Matches 101 - 150 out of 187 < 1 2 3 4 >
Match Document Document Title
5613557 Apparatus and method for sealing perforated well casing  
Perforations and other openings in well casings, liners and other conduits may be substantially blocked or sealed to prevent fluid flow between the casing or liner interior and an earth formation...
5531272 Low temperature underwater epoxy system for zone isolation, remedial cementing, and casing repair  
A method for zone isolation or replacing a damaged or corroded casing with a solid plastic is described herein. A resin/curing agent mixture sufficient to form a hardened plastic or solid,...
5507343 Apparatus for repairing damaged well casing  
A method and apparatus for repairing or isolating holes, ruptures, splits or old perforations in marginal oil and gas wells from producing perforations. The apparatus includes two packer...
5503227 Methods of terminating undesirable gas migration in wells  
The present invention relates to a method of terminating undesirable gas migration in a well through one or more passages such as channels and microannuli in the cement sheath holding the casing in...
5494106 Method for sealing between a lining and borehole, casing or pipeline  
To seal the connection between an internal lining and external borehole, casing or pipeline, one or more elastically deformable annular seals are placed on the preform in a contracted state, in a...
5477921 Method and system for logging a well while fishing for the logging tool  
This invention provides a method and system for logging an earth formation with a logging tool that is stuck (lodged) in a well bore traversing the earth formation while fishing for the stuck...
5454419 Method for lining a casing  
A method of lining a casing affixed in a well bore for repairing breaches in the casing with a continuous string of tubular polymeric material is provided. The tubular polymeric material has an...
5413176 Sand screen repair  
A sintered metal screen is releasably suspended from a packer mandrel by a locking mandrel and a landing nipple. The sintered metal screen and locking mandrel are retrievable with the assistance of...
5390742 Internally sealable perforable nipple for downhole well applications  
A longitudinally spaced series of tubular nipple structures are installed in a well flow conductor operatively extended through a subterranean well bore. Each nipple structure has a thinned-wall,...
5377757 Low temperature epoxy system for through tubing squeeze in profile modification, remedial cementing, and casing repair  
A method for zone isolation, profile modification, remedial cementing, or replacing a damaged or corroded casing with a solid plastic is described. A solidifiable epoxy resin mixture, containing a...
5370183 Well casing guide string and repair method  
Well casing is repaired using a guide string for maintaining contact with a lower casing section disposed in the well, particularly an open hole portion of such well. The guide string is connected...
5366012 Method of completing an uncased section of a borehole  
Method of completing an uncased section (10) of a borehole (1) in an underground formation (2) comprising the steps of: (a) placing at a predetermined position in the borehole (1) a slotted...
5351758 Tubing and profile reaming tool  
A method and apparatus for reaming foreign deposits from the flow passage of well production tubing and cleaning deposits from the completion profiles within the tubing as well as for drifting the...
5337823 Preform, apparatus, and methods for casing and/or lining a cylindrical volume  
According to the invention, the tubular preform is radially deformable between a longitudinally folded state and substantially cylindrical unfolded state to form a length of rigid tube in situ. The...
5318125 Method for continuing measurements after recovery of a measuring tool immobilized in a well  
A method for continuing a measuring operation using a sonde immobilized in the well which method involves lowering, concentric to the cable, a length of tubular elements until the sonde is engaged...
5295541 Casing repair using a plastic resin  
A method for replacing a damaged or corroded casing with a solid plastic is described herein. After removing the corroded or damaged casing from the wellbore, the borehole is underreamed to a...
5287922 Emergency method for running slips over casing collars  
An emergency casing hanger can be lowered over casing collars and into a wellhead housing to support a string of casing. The casing hanger has a slip bowl which is slotted so that it can be...
5195588 Apparatus and method for testing and repairing in a cased borehole  
An apparatus is disclosed for perforating, testing, and repairing casing in an earth borehole. A device is moveable through the casing. The device can be mounted on a wireline, on tubing, or on...
5161614 Apparatus and method for accessing the casing of a burning oil well  
An apparatus for providing access to the casing of a burning oil well near the wellhead includes a sled-like carriage which is moved over the ground surface into a position straddling the well...
5154230 Method of repairing a wellbore liner for sand control  
In a well treatment method, a fluid is positioned in a wellbore have formation perforations in alignment with the portion thereof to be treated. A gas generator is positioned in proximity with the...
5127473 Repair of microannuli and cement sheath  
This invention relates to a method of repairing holes, channels, voids and microannuli in a cement sheath situated in the annular space between a casing and the wall of a wellbore penetrating a...
5123487 Repairing leaks in casings  
This invention relates to a method of repairing a hole in and thereby terminating the undesirable flow of fluid through a hole in a casing disposed in a wellbore penetrating a subterranean earth...
5117909 Well conduit sealant and placement method  
Gas leakage from oil wells through casing thread connections and other small leakage spaces is reduced or eliminated by injecting into the lift gas flowstream a sealant composition comprising a...
5083608 Arrangement for patching off troublesome zones in a well  
The arrangement for patching off troublesome zones in a well has a string of profile pipes with cylindrical portions at their ends, and a device for setting the string of profile pipes in a well,...
5040283 Method for placing a body of shape memory metal within a tube  
A body of shape memory metal is placed within a tubing by a running sub which transports the body to a desired location within the tubing while the shape memory metal is in its martensitic phase...
5040600 Geothermal wellhead repair unit  
A geothermal wellhead repair unit including a mechanically set packer to isolate the wellhead for removal and repair thereof. The packer is run into the well string using a running tool. The packer...
4977958 Downhole pump filter  
A downhole pump filter filters sand and other solid particles from well fluids prior to passage of the fluids through the intake nut of a well pump. A cylindrical coupling has an externally...
4976322 Method of construction of multiple-string wells  
The method of well construction includes the steps of drilling the rock and consolidating it with a conductor casing, a surface casing string and a flow string, and isolating the troublesome zones...
4875523 Pipeline servicing tool  
The invention relates to a compact valve removal tool with a fixed crosshead (18) to be mounted on a pipeline end, such as a wellhead spool outlet (3), and a moving crosshead (19) which is axially...
4869321 Method of plugging openings in well conduits  
Thread leaks, small holes, and leaks around packers in well casings and production tubing are repaired by applying a compressed foam mixture which includes discrete solid particles of various sizes...
4852654 Wireline hydraulic isolation packer system  
A unitary assembly (10); is disclosed for isolating a leak in a side pocket mandrel (12) between the tubing annulus (16) about a tubing string (14) and the interior (20) of the tubing string. The...
4830109 Casing patch method and apparatus  
The present invention relates to a method and an apparatus for making a casing patch while the casing is held under tension. The method includes the steps of lowering a casing patch tool to...
4825948 Remotely variable multiple bore ram system and method  
Method and apparatus for varying from a remote location the bore of shoes within a ram-type blow out preventer to sealingly engage pipe of varying diameters. A plurality of shoe pairs is provided,...
4817716 Pipe connector and method of applying same  
An improved repair connector for a subsea tubular member and the method of making such repair. The improved repair connector includes a annular housing and an annular guide, said annular housing...
4754810 Method for patching casing leaks  
A process for sealing casing leaks comprises cleaning out the annulus between the tubing and the casing, situating a gelable mixture in the annulus at the loci of the leak in the casing, pressuring...
4733732 Submudline drivepipe whipstock method and apparatus  
In order to salvage a slot path on an offshore platform wherein the original conductor pipe has become clogged or otherwise rendered unusable, the original conductor is cut off below mudline,...
4705111 Tubing assembly  
A tubing assembly is disclosed for providing fluid communication and wireline access from a tubing string through a tubing remnant extending above a packer set within a casing. In combination, the...
4538684 Repair of shallow casing leaks in oil wells  
Method of repairing a leak in a well production string by milling a protective pipe string down between the conductor pipe and the production string, and cementing it in place at depths up to 500...
4531583 Cement placement methods  
A method for use in a cased well bore for placing cement in a vertical channel existing in the annulus between the casing and a well bore to seal off vertical channels in a prior cement job. In the...
4526232 Method of replacing a corroded well conductor in an offshore platform  
A method of replacing a corroded well conductor positioned in an oil production platform at an offshore location. After shutting in or killing the well, the wellhead is removed and the sections of...
4501327 Split casing block-off for gas or water in oil drilling  
A method for sealing the wall of a bore hole comprises forming a liner of resilient sheet material into a substantially cylindrical or scroll configuration having a diameter smaller than that of...
4279299 Apparatus for installing condition-sensing means in subterranean earth formations  
The present invention is directed to an apparatus for installing strain gages or other sensors-transducers in wellbores penetrating subterranean earth formations. The subject apparatus comprises an...
4133342 Method of replacing seals in a well ram type blow out preventer  
This invention relates to the replacement of seals in ram type blow out preventers and is especially useful for replacing such seals where the well head is at a considerable distance from the drill...
4091868 Method of treating oil wells  
Processes for plugging oil producing formations, fluid thief formations and the like in oil wells and compositions for the same are disclosed.
4074756 Apparatus and method for well repair operations  
Flow channels behind the casing in a well are plugged by detecting a circumferential temperature anomaly on the casing, perforating in the direction of such anomaly, and introducing cement into the...
4074735 Grouting tube  
This invention relates to a grouting tube for packer designed to prevent back-flow of cement grouting material past the grout packer out of the grouting area. The grouting tube is comprised...
4007905 Retrievable blow-out preventer ram seals  
Retrievable blowout preventer ram seals which are adapted to be removed and/or inserted with apparatus working on the inside of the well pipe.
3967681 Repair of cement sheath around well casing  
A method is provided for repairing a cement sheath around the casing in a well bore in which a retainer is inserted within the casing below perforations in the casing adjacent an area of cement...
3948321 Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same  
Method and apparatus for emplacing a liner in a conduit in a well penetrating subterranean formations characterized by suspending at a predetermined depth in the well at least one annular liner...
3785193 LINER EXPANDING APPARATUS  
Apparatus for repairing tubular members, such as oil well casing or tubing, wherein a malleable liner is expanded into sealed engagement with the inside of such tubular member in spite of...
Matches 101 - 150 out of 187 < 1 2 3 4 >