A surface safety valve for a well system includes a main valve body with a central bore through it. The main valve body has a centerline axis and is configured to be connected at a surface location above a surface of the Earth to a surface assembly of the well system and to receive through the central bore a flow of wellbore fluid from a subterranean zone conveyed by a production tubing. A gate is positioned within the main valve body and is configured to move from an open position in which the gate does not block flow of wellbore fluid through the central bore to a closed position in which the gate blocks flow of wellbore fluid through the central bore. The gate travels from the open position to the closed position along a gate movement axis perpendicular to the centerline bore axis. The gate includes a gate front end positioned on a first side of the centerline bore axis and a gate back end positioned on a second side of the centerline bore axis opposite the first side. The surface safety valve also includes an actuator positioned on the first side of the centerline bore axis. The actuator is configured to selectively push the gate towards the open position. The safety valve also includes a spring enclosed within the main valve body and positioned on the second side of the centerline bore axis. The spring is connected to the gate back end and is configured to bias the gate towards the closed position.

Systems and methods for generating and a controller for controlling generation of geothermal power in an organic Rankine cycle (ORC) operation in the vicinity of a wellhead during hydrocarbon production to thereby supply electrical power to one or more of in-field operational equipment, a grid power structure, and an energy storage device. In an embodiment, during hydrocarbon production, a temperature of a flow of wellhead fluid from the wellhead or working fluid may be determined. If the temperature is above a vaporous phase change threshold of the working fluid, heat exchanger valves may be opened to divert flow of wellhead fluid to heat exchangers to facilitate heat transfer from the flow of wellhead fluid to working fluid through the heat exchangers, thereby to cause the working fluid to change from a liquid to vapor, the vapor to cause a generator to generate electrical power via rotation of an expander.

A well tool assembly to cut a wellhead gate valve by water jetting includes a water jetting head lowered into a wellhead tree coupled to a wellbore. The head includes a housing, an orifice plate and a jetting port. The housing defines a tubular region to receive water. The orifice plate is positioned within the tubular region downstream of a first end and upstream of a second end of the housing, and defines an orifice to accelerate a flow rate of the water received at a first flow rate upstream of the orifice plate to a second flow rate, greater than the first, downstream of the plate. At the second flow rate, the water can mill a gate valve within the wellhead. The jetting port is downstream of the orifice plate, and can receive the water at the second flow rate and guide the received water to the gate valve.

An apparatus, system and related methods for controlling a pressurized flow from a high or low pressure system. An actuated sand dump system and related methods include a first valve positioned downstream of a high or low pressure system, a second valve positioned downstream of the first valve, a choke positioned between in the first and second valves, a plurality of pressure gauges, and a control unit operable to automatically open and close the first and second valves and the choke in a predetermined sequence, upon initiating the predetermined sequence, and in response to pressure measurements from the plurality of pressure gauges.

A multi-function valve is disclosed. The multi-function valve including a housing having an internal bore therein; a spool valve positioned in the internal bore, the spool valve configured to seal and direct a flow of compressed air and exhaust; and a spring operably connected to the spool valve, the spring biasing the spool valve in a normally open exhausting position.

A flow control module includes an inlet hub coupled to a first flow passage having a first flow bore, a flow meter associated with the first flow bore and positioned for top-down fluid flow, a choke disposed in a second flow passage having a second flow bore, the second flow passage coupled to a distal end of the first flow passage, and an outlet hub coupled to a distal end of the second flow passage, the outlet hub facing in a different direction from the inlet hub.

Embodiments of systems and methods for generating power in the vicinity of a drilling rig are disclosed. During a drilling operation, heat generated by drilling fluid flowing from a borehole, exhaust from an engine, and/or fluid from an engine's water (or other fluid) jacket, for example, may be utilized by corresponding heat exchangers to facilitate heat transfer to a working fluid. The heated working fluid may cause an ORC unit to generate electrical power.

A hydraulic fracturing system can include valve apparatuses that control the delivery of fluid to high-pressure pumps that supply the fluid to a wellhead. The valve apparatuses can receive electronic signals from a control system to regulate the flow rate of the fluid to the high-pressure pumps. In one or more examples, the flow rate of the fluid can be controlled such that proppant in the fluid remains in solution.

A flow measurement apparatus can include a main flow passage, a variable flow restrictor, a bypass flow passage having an inlet connected with the main flow passage upstream of the variable flow restrictor and an outlet connected with the main flow passage downstream of the variable flow restrictor, and a mass flowmeter connected in the bypass flow passage between the inlet and the outlet. A method can include connecting a flow measurement apparatus, so that a fluid flow in a well also flows through the flow measurement apparatus, and varying a restriction to the fluid flow through the variable flow restrictor in response to a change in a flow rate of the fluid flow.

A valve block may be assembled, in a controlled environment, a valve block to be modular and purpose built for a specific application. The specific application may be an operation to be performed at a well site. The modular purpose built valve block may be function tested, in the controlled environment. Additionally, the modular purpose built valve block may be pre-packaged, in the controlled environment, to have a digital system to operate and automate the modular purpose built valve block. Further, the modular pre-packaged purpose built valve block may be deployed to the well site, and the modular pre-packaged purpose built valve block may be fluidly coupled to a wellhead. The modular pre-packaged purpose built valve block may be operated to perform the operation at the well site.