The field monitoring forecast system of soft firm arm single buoy mooring system under waterTechnical field
Patent of the present invention relates to oil field operation security fields, the particularly field monitoring of soft firm arm-type single buoy mooring system and forecast under Bohai Sea Waters.Specifically, the present invention relates to the field monitoring forecast system of soft firm arm single buoy mooring system under water.
Technical background
FPSO (Floating Production Storage and Offloading, i.e. floating storage and offloading device) is one of Main Patterns of marine petroleum development, is widely used in crude production, the storage and outer defeated in each marine site, the world.Wherein, single buoy mooring system is to be related to the important step that can whole FPSO normal operation, once FPSO single buoy mooring system is damaged, the safety of whole piece FPSO will be subject to great threat, gently cause stopping production closing well, bring serious economic loss, heavy have oil spilling danger, may cause eco-catastrophe.
Because marine environment condition is further severe, single buoy mooring system accident/fault that extreme weather causes occurs again and again in recent years, brings severe challenge to field produces and installation security.For in-service FPSO fleet, if can accomplish to monitor accurately and reliably and evaluate to its single buoy mooring system, not only can accurately judge the security of its single buoy mooring system, contingent destruction is given warning in advance, can be again task management person the safety information of mooring is promptly and accurately provided, there is prediction scheme for it and carry out safety management, take precautions against in possible trouble, guarantee FPSO job safety.
Summary of the invention
In order to overcome the deficiencies in the prior art, a kind of science is provided and is effectively applicable to the field monitoring forecasting technique of soft firm arm single buoy mooring system under Water of Bohai Bay, can be to the wind in FPSO operation marine site, wave, stream, temperature, humidity, air pressure environmental baseline, FPSO bow to, the spacing of FPSO and single-point jacket, FPSO six-freedom motion, mooring anchor chain stressed, the moment of torsion cylinder strain of single-point jacket underwater portion and torque measurement, single-point structural vibration, the real-time status of single-point jacket etc. is monitored, stressed to single buoy mooring system, hull six-freedom motion and bow to etc. the parameter operating mode that transfinites carry out early warning, and can utilize software of forecasting to provide comparatively accurate forecast to mooring response.
For this reason, the technical scheme that the present invention takes is, the field monitoring forecast system of soft firm arm single buoy mooring system under water: comprising:
Wave ocean current instrument is measured, for obtaining the flow direction, flow velocity, wave height, wave to, cycle, wave spectrum parameter;
Anemoclinograph is used for obtaining wind speed, wind direction data;
Humiture atmospheric pressure all-in-one, for obtaining temperature, humidity, pneumatic parameter;
Two independent gps systems of two covers of longitudinally arranging along FPSO for obtain FPSO towards;
GPS base station be arranged on the GPS movement station on FPSO, do difference processing for the locating information of utilizing the two and measure distance between FPSO and single-point jacket;
Inertial Measurement Unit (IMU), for FPSO six-freedom motion measuring, wherein the translation of tri-directions of FPSO is measured by the accelerometer in Inertial Measurement Unit, and the rotation of three directions is measured by three gyroscopes;
Fiber Bragg grating strain sensor is for measuring mooring force size, mooring force angle measured with mooring cable attitude-measuring sensor;
Fiber Bragg grating strain sensor and resistance sensor are for measuring single-point jacket underwater portion moment of torsion cylinder moment of torsion and strain thereof;
Acceleration transducer, for vibrating and measure single-point jacket structure;
The alternate channel of described single-point state monitoring and measuring application all the sensors access central control system (FOXBORO) is measured, and realizes collection, transmission, demonstration and the processing of all measurement data.
Compared with the prior art, technical characterstic of the present invention and effect:
Adopt the method for real time monitoring, the parameter such as position and attitude to each device in marine environment condition and system is monitored, carrying out mechanical analysis in conjunction with correlation theory again, soft firm arm single buoy mooring system is under water carried out to safety assessment, is a kind of research method of efficient science.
Brief description of the drawings
Fig. 1,2,3 is patent monitoring equipment layout schematic diagram of the present invention.
Fig. 1 is that wave stream instrument is arranged schematic diagram.
Fig. 2 is measuring wind wind indicator, humiture atmospheric pressure all-in-one, GPS movement station, Inertial Measurement Unit, equipment layout schematic diagram.
Fig. 3 is GPS base station, fiber Bragg grating strain sensor, resistance-type strain rosette, acceleration transducer equipment layout schematic diagram.
Accompanying drawing mark:
1, wave ocean current instrument 2, anemoclinograph 3, humiture atmospheric pressure all-in-one 4, base station GPS 5, station GPS 6, Inertial Measurement Unit (IMU) 7, fiber Bragg grating strain sensor 8, mooring cable attitude-measuring sensor 9, resistance-type strain rosette 10 acceleration transducers
Embodiment
Patent of the present invention provides a kind of field monitoring forecast system that is applicable to soft firm arm single buoy mooring system under Water of Bohai Bay, comprise the monitoring of wave, ocean current, the monitoring of wind speed, wind direction, the measurement of temperature, humidity, air pressure, FPSO towards, FPSO and single-point spacing, the monitoring of FPSO six-freedom motion, mooring force is measured, key point stress measurement, the torque measurement of single-point moment of torsion cylinder, Optimization Software is carried in single-point structural vibration measurement and data processing, forecast, assembling.For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Single-point is made up of single-point jacket, under water moment of torsion cylinder and YOKE (the soft firm arm of mooring under water).Single-point is connected with FPSO by mooring anchor chain.
Described wave, the wave ocean current instrument (1) that ocean current application is placed in platform jacket bottom are measured, can obtain the flow direction, flow velocity, wave height, wave to parameters such as, cycle, wave spectrums, its data are by cable access platform Central Control Room industrial computer.
Described wind speed, the anemoclinograph (2) that wind direction application is placed in hull lofty perch are measured, can obtain one-minute average wind speed, a hourly average wind speed, maximum three second the parameter such as gustiness, its data access in FPSO Central Control Room by cable.
Described temperature, humidity, air pressure (3) application are placed in the wait humiture atmospheric pressure all-in-one of roof of hull and measure, and can obtain the parameters such as temperature, humidity, air pressure, and its data access in FPSO Central Control Room by cable.The sensor of humiture atmospheric pressure all-in-one is sent to data in humiture atmospheric pressure all-in-one main frame by signal and communication cable after collecting humiture atmospheric pressure data.Humiture atmospheric pressure all-in-one main frame is sent to data in FPSO Central Control Room main frame by signal and communication cable.
Two cover independent GPS (4) systems of longitudinally arranging along FPSO towards two of application of described FPSO are measured, by data radio station signal transmission.Two gps antennas and radio antenna are arranged on the stern roof of waiting, and gps signal feeder line is directly applied to Inertial Measurement Unit (IMU) host side, and data radio station signal wire is directly applied to radio station main frame.
The GPS base station (5) that the application of described FPSO and single-point spacing is arranged on single-point top is done difference processing with the locating information that is arranged on the GPS movement station on FPSO and is measured.
Described FPSO six-freedom motion measuring is applied the Inertial Measurement Unit (IMU) (6) being arranged in life building and is measured, wherein the translation of tri-directions of FPSO is measured by the accelerometer in Inertial Measurement Unit, the rotation of three directions is measured by three gyroscopes, and data are by signal and communication cable access IMU main frame.
The application of described mooring force is arranged on fiber Bragg grating strain sensor (7) size of anchor chain mooring force is measured, and the angle of anchor chain mooring force is measured with mooring cable attitude-measuring sensor (8).
Described single-point under water moment of torsion cylinder torque measurement using optical fibre grating strain transducer (7) and resistance-type strain rosette (9) is measured single-point moment of torsion cylinder.
Described single-point jacket structure vibration survey applied acceleration sensor (10) vibrates and measures single-point jacket structure.Data are by signal cable degree of will speed up sensor signal access junction box.
The alternate channel of described single-point state monitoring and measuring application all the sensors access FOXBORO system (11) is measured, and realizes collection, transmission, demonstration and the processing of all measurement data.
Described single-point vibration applications INV360V large data collection and analytic system and DASP software (12) carry out complete data acquisition and signal processing.
Described Monitoring Data is processed and software of forecasting (13) can be processed and show in real time the data that monitor, report to the police reaching predetermined precarious position, and have and can know under forecast sea situation, prediction hull six-freedom motion and bow are to stressed etc. the function of, single buoy mooring system.
Owing to there being the FPSO of soft firm arm single buoy mooring system under water to only have one in China, therefore the field monitoring forecast system of soft firm arm single-point single buoy mooring system also has uniqueness in China under water.
Feature of the present invention is can realize the measurement of FPSO towards, FPSO location and six-freedom motion by a set of GPS/IMU system.In the present invention, only use three gps antennas, two data radio stations, a set of IMU main frame, completed FPSO towards, FPSO location and the measurement of six-freedom motion.And under normal circumstances, need four GPS, two data radio stations, an IMU main frame, reduce by a gps antenna.
The invention has the advantages that, adopt the method for real time monitoring, the parameter such as position and attitude to each device in marine environment condition and system is monitored, carry out mechanical analysis in conjunction with correlation theory again, soft firm arm single buoy mooring system is under water carried out to safety assessment, is a kind of research method of efficient science.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make a lot of forms, within these all belong to protection scope of the present invention.