Floating slurry storage device and self-elevating ocean platform

Abstract

The utility model discloses a floating slurry storage device and a self-elevating ocean platform, and relates to the technical field of offshore operation equipment. The floating type mud storage device comprises a floating box, a mud inlet pump and a mud return pump. Wherein the floating box is of an elastic structure, the floating box is provided with a mud storage cavity used for storing mud, the side wall of the mud storage cavity is provided with a floating cavity and an inflation inlet, the inflation inlet is communicated with the floating cavity, and gas can be inflated into the floating cavity or exhausted from the floating cavity through the inflation inlet; an inlet of the mud inlet pump is communicated with the mud storage cavity, and an outlet of the mud inlet pump is communicated with a mud cabin of the self-elevating ocean platform so as to pump mud in the mud storage cavity to the mud cabin; an inlet of the mud return pump is communicated with the mud cabin, and an outlet is communicated with the mud storage cavity so as to pump mud in the mud cabin to the mud storage cavity. When the floating type mud storage device is used, the floating box used for containing mud does not need to occupy the deck space of the self-elevating ocean platform, the requirement for large-volume mud can be met, and economic benefits can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of offshore operation equipment, and more specifically, to a floating mud storage device. In addition, the utility model also relates to a self-elevating offshore platform comprising the floating mud storage device. Background Art

[0002] A self-elevating offshore platform is a device used for drilling operations in offshore oil fields. Due to the strong winds and waves at sea and the distance of the operation site from the land, it is not easy to resupply it. Therefore, the platform is self-provided with fuel, drinking water, industrial fresh water, barite, mud, and various drilling tools and equipment. This method is conducive to reducing the sea transportation of various spare parts and materials and reducing production costs.

[0003] The main method of storing drilling mud is to set up a mud tank on the platform body, and the mud tank is generally set at the tail of the platform. The mud excavated when the drilling platform is working usually needs to be processed by a purification module before being injected into the mud tank.

[0004] With the development of offshore oil field exploration year by year, the requirements for the capacity of offshore oil drilling platforms are gradually increasing. Specifically, in terms of mud storage capacity, for some ultra-deep wells, special process wells, and some conventional wells that encounter some special downhole situations, the mud storage demand of the mud bunker is greatly increased compared with ordinary conventional wells. In order to avoid the situation that the mud in the mud tank cannot meet the production requirements, so that the platform can complete the drilling operation normally and ensure economic benefits, the relevant existing technology mainly transports some mud tanks by transport ships, hangs them on the main deck by crane, and uses pipelines to connect the mud tanks and mud tanks, so as to replenish the mud in the mud tanks into the mud bunker. However, the effect is not ideal. The deck space is narrow and crowded, which is not convenient for installation, and it is difficult to install large mud tanks, so it is difficult to generate high economic benefits.

[0005] In summary, how to ensure that the mud volume meets the needs of drilling operations while improving economic benefits is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a floating mud storage device, which can ensure that the mud volume meets the drilling operation requirements and is conducive to improving economic benefits.

[0007] Another object of the utility model is to provide a self-elevating offshore platform comprising the above-mentioned floating mud storage device.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A floating mud storage device, comprising:

[0010] A buoyancy box, which is an elastic structure, has a mud storage chamber for storing mud, and the side wall of the mud storage chamber has a floating chamber and an air charging port, the air charging port is connected to the floating chamber, and gas can be charged into the floating chamber or discharged through the air charging port;

[0011] A mud pump, whose inlet is used to communicate with the mud storage chamber and whose outlet is used to communicate with the mud tank of the self-elevating offshore platform, so as to pump the mud in the mud storage chamber to the mud tank;

[0012] A mud return pump has an inlet for communicating with the mud compartment and an outlet for communicating with the mud storage cavity, so as to pump the mud in the mud compartment to the mud storage cavity.

[0013] Preferably, the buoyancy box includes an elastic outer bladder and an inner body, both of which are hollow structures, the inner body is sleeved inside the outer bladder, and the inner body can open or contract synchronously with the outer bladder, and the inflation port is located on the outer wall of the outer bladder.

[0014] Preferably, the buoyancy box is provided with a first delivery pipeline, a first end of the first delivery pipeline is connected to the mud storage chamber of the buoyancy box to which it is connected, and a second end of the first delivery pipeline has a first pipeline joint;

[0015] The mud storage chambers of a plurality of the buoyancy boxes can be connected in sequence via the corresponding first conveying pipelines and the first pipeline joints.

[0016] Preferably, at least one of the pontoons is provided with a mud inlet pipeline, and at least another of the pontoons is provided with a mud outlet pipeline;

[0017] The first ends of the mud inlet pipeline and the mud outlet pipeline are connected to the bottom end of the mud storage cavity of the buoyancy box to which they are connected;

[0018] The second end of the mud inlet pipeline extends to the outside of the buoyancy tank to which it is connected, and is used to connect to the inlet of the mud inlet pump;

[0019] The second end of the mud discharge pipeline extends to the outside of the buoyancy box to which it is connected, and is used to be connected to the outlet of the mud return pump.

[0020] Preferably, it also includes a second delivery pipeline and a stop valve;

[0021] One end of the stop valve can be connected to the corresponding first pipe joint to communicate with the first delivery line;

[0022] The first end and the second end of the second delivery pipeline both have a second pipe joint, the second end of the stop valve can be connected to the second pipe joint corresponding to the first end of the second delivery pipeline, and the second pipe joint at the second end of the second delivery pipeline of one floating box can be conductively connected to the second pipe joint at the second end of the second delivery pipeline of another floating box.

[0023] Preferably, it also includes a seawater pump and a delivery pipeline;

[0024] The buoyancy box has a first channel, a first end of the first channel is located inside the buoyancy box and communicates with the mud storage cavity, and a second end of the first channel is located outside the buoyancy box;

[0025] The first end of the delivery pipeline can be inserted into the first channel, and the second end can be connected to the outlet of the seawater pump.

[0026] Preferably, the buoyancy box is provided with a rotatable agitator, and the agitator is inserted in the mud storage chamber to stir the mud in the mud storage chamber.

[0027] Preferably, it also includes an impeller and a connecting rod;

[0028] The first end of the connecting rod can be connected to the impeller, and the buoyancy tank has a second channel. The second end of the connecting rod can be inserted into the second channel and connected to or separated from the agitator to connect the agitator and the impeller coaxially, and when the connecting rod is connected to the agitator in place, the impeller is located at the outer bottom of the buoyancy tank.

[0029] Preferably, the bottom end of the buoyancy box has a connection seat so that the seawater pump can be arranged at the bottom of the buoyancy box, and the seawater pump is an electric submersible pump;

[0030] And / or, an anti-corrosion layer is provided between the outer liner and the inner body;

[0031] And / or, a lifting device is provided at the top of the buoyancy box;

[0032] And / or, it also includes a first cabin body pipeline and a second cabin body pipeline, the first end of the first cabin body pipeline is used to connect to the outlet of the mud inlet pump, and the second end is used to connect to the mud cabin, the first end of the second cabin body pipeline is used to connect to the inlet of the mud return pump, and the second end is used to connect to the mud cabin.

[0033] A self-elevating offshore platform comprises a main deck and also comprises any one of the above-mentioned floating mud storage devices, wherein the mud feed pump and the mud return pump can both be arranged on the main deck.

[0034] The utility model provides a floating mud storage device, in which the buoyancy box is a double-layer structure, wherein the interior of the inner layer structure is provided with a mud storage cavity, and a floating cavity is provided between the outer layer structure and the inner layer structure, and an inflation port is provided on the outer layer structure so that gas can be injected into the floating cavity; and the buoyancy box has a passage in which a pipeline can be inserted to connect the mud storage cavity and the outside of the buoyancy box, so that a mud inlet pump and a mud return pump can be connected through pipelines.

[0035] The beneficial effect is that when in use, gas is filled into the floating cavity to open the buoyancy box, and then the buoyancy box is placed in the sea. The gas in the floating cavity can provide buoyancy for the buoyancy box to float on the sea surface, and then the mud cavity of the buoyancy box is connected with the inlet of the mud inlet pump, and the mud cavity of the buoyancy box is connected with the outlet of the mud return pump by a pipeline. Finally, the outlet of the mud inlet pump and the inlet of the mud return pump are connected to the mud tank of the self-elevating offshore platform, so that the mud in the mud tank of the self-elevating offshore platform can be pumped into the buoyancy box for storage; when the drilling production is completed, the mud in the buoyancy box is pumped back to the mud tank of the self-elevating offshore platform, and then the buoyancy box is pulled back to the self-elevating offshore platform, and the gas in the floating cavity can be released. When the floating mud storage device is in use, the buoyancy box used to accommodate mud does not need to occupy the deck space of the self-elevating offshore platform, which is conducive to meeting the demand for a larger volume of mud and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 A schematic top view of a specific embodiment provided by the utility model;

[0038] Figure 2 A schematic diagram of the structure of a buoyancy box according to a specific embodiment of the present utility model;

[0039] Figure 3 It is a front view schematic diagram of a specific embodiment provided by the utility model;

[0040] Figure 4 Another schematic top view of a specific embodiment provided by the utility model;

[0041] Figure 5 This is another schematic top view of a specific embodiment provided by the utility model.

[0042] Reference numerals:

[0043] 1- buoyancy box; 2- mud inlet pump; 3- mud return pump; 4- first delivery pipeline; 5- second delivery pipeline; 6- stop valve; 7- seawater pump; 8- agitator; 9- impeller; 10- connecting rod; 11- mud inlet pipeline; 12- mud outlet pipeline; 13- first cabin pipeline; 14- second cabin pipeline; 15- lifting piece; 16- outer liner; 161- floating chamber; 162- inflation port; 17- inner body; 171- mud storage chamber; 18- anti-corrosion layer;

[0044] 19- Mud tank; 20- Crane. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] The core of the utility model is to provide a floating mud storage device, which can ensure that the mud volume meets the drilling operation requirements and is conducive to improving economic benefits. Another core of the utility model is to provide a self-elevating offshore platform including the floating mud storage device.

[0047] Please refer to Figure 1 The utility model provides a floating mud storage device, including a buoyancy box 1, a mud inlet pump 2 and a mud return pump 3. The buoyancy box 1 is an elastic structure, and has a mud storage chamber 171 for storing mud, and the side wall of the mud storage chamber 171 has a floating chamber 161 and an air charging port 162, and the air charging port 162 is connected to the floating chamber 161, and gas can be charged into the floating chamber 161 or discharged through the air charging port 162; the inlet of the mud inlet pump 2 is used to connect to the mud storage chamber 171, and the outlet is used to connect to the mud tank 19 of the self-elevating marine platform, so as to pump the mud in the mud storage chamber 171 to the mud tank 19; the inlet of the mud return pump 3 is used to connect to the mud tank 19, and the outlet is used to connect to the mud storage chamber 171, so as to pump the mud in the mud tank 19 to the mud storage chamber 171.

[0048] like Figures 1 to 3 As shown, the pontoon 1 is a double-layer structure, the inner layer structure has a mud storage chamber 171, and the outer layer structure and the inner layer structure are between a floating chamber 161, and an inflation port 162 is opened on the outer layer structure to be able to fill the floating chamber 161 with gas; and the pontoon 1 has a channel that can be inserted with a pipe to connect the mud storage chamber 171 and the outside of the pontoon 1, so that the mud inlet pump 2 and the mud return pump 3 can be connected through pipelines.

[0049] During assembly, gas is filled into the floating chamber 161 to open the pontoon 1, and then the mud chamber of the pontoon 1 is connected to the inlet of the mud inlet pump 2, and the mud chamber of the pontoon 1 is connected to the outlet of the mud return pump 3 by pipelines. The outlet of the mud inlet pump 2 and the inlet of the mud return pump 3 are connected to the mud tank 19 of the self-elevating marine platform, and the power pipelines of the mud inlet pump 2 and the mud return pump 3 are connected to the platform power. Then the pontoon 1 is placed in the sea. The gas in the floating chamber 161 can provide buoyancy for the pontoon 1 to float on the sea surface.

[0050] When in use, the mud inlet pump 2 is started to pump the mud in the mud tank 19 of the self-elevating offshore platform into the buoyancy box 1 for storage; when the drilling production is completed, the mud return pump 3 is started to pump the mud in the mud storage chamber 171 back to the mud tank 19 of the self-elevating offshore platform, and then the buoyancy box 1 is pulled back to the self-elevating offshore platform to release the gas in the floating chamber 161.

[0051] When the floating mud storage device is in use, the pontoon 1 for containing mud does not need to occupy the deck space of the self-elevating marine platform, which is conducive to meeting the demand for a larger volume of mud, is conducive to improving economic benefits, and is conducive to improving the applicability of various types of self-elevating marine platforms. It is low in cost, easy to operate, and convenient to store, which is conducive to saving space on the self-elevating marine platform.

[0052] Based on the above embodiment, the buoyancy box 1 includes an elastic outer bladder 16 and an inner body 17. Both the outer bladder 16 and the inner body 17 are hollow structures. The inner body 17 is sleeved inside the outer bladder 16, and the inner body 17 can open or contract synchronously with the outer bladder 16. The inflation port 162 is located on the outer wall of the outer bladder 16.

[0053] In this embodiment, if Figure 2 and Figure 3 As shown, the outer liner 16 is a double-wall structure, with a space between the outer and inner walls as a floating chamber 161, and the inner body 17 is fixedly connected to the inner wall of the outer liner 16, such as by bonding or rubber strips, so that the inner body 17 can shrink or expand synchronously with the outer liner 16. This arrangement is conducive to ensuring the buoyancy that the outer liner 16 can provide and the ability of the floating mud storage device to accommodate sludge, and is easy to use and has a long service life.

[0054] On the basis of the above embodiment, the pontoon 1 is provided with a first conveying pipeline 4, the first end of the first conveying pipeline 4 is connected to the mud storage chamber 171 of the pontoon 1 to which it is connected, and the second end of the first conveying pipeline 4 has a first pipe joint; the mud storage chambers 171 of several pontoons 1 can be connected in sequence through the corresponding first conveying pipeline 4 and the first pipe joint.

[0055] like Figure 1As shown, a first conveying pipeline 4 is arranged on the pontoon 1, and a first end of the first conveying pipeline 4 is inserted in the peripheral wall of the pontoon 1, extending to the mud storage chamber 171 and connected thereto, so that the mud in the mud storage chamber 171 can flow into the first conveying pipeline 4, and a second end of the first conveying pipeline 4 extends to the outside of the pontoon 1, and is installed with a first pipe joint, such as a flange or a plug-in joint or a threaded joint, so that the mud storage chambers 171 of adjacent pontoons 1 can be connected through their respective first conveying pipelines 4. With such a configuration, the floating mud storage device is convenient for meeting the mud requirements of different volumes.

[0056] It should be noted that the number and distribution of the first delivery pipelines 4 are not limited, as long as the above functions can be achieved.

[0057] For example, optional, such as Figure 2 As shown, there are two pontoons 1, and both pontoons 1 have a first conveying pipeline 4. During installation, the two pontoons 1 are arranged opposite to each other. At this time, the first conveying pipeline 4 connected to the pontoon 1 extends from the side opposite to the other pontoon 1, and the first pipe joints of the adjacent free ends of the two first conveying pipelines 4 are connected, so that the mud storage chambers 171 of the two pontoons 1 can be connected; or.

[0058] Optional, such as Figure 4 As shown, the number of pontoons 1 is greater than or equal to three. Specifically, the pontoons 1 include two first pontoons 1 and at least one second pontoon 1. The first pontoon 1 is installed with a first conveying pipeline 4, and the second pontoon 1 is installed with two first conveying pipelines 4. During installation, the first pontoon 1, the second pontoon 1 and the first pontoon 1 are connected in sequence into a series through the corresponding first conveying pipelines 4, that is, the mud storage chambers 171 of several pontoons 1 can be connected.

[0059] Optional, such as Figure 5 As shown, the number of pontoons 1 is greater than or equal to three, and each pontoon 1 is installed with two first conveying pipelines 4. Among the first conveying pipelines 4 provided for each pontoon 1, one first conveying pipeline 4 is installed on the first side of the corresponding pontoon 1, and the other first conveying pipeline 4 is installed on the second side of the corresponding pontoon 1. During installation, two adjacent pontoons 1 are connected through the first conveying pipeline 4 on the first side of one of the pontoons 1 and the first conveying pipeline 4 on the second side of the other pontoon 1, so as to connect the plurality of pontoons 1 into a series, and the first conveying pipeline 4 located on the endmost pontoon 1 among the plurality of pontoons 1 connected into a series and not used to connect the pontoons 1 is blocked, for example, a switch valve is provided and the switch valve is closed, or a plug is provided, etc. With such a configuration, the mud storage chambers 171 of the plurality of pontoons 1 can be connected through the first conveying pipeline 4, and it is convenient to reduce the manufacturing difficulty and cost of the floating mud storage device.

[0060] Furthermore, the inner end of the first conveying pipeline 4 connected to the mud storage chamber 171 is located at the bottom end of the corresponding mud storage chamber 171, the pipe section of the first conveying pipeline 4 inserted into the inside of the pontoon 1 extends in a straight line, and the outer end of the first conveying pipeline 4 located on the outer surface of the pontoon 1 is lower than its corresponding inner end, so as to ensure that all the mud in the mud storage chamber 171 flows out, and the manufacturing difficulty is relatively low, which effectively reduces the manufacturing cost of the floating mud storage device.

[0061] On the basis of the above-mentioned embodiment, at least one pontoon 1 is provided with a mud inlet pipeline 11, and at least another pontoon 1 is provided with a mud outlet pipeline 12; the first ends of the mud inlet pipeline 11 and the mud outlet pipeline 12 are connected to the bottom end of the mud storage chamber 171 of the pontoon 1 to which they are connected; the second end of the mud inlet pipeline 11 extends to the outside of the pontoon 1 to which it is connected, and is used to connect to the inlet of the mud inlet pump 2; the second end of the mud outlet pipeline 12 extends to the outside of the pontoon 1 to which it is connected, and is used to connect to the outlet of the return mud pump 3.

[0062] like Figure 2 and Figure 3 As shown, the first ends of the mud inlet pipeline 11 and the mud outlet pipeline 12 are inserted into the peripheral wall of the buoyancy box 1, extending to the mud storage chamber 171 and communicating therewith, so that the mud in the mud storage chamber 171 can flow into the mud outlet pipeline 12, and the mud in the mud inlet pipeline 11 can flow into the mud storage chamber 171, and the second ends of the mud inlet pipeline 11 and the mud outlet pipeline 12 extend to the outside of the buoyancy box 1 to facilitate the connection with the corresponding mud inlet pump 2 and mud return pump 3. With such an arrangement, when in use, gas is filled into the floating chamber 161, and then the second end of the mud inlet pipeline 11 is connected to the mud inlet pump 2, and the second end of the mud outlet pipeline 12 is connected to the mud return pump 3. The floating mud storage device is easy to use.

[0063] On the basis of the above embodiment, it also includes a second delivery pipeline 5 and a stop valve 6; one end of the stop valve 6 can be connected to the corresponding first pipe joint to connect the first delivery pipeline 4; the first end and the second end of the second delivery pipeline 5 both have a second pipe joint, the second end of the stop valve 6 can be connected to the second pipe joint corresponding to the first end of the second delivery pipeline 5, and the second pipe joint at the second end of the second delivery pipeline 5 of one pontoon 1 can be conductively connected to the second pipe joint at the second end of the second delivery pipeline 5 of another pontoon 1.

[0064] like Figure 1 , Figure 4 and Figure 5 As shown, a first pipeline joint is provided at one end of the first delivery pipeline 4 located outside the buoyancy box 1 , and second pipeline joints are provided at both ends of the second delivery pipeline 5 .

[0065] It should be noted that there is no limitation on the types of the first pipe joint and the second pipe joint, such as a plug joint or a flange, etc. Of course, the first pipe joint and the second pipe joint can be the same or different, as long as a conductive connection can be achieved.

[0066] It should also be noted that the type of the stop valve 6 is not limited, such as an on-off valve or a regulating valve with adjustable opening, etc., as long as it can connect or isolate adjacent mud storage chambers.

[0067] During assembly, first connect the corresponding stop valve 6 and the second delivery pipeline 5 on each pontoon 1. Specifically, one end of the first delivery pipeline 4 located on the outside of the pontoon 1 is connected to an open end of the stop valve 6 through a first pipeline joint, and the other open end of the stop valve 6 is connected to one end of the second delivery pipeline 5 through a second pipeline joint. Then, the mud storage chamber 171 of each pontoon 1 is connected, that is, the second delivery pipeline 5 connecting two adjacent pontoons 1 is connected through the second pipeline joint.

[0068] With such arrangement, the operator can conveniently set the stop valve 6 between adjacent pontoons 1 as needed to meet the functional requirements of the pontoons 1 for storing mud, or to meet the functional requirements of the pontoons 1 for storing mud and participating in circulation.

[0069] On the basis of the above embodiment, it also includes a seawater pump 7 and a delivery pipeline; the pontoon 1 has a first channel, the first end of the first channel is located on the inner side of the pontoon 1 and connected to the mud storage chamber 171, and the second end is located on the outer side of the pontoon 1; the first end of the delivery pipeline can be inserted in the first channel, and the second end can be connected to the outlet of the seawater pump 7.

[0070] like Figure 2 As shown, the buoyancy box 1 is reserved with a first channel, the inner end of the first channel extends to the mud storage chamber 171 and is connected thereto, and the outer end of the first channel extends to the outer side surface of the buoyancy box 1 .

[0071] During assembly, after a preset volume of gas is filled into the floating chamber 161, one end of the delivery pipeline is connected to the outlet of the seawater pump 7, and the other end of the delivery pipeline is inserted into the first channel. The seawater pump 7 is set on the self-elevating marine platform or on the pontoon 1, and the inlet of the seawater pump 7 is connected to the location where the mud solution is required through a pipeline, and the power pipeline of the seawater pump 7 is connected to the platform power. When in use, the seawater pump 7 is started to suck the liquid through the seawater pump 7 and transport it to the mud storage chamber 171 through the delivery pipeline.

[0072] In this embodiment, the solution required for preparing the mud can be transported into the mud storage chamber 171 through the seawater pump 7 to meet functional requirements.

[0073] On the basis of the above embodiment, the buoyancy tank 1 is provided with a rotatable agitator 8, which is inserted into the mud storage chamber 171 to agitate the mud in the mud storage chamber 171. Figure 2 and Figure 3 As shown, the mud can be effectively prevented from condensing, and can be diluted, and the uniformity of the mud in the mud storage cavity 171 can be ensured.

[0074] In one implementation method, the buoyancy tank 1 is provided with a reserved installation space to accommodate the driving motor of the agitator 8 .

[0075] It should be noted that there is no limitation on the type of the agitator 8, such as a turbine agitator 8 or an inclined blade agitator 8, etc., as long as the slurry can be stirred.

[0076] On the basis of the above embodiment, it also includes an impeller 9 and a connecting rod 10; the first end of the connecting rod 10 can be connected to the impeller 9, the buoyancy tank 1 has a second channel, the second end of the connecting rod 10 can be inserted into the second channel, and connected to or separated from the agitator 8 to connect the agitator 8 and the impeller 9 coaxially, and when the connecting rod 10 is connected to the agitator 8 in place, the impeller 9 is located at the outer bottom of the buoyancy tank 1.

[0077] like Figure 2 and Figure 3 As shown, the buoyancy tank 1 is provided with a second channel, the inner end of which extends toward the mud storage chamber 171 and is connected thereto, and the outer end extends to the outer side surface of the buoyancy tank 1; and is equipped with an impeller 9 and a connecting rod 10, the upper end of the connecting rod 10 can be inserted into the second channel, and connected to the rotating shaft of the agitator 8 through a snap-in terminal or a lock, so that the connecting rod 10 and the impeller 9 can rotate synchronously, and the impeller 9 can be installed on the lower end of the connecting rod 10, such as by snap-in or pin-in, so that the connecting rod 10 and the impeller 9 can rotate synchronously.

[0078] During assembly, after a preset volume of gas is filled into the floating chamber 161, the upper end of the connecting rod 10 is inserted into the second channel to connect it to the agitator 8, and an impeller 9 is arranged at the lower end of the connecting rod 10, so that the impeller 9 and the agitator 8 are coaxially fixedly connected through the connecting rod 10. When in use, the buoyancy box 1 is placed on the sea surface, and the impeller 9 will rotate with the waves and currents in the sea, continuously stirring the mud in the mud storage chamber 171.

[0079] On the basis of the above-mentioned embodiment, the bottom end of the buoyancy tank 1 has a connection seat so that the seawater pump 7 can be arranged at the bottom of the buoyancy tank 1, and the seawater pump 7 is an electric submersible pump.

[0080] like Figure 2 As shown, the mounting seat is located at the bottom end of the pontoon 1. The mounting seat can be a seat body that is bonded to the pontoon 1 body or is integrally formed with the pontoon 1 body, and is provided with a connecting hole so that the seawater pump 7 can be connected through a strap or a snap-on terminal, etc., so that the seawater pump 7 can be set on the outside of the pontoon 1 through the mounting seat. Of course, the mounting seat is not limited to the above-mentioned example type, as long as the seawater pump 7 can be installed after the floating chamber 161 is filled with gas.

[0081] During assembly, after a preset volume of gas is filled into the floating chamber 161, the seawater pump 7 is set at the bottom of the pontoon 1. When in use, the pontoon 1 is placed on the sea surface and the seawater pump 7 is started to extract seawater from the sea to meet the mud configuration needs, which is beneficial to saving electricity for the self-elevating offshore platform.

[0082] On the basis of the above embodiment, an anti-corrosion layer 18 is provided between the outer liner 16 and the inner body 17. Figure 2 As shown, an anti-corrosion layer 18 is coated on the inner wall surface of the outer liner 16 and / or the surface of the inner body 17, which can be an epoxy resin coating or a polyolefin coating. The anti-corrosion layer 18 is located between the outer liner 16 and the inner body 17, so as to ensure the corrosion resistance of the floating mud storage device, facilitate manufacturing, and extend the service life.

[0083] On the basis of the above embodiment, a lifting member 15 is provided at the top of the buoyancy box 1. Figure 2 and Figure 3 As shown, the lifting member 15 can be a lifting ring or a lifting hook, etc., so as to facilitate the lifting of the buoyancy box 1 to the sea surface through the lifting device.

[0084] On the basis of the above embodiment, it also includes a first cabin pipeline 13 and a second cabin pipeline 14, the first end of the first cabin pipeline 13 is used to connect to the outlet of the mud inlet pump 2, and the second end is used to connect to the mud cabin 19, the first end of the second cabin pipeline 14 is used to connect to the inlet of the mud return pump 3, and the second end is used to connect to the mud cabin 19.

[0085] like Figure 1 and Figure 3 As shown, during assembly, the outlet of the mud inlet pump 2 and the mud tank 19 are connected through the first cabin pipeline 13, and the inlet of the mud return pump 3 and the mud tank 19 are connected through the second cabin pipeline 14. When in use, the mud inlet pump 2 is started, and the mud in the mud storage chamber 171 can be sucked by the mud inlet pump 2, and the mud is transported to the mud tank 19 of the self-elevating marine platform through the mud inlet pipeline 11 and the first cabin pipeline 13. When the mud return pump 3 is started, the mud in the mud tank 19 of the self-elevating marine platform can be sucked by the mud return pump 3, and the mud is transported to the mud storage chamber 171 through the mud outlet pipeline 12 and the second cabin pipeline 14.

[0086] On the basis of the above-mentioned embodiment, the peripheral surface of the pontoon 1 has a load scale, so that the operator can observe the draft of the pontoon 1 to prevent the pontoon 1 from sinking.

[0087] Furthermore, the top of the pontoon 1 has a second mounting base to which a detector can be detachably connected for detecting the draft of the pontoon 1. For example, the detector can use a camera to detect the load scale in real time, or the detector can use a displacement sensor to detect its distance from the sea surface in real time. Of course, the detector is not limited to the above-mentioned types, as long as it can detect the draft of the pontoon 1.

[0088] Furthermore, it also includes a controller, and the controller, the mud feed pump 2, and the mud return pump 3 are all connected to the detector signal. The controller can control the start and stop of the mud feed pump 2 and the mud return pump 3 according to the real-time draft of the pontoon 1. With this arrangement, the floating mud storage device has a high degree of automation.

[0089] In addition to the above-mentioned floating mud storage device, the utility model also provides a self-elevating marine platform including the floating mud storage device disclosed in the above-mentioned embodiment, and the self-elevating marine platform also includes a main deck, and the mud feed pump 2 and the mud return pump 3 can be arranged on the main deck. For the structures of other parts of the self-elevating marine platform, please refer to the prior art and will not be repeated in this article.

[0090] Furthermore, a crane 20 is provided on the main deck to facilitate lifting the pontoon 1 .

[0091] It should be noted that the relational terms such as "first" and "second" mentioned above are merely used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between these entities; the "upper surface, lower surface, top, bottom" and the directional words "upper, lower, left, right" mentioned above are all defined based on the drawings in the specification.

[0092] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0093] The above is a detailed introduction to the floating mud storage device and the self-elevating offshore platform provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A floating mud storage device, characterized in that: include: A buoyancy box (1) having an elastic structure, the buoyancy box (1) having a mud storage chamber (171) for storing mud, and a side wall of the mud storage chamber (171) having a floating chamber (161) and an air charging port (162), the air charging port (162) being connected to the floating chamber (161), and gas can be charged into the floating chamber (161) or discharged through the air charging port (162); A mud pump (2), the inlet of which is used to communicate with the mud storage chamber (171), and the outlet of which is used to communicate with the mud tank (19) of the self-elevating offshore platform, so as to pump the mud in the mud storage chamber (171) into the mud tank (19); A mud return pump (3) has an inlet for communicating with the mud chamber (19) and an outlet for communicating with the mud storage chamber (171), so as to pump the mud in the mud chamber (19) into the mud storage chamber (171).

2. The floating mud storage device according to claim 1, characterized in that The buoyancy box (1) comprises an elastic outer bladder (16) and an inner body (17); the outer bladder (16) and the inner body (17) are both hollow structures; the inner body (17) is sleeved inside the outer bladder (16); and the inner body (17) can be opened or contracted synchronously with the outer bladder (16); the inflation port (162) is located on the outer side wall of the outer bladder (16).

3. The floating mud storage device according to claim 2, characterized in that The buoyancy box (1) is provided with a first delivery pipeline (4), a first end of the first delivery pipeline (4) is connected to the mud storage chamber (171) of the buoyancy box (1) to which it is connected, and a second end of the first delivery pipeline (4) has a first pipeline joint; The mud storage chambers (171) of a plurality of the buoyancy boxes (1) can be connected in sequence via the corresponding first delivery pipelines (4) and the first pipeline joints.

4. The floating mud storage device according to claim 3, characterized in that At least one of the buoyancy boxes (1) is provided with a mud inlet pipeline (11), and at least another of the buoyancy boxes (1) is provided with a mud outlet pipeline (12); The first ends of the mud inlet pipeline (11) and the mud outlet pipeline (12) are in communication with the bottom end of the mud storage chamber (171) of the buoyancy box (1) to which they are connected; The second end of the mud inlet pipeline (11) extends to the outside of the buoyancy tank (1) to which it is connected, and is used to connect to the inlet of the mud inlet pump (2); The second end of the mud discharge pipeline (12) extends to the outside of the buoyancy tank (1) to which it is connected, and is used to be connected to the outlet of the mud return pump (3).

5. The floating mud storage device according to claim 3, characterized in that It also includes a second delivery pipeline (5) and a stop valve (6); One end of the stop valve (6) can be connected to the corresponding first pipe joint to communicate with the first delivery pipeline (4); The first end and the second end of the second delivery pipeline (5) both have a second pipeline joint, the second end of the stop valve (6) can be connected to the second pipeline joint corresponding to the first end of the second delivery pipeline (5), and the second pipeline joint at the second end of the second delivery pipeline (5) of one buoy (1) can be conductively connected to the second pipeline joint at the second end of the second delivery pipeline (5) of another buoy (1).

6. The floating mud storage device according to claim 3, characterized in that It also includes a seawater pump (7) and a delivery pipeline; The buoyancy box (1) has a first channel, a first end of the first channel is located on the inner side of the buoyancy box (1) and communicates with the mud storage cavity (171), and a second end of the first channel is located on the outer side of the buoyancy box (1); The first end of the delivery pipeline can be inserted into the first channel, and the second end can be connected to the outlet of the seawater pump (7).

7. The floating mud storage device according to claim 3, characterized in that The buoyancy box (1) is provided with a rotatable agitator (8), and the agitator (8) is inserted into the mud storage chamber (171) to agitate the mud in the mud storage chamber (171).

8. The floating mud storage device according to claim 7, characterized in that It also includes an impeller (9) and a connecting rod (10); The first end of the connecting rod (10) can be connected to the impeller (9), and the buoyancy box (1) has a second channel. The second end of the connecting rod (10) can be inserted into the second channel and connected to or separated from the agitator (8) to connect the agitator (8) and the impeller (9) coaxially. When the connecting rod (10) and the agitator (8) are connected in place, the impeller (9) is located at the outer bottom of the buoyancy box (1).

9. The floating mud storage device according to claim 6, characterized in that The bottom end of the buoyancy box (1) has a connection seat so that the seawater pump (7) can be arranged at the bottom of the buoyancy box (1), and the seawater pump (7) is an electric submersible pump; And / or, an anti-corrosion layer (18) is provided between the outer bladder (16) and the inner body (17); And / or, a lifting member (15) is provided at the top of the buoyancy box (1); And / or, it also includes a first cabin pipeline (13) and a second cabin pipeline (14), wherein the first end of the first cabin pipeline (13) is used to connect to the outlet of the mud inlet pump (2), and the second end is used to connect to the mud cabin (19), and the first end of the second cabin pipeline (14) is used to connect to the inlet of the mud return pump (3), and the second end is used to connect to the mud cabin (19).

10. A self-elevating offshore platform, comprising a main deck, characterized in that: It also comprises the floating mud storage device according to any one of claims 1 to 9, wherein the mud feed pump (2) and the mud return pump (3) can both be arranged on the main deck.

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