 is suspended from the floating production facility 12 into the sea. ...
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JPH0532165B2 |
This miling tool for underground work consists of a tool body which has a plurality of cutter blades. Each cutter blade has a negative axial rake and an essentially constant negative radial rake. In addition, each cutter arm has a close ...
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JPH052800B2 |
A ram-type shearing apparatus for a wellhead having a body with a vertical bore therethrough and aligned, opposed ram guideways 16 extending outward in the body from the bore, a ram assembly 20, 22 in each of the guideways, each of the r...
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JPH0478406B2 |
A pipe cutting tool (10) especially adapted to cut the interior of the in-the-hole (I-T-H) drill pipe (12, 16) to allow subsequent removal of the pipe above the cut. Due to blasting damages, long sections of I-T-H pipe, otherwise in good...
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JPH04347295A |
PURPOSE: To surely extinguish the fire of foil well. CONSTITUTION: Vertical pits 2 are excavated on both sides of a crude oil-taking pipe 1 in an oil well on fire, and a propulsive apparatus 3 having a press crusher 4 on its tip is set i...
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JPH04323492A |
PURPOSE: To simply extinguish oil well fire by drilling a tunnel from the surface ground at a prescribed distance from an oil well pipe, pinching the oil well pipe exposed in the tunnel with a pair of pinchedly holding members, and tight...
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JPH03279591A |
PURPOSE: To prevent damage by inserting hard sleeve and insert rings of tungsten carbide into sheet rings mounted to a movable gate valve chest in a state of compression preload. CONSTITUTION: A hard sleeve 44 of tungsten carbide is inse...
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JPH03502351A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPH0360910A |
PURPOSE: To prevent damage to a gate by forming sleeves and inset rings from a hard wear resistant material, and mounting and keeping the sleeves and the insert rings in respective positions under compressive preloads such that they resi...
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JPH0242796Y2 |
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JPH0230098Y2 |
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JPH02197692A |
PURPOSE: To remarkably improve the safety, and to lower the cost while preventing the waste of time by maintaining the non-explosion condition till a power unit is made fale and a conductive contact is generated, and sealing a contact of...
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JPH02144492A |
PURPOSE: To surely close a side discharge port of a casing against a cement flow by rotating a drive tool to form a passage passing through a cement cured in a chamber of a stage collar, and abutting the tool on a sleeve to move the slee...
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JPH0124191Y2 |
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JPH01116189A |
PURPOSE: To prevent a casing from being excessively deformed, by setting a spear in the casing, pulling the spear to tense the casing, and performing cold forging. CONSTITUTION: A casing patch tool is lowered to position both an annular ...
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JPS649440B2 |
A shearing apparatus for installation on a wellhead and having capability of shearing drill collars. The improved apparatus includes a body with a vertical bore therethrough and ram guideways extending laterally from opposite sides of th...
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JPH01500447A |
PCT No. PCT/GB87/00335 Sec. 371 Date Mar. 18, 1988 Sec. 102(e) Date Mar. 18, 1988 PCT Filed May 15, 1987 PCT Pub. No. WO87/07322 PCT Pub. Date Dec. 3, 1987.Apparatus for enlarging or removing irregularities in an underground duct compris...
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JPS63272887A |
Disclosed are an improved repair connector 12 for a subsea tubular member 10 and the method of making such repair. The improved repair connector includes an annular housing 18 and an annular guide 16, the annular housing having internal ...
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JPS63184689A |
A milling tool for use in oil and gas extraction wells has a tubular member (1) with a longitudinal bore (2) for the passage of fluid and radially extending cutting blades. Upwardly directed ports (70) extend from the bore to a location ...
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JPS63181808A |
Disclosed is a method and apparatus for cutting piling and conductors extending into the sea floor from an offshore platform. A window is cut into the piling to permit access to the stabbing point which is then removed. The piling is was...
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JPS63181885A |
An apparatus for use in energy exploration is disclosed which is used where a radially expanding device is required, for example in a stabiliser, retriever or an underreamer. The apparatus comprises a support tubular member (1) for conne...
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JPS6316559B2 |
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JPS6311517B2 |
Rams are provided in a blowout preventer to shear the drill string and seal the well bore should the need arise. Two shearing rams have cutting blades which shear the drill pipe. A seal member is mounted behind one of the cutting blades ...
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JPS6250638B2 |
There is disclosed a ram type blowout preventer in which the chambers in which the rams are received and for movement between opened and closed positions are automatically vented to the bore of the preventer housing above the closed rams...
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JPS62242090A |
Probe and method for determining the curvature of an elongated opening such as a borehole in the earth. The probe includes an axially extending flexible shaft and two pairs of sensing wires arranged in quadrature about the shaft for axia...
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JPS6220355B2 |
A blowout preventer wherein the connecting rod 30 of the operating piston 25 for at least one of the rams 26B is essentially pressure balanced so that the operating means need not overcome the force of well fluid acting over the cross-se...
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JPS6272884A |
In a ram boring machine for laying pipelines without trenching, a double blade that is axially moveable against a compression spring is housed in an impact tip and projects through slots in the impact tip. The double blade is struck by a...
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JPS61206793U |
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JPS6153168B2 |
An internal tube cutter (48) for cutting the inside of tubes (38) of a nuclear steam generator comprises an extendable cutter (54) capable of being disposed within a tube (38) of the steam generator along with a flexible transverse posit...
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JPS6135354B2 |
A self powered downhole tool anchor device (10) preattached to a downhole tool (T) and unitarily supported by a drill string (DS) for a single trip into a well bore, actuated by forceful engagement with the bottom or plug (P) in the well...
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JPS60234409A |
A cable following apparatus has a rotating annulus at the front portion of its main body where a cylindrical axial opening of the body passing over a cable first comes in contact with concentric neutral wires. The annulus, by rotating in...
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JPS60234186A |
There is disclosed a gate valve which is moved to open position by an extendible and retractable, fluid-operated actuator, and which is moved to closed position, upon exhaust of operating fluid, by coil springs which urge follower parts ...
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JPS60233289A |
An improved blowout preventer stack includes a plurality of ram type blowout preventers (14), an annular blowout preventer (13), and a plurality of tie rods (18) connecting the blowout preventers into a stack. The upper ends of the rods ...
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JPS6012517B2 |
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JPS5991294A |
Apparatus for the pyrotechnic cutting of a submerged tube. The apparatus, which is introduced into the tube, comprises in a conventional manner a chassis on which is mounted a support for a pyrotechnic charge, a shield in the upper part ...
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JPS594023B2 |
An improved chemical cutting apparatus for cutting objects in well bores such as, for example, tubing in the bore of an oil or gas well. The apparatus is properly positioned relative to the object to be cut by means of a casing collar lo...
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JPS5851118B2 |
Apparatus for severing a conduit along a plane generally transverse to the axis of the conduit which includes two confined explosive charges aligned axially with the conduit and terminating at opposed proximal convexly shaped ends facing...
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JPS58193477A |
Bore hole instrument and methods of manufacturing and using the same. The instrument includes an elongated flexible probe which is inserted into a bore hole and can travel freely around bends of relatively short radius in the hole. The p...
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JPS5841395B2 |
An improved chemical cutting apparatus for cutting objects in well bores such as, for example, tubing in the bore of an oil or gas well. The apparatus is properly positioned relative to the object to be cut by means of a casing collar lo...
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JPS5832274B2 |
Shear rams shearing drill pipe passing through with blowout preventers encountering hydrogen sulfide are disclosed. The ram bodies are formed of an alloy having an upper hardness level of about Rc22 and the shearing blade and drill strin...
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JPS585357B2 |
A shear ram assembly for a blowout preventer having a pair of rams with opposed shear blades, means for moving the shear blades across the pipe opening of a blowout preventer, a face seal on one of said rams and a shoulder above said fac...
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JPS5755875B2 |
A shear ram assembly for a blowout preventer has a pair of rams 24, 26 with opposed shear blades 36, 38, means for moving the shear blades 36, 38 across the pipe opening of the blowout preventer, one of the rams 24 having a shoulder 44 s...
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JPS57501109A |
PCT No. PCT/NO81/00032 Sec. 371 Date Feb. 26, 1982 Sec. 102(e) Date Feb. 26, 1982 PCT Filed Jul. 13, 1981 PCT Pub. No. WO82/00388 PCT Pub. Date Feb. 4, 1982.Method of removal of the interior parts of cables in the ground, preferably coax...
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JPS5792295A |
A stacked load of gas-forming pyrotechnic fuel pellets comprising metal, metal oxide and PTFE in varying amounts for use in apparatus for severing conduits in high pressure environments.
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JPS5716237B2 |
Apparatus for severing tubing along a generally transverse plane through the tubing wall, and including two confined explosive charges aligned axially with the tubing wall and terminating at opposed, proximal ends facing each other acros...
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JPS56119093A |
Apparatus for severing a conduit along a plane extending transversely through the conduit which includes an elongated housing forming a pair of longitudinally spaced-apart fuel chambers communicated by an impingement passage extending lo...
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JPS5540159B2 |
A negative energy power supply which operates submerged equipment like a hydraulic actuator. A main component of the system is a submerged chamber held at substantially atmospheric pressure. It is connected to submerged equipment having ...
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JPS5536480B2 |
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