Abstract: Configurations and methods for subsea hydrocarbon production at high pressure wells are contemplated in which production control is achieved by implementing two choke valves in series between the wellhead and the riser. The first production choke reduces pressure from well pressure to a reduced pressure, while the second production choke further reduces the pressure from the reduced pressure to riser pressure. The first production choke is preferably coupled to the production tree, and the second production choke is coupled to production tree, a subsea pipeline-end device (e.g., PLET or PLEM), a well jumper, or a flowline jumper.

Abstract: The present invention relates to a medical emergency care shelter, more specifically, to a field emergency shelter for fast minimally invasive cardiovascular surgery. The field emergency shelter for fast minimally invasive cardiovascular surgery includes a fixed central shelter body 1. The poison filter 6, purifying air conditioner 7, and heating apparatus 8, 9 are installed on the fixed central shelter body 1. A door 12 is installed on the rear wall of the fixed central shelter body 1. The retractable linkages 13 are installed around the door 12. Two extendable shelter bodies are connected to the left and right sides of the fixed central shelter body, respectively. The extendable shelter bodies 2 have an extendable structure. Doors 4 are installed on the side wall of the extend shelter bodies 2. Each of the extendable shelter bodies 2 has hydraulic cylinder 3 and an extendable unit. The working end of the hydraulic cylinder 3 is connected to one end of the foldable unit.

Abstract: The present invention relates to a medical emergency care shelter, more specifically, to a field emergency shelter for fast minimally invasive cardiovascular surgery. The field emergency shelter for fast minimally invasive cardiovascular surgery includes a fixed central shelter body 1. The poison filter 6, purifying air conditioner 7, and heating apparatus 8, 9 are installed on the fixed central shelter body 1. A door 12 is installed on the rear wall of the fixed central shelter body 1. The retractable linkages 13 are installed around the door 12. Two extendable shelter bodies are connected to the left and right sides of the fixed central shelter body, respectively. The extendable shelter bodies 2 have an extendable structure. Doors 4 are installed on the side wall of the extend shelter bodies 2. Each of the extendable shelter bodies 2 has hydraulic cylinder 3 and an extendable unit. The working end of the hydraulic cylinder 3 is connected to one end of the foldable unit.

Abstract: Configurations and methods for subsea hydrocarbon production at high pressure wells are contemplated in which production control is achieved by implementing two choke valves in series between the wellhead and the riser The first production choke reduces pressure from well pressure to a reduced pressure, while the second production choke further reduces the pressure from the reduced pressure to riser pressure. The first production choke is preferably coupled to the production tree, and the second production choke is coupled to production tree, a subsea pipeline-end device (e.g., PLET or PLEM), a well jumper, or a flowline jumper.