CN113819884B - Vertical displacement monitoring system and method for submarine oil extraction caisson device - Google Patents
Vertical displacement monitoring system and method for submarine oil extraction caisson device Download PDFInfo
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- CN113819884B CN113819884B CN202111118888.5A CN202111118888A CN113819884B CN 113819884 B CN113819884 B CN 113819884B CN 202111118888 A CN202111118888 A CN 202111118888A CN 113819884 B CN113819884 B CN 113819884B
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- caisson
- vertical displacement
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 64
- 238000012544 monitoring process Methods 0.000 title claims abstract description 64
- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002706 hydrostatic effect Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 241000191291 Abies alba Species 0.000 description 6
- 230000003068 static effect Effects 0.000 description 5
- 230000035515 penetration Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention relates to a vertical displacement monitoring system and a method for a submarine oil extraction caisson device, which are characterized by comprising a level gauge, a base and a controller; the leveling instruments are fixedly arranged at the top of the protection caisson as monitoring points; one side of the top of the protection caisson is connected with the base which is used for being placed on the seabed through a connecting device, the base is fixedly provided with a level gauge which is used for monitoring the vertical displacement of the position where the level gauge is located; the controller is respectively connected with each level and the connecting device, and is used for judging whether to send out an early warning prompt according to monitoring data of each level and a preset vertical displacement threshold value, controlling the disconnection or connection of the connecting device and supplying power to each electric component of the vertical displacement monitoring system.
Description
Technical Field
The invention relates to a displacement monitoring system and a method, in particular to a vertical displacement monitoring system and a method for a submarine oil extraction caisson device, belonging to the field of offshore oil.
Background
Subsea petroleum is one of the mineral resources in sedimentary rock and bedrock buried below the ocean floor. With the continuous increase in global energy demand, the development scale and pattern of offshore oil is continuously innovating. For oil field development in special areas, in order to ensure the safety of oil extraction equipment, the christmas tree needs to be placed in a protective caisson placed under the mud surface.
The position of the christmas tree is fixed in the working process, but the submarine caisson is often influenced by the soft seabed surface, so that uneven settlement or larger vertical displacement is generated, the jumper between the christmas tree and the manifold and the joint of the manifold outer sea pipe are very sensitive to settlement, if the displacement exceeds the bearing capacity, the risk of fracture of the joint can occur, and therefore the normal working of the christmas tree is influenced, even oil leakage occurs, and serious events such as environmental pollution and the like are caused. Therefore, the vertical displacement and uneven settlement of the caisson are required to be monitored, and settlement information is timely mastered and known so as to take necessary measures in time, thus providing important guarantee for the development of the oil field. However, no monitoring system capable of timely grasping and knowing sedimentation information is currently available to the offshore oil field.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a vertical displacement monitoring system and a method for a submarine oil extraction caisson device, which can timely grasp and understand sedimentation information.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a vertical displacement monitoring system for a submarine oil extraction caisson device comprises a level gauge, a base and a controller;
the leveling instruments are fixedly arranged at the top of the protection caisson as monitoring points; one side of the top of the protection caisson is connected with the base which is used for being placed on the seabed through a connecting device, the base is fixedly provided with a level gauge which is used for monitoring the vertical displacement of the position where the level gauge is located;
the controller is respectively connected with each level and the connecting device, and is used for judging whether to send out an early warning prompt according to monitoring data of each level and a preset vertical displacement threshold value, controlling disconnection or connection of the connecting device and supplying power to each power utilization component of the vertical displacement monitoring system.
Further, the level adopts a differential pressure type hydrostatic level.
Further, the connecting device comprises a connecting rod and an electronic connecting lock;
the top one side of protection caisson is passed through the connecting rod is connected the base, be provided with on the connecting rod the electronic connection lock, the electronic connection lock is used for breaking off or joining the connecting rod.
Further, the length of the connecting rod is 2-3 m.
Further, the connecting rod is disconnected in a ratio of 3:7.
Further, the controller comprises a data acquisition instrument, an early warning system, a control system and a power supply system;
the data acquisition instrument is used for acquiring monitoring data of each level in real time and determining the relative vertical displacement of the protection caisson according to the vertical displacement monitored by each monitoring point and the vertical displacement monitored by the datum point;
the early warning system is used for sending out early warning prompt when the relative vertical displacement of the protection caisson exceeds a preset vertical displacement threshold value;
the control system is used for controlling the opening or closing of the electronic connection lock according to the vertical displacement monitored by each monitoring point;
the power supply system is used for supplying power to all power utilization components of the vertical displacement monitoring system.
Further, the four leveling instruments are fixedly arranged on the edge of the top of the protection caisson in a cross shape.
Further, the bottom of the base is provided with a penetration tip.
A monitoring method for a vertical displacement monitoring system for a subsea production caisson apparatus, comprising:
penetrating the whole protection caisson provided with the vertical displacement monitoring system for the submarine oil extraction caisson device into the seabed until the protection caisson is flush with the seabed plane, and at the moment, the controller controls the connecting device to be disconnected, so that the protection caisson is disconnected with the datum point;
each level monitors the vertical displacement at the position in real time and sends monitoring data to a controller;
and the controller judges whether to send out an early warning prompt according to the monitoring data of each differential pressure type hydrostatic level and a preset vertical displacement threshold value received in real time.
Further, before the protection caisson is put into water, a vertical displacement monitoring system for the submarine oil extraction caisson device is arranged on the protection caisson, and the vertical displacement monitoring system comprises:
one side of the top of the protection caisson is connected with a base through a connecting device, and a level gauge is arranged on the base to serve as a datum point;
a plurality of leveling instruments are used as monitoring points and are fixedly arranged at the top of the protection caisson at intervals;
one ends of the plurality of armoured cables are respectively connected with corresponding level gauges, and the other ends of the armoured cables are connected with a controller through umbilical cables.
Due to the adoption of the technical scheme, the invention has the following advantages:
1. according to the invention, during oil extraction operation in an oil field, long-term and real-time vertical displacement and uneven settlement monitoring can be carried out on the submarine protection caisson, the displacement of the protection caisson is early-warned, adverse symptoms are found in time, and control measures are taken to ensure that the christmas tree works normally.
2. According to the invention, at least four differential pressure type static leveling instruments are arranged at the top of the protection caisson and are used as monitoring points, one differential pressure type static leveling instrument is arranged at one side of the top of the protection caisson and is used as a datum point, and when the top of the protection caisson is flush with a seabed plane, the datum point is disconnected from the monitoring points, so that the purpose that the datum point is not influenced by settlement of the protection caisson is achieved, displacement of the protection caisson is early warned according to monitoring data of the monitoring points and the datum point, and the differential pressure type static leveling instrument can be widely applied to the field of offshore oil.
Drawings
FIG. 1 is a schematic cross-sectional view of a vertical displacement monitoring system according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a protective caisson according to an embodiment of the present invention;
FIG. 3 is a side view of a datum point and a base provided in one embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
According to the vertical displacement monitoring system and method for the submarine oil extraction caisson device, provided by the embodiment of the invention, the vertical displacement and the uneven settlement degree of the caisson can be monitored and protected in real time for a long period through the differential pressure type static level gauge, and the normal working of the christmas tree is ensured.
Example 1
As shown in fig. 1, the present embodiment provides a vertical displacement monitoring system for a subsea production caisson device, comprising a differential pressure type hydrostatic level 1, a connecting rod 2, a base 3, an electronic connection lock 4, a controller 5, an umbilical cable 6 and an armoured cable 7.
At least four differential hydrostatic levels 1 are fixedly arranged at the top of the protection caisson 8 as monitoring points, wherein it is to be noted that the top of the protection caisson 8 is one end close to the seabed in the working state. The base 3 is connected through connecting rod 2 to top one side of protection caisson 8, and fixed setting a differential pressure type hydrostatic level 1 on the base 3 is as the datum point, and base 3 is used for placing on the seabed with protection caisson certain distance department, and differential pressure type hydrostatic level 1 is used for monitoring the vertical displacement of locate place department. The connecting rod 2 is provided with an electronic connection lock 4, the electronic connection lock 4 being used for disconnecting or engaging the connecting rod.
The controller 5 is fixedly arranged on the coast, the controller 5 is connected with the corresponding differential pressure type hydrostatic level gauge 1 through the umbilical cable 6 through the corresponding armor cable 7, the controller 5 is also electrically connected with the electronic connection lock 4, and the controller 5 is used for judging whether to send out an early warning prompt according to the monitoring data of each differential pressure type hydrostatic level gauge 1 received in real time and a preset vertical displacement threshold value, controlling the opening or closing of the electronic connection lock 4 and supplying power to each power utilization component of the invention.
In a preferred embodiment, the number of the differential pressure type hydrostatic level gauges 1 is five, and the differential pressure type hydrostatic level gauges 1 have the advantages of small volume, high precision, full sealing structure, capability of being buried underground, stronger data real-time property, suitability for various severe environments and measuring points without liquid level flowing, and the like, and can be embodied in real time as long as the liquid level differential pressure is settled, so that the differential pressure type hydrostatic level gauges 1 are adopted for monitoring.
In a preferred embodiment, as shown in fig. 2, four differential hydrostatic levels 1 are fixedly arranged in a cross shape on the edge of the top of the protective caisson.
In a preferred embodiment the protection caisson 8 has a length of 20m and a diameter of 4m, and when the protection caisson 8 is in operation, the protection caisson 8 is wholly penetrated into the seabed until the top is level with the seabed.
In a preferred embodiment, the length of the connecting rod 2 is 2-3 m, the disconnection is in a ratio of 3:7, and the electronic connection lock 4 is arranged at the disconnection of the connecting rod 2.
In a preferred embodiment, as shown in fig. 3, the bottom of the base 3 is provided with a penetration tip 31, the penetration tip 31 having a length of 1m, to reduce the resistance generated when the base 3 penetrates the seabed, so that the datum point is kept as level as possible with the top of the protection caisson 8.
In a preferred embodiment, the controller 5 comprises a data acquisition instrument, an early warning system, a control system and a power supply system.
The data acquisition instrument is used for acquiring monitoring data of each differential pressure type hydrostatic level 1 in real time, and determining relative vertical displacement of the protection caisson 8 according to the vertical displacement monitored by each monitoring point and the vertical displacement monitored by the datum point.
The early warning system is used for sending out early warning prompt when the relative vertical displacement of the protection caisson 8 exceeds a preset vertical displacement threshold value.
The control system is used for controlling the opening or closing of the electronic connection lock 4 according to the vertical displacement monitored by each monitoring point.
The power supply system is used for supplying power to each power utilization component of the invention.
Example 2
The embodiment provides a vertical displacement monitoring method for a submarine oil extraction caisson device, which comprises the following steps:
1) Before the caisson 8 is protected to be filled with water, the vertical displacement monitoring system is arranged, and specifically comprises:
1.1 A base 3 is provided on the top side of the protective caisson 8 by means of the connecting rod 2 with the electronic connection lock 4, and a differential pressure type hydrostatic level 1 is provided on the base 3 as a reference point.
1.2 Four differential pressure type hydrostatic level gauges 1 are used as monitoring points and are fixedly arranged on the edge of the top of the protection caisson 8 in a cross shape.
1.3 One ends of the five armoured cables 7 are respectively connected with the corresponding differential pressure type static level gauge 1, and the other ends are connected with the controller 5 through umbilical cables 6.
2) The protection caisson 8 comprising the vertical displacement monitoring system is integrally penetrated into the seabed until the top of the protection caisson 8 is flush with the seabed plane, the base 3 is positioned on the seabed at a certain distance from the protection caisson 8, at the moment, the controller 5 controls the electronic connection lock 4 to be opened, and the connecting rod 2 is disconnected, so that the purpose that the datum point is not influenced by the settlement of the protection caisson 8 is achieved.
3) Each differential pressure type hydrostatic level 1 monitors the vertical displacement at the position in real time and sends the monitoring data to the controller 5.
4) The controller 5 judges whether to send out an early warning prompt according to the monitoring data of each differential pressure type hydrostatic level 1 received in real time and a preset vertical displacement threshold value, and specifically comprises the following steps:
4.1 The data acquisition instrument acquires the monitoring data of each differential pressure type hydrostatic level 1 in real time, and determines the relative vertical displacement of the protection caisson 8 according to the vertical displacement monitored by each monitoring point and the vertical displacement monitored by the datum point.
4.2 When the relative vertical displacement of the protection caisson 8 exceeds a preset vertical displacement threshold value, an early warning prompt is sent out, wherein the early warning prompt can be in a short message form, a sound early warning form, a signal lamp early warning form and the like.
The foregoing embodiments are only for illustrating the present invention, wherein the structures, connection modes, manufacturing processes, etc. of the components may be changed, and all equivalent changes and modifications performed on the basis of the technical solutions of the present invention should not be excluded from the protection scope of the present invention.
Claims (2)
1. A monitoring method for a vertical displacement monitoring system of a subsea production caisson device, comprising:
penetrating the whole protection caisson provided with the vertical displacement monitoring system for the submarine oil extraction caisson device into the seabed until the protection caisson is flush with the seabed plane, and at the moment, the controller controls the connecting device to be disconnected, so that the protection caisson is disconnected with the datum point;
each level monitors the vertical displacement at the position in real time and sends monitoring data to a controller;
the controller judges whether to send out an early warning prompt according to the monitoring data of each differential pressure type hydrostatic level and a preset vertical displacement threshold value received in real time;
the vertical displacement monitoring system for the submarine oil extraction caisson device comprises a level gauge, a base and a controller;
the leveling instruments are fixedly arranged at the top of the protection caisson as monitoring points; one side of the top of the protection caisson is connected with the base which is used for being placed on the seabed through a connecting device, the base is fixedly provided with a level gauge which is used for monitoring the vertical displacement of the position where the level gauge is located;
the controller is respectively connected with each level and the connecting device, and is used for judging whether to send out an early warning prompt according to monitoring data of each level and a preset vertical displacement threshold value, controlling disconnection or connection of the connecting device and supplying power to each power utilization component of the vertical displacement monitoring system.
2. A method of monitoring vertical displacement for a subsea production caisson apparatus according to claim 1, wherein a vertical displacement monitoring system for a subsea production caisson apparatus is provided on the protective caisson before the protective caisson is flooded, comprising:
one side of the top of the protection caisson is connected with a base through a connecting device, and a level gauge is arranged on the base to serve as a datum point;
a plurality of leveling instruments are used as monitoring points and are fixedly arranged at the top of the protection caisson at intervals;
one ends of the plurality of armoured cables are respectively connected with corresponding level gauges, and the other ends of the armoured cables are connected with a controller through umbilical cables.
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|---|---|---|---|
| CN202111118888.5A CN113819884B (en) | 2021-09-24 | 2021-09-24 | Vertical displacement monitoring system and method for submarine oil extraction caisson device |
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| CN202111118888.5A CN113819884B (en) | 2021-09-24 | 2021-09-24 | Vertical displacement monitoring system and method for submarine oil extraction caisson device |
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| CN113819884B true CN113819884B (en) | 2023-11-21 |
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