Abstract: Hanger apparatus for suporting pipe in a well, the apparatus including both an annulus check valve, via which communication is established with the annulus between the suspended pipe and surrounding casing, and a pressure fluid by-pass, via which communication with a down-hole device such as a safety valve is established. Opening of the check valve and establishment of communication via the by-pass are accomplished by a simple stabbing operation with, e.g., a handling tool or a production upper body. Alternately, the check valve is opened by hydraulic pressure delivered via the production upper body.

Abstract: Combination tension connector and flex joint for underwater tension elements, such as the tension elements of a leg of a tension leg platform. The flex joint is of generally ball and socket type, with the ball member connected to the lower end of the tension element and the socket member connected to an upwardly projecting annular portion of the male member of the connector.

Abstract: A method and apparatus for remotely establishing an underwater well under conditions of great water depth including a drilling guide structure located on the floor of the body of water; a single handling and guiding string extending upwardly from the drilling guide structure and maintained in tension by an elongated buoy; a series of drilling guide arm units, flowline guide arm units and wellhead guide arm units to be lowered down the string, oriented relative to desired well positions and then retrieved once the wells have been drilled and the wellheads and flowlines secured in place; and a production gathering assembly to be lowered down the string, oriented relative to the wellheads and flowlines, and then coupled to these wellheads and flowlines.

Abstract: A remotely operated valve, typically for use as a downhole safety valve, adapted to be connected in-line between two pieces of well pipe or other fluid-conducting members, the valve being rack-and-pinion operated and characterized by including a combined piston and rack member with the piston concentric with a through bore of the valve and with the rack eccentric with respect to the through bore, the eccentric disposition of the rack and associated support members making it possible to achieve a dependably operable valve of minimum transverse dimensions without increased complexity or cost of manufacture.

Abstract: A template levelling system and method for levelling a drilling or production template adjacent the bottom of a body of water on a plurality of suspension joints implanted in the floor of the body of water. The template has a plurality of passageways therein receiving the suspension joints which extend upwardly above the template. The template carries a pair of pivotable guideposts on opposite sides of each passageway. The levelling system includes a jacking assembly lowered by a handling string and including a hydraulic jack with an inner member slidably received in an outer member, a tension beam pivotally coupled to the inner member, a pair of tension joints pivotally and releasably coupled to the tension beam and engageable with the template guideposts, and a support beam receiving the outer member therein and releasably coupled to the tension joints via a pair of hydraulic slips assemblies.

Abstract: 2-Phenethylpiperidines bearing urea, thiourea, and amidine substituents in the ortho-position of the phenethyl moiety have been synthesized and demonstrate useful antiarrhythmic properties. These novel compounds are prepared by reaction of appropriately substituted o-amino-phenethylpiperidines with appropriately substituted phenyl isothiocyanates, phenyl isocyanates, or phenyl imino esters.

Abstract: Underwater well apparatus in which the handling string for manipulating a handling tool to, e.g., orient and land a multiple string tubing hanger includes a power portion in the form of a single metal piece having a plain cylindrical outer surface to be presented to the blowout protectors, so that orientation of the handling string relative to the protectors is not necessary, and also having through passages for communicating with the tubing strings, and coupling means for attaching the handling tool to the handling string.

Abstract: Method and apparatus for multiple well completion, in which a multiple string tubing hanger or like component is equipped with a gapped flange to accept dependent splines on the handling tool and on the production upper body to establish precise orientation of the production upper body.

Abstract: 2-[2-[2-[(4-Methoxybenzoyl)amino]phenyl]ethyl]-1-methyl-1-alkylpiperidinium halides and 2-[2-[2-[(4-methoxybenzoyl)amino]phenyl]ethyl]-1-methyl-1-benzylpiperidini um halides are antiarrhythmic agents having reduced toxicity relative to the corresponding piperidine compound.

Abstract: In devices, such as well tools, components which must support heavy loads are connected by a simple fastening device capable of transferring the heavy load from one component to the other, with the load being accepted by the fastening means in compression, and with the fastening means occupying only a small radial space.

Abstract: In devices, such as well tools, where two telescopically related members are telescopically related, the two members are connected together by a split ring in such fashion that loads are transferred from one member to the other via the split ring with the split ring accepting the load in compression.

Abstract: 4-Methoxy-N-[2-[2-(1-methyl-2-piperidyl)ethyl]phenyl]-benzamide N-oxide is an antiarrhythmic agent having reduced toxicity and increased water solubility relative to the corresponding tertiary amine.

Abstract: Method and apparatus for installing multiple strings of pipe in underwater wells in which, just prior to landing of the hanger for the multiple pipe strings, the weight of the strings is carried by a support ring releasably secured to a body member through an antifriction bearing so that rotational orientation can be accomplished.

Abstract: A coupling device, especially for well tools, for connecting a load, such as a tubing hanger from which tubing strings depend, to an upper member, such as a handling tool, from which the load is to be suspended, with capability of remote operation of the coupling device to disconnect the load and to reconnect. To provide heavy load capability when only a relatively small space is available for the coupling, coupling segments of generally C-shaped radial cross section are employed, the segments being actuated by a piston moved axially of the coupling.

Abstract: A series of 2,6-diamino-4-tertiary-amino-pyridine 1-oxides is disclosed. Substituents in the 4-position include diethylamino, pyrrolidinyl, piperidino, morpholino, thiomorpholino, and N-methylpiperazino. Novel oxadiazolones such as 5-amino-7-(1-piperidinyl)-2H-[1,2,4]oxadiazolo[2,3-a]pyridine-2-one which are useful in the preparation of the pyridine 1-oxides are also disclosed. The compounds of this invention lower blood pressure in normotensive and hypertensive mammals and are particularly useful in the treatment of hypertensive conditions in mammals. 2,6-Diamino-4-(1-piperidinyl)pyridine 1-oxide is a representative embodiment of the invention.

Abstract: Improved latch means for well tools, such as retrieving or handling tools, and well components, such as tubing hangers and casing hangers, employing latch segments disposed in an annular series in an outwardly opening groove free from the usual windowed retaining lip. The segments are retained in the groove by the annular means used to retract the segments, and that means is improved both as to capability of retaining the segments in the groove and its ability to be actuated for retraction of the segments.

Abstract: A subsea production system for handling produced well fluids from a number of individual deep water wells drilled in different parts of a field and providing the produced well fluids to a surface production platform through a central riser. The apparatus includes a manifold section on a multi-faceted central manifold base. A plurality of booms are articulated to the manifold base at the periphery thereof, with a single boom being articulated to each facet. Each boom extends radially outward from the manifold base and has a temporary guide base and subsea tree mounted to the outer end. Extending along each boom from the manifold base is a pre-installed flow line which terminates in a connection to the tree. The lengths of the booms are alternated to provide a predetermined minimum spacing from the center of each well site to any other well site or the manifold base.

Abstract: For large diameter tubular goods, especially pipe strings installed in underwater wells, the invention provides an improved quick make-and-break coupling of the type in which part of one rotation causes axial engagement between coupling lugs. Back-angled surfaces are provided in a fashion achieving radial forces, under both compression and tension, which oppose radial separation of telescopically engaged male and female connector members.

Abstract: A series of 2,6-diamino-4-tertiary-amino-pyridine 1-oxides is disclosed. Substituents in the 4-position include diethylamino, pyrrolidinyl, piperidino, morpholino, thiomorpholino, and N-methylpiperazino. Novel oxadiazolones such as 5-amino-7-(1-piperidinyl)-2H-[1,2,4]-oxadiazolo[2,3-a]pyridine-2-one which are useful in the preparation of the pyridine 1-oxides are also disclosed. The compounds of this invention lower blood pressure in normotensive and hypertensive mammals and are particularly useful in the treatment of hypertensive conditions in mammals. 2,6-Diamino-4-(1-piperidinyl)pyridine 1-oxides is a prepresentative embodiment of the invention.

Abstract: A series of 2,6-diamino-4-tertiary-amino-pyridine 1-oxides is disclosed. Substituents in the 4-position include diethylamino, pyrrolidinyl, piperidino, morpholino, thiomorpholino, and N-methyl-piperazino. Novel oxadiazolones such as 5-amino-7-(1-piperidinyl)-2H-[1,2,4]-oxadiazolo[2,3-a]pyridine-2-one which are useful in the preparation of the pyridine 1-oxides are also disclosed. The compounds of this invention lower blood pressure in normotensive and hypertensive mammals and are particularly useful in the treatment of hypertensive conditions in mammals. 2,6-Diamino-4-(1-piperidinyl)pyridine 1-oxide is a representative embodiment of the invention.