Abstract: A disconnect system for coiled tubing. A first end of the coiled tubing is disconnected from a second end of the coiled tubing by holding the coiled tubing in a stationary position at a first and a second location. The coiled tubing is then sheared at one or more locations between the first and the second location.

Abstract: The present invention relates to a gel hydration tank and method for hydrating gels for use in oil well treatment operations according to which a mixture of water and gel is introduced into the interior of the tank and flows through the tank before being discharged from the tank, whereby specific devices are used to deflect and/or re-direct fluid flow so as to increase the distance traveled for a given fluid volume element, which consequently increases the plug flow efficiency of the tank.

Abstract: A method and apparatus or treating a subterranean well formation to stimulate the production of hydrocarbons utilizing foam diversion in the well formation.

Abstract: A system and method for transferring pipe according to which a pipe joint is positioned in a pipe lift in a first position and moved to a second position before being transferred from the pipe lift to a pipe shuttle and moved to a third position.

Abstract: An embodiment of a downhole tool for use with a workstring in a wellbore includes a first section, a second section, and a coupling mechanism adapted such that in a first configuration the coupling mechanism couples the first section to the second section. In a second configuration, the coupling mechanism does not couple the first section to the second section. Also disclosed is a method for creating a plug in a wellbore, the method comprising: injecting a slurry into the workstring to form a plug in the wellbore, positioning a flow preventing mechanism into the workstring to prevent fluid flow from exiting the workstring, inducing a coupling mechanism to uncouple a portion of the workstring such that the portion remains with the slurry to create the plug in the wellbore, and removing the first section from the wellbore.

Abstract: A method and apparatus for treating a subterranean well formation to stimulate the production of hydrocarbons utilizing foam diversion in the well formation.

Abstract: Compositions and methods for determining the source of treatment fluids being produced from a production formation having multiple zones by introducing a treatment composition having a tracking material into a zone in the subterranean formation, and detecting the tracking material in treatment composition that flows back from the subterranean formation.

Abstract: A method of stimulating a downhole formation according to which a plurality of jet nozzles are located in a spaced relation to the wall of the formation to form an annulus between the nozzles and the formation. An acid-containing, stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus and against the wall of the formation. A gas is pumped into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to impact the wall of the formation.

Abstract: This invention relates to a dual jacking system and method for inserting and extracting tubulars, or the like into and out of a well, such as an oil or gas well, at a relatively high rate of speed.

Abstract: A method and composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the composition basically comprises a mixture of latex, dithio carbamate, zinc oxide, and sulfur.

Abstract: A method of fracturing a downhole formation according to which a plurality of jet nozzles are located in a spaced relation to the wall of the formation to form an annulus between the nozzles and the formation. A non-acid containing stimulation fluid is pumped at a predetermined pressure through the nozzles, into the annulus, and against the wall of the formation, and a gas is introduced into the annulus so that the stimulation fluid mixes with the gas to generate foam before the mixture is jetted towards the formation to form fractures in the formation.

Abstract: A plug valve and fluid control method according to which a cylindrical plug is provided in a bore of a body member and has a through passage formed therein. The plug is adapted to be rotated about its axis to move the passage between an open position in which it is in alignment with passages in the body member to permit fluid flow through the body member, and a closed position in which it is out of alignment with the passages to prevent the fluid flow.

Abstract: A foaming apparatus and method according to which a mixture of gas and a liquid is introduced into a vessel at a predetermined velocity and passes through a passage in the vessel. The flow of the mixture through the passage is increased to increase the velocity of the mixture and cause corresponding shearing forces on the mixture to create a turbulance and form foam from the mixture. The restrictor can be moved in the passage to vary the amount of restriction and therefore the amount of the foam.

Abstract: A method and composition is provided using whey protein as a retarder in a cementing composition for use in cementing operations in a subterranean zone penetrated by a well bore.

Abstract: A seal assembly and method according to which a plurality of seal members are provided, each of which is formed by a strip of material having two interlocking portions. One of the interlocking portion of each seal member interlocks with one interlocking portion of another seal member, and the other interlocking portion of the each seal member interlocks with one interlocking portion of another seal member.

Abstract: A quick connect system and method for fluid devices according to which one end portion of a first tubular member is inserted in an end portion of a second tubular in a telescoping relationship. An arcuate clamp extends over the telescoping portions of the tubular members, and a tapered locking surface is formed on at least one of the tubular members and on the clamp. The tubular members move relative to each other in an axial direction in response to fluid pressure therein to move the tapered locking surfaces into engagement to lock the clamp against radial movement relative to the tubular members. A pipe assembly including a first connection system for connecting one end of a first pipe to one end of a second pipe while permitting relative rotation between the pipes, and a second connection system for connecting the other end of the first pipe to a third pipe so that rotation of the first pipe relative to the second pipe causes angular movement of the third pipe.

Abstract: A method of downhole fluid displacement and a plug utilized in the method according to which the plug is inserted in a pipe between two fluids for separating and displacing one of the fluids. The plug has a specific gravity of less than the fluid above it, so that, after the displacement operation, the plug floats to the top of the latter fluid for recovery.

Abstract: A system and method for controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing. A plurality of valves are disposed in respective openings formed in the tubing, and a passage is formed in each valve for connecting the chamber and the tubing interior. The valves are selectively closed to prevent any fluid flow through the passage, and selectively opened to permit fluid flow from the chamber, through the passage, and into the interior of the tubing. Thus, the volume of fluid passing from the chamber, through the valve members, and to the interior of the tubing is controlled.

Abstract: A system for distributing a fluid to a plurality of locations, in which a first conduit is provided receiving the fluid and a splitter is provided having a housing in flow communication with the first conduit for receiving the fluid. At least two branch conduits extend from the first conduit and parallel to the axis of the housing for respectively receiving portions of said fluid.

Abstract: A metal-to-metal seal assembly which provides a dynamic seal between two moving members yet does not require constant compressive loading. A hollow seal ring is provided having a "C"-shaped cross section and containing a coiled spring. The seal ring is disposed between two telescoped members of an expansion joint, or polished bore receptacle, in an interference fit and is flanked by two bearing rings. The seal ring is located relative to the pressurized fluid so that the fluid pressure is equalized across the ring and remains constant between the two telescoped members despite relative movement therebetween.