Abstract: Apparatus and associated methods relate to a shapeable conduit. In an illustrative example, the shapeable conduit may have a circumferentially flexible wall extending along a longitudinal axis. The wall may, for example, define a lumen configured to receive one or more cables. Multiple longitudinally extendable manually deformable axial stiffening members may, for example, be circumferentially distributed in the wall. A releasable coupling mechanism may, for example, have at least two mating engagement members. The engagement members may, for example, releasably engage in an enclosed state such that the wall circumscribes the lumen. The engagement members may, for example, be tangentially separable into an open state such that the cables can be radially transferred between an interior and an exterior of the lumen. Various embodiments may advantageously be manipulated such that the axial stiffening members cause the flexible wall to retain cables enclosed within the lumen in a desired configuration.

Abstract: A downhole throttling device based on wireless control includes an inlet nozzle, a throttling assembly, an electrical sealing cylinder, a gas guide cylinder, a lower adapter sleeve, an end socket, a female sleeve, and electrical components. The inlet nozzle is connected to the throttling assembly, the throttling assembly is connected to the electrical sealing cylinder and the gas guide cylinder, the electrical sealing cylinder and the gas guide cylinder are both connected to the lower adapter sleeve, the lower adapter sleeve is respectively connected to the end socket and the female sleeve, and the electrical components are arranged in the electrical sealing cylinder. A throttling effect is achieved by detecting the temperature and pressure in a tube by a temperature/pressure sensor in the electrical components and controlling a motor to rotate a movable valve in the throttling assembly by a circuit control assembly, thereby achieving wireless control over downhole throttling.

Abstract: Provided is an electro/hydraulic valve for use in a hydrocarbon production well, an electrically surface-controlled subsurface safety valve, and a method of operating an electrically surface-controlled subsurface safety valve. The electro/hydraulic valve for use in a hydrocarbon production well, in one aspect, includes a fluid chamber and an electro/mechanical pump having a fluid inlet and a fluid outlet, and further wherein an inlet check valve is positioned in fluid communication between the fluid chamber and the fluid inlet and an outlet check valve is positioned in fluid communication between the fluid outlet and a hydraulically controlled actuation member.

Abstract: An assembly having a coupling component and a poppet is disclosed. The coupling component has a first end. The first end has an opening extending into the coupling component, such that the coupling component has a sidewall extending around and defining the opening, the sidewall at least partially constructed of a ductile material. The poppet is positioned within the opening. The poppet has a first end outside of the opening, a second end within the opening, and an outer surface extending between the first end and the second end. The poppet has a recess positioned between the first end and the second end, the recess being defined by at least one sidewall and a bottom. At least a portion of the ductile material of the sidewall is positioned within the recess to secure the poppet into the opening.

Abstract: A removable barrier is provided that prevents flow between an exterior of a mandrel and an interior of a mandrel. In one embodiment a dissolvable shroud surrounds the ports of the gas lift valve and temporarily prevents flow between the exterior of the gas lift valve and the interior of the mandrel. In an additional embodiment, a dissolvable plug may be placed within a portion of the gas lift valve or a portion of the lug in the mandrel to temporarily prevent flow between the exterior of the gas lift valve and the interior of the mandrel. In another embodiment, a dissolvable sleeve is placed within the mandrel to cover the port within the mandrel to temporarily prevent flow between the exterior of the gas the valve in the interior of the mandrel.

Abstract: A two-way injection valve having a primary flow path to allow chemical injection into an annulus area surrounding production tubing and a secondary flow path to allow chemical injection into the inside of the production tubing via a tubular member of the production tubing. A method of using the two-way injection valve includes the step of injecting chemical into an annulus area via a two-way injection valve. The method also includes the step of injecting chemical inside of production tubing via the two-way injection valve.

Abstract: A downhole tool includes a housing and a housing chamber. The housing chamber is separated from a fluid chamber by a seal. The seal maintains a pressure differential between the housing chamber and the fluid chamber. A pressure adjuster between the housing chamber and the fluid chamber maintains the pressure differential below a maximum pressure differential.

Abstract: A gas lift system includes tubing configured to be a conduit for production fluids having a weight, an inflow control valve, installed within the tubing, configured to control gas from the gas reservoir into the well, a gas-separator compressor turbine device installed within the tubing, a gas lift valve configured to allow flow of the gas from the annulus into the tubing, and an injection pressure operated gas lift valve configured to allow flow of the gas from the annulus into the tubing. The gas and the production fluids, from the oil reservoir, mix to lower the weight of the production fluids and flow the production fluids through the tubing to be produced at a surface location.

Abstract: Devices that can be used to recover hydrocarbon production from closed-in oil wells capable of building up wellhead pressure and/or to sustain marginal oil production in oil wells are disclosed. Production in oil and natural gas producing wells in mature fields that have the ability to build up wellhead pressure and where the depletion of reservoir pressure has caused low or zero productivity may be automated. The devices include at least two bellows that facilitate their operation. The bellows may close the well to build up pressure in the wellhead and open the well to flow line pressure.

Abstract: An assembly having a coupling component and a poppet is disclosed. The coupling component has a first end. The first end has an opening extending into the coupling component, such that the coupling component has a sidewall extending around and defining the opening, the sidewall at least partially constructed of a ductile material. The poppet is positioned within the opening. The poppet has a first end outside of the opening, a second end within the opening, and an outer surface extending between the first end and the second end. The poppet has a recess positioned between the first end and the second end, the recess being defined by at least one sidewall and a bottom. At least a portion of the ductile material of the sidewall is positioned within the recess to secure the poppet into the opening.

Abstract: A plumbing component includes a cold water inlet; a hot water inlet; an outlet configured to output cold water, hot water, or a mixture thereof; a flow shut-off mechanism for restricting the flow of water out of the outlet; a first flow control valve for controlling the flow of cold water; and a second flow control valve for controlling the flow of hot water. Each of the flow control valves comprises a valve member and an associated valve seat, each valve member arranged to engage with the associated valve seat to control the flow of water through the flow control valves to the water outlet. One or both of the valve members includes a graduated flow control bead arranged to seal against the associated valve seat to provide a graduated flow transition between a maximum flow state and a minimum flow state of the, or each, control valve.

Abstract: A lift gas injection system that is used for introducing lift gas into a stream of production fluid includes a lift gas injection valve. A pressure protection system guards the injection valve against external overpressure by blocking communication to inside the injection valve housing when ambient pressure exceeds a set pressure. Communication is blocked by moving a valve member so that it obstructs flow through an opening in the housing. The system includes pressure actuated valve which has a platen mounted to an end of a bellows, and a valve member coupled to the platen. Surface area is reduced on the bellows side of the platen that creates a force imbalance on the platen from applied ambient pressure. At the set pressure the force imbalance moves the platen, and which pushes the valve member against the opening. A compressible pressure compensator inside the injection valve protects against internal overpressure.

Abstract: A connection system includes a turnbuckle having a first set of threads and a second set of threads disposed on an inner surface of the turnbuckle. The turnbuckle is configured to couple two threaded components to one another via rotation of the turnbuckle in a first direction. In addition, the connection system includes a compression washer configured to compress as the turnbuckle rotates in the first direction. The compression washer is configured to apply a longitudinal force to the turnbuckle while the compression washer is compressed to increase resistance to rotation of the turnbuckle in a second direction, opposite the first direction.

Abstract: A chemical injection valve can include a valve stem, flow between sections of a flow passage being prevented and permitted in respective closed and open positions of the valve stem, a resilient primary seal that prevents flow through an annular gap surrounding the valve stem in the closed position, and a bypass passage in communication with the annular gap and a flow passage section, and in communication with another flow passage section in the open position. A chemical injection system can include a chemical treatment pumped through a chemical injection valve and into an interior of a tubular string, and the chemical injection valve including a valve stem and a bypass passage extending between a flow passage section and an annulus surrounding the valve stem, the annulus being positioned longitudinally between a resilient primary seal and a metal secondary seal.

Abstract: A GLV-gas lift valve that uses dual “Fortress™” seals on both sides of the bellow 19 to protect said bellow from both high dome pressure 3 acting against outside bellow surface and high injection pressure acting against bellow 19 internal surface. When valve is in closed position, after dome pressure 3 is applied, upper-dome side “Fortress™” seal is engaged and prevents high dome pressure reaching said bellow 19 external surface. When valve is in fully open position, when injection pressure 14 is applied, lower seal 10 is engaged and prevents access of high injection pressure into bellow acting against bellow internal surface. This principle allows much higher pressures to be applied in valve dome section and injection section by reducing differential pressure across the bellow 19. In addition, lower “Fortress™” seal allows very high injection pressure 14 more than 10 KSI to be applied without damage to bellow or gas lift valve components.

Abstract: A distributed downhole sensor system for a well includes a sensor array comprising. The sensor array includes a plurality of sensors and cable segments. Each sensor is associated with a unique digital address and locatable downhole to capture sensor data simultaneously and output the simultaneously captured sensor data under a first control condition, and a single sensor of the plurality of sensors is configured to capture sensor data independently and output the independently captured sensor data under a second control condition. The cable segments couple the sensors in a line or an array to deliver power to the sensors and provide a communication channel to and from the sensors.

Abstract: A system and method to protect downhole tools and equipment used in transporting fluids with erosional and/or corrosive characteristics is disclosed according to one or more embodiments. The protection assembly engages with a latch coupling or other surface in need of protection to form a barrier between the latch coupling surface and any erosional or corrosive fluids. The protection assembly comprises a barrier sleeve portion and a support sleeve portion disposed in the barrier sleeve. The support sleeve is moveable between a first and second position within the barrier sleeve. In a first position of the support sleeve, collet fingers in the barrier sleeve may flex to allow movement through the latch coupling while in a second position of the support sleeve, the collet fingers may not flex and the barrier sleeve is engaged and protecting the latch coupling.

Abstract: Isolation plugs may be installed in a wellbore flow control device to temporarily close a flow path therethrough. The isolation plugs may be installed in threaded openings often provided to for access to nozzles or other flow restrictors in the flow control devices. The isolation plugs may initially be locked in a closed configuration while being run in hole and may be unlocked in response to the application of a predetermined activation pressure. Once unlocked, the isolation plug may not immediately move to an open configuration but may continue holding pressure to permit circulation and washdown operations to be conducted. The activation pressure may be reduced to a second predetermined threshold to lock the isolation plug in the open configuration wherein flow is permitted through the flow control device.

Abstract: On a production tubing positioned in a casing string, a bypass adapter is coupled to a packer tool. The bypass adapter comprises an inner mandrel positioned in an inner bore of the packer tool. Injection gas flows between the production tubing and the casing string, through a plurality of ports, in a space located inside the inner bore of the packer tool and outside of the inner mandrel, thus bypassing the packer tool. This injection gas then flows down the outside of a tailpipe located below the packer tool. Fluid produced by the well mixed with this injected gas flows inside the tailpipe, through the inner mandrel, and into the production tubing.

Abstract: A gas-lift system includes a first valve configured to provide selective communication of a wellbore fluid between an interior of a production tubing an annulus defined exterior to the production tubing, a second valve configured to provide selective communication of the wellbore fluid between the interior of the production tubing and the annulus, and one or more control lines coupled to the first valve and the second valve. The one or more control lines apply a pressure differential to the first and second valves. The first valve is configured to actuate from an open position to a closed position in response to the pressure differential reaching a first pressure differential, and wherein the second valve is configured to actuate from an open position to a closed position in response to the pressure differential reaching a second pressure differential that is different from the first pressure differential.

Abstract: For gas lift, gas lift valves install on a completion in a wellbore. The gas lift valve has a pressure-sensitive valve and a check valve configured to control communication in the valve. A piston is held closed with a first connection relative to the valve's outlet exposed to tubing pressure, while the check valve is held open in the valve with a second connection. Pressure testing can be performed on the integrity of the tubing and casing by increasing the tubing and annulus pressures while the piston stays closed. The gas lift valve is then actuated for operation by increasing the tubing or annulus pressure beyond a predetermined limit of the first connection to release the piston to move open relative to the outlet. The movement of the piston releases the hold of the second connection on the check valve so the check valve can function normally as a one-way valve.

Abstract: Disclosed is a method of applying a biasing force against a piston in a valve as the piston moves along a piston stroke axis in a first direction and an opposing second direction, the piston having a first axial end that is a distal end of the piston, the method including: moving the piston along a piston stroke axis in the first direction and the opposing second direction, wherein while moving the piston along the piston stroke axis: applying a first biasing force in the second direction against the first axial end of the piston from a first spring, and applying a second biasing force in the second direction against the first spring from a second spring.

Abstract: A flow control device is configured to control fluid flow in an HVAC system. The flow control device includes a valve, an actuator configured to open and close the valve, and one or more sensors. The flow control device further includes a fault detection and correction agent configured to receive data from the one or more sensors, analyze the data according to a set of rules, and detect whether one or more faults have occurred. In response to detecting a fault, the fault detection and correction agent is configured to either operate the actuator to open or close the valve or initiate a corrective action to be taken by another device in the HVAC system.

Abstract: A wellbore apparatus includes a first component having a first element and a second component having a second element. The first component and the second component are connected by a multi-start thread connection and the first element and the second element being operatively connected to one another.

Abstract: A control valve assembly includes a body having a mud flow passage provided with a mud flow inlet and a mud flow outlet, a magnetic sleeve slidingly mounted to the body, and a solenoid mounted to the body adjacent the magnetic sleeve. The solenoid being selectively activated to shift the magnetic sleeve between a first position covering the mud flow outlet and a second position exposing the mud flow outlet allowing a pulse of mud to flow through the mud flow passage.

Abstract: A fluid injection valve comprising: a valve body including a first end having a first opening, a second end having a second opening, an outer surface and an inner surface defining a fluid pathway extending between the first end and the second end; a seat arranged along the fluid pathway; a restriction device selectively abutting the seat; a biasing member arranged in the fluid pathway abutting the restriction device; urging the restriction device against the seat; a biasing element having a biasing force urging the biasing member against the restriction device; and a magnet functionally connected to the biasing element, the magnet selectively forcing the biasing member axially outwardly of the restriction device against the biasing force.

Abstract: A crossover valve assembly for insertion into production tubing, or integral with production tubing, includes an outer housing, an inner production tube, a pilot section responsive to external pressure to open an activation passage above a pre-determined pressure, a power section responsive to pressure in the activation passage to open an injection opening; and a crossover valve responsive to pressure in the injection opening to open a crossover port, allowing fluid communication from outside the outer housing to within the inner production tube.

Abstract: A gas lift valve for use in a hydrocarbon well includes an elongated valve housing including an inlet port for receiving a fluid from an annulus of a hydrocarbon well, and an outlet port for delivering the fluid to a production tubing of the hydrocarbon well, and an elongated, internal valve body, which is movable along a longitudinal, central axis of the valve housing between a first end position and a second end position. In the first end position, a sealing surface of the valve body is in sealing contact with a valve seat surface of the valve housing prohibiting the fluid to flow from the inlet port to the outlet port, and in the second end position the sealing surface is separated from the valve seat surface allowing the fluid to flow from the inlet port to the outlet port. The outlet port is positioned at a terminal end of the valve housing.

Abstract: A method is provided for determining a discharge coefficient of a managed pressure drilling choke/valve as a function of valve opening position. The method comprises: a flow of air/gas through the choke/valve; measuring a velocity of the air/gas flow at an inlet of the choke/valve; and measuring a pressure drop of the air/gas flow across the choke/valve.

Abstract: A gas lift system may be installed within a well to allow gas lift operations where gas may be injected into the annular area of the well while producing fluids through the interior of the production tubular or upon demand may be reversed so that gas may be injected into the interior of the production tubular while producing fluids to the annular region of the well. In order to allow bidirectional production on demand two types of gas lift mandrels are installed as part of the production tubular. Both types of gas lift mandrels are configured such that gas lift valves are mounted to the exterior of the mandrels.

Abstract: Hydraulic pulses are produced each time that a pulse valve interrupts the flow of a pressurized fluid through a conduit. The pulse valve includes an elongate housing having an inlet configured to couple to the conduit to receive the pressurized fluid, and an outlet configured to couple to one or more tools. In the housing, a valve assembly includes a poppet reciprocating between open and closed positions, and a poppet seat, in which the poppet closes to partially block the flow of pressurized fluid through the valve. A bypass passage is configured to connect with a valve actuation vent port such that when the poppet closes the valve actuation pressure is less than the difference between the pressure up stream of the pulse valve and a pilot within the poppet moves between disparate positions to modify fluid paths within the valve.

Abstract: Device and method for welding a workpiece (2) having a welding torch (3) which can be mechanically coupled by a coupling element (4) to a hose bundle (5) for supplying the welding torch (3) at least with compressed air or with a protective gas, wherein compressed air applied to the coupling element (4) can be diverted by a diverting valve (10) provided in the coupling element (4) for actuating an actuator (7).

Abstract: A chemical injection mandrel for injecting chemicals into a Lower Tertiary well includes a chemical injector disposed on an exterior surface of a mandrel. The chemical injection mandrel connects to the production tubing such that the chemical injector portion of the chemical injection mandrel is disposed in the annulus between the production tubing and wellbore at or near the bottom of the hole. A floating production storage and offloading unit on the surface of the water may include a chemical injection pump that injects chemicals downhole via a chemical fluid line that runs in the annulus between the production tubing and the wellbore. The chemical fluid line connects to the chemical injector portion of the chemical injection mandrel and delivers chemicals to the interior passageway of the mandrel of the chemical injection mandrel where the chemicals mix with the production flow directed to the surface.

Abstract: A bellows valve includes a first bellows connected to a first cap member at one end and to a support member at the other end, and a second bellows connected to a second cap member at one end and to said support member at the other end. Respective first and second bellows cavities are thus formed inside each bellows. An orifice is arranged to fluidly interconnect the first and second bellows cavities, and a bellows-internal valve device is arranged to selectively open and close the orifice. The bellows-internal valve device includes first and second resilient members arranged on respective first and second sides of the support member and having respective portions being coupled to respective first and second holding members on the valve device. The bellows valve is useful in injection valves, such as gas lift valves.

Abstract: This disclosure relates to a system and method for applying a prediction of permeability of shale gas in porous media at different pressure conditions to a shale gas production. The method uses a molecular model that accounts for slippage and adsorption effects under the different pressure conditions including simulated gas flows in a large computational domain representing a sample of shale rock. This system and method provides a computationally efficient processing to determine permeability variations of shale gas with the different pressure conditions.

Abstract: A chemical injection mandrel for injecting chemicals into a Lower Tertiary well includes a chemical injector disposed on an exterior surface of a mandrel. The chemical injection mandrel connects to the production tubing such that the chemical injector portion of the chemical injection mandrel is disposed in the annulus between the production tubing and wellbore at or near the bottom of the hole. A floating production storage and offloading unit on the surface of the water may include a chemical injection pump that injects chemicals downhole via a chemical fluid line that runs in the annulus between the production tubing and the wellbore. The chemical fluid line connects to the chemical injector portion of the chemical injection mandrel and delivers chemicals to the interior passageway of the mandrel of the chemical injection mandrel where the chemicals mix with the production flow directed to the surface.

Abstract: A fluid injector is shown and described, including an injector housing and an armature which is coupled to a valve needle. A first bellow surrounds a first space. A first axial end of the first bellow is connected to the injector housing and a second axial end of the first bellow is connected to a first axial side of the armature. A second bellow surrounds a second space. A first axial end of the second bellow is connected to a second axial side of the armature and a second axial end of the second bellow is connected to the housing.

Abstract: There is provided a valve apparatus for disposition within a wellbore that is disposed within a subterranean formation, wherein the valve apparatus includes a housing including: (a) an outermost surface, (b) a fluid passage defined within the housing, (c) a port extending through the housing for effecting fluid communication between the reservoir and the fluid passage, (d) a first groove disposed on the outermost surface and defining a first fluid channel, for conducting reservoir fluid to the port, and extending from an outermost surface portion of the outermost surface to the port, wherein the minimum distance between the outermost surface portion and the port is at least two (2) inches, and a closure member displaceable relative to the port for effecting opening and closing of the port.

Abstract: A rotary position indicator is configured to integrate with an actuator, wherein the rotary position indicator includes a first shaft and a second shaft in a nested arrangement, wherein the first and second shafts are configured to transfer linear motion of an actuation component of the actuator into a first rotational motion and a gear box configured to couple to the actuator, wherein the gear box is configured to transfer the first rotational motion to a second rotational motion of a position shaft.

Abstract: A swing chamber pump can be situated within a horizontal wellbore for pumping wellbore fluids to surface using a power gas. The pump has two fluidly independent and separate pump chambers, each having a self-orienting gas valve and a self-orienting fluid outlet. A switch alternately directs the power gas into a chamber for conveying stored fluid therein to a production string, while the other chamber passively fills with wellbore fluids. A latency device converts a continuous motion into a sudden snap actuation of the switch and controls a period of delay between the actuation of the switch.

Abstract: The present invention relates to the design of a nozzle valve (GL) for gas lifting that can be used in place of conventional orifice valves (VO). The gas lift nozzle valve (GL) according to the present invention has a body (1) with admission orifices (2), and, immediately below these, a slight recess (3) in the internal diameter of the body where a convergent nozzle (4) is fitted to regulate the gas flow passing through the inside of the nozzle valve (GL) towards the outlet (5) of the latter.

Abstract: A downhole energy transmission system is described. The system can include a tubing string having a number of tubing pipe disposed within an annulus formed by a casing string disposed within a wellbore, where the tubing string has at least one wall forming a cavity. The system can also include a remote electrical device disposed within the cavity of the tubing string at a first location. The system can further include a first stripline cable disposed on an outer surface of the tubing string, where the first stripline cable transmits a first electromagnetic directional traveling wave received from an energy source. The system can also include a second stripline cable disposed adjacent to the first stripline cable at the first location, where the second stripline cable is electrically coupled to the remote electrical device.

Abstract: The present invention applies to flowing wells. Within a flowing well, production tubing moves fluid upward under immense pressures and is greatly exposed to damage, either accidental, or intentional. Recently, there is increased concern in protecting our production wells from damage, either natural or man-made. The present invention is designed to address the problems of controlling hydrocarbon, and fluid flow, through production tubing after the production tubing is compromised by penetration or severance.

Abstract: An isolation tool is presented for use in fluidly isolating first and second sections of tubing and more typically to a bleed valve/port of a gas lift mandrel. The isolation tool is configured for disposition within an interior of a gas lift mandrel. The isolation tool includes one or more resilient elements that may be compressed to expand to and seal against an inside surface of the tubing/mandrel. Such expansion and sealing by the resilient element(s) fluidly isolates sections of the tubing/mandrel. The isolation tool may be removed through the tubing when desired by releasing the compression of the resilient element(s) such that the resilient element(s) disengage the inside surface of the tubing/mandrel.

Abstract: A circuit may include a source input for receiving an input voltage, a load output for generating an output voltage, a load switch coupled at its source to the source input and coupled at its drain to the load output which is configured to pass the input voltage to the load output when the load switch is activated, an enable input for receiving an enable voltage which is indicative of whether the load switch is to be activated or deactivated, and a leakage reduction circuit coupled between the enable input and a gate of the load switch, wherein the leakage reduction circuit is configured to electrically couple the gate of the load switch to the source of the load switch such that a source-to-gate voltage is maintained below a threshold voltage for activating the load switch when the enable voltage indicates that the load switch is to be deactivated.

Abstract: A gas lift valve assembly includes a housing, a check valve, and a fluid flow barrier. The housing defines an inlet port, an outlet port, and a main flow passage providing fluid communication between the inlet port and the outlet port. The main flow passage has an upstream end and a downstream end. The check valve includes a sealing element disposed at the downstream end of the main flow passage, and a valve member configured to sealingly engage the sealing element. The valve member is movable between an open position in which fluid flow is permitted in a downstream direction, and a closed position in which the valve member inhibits fluid flow in an upstream direction. The fluid flow barrier is disposed within the main flow passage, and is configured to direct fluid flow away from the sealing element when the valve member is in the open position.

Abstract: A gas lift valve system for a wellbore within a subterranean formation can include a power source that generates power, and a delivery system disposed within the wellbore and electrically coupled to the power source, where the delivery system delivers the power generated by the power source. The system can also include at least one gas lift valve assembly disposed within the wellbore and electrically coupled to the delivery system, where the at least one gas lift valve assembly receives the power from the delivery system, where at least one valve, when in a position other than a fully closed position, allows a control medium to flow from an inlet channel to an outlet channel, where the outlet channel empties into the cavity of the delivery system.

Abstract: A pressure compensating system that minimizes the pressure differences across multiple shaft seals in a rod driven downhole pumping apparatus. The system balances the pressures across the seals by forcing the external pressure of all seals and compensators to be equal to the highest external pressure in the apparatus, made possible by the appropriate use of labyrinth-type seals. A bleed valve assembly which allows free flow of fluid into the pressure compensating system, but restricts the rate of fluid outflow from the system in case of shut-in of the pump, to limit the potential of rapid opening and closing of the mechanical shaft seals.

Abstract: A method for determining the complex response of a permeable stratum at the bottom of a producing well, the well comprising a well head fitted with an outlet valve and the bottom of the well comprising a height-adjustable pressure and flow rate sensor, comprising the following steps: periodically altering the degree to which the outlet valve is open, and, while the alteration is in progress: —measuring the pressure and flow rate in the well at the top/bottom of the stratum for a certain number of periods of alteration, after a certain delay; and —measuring the pressure and the flow rate in the well at the bottom/top of the stratum for a certain number of periods of alteration, immediately after the positioning of the sensor.

Abstract: A manifold trailer and pairing system are disclosed. The pairing system has a non-transitory computer readable medium storing processor executable code. The processor executable code causes a processor to receive identification data indicative of a first low pressure valve and a second low pressure valve connected to a low pressure manifold of a manifold trailer; receive identification data indicative of a first high pressure valve and a second high pressure valve connected to a high pressure manifold of the manifold trailer; and receive identification data indicative of a plurality of pumps. The processor determines a first association indicative of a first fluid connection between the first low pressure valve and a selected pump and a second association indicative of a second fluid connection between the selected pump and a selected high pressure valve. The processor populates the non-transitory computer readable medium with information indicative of the first and second associations.