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Patent Searching and Data


Matches 501 - 550 out of 610

Document Document Title
WO/1992/015767A1
A method of retrieving well casing from a cased well bore, said method comprising the steps of deploying a tool assembly which includes a casing grapple and a casing cutter into the bore of the casing in the well substantially to a depth...  
WO/1992/010638A1
A mechanical down jar (10) and method for its use in releasing stuck objects within a well bore and for conducting other downhole servicing operations. The mechanical down jar mechanism (10) incorporates a tubular body having fixed anvil...  
WO/1991/013237A1
An iterative planning and monitoring method for drilling (and completing) difficult boreholes avoids unnecessary risk or cost. The method provides multiple point value probability estimates of an indicator of drilling problems based upon...  
WO/1991/009907A1
Disclosed is a thermoplastic polymer-linked-asphalt and a process for making a thermoplastic polymer-linked-asphalt. More particularly, disclosed is a reaction process for linking epoxide-containing polymers to asphalt. The improved ther...  
WO/1991/003620A1
A ported float shoe (5) and a landing collar (16) are attached at a first end of a portion of a casing string (4) and a sliding air trapping insert (20) is attached at the other end. The air trapping insert (20) includes a fluid flow pas...  
WO/1991/002138A1
A wellhead retrieval tool (2) is disclosed which has a number of pivotable engagement arms (3). The tool (2) is designed to fit on a wellhead (1) and a force applied to the tool to lift the tool (2) from the wellhead (1) may be used to a...  
WO/1989/006737A1
A tool is intended for use in an oil or gas well to retrieve a drilling or production string from the well, particularly in a situation where the casing or formation has collapsed, thus gripping the drilling or production string. The too...  
WO/1984/000577A1
A bidirectional hydraulic drilling jar (12) includes an elongated mandrel (42) telescopingly disposed within a body (22) and defining spaced apart fluid chamber (62, 66) separated by a restricted bore portion (64) of the body. The mandre...  
WO/1983/002641A1
An oil well packer retriever has a packer miller (6) which has a series of fin-like blades radiating from a central tube string (2). The blades are faced with tungsten carbide and in use these mill away the packer allowing it to drop und...  
WO/1982/002736A1
A pulling tool (29) for retrieving well tools (90) from a well bore. The present invention allows the reach of the pulling tool (29) to be easily varied. The pulling tool (29) can also be assembled for emergency release by either upward ...  
WO/1982/001569A1
A well jar (11) having an elongated body (14) with an axial passageway (15) and threaded connections (12, 13) for assembly into a string of well pipe. The body has a tubular mandrel (16) slideably mounted within a tubular barrel (17) wit...  
WO/1982/001213A1
A fishing tool (10) to snag and to retrieve cables from wells. The tool includes an elongated body (11) which has two ends (13 and 14), a substantial length, and peripheral boundary of lesser lateral dimensions than a well down which the...  
JP7360708B2
To provide a cleaning device for removing impurities such as dirt attached to an inner peripheral surface of a well pipe.Injection nozzle 6, 6,... for injecting high pressure water or fine granular dry ice are provided, in which the inje...  
JP2023113286A
To provide an insertion tool and a well management method capable of reducing the amount of purging performed before sampling groundwater.An insertion tool 2 inserted inside a water quality observation well 9 for monitoring groundwater 1...  
JP2023086162A
To provide a cleaning method for removing dirt adhering at an inner peripheral surface of a deep well and an inner surface of piping or dirt remaining in a hole or gap formed in a strainer of a deep well pipe.A cleaning method includes t...  
JP2022191294A
To provide aqueous modified acid compositions capable of improving, in the oil and gas industries, corrosion, logistics and handling, human and environmental exposure, reaction rates, toxicity levels, biodegradation tendencies and format...  
JP2022092114A
To provide a device for removing impurities adhering to an inner peripheral surface of a deep well.A well washing device has a rotary body 3 that is inserted into a deep well 1 and jets compressed air and granular dry ice. On the ground,...  
JP2021530640A
A method for extracting natural gas or petroleum-based products, in which shape memory alloy beads are introduced into a well using a hydraulic crushing fluid to form a bridge containing shape memory alloy beads in a tertiary pathway. Th...  
JP6958973B2
A lifting device (1) for picking up a member (7) from the bottom of the sea, the lifting device comprising; • - a body (2) extending along a central axis (20) of the lifting device and having means for connection to a hoist cable, • ...  
JP6958816B2
To provide an injection nozzle of a cleaning device for washing off dirt adhering to an inner peripheral surface of a deep well pipe by injecting high pressure water into the inner peripheral surface, wherein the injection nozzle is not ...  
JP6853653B2
To remove fluid completely during the removal work of fluid such as water and mud in a tube body.In a method for removing fluid in a tube body, a fluid removal unit 10 is constituted by attaching a tube body closing member 12 which has a...  
JP6383332B2  
JP2016069860A
To provide an excavation pipe recovery tool capable of recovering an excavation pipe 1 and an excavation tool left in an excavation hole H by securely connecting the excavation pipe recovery tool to the excavation pipe 1 even if a rear e...  
JP2016069850A
To provide an excavation pipe recovery tool capable of recovering an excavation pipe 1 and an excavation tool left in an excavation hole H by securely connecting the excavation pipe recovery tool to the excavation pipe 1 even if a rear e...  
JP5380463B2
There are provided a carbon dioxide storage apparatus and a carbon dioxide storage method which, through direct injection of carbon dioxide into an underground brine aquifer, can store carbon dioxide efficiently in the brine aquifer. A f...  
JP5208862B2  
JP5167221B2  
JP5063228B2  
JP2010221137A
To provide a system for preventing the clogging of a well by applying a magnetic field to flowing water to bring a scale-causing substance to a state being unable to precipitate.The system for preventing the clogging of the well by apply...  
JP4383124B2  
JP3955994B2
To provide a cleaning method by which sludge and other foreign matter stuck to the inside of a pipe for drawing water from a deep well can easily be removed efficiently. The stuck sludge and other foreign matter are removed by connecting...  
JP2007162262A
To provide a takeout tool for easily taking out a core pole from the inside of a core tube.The takeout tool 1 used in boring a hole in a bored object such as a concrete structure by a core boring device and taking out the core pole 22 re...  
JP2005226277A
To provide equipment for pulling up slime etc. accumulated on the bottom of a well, which enables even the hardened slime to be pulled up in an efficiently crushed manner.A jet nozzle 2 is provided at the tip of a high-pressure pipe 4 fo...  
JP2004027502A
To provide a method and a device for releasing the retention of a hole holding pipe capable of surely releasing the retention without requiring a large energy even if a retention depth is deep or the degree of retention is large.This dev...  
JP3442457B2
PURPOSE: To make it possible to pull up an damaged casing pipe. CONSTITUTION: Six wedge-like ribs 5, 5,... are fixed to the circumference of a pushing section 2 extended outward of the direction of the axis in the front end of a tube 1. ...  
JP3335211B2
Rock drilling device comprising a backhammer unit (10) in which a hammer piston (9) is movable to-and-fro for automatically exposing a tube string (4) to impacts in a direction away from a drill bit (8) in the tube string. The backhammer...  
JP3164366B2
Disclosed is a thermoplastic polymer-linked-asphalt and a process for making a thermoplastic polymer-linked-asphalt. More particularly, disclosed is a reaction process for linking epoxide-containing polymers to asphalt. The improved ther...  
JPH11506811A
A mechanical-hydraulic double-acting drilling jar includes an inner tubular mandrel telescopingly supported inside an outer tubular housing. The mandrel and the housing each consist of a plurality of tubular segments joined together, pre...  
JP2881125B2  
JPH10325289A
To provide a control method of a working module such as a hydraulic grab and a device which excavates a hole and removes obstacles from the hole extremely effectively (effective as hardware, time, and cost) and carry out a plurality of w...  
JP2775102B2
An accelerator for a fishing jar is disclosed. The accelerator includes front (11), compression (15), rear (23), and air (25) chambers. These chambers insure that the pressure of the fluid in the compression chamber is substantially inde...  
JPH09503258A
A reduce waiting time drilling jar 1 includes a mandrel 2, a housing 3 telescopingly positioned about the mandrel 2, and first and second pistons 89, 111 positioned axially between the mandrel 2 and the housing 3. The pistons 89, 111 are...  
JPH07252987A
PURPOSE: To make it possible to hold a member in an underground hole to pull out. CONSTITUTION: A tube 2 is fitted backward of the circumference of a cylindrical outside pipe 1 and is fixed. A rod 3 fixing a piston 9 to the rear end is f...  
JPH07108103A
PURPOSE: To improve the dissolving power and dissolving rate when an asphaltene residue present in an oil well is to be dissolved by preparing a hydrocarbon blend having a compsn. selected from a specified region in a ternary chart of sa...  
JPH06102952B2
A drilling jar (100) includes a swivel (20) which allows the drilling jar to operate substantially independently of any right hand torque that becomes trapped in the drill string. The swivel (20) includes a bearing cage (9) that engages ...  
JPH0645458Y2  
JPH06509852A
A double acting accelerator 1 includes a mandrel 2 arranged in a housing 3 for sliding longitudinal movement. A pair of pistons 89, 111 are positioned radially between the housing 3 and mandrel 2 to form a substantially sealed chamber 88...  
JPH0516316Y2  
JPH0579264A
PURPOSE: To separately control increase in the diameter of an excavated fluid hole extending through a jar and both upward and downward jarring actions. CONSTITUTION: A double-acting hydraulic drilling jar 1 includes a mandrel 2 arranged...  
JPH05500695A
A ported float shoe (5) and a landing collar (16) are attached at a first end of a portion of a casing string (4) and a sliding air trapping insert (20) is attached at the other end. The air trapping insert (20) includes a fluid flow pas...  

Matches 501 - 550 out of 610