Ocean in-situ multi-parameter testing device

Abstract

The utility model belongs to the technical field of ocean engineering, and provides an ocean in-situ multi-parameter testing device, a probe unit comprises a static sounding testing unit and a lateral pressure loading testing unit, the static sounding testing unit and the lateral pressure loading testing unit are sequentially installed from bottom to top, and the outer diameter of the lateral pressure loading unit is slightly larger than that of the static sounding testing unit. The acquisition module is used for acquiring stratum engineering mechanical parameters; according to the utility model, the probe unit is specifically structured and serves as a core measuring part of the OCPMT, the probe unit continuously penetrates into the stratum under the propelling action of the propelling unit, and in the penetrating process, the conical tip resistance, the side friction resistance and the pore water pressure are collected in real time, and a continuous stratum characteristic profile is obtained; and after penetration is in place, the lateral pressure loading unit applies lateral force to the stratum, the stress-strain value of the surrounding stratum is measured in real time, and engineering mechanical parameters of the stratum are obtained.

Description

Technical Field

[0001] The utility model belongs to the technical field of marine engineering, in particular to a marine in-situ multi-parameter testing device. Background Art

[0002] Before the design, construction and installation of various marine engineering projects, a certain number of in-situ tests are required to obtain accurate and reliable soil engineering mechanics parameters. The development of new in-situ test systems and technologies for the development of marine energy resources is an important tool for offshore wind power, marine oil and gas development, large-scale exploitation of methane hydrate, and prevention and control of marine geological disasters. It is also an important development direction in the current field of marine engineering survey.

[0003] However, in the marine field, due to the characteristics of marine engineering, if a hole is to be tested for static penetration and lateral pressure in situ, it needs to be carried out in batches, which is costly and inefficient. In addition, due to the poor offshore operating environment, conducting two tests in succession will greatly increase the operational risk.

[0004] Therefore, based on the proposed marine in-situ multi-parameter test system and test method, a marine in-situ multi-parameter test device is proposed for its probe unit. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an ocean in-situ multi-parameter testing device to solve the problems mentioned in the background technology.

[0006] A marine in-situ multi-parameter testing device comprises a deck unit, an umbilical cable, a breaking unit, a central control unit, a card unit, a power unit, a propulsion unit, and a probe unit, wherein the probe unit comprises a static penetration test unit and a lateral pressure loading test unit, the lateral pressure loading test unit and the static penetration test unit are installed in sequence from top to bottom, the outer diameter of the lateral pressure loading test unit is slightly larger than that of the static penetration test unit, and is used to obtain the engineering mechanics parameters of the formation.

[0007] Preferably, the static penetration test unit also includes a cone tip, the cone tip is threadedly connected to an axial strain arm, a friction cylinder is installed on the upper part of the cone tip and outside the axial strain arm, an axial pressure sensor is installed in the axial strain arm, the upper part of the axial strain arm is fixedly connected to a connecting cylinder, and a circuit acquisition module is installed inside the connecting cylinder.

[0008] Preferably, the lateral pressure loading test unit is fixedly connected to the static penetration unit via an adapter.

[0009] Preferably, the lateral pressure loading test unit also includes a mounting seat fixedly connected to the adapter, an armor protection strip is fixedly installed on the adapter, a rubber membrane is arranged inside the armor protection strip, the armor protection strip is sleeved on the outside of the rubber membrane to protect the internal rubber membrane, the rubber membrane is sleeved on the mounting seat, and a pair of radial pressure sensors and multiple groups of radial strain arms are installed inside the rubber membrane.

[0010] Preferably, threads and sealing surfaces are provided at both ends of the adapter.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model uses a specific structured probe unit as the core measurement component of OCPMT. Under the propulsion of the propulsion unit, the probe unit continuously penetrates into the formation. During the penetration process, the cone tip resistance, side friction resistance and pore water pressure are collected in real time to obtain a continuous formation characteristic profile; after the penetration is in place, the lateral pressure loading unit applies lateral force to the formation, measures the stress and strain values ​​of the surrounding formations in real time, and obtains the engineering mechanics parameters of the formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the marine in-situ multi-parameter testing device of the utility model;

[0014] Figure 2 This is a schematic diagram of the probe unit structure of the utility model.

[0015] In the figure:

[0016] 100. Static penetration test unit; 101. Axial strain arm; 102. Cone tip; 103. Friction cylinder; 104. Axial pressure sensor; 105. Connecting cylinder; 106. Circuit acquisition module; 200. Lateral pressure loading test unit; 201. Adapter; 202. Mounting seat; 203. Armor protection strip; 204. Rubber membrane; 205. Radial pressure sensor; 206. Radial strain arm. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0018] As attached Figure 1 To Attachment Figure 2 As shown:

[0019] Embodiment 1: The utility model provides an in-situ marine multi-parameter testing device, including a deck unit, an umbilical cable, a breaking unit, a central control unit, a card unit, a power unit, a propulsion unit, and a probe unit. The probe unit includes a static penetration test unit 100 and a lateral pressure loading test unit 200. The lateral pressure loading test unit 200 and the static penetration test unit 100 are installed in sequence from top to bottom. The outer diameter of the lateral pressure loading test unit 200 is slightly larger than that of the static penetration test unit 100, and is used to obtain the engineering mechanics parameters of the formation.

[0020] The static penetration test unit 100 also includes a cone tip 102, which is threadedly connected to an axial strain arm 101, a friction cylinder 103 is installed on the upper part of the cone tip 102 and outside the axial strain arm 101, an axial pressure sensor 104 is installed in the axial strain arm 101, a connecting cylinder 105 is fixedly connected to the upper part of the axial strain arm 101, and a circuit acquisition module 106 is installed inside the connecting cylinder 105. The circuit acquisition module 106 is an existing conventional device for collecting circuits.

[0021] The lateral pressure loading test unit 200 is fixedly connected to the static penetration test unit 100 via an adapter 201. Both ends of the adapter 201 are provided with threads and sealing surfaces.

[0022] The lateral pressure loading test unit 200 also includes a mounting base 202 fixedly connected to the adapter 201, an armor protection strip 203 is fixedly installed on the adapter 201, a rubber membrane 204 is arranged inside the armor protection strip 203, the armor protection strip 203 is sleeved on the outside of the rubber membrane 204, and is used to protect the internal rubber membrane 204, the rubber membrane 204 is sleeved on the mounting base 202, and a pair of radial pressure sensors 205 and multiple groups of radial strain arms 206 are installed inside.

[0023] From the above, it can be seen that during OCPMT operation, the probe unit continuously penetrates into the formation, the static penetration module continuously measures the formation parameters, and returns them to the OCPMT central control unit, which is then transmitted to the deck unit via the umbilical cable. After the penetration operation is completed, the lateral pressure loading module applies radial lateral expansion force to the surrounding formation, measures the formation stress and strain values, and returns them to the OCPMT central control unit, which is then transmitted to the deck unit via the umbilical cable.

[0024] Embodiment 2: This embodiment is basically the same as the previous embodiment, with the difference that the deck unit is provided with a winch, a pulley and a control cabinet, the control cabinet is connected to the engine of the ship platform, and is connected to the winch on the ship through a special cable; the control cabinet is provided with a power supply, an industrial control chassis and a data acquisition chassis, the power supply is used to transform and stabilize the ship power, and to power the marine in-situ lateral pressure static penetration test system through the umbilical cable; the data acquisition chassis is used to distribute control commands, and to monitor and display the working status of the marine in-situ lateral pressure static penetration test system and the test collection parameters in real time; the control cabinet is also provided with an emergency control switch for controlling the test system; the ship platform can be other offshore fixed platforms.

[0025] One end of the umbilical cable is connected to the winch on board via a slip ring, and the other end is provided with a load-bearing head mechanism connected to the marine in-situ lateral pressure static penetration system, so as to realize the lowering test and pulling-up recovery of the system.

[0026] The breaking unit is equipped with a breaking pin inside. The breaking pin in the breaking unit is pulled off by pulling up the umbilical cable to protect the umbilical cable. According to different marine in-situ test operation processes, it is divided into seabed operation mode and downhole operation mode. The breaking unit is an optional component. If the seabed operation mode is adopted, the breaking unit is not required; if the downhole operation mode is adopted, the breaking unit is required.

[0027] The central control unit, as the core hub component of OCPMT, is equipped with high-voltage sealed electrical connectors at both ends. The upper end is connected to the breaking unit (if optional) or the load-bearing head of the umbilical cable, and the lower end is connected to the card unit (if optional) or the probe unit. Inside is an electronic skeleton with multiple electronic circuit modules with different functions, such as control board, communication board, power board, filter board, acquisition board, etc., which are used for distribution and control of deck unit operation commands, data acquisition and communication, and voltage stabilization and transformation.

[0028] The ejection card unit is provided with a plurality of radial locking components, which are locked with the bottom drilling tool assembly to position the marine in-situ multi-parameter test system in the bottom drilling tool assembly; according to different marine in-situ test operation process methods, the ejection card unit is an optional component. If a seabed operation method is adopted, the ejection card unit is not required; if an underground operation method is adopted, the ejection card unit is required.

[0029] The power unit includes a balancing piston, a motor, and a hydraulic pump arranged inside, which are used to provide water pressure balance and hydraulic power for the OCPMT in the downhole operation process. In the seabed operation process, the power is provided by the seabed base plate, and there is no need to configure the power unit; that is, according to the different marine in-situ test operation process methods, the card unit is an optional component. If the seabed operation method is adopted, there is no need to configure the power unit; if the downhole operation method is adopted, the power unit is required.

[0030] The propulsion unit is a general term for hydraulic cylinders with different strokes (1m, 1.5m, 2m, 3m), which include a piston and a piston rod. The propulsion unit is an optional component according to different marine in-situ test operation processes. If a seabed operation method is adopted, the propulsion unit is not required. If an underground operation method is adopted, the propulsion unit is required to provide the probe unit with power to penetrate the formation with the assistance of the power unit.

[0031] As can be seen from the above, its overall appearance is cylindrical. By continuously penetrating the cylindrical test probe into the soil layer to a certain depth, the cone tip resistance, side friction resistance and pore water pressure during the penetration process are measured in real time, the changes in the stratum are sensed, and a continuous soil layer characteristic profile is obtained. At the same time, after reaching the target stratum, pressure can be applied to the surrounding soil through the lateral loading device of the probe. By measuring the relationship between the applied pressure and the deformation of the soil, the stress-strain relationship of the soil in the horizontal direction is obtained, and then a series of geotechnical parameters are obtained through data interpretation.

[0032] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and ratio of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0034] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A marine in-situ multi-parameter testing device, comprising a deck unit, an umbilical cable, a breaking unit, a central control unit, a card unit, a power unit, a propulsion unit, and a probe unit, characterized in that: The probe unit comprises a static penetration test unit (100) and a lateral pressure loading test unit (200). The lateral pressure loading test unit (200) and the static penetration test unit (100) are installed in sequence from top to bottom. The lateral pressure loading test unit (200) has an outer diameter slightly larger than that of the static penetration test unit (100) and is used to obtain engineering mechanical parameters of a formation.

2. The marine in-situ multi-parameter testing device according to claim 1, characterized in that: The static penetration test unit (100) further comprises a cone tip (102), the cone tip (102) being threadedly connected to an axial strain arm (101), a friction cylinder (103) being installed on the upper part of the cone tip (102) and located outside the axial strain arm (101), an axial pressure sensor (104) being installed inside the axial strain arm (101), a connecting cylinder (105) being fixedly connected to the upper part of the axial strain arm (101), and a circuit acquisition module (106) being installed inside the connecting cylinder (105).

3. The marine in-situ multi-parameter testing device according to claim 1, characterized in that: The lateral pressure loading test unit (200) is fixedly connected to the static penetration test unit (100) via an adapter (201).

4. The marine in-situ multi-parameter testing device as claimed in claim 3, characterized in that: The lateral pressure loading test unit (200) further comprises a mounting seat (202) fixedly connected to the adapter (201); an armored protection strip (203) is fixedly mounted on the adapter (201); a rubber membrane (204) is arranged inside the armored protection strip (203); the armored protection strip (203) is sleeved on the outside of the rubber membrane (204) to protect the internal rubber membrane (204); the rubber membrane (204) is sleeved on the mounting seat (202), and a pair of radial pressure sensors (205) and a plurality of groups of radial strain arms (206) are installed inside the rubber membrane (204).

5. The marine in-situ multi-parameter testing device as claimed in claim 3, characterized in that: The adapter (201) is provided with threads and sealing surfaces at both ends.

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