摘要:
Subsea apparatus and a method for sampling and analysing fluid from a subsea fluid flowline proximate a subsea well is provided, wherein the apparatus comprises at least one housing located in close proximity to said subsea fluid flowline; at least one fluid sampling device located in the housing in fluid communication with a said subsea fluid flowline for obtaining a sample of fluid from the subsea fluid flowline; at least one fluid processing apparatus located in the housing in fluid communication with said subsea fluid flowline for receiving and processing a portion of the fluid flowing through said fluid flowline or in fluid communication with the fluid sampling device, for processing the sample of fluid obtained from the subsea fluid flowline for analysis, while keeping the sample of fluid at subsea conditions; a fluid analysis device located in the housing, the fluid analysis device being in fluid communication with the fluid processing device and/or with the fluid sampling device, the fluid analysis device being used for analysing said sample of fluid or the processed sample of fluid to generate data relating to a plurality of properties of said sample of fluid and communicating said data to a surface data processor or to at least one other subsea apparatus; and conveying means included in the housing for conveying the housing means from one subsea fluid flowline to another subsea fluid flowline or for conveying the housing to the surface.
摘要:
A downhole fluid analysis tool capable of fluid analysis during production logging that includes a phase separator and a plurality of sensors to perform analysis on the fluids collected at a subsurface location in a borehole.
摘要:
According to the invention, a system for determining at least one property of a fluid flow through a conduit is disclosed. The system may include a bearing, at least one blade member, and a monitoring device. The bearing may be coupled with an interior of the conduit, and may include an inner race, where the inner race may rotate. The blade members may be coupled with the inner race, and may extend from the inner race toward the interior of the conduit. The blade members may rotate when a fluid flows through the interior of the conduit, and the inner race of the bearing may rotate when the blade members rotate. The monitoring device may be configured to determine a rate of rotation of the blade members. At least one property of the fluid flow may be determined based at least in part on the rate of rotation.
摘要:
A method of sampling a multi-phase fluid stream is provided which comprises the steps of: sampling, with a sampling probe, a portion of the fluid stream; measuring the flow rate of said sampled portion; and measuring, independently of the sampling step, the total flow rate of the fluid stream, wherein the flow rate of the sampled portion is controlled according to the ratio of the flow rate of the sampled portion to the flow rate of the fluid stream, in order to obtain substantially isokinetic sampling of the fluid stream. The method may provide isokinetic sampling to an accuracy of 5% or less and preferably only samples a small portion of the fluid stream. The method has particular application for high rate condensate gas wells. A corresponding sampling system is provided which has particular application in the sampling of streams from well-heads. A flow conditioner for use with sampling methods and systems is also provided, the flow conditioner being a pipe section including: a swirl inducing section; a flow straightener, and an orifice plate.
摘要:
Systems and methods are disclosed for measuring and/or monitoring concentrations of a dispersed phase in a fluid. A wettable surface may be used that is configured to be selectively wettable by the dispersed phase in the fluid being tested/monitored and the amount of or the rate of change of the wetting/deposition of the dispersed phase on the wettable surface is sensed and used to monitor the concentration of the dispersed phase.
摘要:
A flow meter for measuring the velocity of surrounding fluid, comprising a rotatable member rotatably coupled to a shaft member, wherein the shaft member comprises a measuring electrical circuit comprising an AC power supply and a primary coil, the rotatable member comprising a passive non-permanent magnet marker responsive to a magnetic field, the arrangement being such that when the circuit is powered by the AC supply the coil generates a magnetic field and the marker is positioned on the rotatable member such that rotation of the rotatable member in response to fluid drag on the member causes the distance between the marker and the coil to oscillate, the marker interacting with the magnetic field at its closest approach to the coil, thereby to cause a measurable electrical response in the circuit. Thus, the speed of rotation of the rotatable member can be determined by measuring an electrical response in the circuit without physically contacting the rotatable member and without involving a permanent magnet is provided.
摘要:
A method of sampling a multi-phase fluid stream is provided which comprises the steps of: sampling, with a sampling probe, a portion of the fluid stream; measuring the flow rate of said sampled portion; and measuring, independently of the sampling step, the total flow rate of the fluid stream, wherein the flow rate of the sampled portion is controlled according to the ratio of the flow rate of the sampled portion to the flow rate of the fluid stream, in order to obtain substantially isokinetic sampling of the fluid stream. The method may provide isokinetic sampling to an accuracy of 5% or less and preferably only samples a small portion of the fluid stream. The method has particular application for high rate condensate gas wells. A corresponding sampling system is provided which has particular application in the sampling of streams from well-heads. A flow conditioner for use with sampling methods and systems is also provided, the flow conditioner being a pipe section including: a swirl inducing section; a flow straightener; and an orifice plate.
摘要:
Disclosed is a flow separator, typically for use in separating liquid from gas in a flowing mixture of liquid and gas, e.g. water, oil and gas in a hydrocarbon well production fluid pipeline, the separator having a swirl generator disposed at the inlet to a cylindrical separation chamber and the separation chamber having an elongate liquid extraction slot formed along its wall, such that in operation the swirling flow centrifugally pushes the liquid towards the wall of the separation chamber to exit the separation chamber through the extraction slot into a collection chamber which may allow the return of the extracted liquid back into the main flow using a U-shaped tube.
摘要:
Methods of measuring flow properties and flowmeters having an upstream transceiver and a downstream wave transceiver, each positioned with a wave emitting surface exposed to a fluid flowing in a conduit are described, the transceiver being separated by a length L along the conduit and adapted to receive wave signals traveling in flow direction and opposite to the flow direction, respectively, and an electronic processor for extracting from travel time measurements of the wave signals flow characterizing parameters, the transceivers being adapted to generate tube waves, particularly in the audible frequency range, in the conduit and used to determine the travel time of the tube waves between the upstream transceiver and the downstream wave transceiver.
摘要:
A backflow and flow rate control system, comprising: a flow restrictor; a flow regulator chamber located down-stream of the flow restrictor; a control chamber configured to receive a portion of the fluid from a location upstream of the flow restrictor; a moveable element with no sliding parts positioned between the control chamber and the flow regulator chamber, wherein the moveable element is configured to move in response to a difference in pressure between the flow regulator chamber and the control chamber; a flow rate regulator configured to control the flow rate of the fluid in response to the movement of the moveable element; and a non-return regulator coupled with the moveable element and configured to control back-flow of the fluid.