An underwater pipeline mud surface leakage test device for remote multi-channel control

Abstract

The present invention discloses a subsea pipeline mud surface leakage test device with remote multi-channel control, which includes a perforator, a number of sleeves respectively connected to the perforator, deep-water solenoid valves connected to the distal ends of the sleeves, and leakage holes corresponding to the deep-water solenoid valves. An adjustable base is provided at the lower part of the perforator; an adapter elbow is connected to one of the deep-water solenoid valves; a water depth gauge and an underwater inclination sensor are also provided on the base, and a junction box electrically connected to the two is provided; an inlet for externally connecting a high-pressure hose is also provided on the perforator, and an underwater high-pressure pressure transmitter is provided, and the pressure transmitter is electrically connected to the junction box. The present invention has strong practicability and functionality and can be widely applied to the technical field of underwater simulation devices.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater simulation devices, and specifically refers to a remotely multi-controlled submarine pipeline mud surface leakage test device. Background Art

[0002] Oil and gas gathering and transportation is an important part of offshore oil and gas development. Submarine pipelines have become the main form of oil and gas gathering and transportation due to their advantages such as continuity, speed, efficiency, and little influence by climate, and are the "lifeline" of offshore oil and gas production systems. Once a submarine pipeline is damaged, it will cause oil and gas leakage and serious consequences. Not only will the normal production of offshore oil and gas fields be affected, resulting in huge economic losses, but more seriously, the oil and gas leakage will cause serious pollution to the marine environment, damage the marine ecosystem, and also have an adverse social impact. And the restoration and management of the marine ecosystem will be extremely difficult and costly. Therefore, the research on the behavior of submarine pipeline leakage is particularly important. Constructing a submarine pipeline leakage scenario with newly laid submarine pipelines is particularly costly; using in-service submarine pipelines cannot guarantee the needs of downstream users. Therefore, there is an urgent need to study a test device that can be remotely controlled, simulate multiple working conditions, and is small in size and easy to construct underwater. Summary of the Invention

[0003] In view of the above problems, the present invention proposes a simulation leakage experiment device that can be visually observed and controlled on the water surface in the mud state and has a variety of simulated pipeline leakage conditions.

[0004] The technical solution provided by the present invention is as follows:

[0005] A remotely multi-controlled submarine pipeline mud surface leakage test device, including a perforator, a number of sleeves respectively connected to the perforator, a deep-water solenoid valve connected to the distal end of the sleeve, and a leakage hole corresponding to the deep-water solenoid valve. An adjustable base is provided at the lower part of the perforator; a transition elbow is connected to one of the deep-water solenoid valves; a water depth gauge and an underwater inclination sensor are also provided on the base, and a junction box electrically connected to the two is provided; an inlet for connecting an external high-pressure hose is also provided on the perforator, and an underwater high-pressure pressure transmitter is provided, and the pressure transmitter is electrically connected to the junction box;

[0006] An internal cavity is provided in the perforator, and a number of sleeve holes connected to the sleeves are spaced apart. The sleeve holes are all communicated with the internal cavity; a adapter is provided in the sleeve hole for connecting with the sleeve; the inlet and the internal cavity are connected through a tee, and the pressure transmitter is connected to the tee;

[0007] The base is in a disc shape, a gasket for adjusting the distance between the base and the deep-water solenoid valve is provided between the base and the deep-water solenoid valve, and the base and the gasket are connected by a fixing bolt one; the perforator and the base are connected by a fixing bolt two;

[0008] The leakage holes include horizontal leakage holes and vertical leakage holes, which are arranged alternately. Among them, the axis of the horizontal leakage holes is parallel to the plane where the base is located, the axis of the vertical leakage holes is perpendicular to the axis of the horizontal leakage holes, and the leakage holes are located on the adapter one and the adapter elbow at the end of the deep-water solenoid valve far from the casing; opening the vertical leakage hole points of the corresponding deep-water solenoid valve, high-pressure gas is ejected to impact and loosen the soil, so that the device sinks smoothly and the base touches the mud.

[0009] Further, six casings are provided, and the casings are also connected to the deep-water solenoid valves through adapters.

[0010] Further, a number of lifting ring holes are provided on the base, and bolt holes corresponding to the first fixing bolt and the second fixing bolt are also provided on the base.

[0011] Further, a signal processing module is provided in the junction box for receiving and processing the signals of the water depth gauge, the underwater inclination sensor and the pressure transmitter; a fixing seat for fixing the water depth gauge is provided on the base.

[0012] The advantages of the present invention compared with the prior art are as follows:

[0013] This device can be applied to the construction of small boats on the water surface. The leakage points can be adjusted at any time according to needs, with diverse simulated working conditions to meet multiple leakage scenarios;

[0014] The construction of this device on the sea is simple. The state of entering the mud can be visually observed and controlled on the water surface, with diverse simulated pipeline leakage working conditions, and the leakage scenarios of submarine pipelines can be effectively constructed. Description of the Drawings

[0015] Figure 1 is the top view of the embodiment of the present invention;

[0016] Figure 2 is the side view of the embodiment of the present invention;

[0017] Figure 3 is Figure 1 the enlarged view of part A in

[0018] Figure 4 is Figure 1 the enlarged view of part B in Detailed Embodiment

[0019] The following further elaborates on the present invention in conjunction with the attached Figures 1-4 drawings.

[0020] A subsea pipeline mud surface leakage test device for remote multi-channel control, comprising a perforator 3, a number of sleeves 7 respectively connected to the perforator 3, deep-water solenoid valves 6 connected to the distal ends of the sleeves 7, and leakage holes 10 corresponding to the deep-water solenoid valves 6. An adjustable base 1 is provided at the lower part of the perforator 3; a transfer elbow 9 is connected to one of the deep-water solenoid valves 6; a water depth gauge 15 and an underwater inclination sensor 16 are further provided on the base 1, and a junction box 13 is provided for electrically connecting with the two; an inlet 19 for externally connecting a high-pressure hose is further provided on the perforator 3, and an underwater high-pressure pressure transmitter 20 is provided. The pressure transmitter 20 is electrically connected to the junction box 13.

[0021] The perforator 3 is provided with an internal cavity 21, and a number of sleeve holes connected to the sleeves 7 are spaced therein. The sleeve holes are all communicated with the internal cavity 21; a adapter 8 connected to the sleeve 7 is provided in the sleeve hole; the inlet 19 is connected to the internal cavity 21 through a tee 4, and the pressure transmitter 20 is connected to the tee 4.

[0022] Six sleeves 7 are provided. The sleeves 7 are also connected to the deep-water solenoid valves 6 through adapters 8; the leakage holes 10 include horizontal leakage holes 10.1 and vertical leakage holes 10.2. The horizontal leakage holes 10.1 and the vertical leakage holes 10.2 are arranged alternately. Among them, the axis of the horizontal leakage hole 10.1 is parallel to the plane where the base 1 is located, and the axis where the vertical leakage hole 10.2 is located is perpendicular to the axis of the horizontal leakage hole 10.1.

[0023] One end of the deep-water solenoid valve 6 far from the sleeve 7 is provided with an adapter one 9.1 or a transfer elbow 9, and the leakage hole 10 is located on the adapter one 9.1 and the transfer elbow 9.

[0024] The base 1 is disk-shaped. A gasket 5 for adjusting the distance between the base 1 and the deep-water solenoid valve 6 is provided between the base 1 and the deep-water solenoid valve 6. The base 1 and the gasket 5 are connected by a fixing bolt one 22; the perforator 3 and the base 1 are connected by a fixing bolt two 23.

[0025] A number of lifting ring holes 24 are further provided on the base 1, and bolt holes 2 corresponding to the fixing bolt one 22 and the fixing bolt two 23 are further provided on the base 1.

[0026] A signal processing module 25 is provided in the junction box 13 for receiving and processing the signals of the water depth gauge 15, the underwater inclination sensor 16 and the pressure transmitter 20; a fixing seat for fixing the water depth gauge 15 is provided on the base 1.

[0027] Before installing this device underground, use the ship's crane to lower the device to the seabed. Determine the underwater attitude and the water depth of the device through two water depth pressure gauges 15 and underwater inclination sensors 16. After the device reaches the seabed, it first sinks autonomously by its own weight. The leak holes connected to the three vertical deep-water solenoid valves 6 are first inserted into the soil. After the sinking is stable, calculate and analyze the device attitude through the underwater inclination sensor 16, select and determine the deep-water solenoid valve No. 6 to be opened, that is, the deep-water solenoid valve 6 connected to the three vertical leak holes, and flush high-pressure gas or fluid into the orifice divider 33, and read the reading of the high-pressure pressure transmitter 20. When the inflation reaches the predetermined pressure value, open the corresponding deep-water solenoid valve 6 so that the high-pressure gas or liquid sprays out, impacting and loosening the contacting soil mass, causing the device to sink steadily and the base 1 to touch the mud.

[0028] When it is judged that part of the disc base 1 touches the mud, switch to other deep-water solenoid valves 6 to adjust the device attitude to horizontal; when the high-pressure gas cannot cause the device to sink, the high-pressure water body can be replaced. The specific method is as follows: Release the pressure of the high-pressure hose on the ship or on the shore to the external atmospheric pressure and connect the submersible pump. Open the deep-water solenoid valve 6 connected to the horizontal hollow point, and at the same time start the submersible pump to inject water into the high-pressure hose. When there are no more bubbles on the water surface, it means that the water body has filled the orifice divider 3 and the high-pressure hose. At this time, switch the high-pressure hose from the submersible pump to high-pressure gas, push the high-pressure water body by the high-pressure gas, and reach the preset pressure. Open the vertical leak hole point of the corresponding deep-water solenoid valve 6, and the high-pressure gas sprays out, impacting and loosening the soil mass, causing the device to sink steadily and the base 1 to touch the mud.

[0029] During the sinking process, it is necessary to always pay attention to the pressure value inside the device, the device attitude state and the water depth, and timely select and determine the deep-water solenoid valve 6 to be opened. Finally, after stabilization, calculate the mud penetration depth of the device according to the sensor values.

[0030] When conducting the pipeline leakage simulation experiment, the leak holes 10 can be set as leak points with different shapes and different apertures. For example, a 1 mm to 10 mm long straight seam for simulating crack leakage, a 1 mm to 10 mm diameter round hole for simulating round hole leakage, and irregular shapes. Since the vertical leak points also serve as the sinking power outlets, it is recommended to use a round hole shape with a diameter selected from 1 mm to 3 mm. Thus, different leakages at different positions (leakage buried under the mud, non-buried leakage above the mud), different shapes and apertures of leakage (round holes 1mm, 2mm,... 10mm, straight seams 1mm, 2mm,... 10mm, other irregular shapes) can be simulated under different pressure values (0.1 Mpa to 10 Mpa).

[0031] This device is simple and lightweight, which is very conducive to the construction of small boats on the water surface. The leakage points can be adjusted at any time according to needs, with diverse simulated working conditions to meet multiple leakage scenarios. In view of repeated use in seawater, to reduce seawater corrosion, the above components are made of stainless steel. The connection of the above relevant components and the wiring of the cables need special treatment to ensure high-pressure water tightness and no leakage of gas and liquid.

[0032] In summary, the construction of this device is simple, the mud-entering state is visible and controllable, and the simulation of pipeline leakage working conditions is diverse, which can effectively construct the leakage scenario of submarine pipelines.

[0033] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A subsea pipeline mud surface leakage test device with remote multi-channel control, characterized in that It includes a pore divider, a number of sleeves respectively connected to the pore divider, deep-water solenoid valves connected to the distal ends of the sleeves, and leakage holes corresponding to the deep-water solenoid valves. An adjustable base is provided at the lower part of the pore divider; a transfer elbow is connected to one of the deep-water solenoid valves; a water depth gauge and an underwater inclination sensor are also provided on the base, and a junction box is provided and electrically connected to the two; an inlet for externally connecting a high-pressure hose is also provided on the pore divider, and an underwater high-pressure pressure transmitter is provided, and the pressure transmitter is electrically connected to the junction box; An internal cavity is provided in the pore divider, and a number of sleeve holes connected to the sleeves are also provided at intervals. The sleeve holes are all communicated with the internal cavity; a adapter is provided in the sleeve hole and connected to the sleeve; the inlet and the internal cavity are connected through a tee, and the pressure transmitter is connected to the tee; The base is in a disc shape. A gasket for adjusting the distance between the base and the deep-water solenoid valve is provided between the base and the deep-water solenoid valve, and the base and the gasket are connected through a fixing bolt 1; the pore divider and the base are connected through a fixing bolt 2; The leakage holes include horizontal leakage holes and vertical leakage holes. The horizontal leakage holes and the vertical leakage holes are arranged alternately. Among them, the axis of the horizontal leakage hole is parallel to the plane where the base is located, the axis of the vertical leakage hole is perpendicular to the axis of the horizontal leakage hole, and the leakage holes are located on the adapter 1 at the end of the deep-water solenoid valve far from the sleeve and on the transfer elbow; when the vertical leakage hole point of the corresponding deep-water solenoid valve is opened, high-pressure gas is ejected to impact and loosen the soil, so that the device sinks stably and the base touches the mud.

2. The undersea pipeline mud surface leakage test device for remote multi-channel control according to claim 1, characterized in that: Six sleeves are provided, and the sleeves and the deep-water solenoid valves are also connected through adapters.

3. A subsea pipeline mud surface leakage test device for remote multi-channel control according to claim 1, characterized in that: A number of lifting ring holes are also provided on the base, and bolt holes corresponding to the fixing bolt 1 and the fixing bolt 2 are also provided on the base.

4. The undersea pipeline mud surface leakage test device for remote multi-channel control according to claim 1, wherein: A signal processing module is provided in the junction box for receiving and processing the signals of the water depth gauge, the underwater inclination sensor and the pressure transmitter; a fixing seat for fixing the water depth gauge is provided on the base.

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