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Services > Well Testing Services >Surface Testing Services
Surface Testing Services
 

Surface Well Testing Package
The surface well testing is mainly to provide a safe control when the formation fluid flows to the surface, and to process the formation fluid. Through the separator we can obtain single phase fluids and flow rates and at same time we can obtain wellhead pressure and temperature, fluid samples, properties of fluids and other data which are used for evaluating the reservoir. The following is a typical surface testing layout schematic. The schematic shows how to process the formation fluid at the surface. A surface testing package may include but not limited to: surface test tree, coflexip hose, data header, choke manifold, surface safety valves (main valve, wing valve & EZ valve), heater (steam exchanger or indirect heater), three phase separator, surge tank, gauge tank, fluids samplers, field laboratory, emergency shut down system (ESD) and multi-sensor relief valve (MSRV), data acquisition system (DAS), transfer pump, oil burners, and pipe works.
we can provide full sets of surface equipment packages to meet different the requirements of customers.
Typical working pressures for upstream equipment, sour gas service, are 5,000, 10,000 and 15,000 psi.

Functions of Main Equipment
The surface test tree is installed on top of the test string above the rig floor and operated as a production tree on an exploration well. The data header provides many ports for installing instruments to read or record relevant data (pressure and temperature), taking samples for laboratory analysis,
 
 
connecting chemical injection pump to inject chemicals into the well effluent to prevent hydration, aiding in the separation or protecting equipment and piping against corrosion. A choke manifold provides a safe control, maintains a suitable bottom flowing differential pressure to protect the reservoir and lowers the downstream pressure
and flow rate to a safe level to protect down stream equipment. A heater is used to reheat the process fluid after it cools due to pressure drop expansion across the choke. A separator is used to separate the well effluent into three phases: oil, gas and water and measure their flow rates. A gauge tank and surge tank are used to calibrate a liquid flow meter or measure low production flow rates. A transfer pump can be used to pump liquid to a storage tank, oil burner, or pipeline. Burners are used to dispose of the crude oil in a clean efficient manner. A DAS system can be used to gather automatically surface test data on a real-time basis with high-resolution transducers, on-site computers and special data processing software. A laboratory can be used to obtain oil API degree, gas gravity, BS&W, Cl£­, H2S & CO2 concentrations in gas, oil viscosity and pour point, etc. An ESD system is used to shut-in the well in case of emergency.
 
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