Abstract: A system for injecting fluids into a well having a fluid supply line that is connected to a mandrel at the top of the production tree. The system is designed so that all components of the system are packaged together and run to the production tree in one run. The production tree is designed to provide a pathway for the fluid to travel from the mandrel to the production bore within the tree, and then into the production tubing of a well.

Abstract: A wellhead assembly made up of a wellhead housing, a production tree mounted on the wellhead housing, tubing suspended into a wellbore from within the wellhead housing, and an annulus between the tubing and the wellhead housing. A shuttle valve is provided within a tubing hanger that supports the tubing from within the wellhead housing. An accumulator is disposed in the annulus that is in fluid communication with a closed position port on the shuttle valve. Pressure is maintained in the accumulator for closing the shuttle valve when a force for opening the valve is removed.

Abstract: A system for injecting fluids into a well having a fluid supply tine that is connected to a mandrel at the top of the production tree. The system is designed so that all components of the system are packaged together and run to the production tree in one run. The production tree is designed to provide a pathway for the fluid to travel from the mandrel to the production bore within the tree, and then into the production tubing of a well.

Abstract: A vertical subsea tree is operated by a subsea control module supplied with hydraulic and electric power from the surface through the vertical subsea tree. A landing sub is communicatively coupled to the surface with a landing sub umbilical and run to the vertical subsea tree. The landing sub engages mating penetrations on an upper portion of the master valve block of the vertical subsea tree to supply flow passages extending from the penetrations to the subsea control module through the master valve block. The subsea control module is then operated through the landing sub umbilical to control operation of the vertical subsea tree.

Abstract: A wellhead assembly made up of a wellhead housing, a production tree mounted on the wellhead housing, tubing suspended into a wellbore from within the wellhead housing, and an annulus between the tubing and the wellhead housing. A shuttle valve is provided within a tubing hanger that supports the tubing from within the wellhead housing. An accumulator is disposed in the annulus that is in fluid communication with a closed position port on the shuttle valve. Pressure is maintained in the accumulator for closing the shuttle valve when a force for opening the valve is removed.