Abstract

A sleeve signalling system enables robust, mechanical and highly visible binary signalling. The system comprises an elongated signalling element comprising a signal marking, and a sleeve disposed over the signalling element. The sleeve is slidable along the elongated signalling element between a first position that covers the signal marking and a second position that uncovers the signal marking.

IPC Classes  ?

• F17D 5/00 - Protection or supervision of installations
• E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
• E21B 43/26 - Methods for stimulating production by forming crevices or fractures
• E21F 7/00 - Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose
• F16K 31/44 - Mechanical actuating means
• F16K 31/48 - Mechanical actuating means actuated by mechanical timing-device, e.g. with dash-pot
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• G01F 23/16 - Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid

Abstract

in situin situ with minimal pipe flow interruption. The system comprises a damaged section of the HDPE pipe; an adhesive primer applied to an outer surface of the damaged section of the HDPE pipe and substantially surrounding the damaged section of the HDPE pipe; windings of reinforcement tape wrapped around the damaged section of the HDPE pipe and covering the adhesive primer, wherein at least one winding of the reinforcement tape overlaps another winding of the reinforcement tape, thereby bonding the reinforcement tape to the HDPE pipe; at least one strapping band wrapped around the reinforcement tape to provide additional reinforcement; and windings of composite epoxy tape wrapped around the reinforcement tape and the at least one strapping band, wherein at least one winding of the composite epoxy tape overlaps another winding of the composite epoxy tape.

IPC Classes  ?

• F16L 55/168 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
• F16L 55/179 - Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like

Abstract

A pipe perforation system enables a junction to be formed in a pressurised pipe without the need to depressurise or stop liquid or gas flow in the pipe. The system includes: a drive shaft having a distal end and a driven end; a hole cutter connected to the distal end of the drive shaft; an actuator connected to the driven end of the drive shaft; and a base section that receives the hole cutter and the drive shaft. In use the base section seals a space between a pipe and the actuator, enabling a pressure in the pipe to be maintained after the hole cutter perforates the pipe.

IPC Classes  ?

• B21D 28/28 - Perforating, i.e. punching holes in tubes or other hollow bodies
• B21D 28/34 - Perforating toolsDie holders
• B26F 1/00 - PerforatingPunchingCutting-outStamping-outApparatus therefor
• B26F 1/14 - Punching toolsPunching dies
• F16L 47/34 - Tapping pipes, i.e. making connections through walls of pipes while carrying fluidsFittings therefor
• F16L 55/07 - Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining

Abstract

Automated gas or liquid break-through detection and reinjection systems are disclosed. The reinjection systems are for reinjecting gas from an underground water pipeline into an associated gas pipeline, or reinjecting water from an underground gas pipeline into an associated water pipeline. The gas or liquid reinjection system includes: a pump, configured to either pump a) gas from a riser of the underground water pipeline into the associated gas pipeline, or b) water from a low point drain of the underground gas pipeline into the associated water pipeline; one or more pressure sensors, configured to either sense a level of liquid in the riser or the low point drain; and a controller, coupled to the pump and one or more pressure sensors, configured to automatically control operation of the pump according to the sensed level of liquid in the riser or low point drain.

IPC Classes  ?

• F16L 55/07 - Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
• F16T 1/45 - Means for venting or aerating
• F17D 1/02 - Pipe-line systems for gases or vapours
• F17D 1/08 - Pipe-line systems for liquids or viscous products
• F17D 3/14 - Arrangements for supervising or controlling working operations for eliminating water
• B01D 19/00 - Degasification of liquids
• F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
• E21B 43/34 - Arrangements for separating materials produced by the well

Abstract

A high-point vent system of the present invention enables robust vent operation in harsh environmental conditions. The system includes: a housing defining a central cavity; a filter that extends across the central cavity; a float positioned in the central cavity; a float rod having a lower end and an upper end, the lower end of the float rod connected to the float and the upper end of the float rod connected to a seal; and a manifold connected to the housing and having an input end and an output end, wherein the input end defines a seal orifice that is positioned adjacent to the seal.

IPC Classes  ?

• F16K 24/04 - Devices, e.g. valves, for venting or aerating enclosures for venting only
• F16L 55/07 - Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
• F16K 17/164 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side and remaining closed after return of the normal pressure
• F16K 17/00 - Safety valvesEqualising valves
• F16K 31/38 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
• B01D 19/00 - Degasification of liquids