Abstract:
Method in an oil and/or a gas production system comprising a plurality of oil and/or gas wells each producing a multiphase fluid stream, adapted for predicting change in produced fluids resulting from change in manipulated variables. Fitted model parameters which express the relationship between the change in manipulated variables and the produced fluids are determined from a set of historical production measurements. The method comprises the steps of: a. choosing a model structure which predicts change in produced fluids as a function of the change in manipulated variables, where the predicted change in produced fluids depends on the value of fitted model parameters; b. determining fitted model parameters so that predictions of produced fluids match said historical production measurements as closely as possible; c. determining a quality tag that describes the uncertainty of said predictions of change in produced fluids.
Abstract:
The present invention relates to a method in an oil and/or a gas production system comprising a plurality of oil and/or gas wells and means adapted for oil and/or gas production parameter testing. The method is adapted to compare a plurality of options related to the oil and/or gas throughput in the oil and/or gas production system, and includes the steps of: a) drawing a plurality of parameter samples from a parameter distribution; b) generating, for each parameter sample, a performance measure by using said parameter sample and a characterizer for each of said options, and c) generating an aggregated performance measure for each of said options by using said performance measures. The parameter distribution and the generation of the performance measure are preferably obtained by a Monte Carlo simulation by using historical and/or online measured and/or estimated data obtained from the oil and/or gas production system. The said data preferably includes at least oil flow rate, gas flow rate, water flow rate, liquid flow rate, gas-oil ratio, water-oil ratio, pressure, temperature, or fluid composition, or any combination thereof.
Abstract:
The present invention relates to a method for detecting water breakthrough in a well production. According to the invention the model, of which the accuracy is known, will receive three of the four following parameters: inlet pressure, inlet temperature, outlet pressure, outlet temperature. The model comprises a three-phase flash model including heat of evaporation of water and partial pressure of water with or without dissolved components lowering the vapour pressure such as salt and/or alcohol. Based on the said three parameters the model computes the fourth parameter, whereupon the actual fourth parameter is measured and compared to the computed fourth parameter. If the deviation between the measured and the computed parameter is considerably larger than that which can be explained from the level of confidence of the selected model and uncertainty of measurement, it can be concluded that a water breakthrough has actually occurred.
Abstract:
An electrostatic separator intended for separation of liquid phase systems, made up of mixtures of liquids of various electrical permittivity. In particular, the separator is intended for separation of an oil-and-water emulsion. The electrostatic separator contains a vessel, inside which there is suspended a system of electrodes energised from an external voltage source. The electrode system comprises at least one pair of conducting plates (8), which is attached to a supporting frame (7) and electrically connected with the high voltage winding of a feeding transformer (9), which is placed in the supporting frame (7). The supporting frame (7) is preferably a casting of an insulating material. The conducting plates (8) of the electrode system are preferably connected to the winding of the feeding transformer (9) through a capacitive electrical connection.
Abstract:
The invention relates to an improved method in an industrial safety system for controlling a process or equipment. An industrial safety system comprises components with safety devices wherein the safety system enables signals to be generated as a result of an event or alarm. The method and system uses a cause and effect matrix (CEM) with automated links between each event or alarm and an effect or an action to be taken upon receipt of said event or alarm signal due to the event. In an online view (1, 51, 61) of the improved cause and effect matrix, at least one effect cell (16) of the cause and effect matrix is arranged with a first executable link for a device (14) represented by the at least one effect cell. The online viewer of the cause and effect matrix is further arranged with an application for generating and displaying a first control arranged to display a visual marker (21) in the case where the at least one effect cell has received a signal to trip a device (14) linked to the at least one effect cell. An executable link or a faceplate (50) can be opened from the on-line view displaying the marked at least one effect cell and used to operate the device (14) of the effect so marked. A system and a computer program are also described.
Abstract:
The invention relates to an improved method in an industrial safety system for controlling a process or equipment, which industrial safety system which includes components with safety devices. The safety system enables signals to be generated as a result of an event or alarm, where the method comprises creating an automated link between the event or alarm and an effect or an action to be taken upon receipt of said event or alarm signal due to the event. The method includes configuring one or more links between the event and the input, thus forming a cause and effect matrix (CEM), and also generating a control code using said cause and effect matrix (1) for subsequent download of said control code to at least one process controller (4-6, 31-33) whereby a control signal is subsequently generated by at least one safety controller to initiate the action or effect. The method in particular includes calculating a controller load for a safety controller (4-6, 31-33) processing said control code based on said cause and effect matrix (1) for said at least one safety controller such that the calculated processing load is not exceeded in any safety controller.
Abstract:
The invention refers to an explosion protection system for electrical apparatuses and machineries, such as manipulators or industrial robots, located in hazardous environments, i.e. environments containing explosive concentrations of inflammable gases, dusts or vapours, comprising means for applying internal pressurized air into an explosion proof enclosure and that has a purging system and electrical components, such as motors, relays, IC-boards, cables etc. The invention is achieved by, that a flow-and pressure sensor is arranged as an integrated unit and designed to stand high dynamic forces by having low inertia, balanced arrangement of moving parts and a movement guide, e.g. an axle with a support guide, with low friction.
Abstract:
An insulated hose for a high voltage paint application apparatus comprising an inner hose containing a fluid or paint charged at a high voltage. The inner hose 1 is arranged inside at least one second insulating layer 2. A system for applying paint or other fluid materials at a high voltage is also described.
Abstract:
A robot controller for an industrial robot is described. The robot controller is a portable controller of the TPU Teach Pendant Unit type and comprises control means for moving a robot in three or more degrees of freedom. The TPU comprises a visual display and selection means associated with programming or controlling a robot. In other aspects of the invention a system comprising a robot and a control unit and the TPU are described. A computer program of the TPU for carrying out the method is also provided.
Abstract:
Sensor failure in an oil and gas production system is monitored and detected by checking the consistency of the measurements of the sensor in question using a computer-based process model with the measurements of the other sensors in the system. The present invention also generates a back-up value for a failing sensor with the process model by identifying the value that is most consistent with the measurements of the other sensors in the system.