Floating slurry storage device and self-elevating ocean platform

Abstract

The invention 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] This invention relates to the field of offshore equipment technology, and more specifically, to a floating mud storage device. Furthermore, this invention also relates to a jack-up offshore platform including the aforementioned floating mud storage device. Background Technology

[0002] A jack-up offshore platform is a type of equipment used for drilling operations in offshore oil fields. Due to the large waves at sea and the fact that the work sites are far from land, it is not easy to resupply the platform. Therefore, the platform supplies its own fuel, drinking water, industrial fresh water, barite, drilling mud, and various drilling tools and equipment. This method helps to reduce the sea transportation of various spare materials and lower production costs.

[0003] The main method for storing drilling mud is to install mud tanks on the main body of the platform, and these mud tanks are generally located at the stern of the platform. The mud excavated during drilling operations usually needs to be treated by a purification module before being injected into the mud tanks.

[0004] As offshore oilfield exploration develops year by year, the requirements for the capabilities 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 special downhole conditions, the mud storage capacity required in the mud tank is greatly increased compared to ordinary conventional wells. To avoid the situation where the mud in the mud tank cannot meet the production requirements, so that the platform can complete drilling operations normally and ensure economic benefits, the existing technology mainly involves transporting mud tanks by transport ships, hoisting them onto the main deck by cranes, and connecting the mud tanks and mud chambers with pipelines to replenish the mud in the mud tanks into the mud chambers. However, the effect is not ideal. The deck space is narrow and crowded, making it inconvenient to install, and it is difficult to install large mud tanks, which makes it difficult to generate high economic benefits.

[0005] In conclusion, how to improve economic efficiency while ensuring that the amount of drilling mud meets the needs of drilling operations is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a floating mud storage device that can ensure that the mud quantity meets the drilling operation requirements and improve economic efficiency.

[0007] Another object of the present invention is to provide a jack-up offshore platform including the above-described floating mud storage device.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A floating mud storage device, comprising:

[0010] The floating box is an elastic structure. The floating box has a mud storage cavity for storing mud, and the side wall of the mud storage cavity has a floating cavity and an air inlet. The air inlet is connected to the floating cavity, and gas can be injected into the floating cavity or discharged through the air inlet.

[0011] The mud pump has an inlet for connecting to the mud storage chamber and an outlet for connecting to the mud tank of the jack-up offshore platform, so as to pump the mud in the mud storage chamber to the mud tank.

[0012] The mud return pump has an inlet connected to the mud tank and an outlet connected to the mud storage chamber, so as to pump the mud in the mud tank to the mud storage chamber.

[0013] Preferably, the float includes an elastic outer liner and an inner body, both of which are hollow structures. The inner body is fitted inside the outer liner and can open or close synchronously with the outer liner. The air inlet is located on the outer wall of the outer liner.

[0014] Preferably, the float is provided with a first conveying pipeline, the first end of the first conveying pipeline is connected to the mud storage cavity of the float to which it is connected, and the second end of the first conveying pipeline has a first pipe joint.

[0015] The mud storage chambers of several of the floating boxes can be sequentially connected via the corresponding first conveying pipeline and the first pipe joint.

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

[0017] The first end of the mud inlet pipeline and the first end of the mud outlet pipeline are connected to the bottom end of the mud storage chamber of the floating box to which they are connected.

[0018] The second end of the sludge inlet pipeline extends to the outside of the float box to which it is connected, and is used to connect to the inlet of the sludge inlet pump;

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

[0020] Preferably, it also includes a second delivery line and a shut-off valve;

[0021] One end of the shut-off valve can be connected to the corresponding first pipe joint to connect the first delivery pipeline;

[0022] The first and second ends of the second delivery pipeline each have a second pipe joint. The second end of the shut-off valve can be connected to the second pipe joint at the first end of the corresponding second delivery pipeline, and the second pipe joint at the second end of the second delivery pipeline of one float can be connected to the second pipe joint at the second end of the second delivery pipeline of the other float.

[0023] Preferably, it also includes seawater pumps and delivery pipelines;

[0024] The pontoon has a first channel, with a first end located inside the pontoon and connected to the mud storage chamber, and a second end located outside the pontoon.

[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 pontoon is equipped with a rotatable agitator, which is inserted into the mud storage chamber to agitate the mud slurry 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, the float has a second channel, the second end of the connecting rod can be inserted into the second channel and connected or disconnected 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 bottom outer side of the float.

[0029] Preferably, the bottom end of the pontoon has a connecting seat so that the seawater pump can be installed at the bottom of the pontoon, 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, the top of the pontoon is provided with a lifting device;

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

[0033] A jack-up offshore platform includes a main deck and a floating mud storage device as described in any of the above claims, wherein the mud inlet pump and the mud return pump can both be located on the main deck.

[0034] The floating mud storage device provided by the present invention has a double-layer structure. The inner layer has a mud storage cavity, while the outer layer is a floating cavity between the inner and outer layers. An air inlet is provided on the outer layer to allow gas to be injected into the floating cavity. The floating box has a channel through which pipes can be inserted to connect the mud storage cavity and the outside of the floating box, so that mud pumps and mud return pumps can be connected through pipelines.

[0035] The beneficial effects are as follows: During use, gas is injected into the floating chamber to open the pontoon, which is then placed in the sea. The gas in the floating chamber provides buoyancy, allowing it to float on the sea surface. Pipelines connect the pontoon's mud chamber to the inlet of the mud pump and the pontoon's mud chamber to the outlet of the mud return pump. Finally, the outlet of the mud pump and the inlet of the mud return pump are connected to the mud tank of the jack-up offshore platform. This allows mud from the jack-up platform's mud tank to be pumped into the pontoon for storage. When drilling is completed, the mud in the pontoon is pumped back to the jack-up platform's mud tank, and the pontoon is pulled back to the jack-up platform, releasing the gas from the floating chamber. This floating mud storage device eliminates the need for the pontoon to occupy deck space on the jack-up platform, facilitating the handling of larger volumes of mud and improving economic efficiency. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a top view schematic diagram of a specific embodiment provided by the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of the pontoon provided in a specific embodiment of the present invention;

[0039] Figure 3 This is a front view schematic diagram of a specific embodiment provided by the present invention;

[0040] Figure 4 This is another top view schematic diagram of a specific embodiment provided by the present invention;

[0041] Figure 5 This is another top view schematic diagram of a specific embodiment provided by the present invention.

[0042] Figure label:

[0043] 1-Floating box; 2-Inlet pump; 3-Return pump; 4-First conveying pipeline; 5-Second conveying pipeline; 6-Stop valve; 7-Seawater pump; 8-Agitator; 9-Impeller; 10-Connecting rod; 11-Inlet pipeline; 12-Outlet pipeline; 13-First compartment pipeline; 14-Second compartment pipeline; 15-Lifting component; 16-Outer liner; 161-Floating cavity; 162-Inflation port; 17-Inner body; 171-Sludge storage cavity; 18-Anti-corrosion layer;

[0044] 19-Mud chamber; 20-Crane. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] The core of this invention is to provide a floating mud storage device that ensures sufficient mud volume for drilling operations while also improving economic efficiency. Another core aspect of this invention is to provide a jack-up offshore platform incorporating the aforementioned floating mud storage device.

[0047] Please refer to Figure 1 This invention provides a floating mud storage device, including a float 1, a mud inlet pump 2, and a mud return pump 3. The float 1 is an elastic structure with a mud storage chamber 171 for storing mud. The side wall of the mud storage chamber 171 has a floating cavity 161 and an air inlet 162. The air inlet 162 connects to the floating cavity 161, allowing gas to be introduced into or discharged from the floating cavity 161. The inlet of the mud inlet pump 2 connects to the mud storage chamber 171, and the outlet connects to the mud tank 19 of a jack-up offshore platform, to pump mud from the mud storage chamber 171 to the mud tank 19. The inlet of the mud return pump 3 connects to the mud tank 19, and the outlet connects to the mud storage chamber 171, to pump mud from the mud tank 19 to the mud storage chamber 171.

[0048] like Figures 1 to 3 As shown, the float box 1 has a double-layer structure. The inner layer has a mud storage chamber 171 inside, while the outer layer is connected to the inner layer by a floating chamber 161. An air inlet 162 is provided on the outer layer to allow gas to be injected into the floating chamber 161. The float box 1 also has a channel through which pipes can be inserted to connect the mud storage chamber 171 and the outside of the float box 1, so that the mud inlet pump 2 and the mud return pump 3 can be connected via pipelines.

[0049] During assembly, gas is injected into the floating cavity 161 to open the pontoon 1. Then, pipelines are used to connect the mud chamber of the pontoon 1 to the inlet of the mud pump 2 and the mud chamber of the pontoon 1 to the outlet of the mud return pump 3. The outlet of the mud pump 2 and the inlet of the mud return pump 3 are connected to the mud tank 19 of the jack-up offshore platform. The power lines of the mud pump 2 and the mud return pump 3 are connected to the platform's power supply. Then, the pontoon 1 is placed in the sea. The gas in the floating cavity 161 can provide buoyancy for the pontoon 1 to float on the sea surface.

[0050] When in use, start the mud pump 2 to pump the mud from the mud tank 19 of the jack-up offshore platform to the pontoon 1 for storage; when drilling is completed, start the mud return pump 3 to pump the mud from the mud storage chamber 171 back to the mud tank 19 of the jack-up offshore platform, then pull the pontoon 1 back to the jack-up offshore platform and release the gas in the floating chamber 161.

[0051] When in use, the floating mud storage device does not require the pontoon 1 used to hold the mud to occupy the deck space of the jack-up offshore platform. This is beneficial for meeting the demand for a large volume of mud, improving economic efficiency, and enhancing the applicability of various types of jack-up offshore platforms. It is also low in cost, easy to operate, and convenient to store, thus saving space on the jack-up offshore platform.

[0052] Based on the above embodiments, the float 1 includes an elastic outer liner 16 and an inner body 17. Both the outer liner 16 and the inner body 17 are hollow structures. The inner body 17 is fitted inside the outer liner 16, and the inner body 17 can open or close synchronously with the outer liner 16. The air inlet 162 is located on the outer side wall of the outer liner 16.

[0053] In this embodiment, such as Figure 2 and Figure 3 As shown, the outer liner 16 has a double-wall structure, with a space between its outer and inner walls serving as a floating cavity 161. The inner body 17 is fixed to the inner wall of the outer liner 16, for example, by adhesive or rubber strips, so that the inner body 17 can contract or expand synchronously with the outer liner 16. This arrangement helps to ensure the buoyancy provided by the outer liner 16 and ensures the sludge holding capacity of the floating sludge storage device, making it convenient to use and with a long service life.

[0054] Based on the above embodiments, the float 1 is provided with a first conveying pipeline 4, the first end of the first conveying pipeline 4 is connected to the mud storage cavity 171 of the float 1 to which it is connected, and the second end of the first conveying pipeline 4 has a first pipe joint; the mud storage cavities 171 of several floats 1 can be sequentially connected through the corresponding first conveying pipeline 4 and the first pipe joint.

[0055] like Figure 1As shown, a first conveying pipeline 4 is provided on the float 1. The first end of the first conveying pipeline 4 is inserted into the circumferential wall of the float 1, extends into the mud storage cavity 171 and communicates with it, so that the mud in the mud storage cavity 171 can flow into the first conveying pipeline 4. The second end of the first conveying pipeline 4 extends to the outside of the float 1 and is equipped with a first pipe joint, such as a flange, a plug joint or a threaded joint, so that the mud storage cavities 171 of adjacent floats 1 can be connected through their respective first conveying pipelines 4. With this configuration, the floating mud storage device can easily meet the mud requirements of different volumes.

[0056] It should be noted that there are no restrictions on the number or distribution of the first delivery pipeline 4, as long as the above functions can be achieved.

[0057] For example, optional, such as Figure 2 As shown, there are two float boxes 1, and each float box 1 has a first conveying pipeline 4. During installation, the two float boxes 1 are set up opposite each other. At this time, the first conveying pipeline 4 connected to the float box 1 extends from the side of the float box 1 opposite to the other float box 1. The first pipe joints of the adjacent free ends of the two first conveying pipelines 4 are connected, which can connect the mud storage chamber 171 of the two float boxes 1; 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 pontoons 1 are equipped with a first conveying pipeline 4, and the second pontoons 1 are equipped with two first conveying pipelines 4. During installation, the first pontoons 1, the second pontoons 1 and the first pontoons 1 are connected in sequence through the corresponding first conveying pipelines 4 to form a series, 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. Each pontoon 1 is equipped 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 pontoon 1 and the first conveying pipeline 4 on the second side of the other pontoon 1 to connect several pontoons 1 into a series. The first conveying pipeline 4 located on the far end pontoon 1 in the series of several pontoons 1 that is not used to connect pontoons 1 is blocked, for example by setting a switch valve and closing the switch valve, or by setting a plug, etc. In this way, the mud storage chambers 171 of several pontoons 1 can be connected through the first conveying pipelines 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 section of the first conveying pipeline 4 inserted inside the float box 1 extends in a straight line, and the outer end of the first conveying pipeline 4 located on the outer surface of the float box 1 is lower than its corresponding inner end, so as to ensure that all the mud in the mud storage chamber 171 flows out. Moreover, the manufacturing difficulty is low, which effectively reduces the manufacturing cost of the floating mud storage device.

[0061] Based on the above embodiments, at least one pontoon 1 is provided with a mud inlet pipe 11, and at least another pontoon 1 is provided with a mud outlet pipe 12; the first ends of the mud inlet pipe 11 and the mud outlet pipe 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 pipe 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 pipe 12 extends to the outside of the pontoon 1 to which it is connected, and is used to connect to the outlet of the mud return pump 3.

[0062] like Figure 2 and Figure 3 As shown, the first ends of the mud inlet pipe 11 and the mud outlet pipe 12 are inserted into the periphery of the floating box 1, extending into and communicating with the mud storage cavity 171, so that the mud in the mud storage cavity 171 can flow into the mud outlet pipe 12, and the mud in the mud inlet pipe 11 can flow into the mud storage cavity 171. The second ends of the mud inlet pipe 11 and the mud outlet pipe 12 extend to the outside of the floating box 1, so as to connect the corresponding mud inlet pump 2 and the mud return pump 3. With this configuration, when in use, gas is filled into the floating cavity 161, and then the second end of the mud inlet pipe 11 is connected to the mud inlet pump 2, and the second end of the mud outlet pipe 12 is connected to the mud return pump 3. Thus, the floating mud storage device is easy to use.

[0063] Based on the above embodiments, it also includes a second delivery pipeline 5 and a shut-off valve 6; one end of the shut-off valve 6 can be connected to a corresponding first pipe joint to connect the first delivery pipeline 4; both the first and second ends of the second delivery pipeline 5 have second pipe joints, the second end of the shut-off valve 6 can be connected to the second pipe joint of the corresponding first end of the second delivery pipeline 5, and the second pipe joint of the second end of the second delivery pipeline 5 of one float box 1 can be connected to the second pipe joint of the second end of the second delivery pipeline 5 of another float box 1.

[0064] like Figure 1 , Figure 4 and Figure 5 As shown, the first conveying pipeline 4 has a first pipe joint at one end located outside the float 1, and the second conveying pipeline 5 has a second pipe joint at both ends.

[0065] It should be noted that there are no restrictions on the types of the first and second pipe joints, such as plug joints or flanges. Of course, the first and second pipe joints can be the same or different, as long as a conductive connection can be achieved.

[0066] It should also be noted that there are no restrictions on the type of shut-off valve 6, such as a switching valve or a regulating valve with adjustable opening, as long as it can connect or isolate adjacent mud storage chambers.

[0067] During assembly, first connect the corresponding shut-off valve 6 and the second conveying pipeline 5 to each float 1. Specifically, connect one end of the first conveying pipeline 4 located outside the float 1 to one open end of the shut-off valve 6 through a first pipe joint, and connect the other open end of the shut-off valve 6 to one end of the second conveying pipeline 5 through a second pipe joint. Then, connect the mud storage chamber 171 of each float 1, that is, connect the second conveying pipelines 5 connected to two adjacent floats 1 through the second pipe joint.

[0068] With this configuration, operators can easily install shut-off valves 6 between adjacent float boxes 1 as needed to meet the sludge storage function of float box 1, or to meet the sludge storage and circulation function of float box 1.

[0069] Based on 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 inside the pontoon 1 and connects to the mud storage chamber 171, and the second end is located outside the pontoon 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.

[0070] like Figure 2 As shown, the pontoon 1 has a first channel, the inner end of which extends toward and communicates with the mud storage chamber 171, and the outer end extends to the outer side of the pontoon 1.

[0071] During assembly, after filling the floating cavity 161 with a preset volume of gas, connect one end of the delivery pipeline to the outlet of the seawater pump 7, insert the other end of the delivery pipeline into the first channel, set the seawater pump 7 on the self-elevating marine platform or the floating box 1, and connect the inlet of the seawater pump 7 to the location where the mud solution is required through the pipeline. Connect the power line of the seawater pump 7 to the platform power. When in use, start the seawater pump 7 to draw liquid through the seawater pump 7 and deliver it to the mud storage cavity 171 through the delivery pipeline.

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

[0073] Based on the above embodiment, the float 1 is equipped with a rotatable agitator 8, which is inserted into the mud storage chamber 171 to agitate the mud slurry in the mud storage chamber 171, such as... Figure 2 and Figure 3 As shown, it effectively prevents mud from coagulating, dilutes the mud, and ensures the uniformity of the mud in the mud storage chamber 171.

[0074] In one way, the float 1 has reserved installation space to accommodate the drive motor of the agitator 8.

[0075] It should be noted that there are no restrictions on the type of mixer 8, such as turbine mixer 8 or slant paddle mixer 8, as long as it can achieve the mixing of mud.

[0076] Based on 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 float box 1 has a second channel, the second end of the connecting rod 10 can be inserted into the second channel and connected 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 bottom outer side of the float box 1.

[0077] like Figure 2 and Figure 3 As shown, the float box 1 has a second channel. The inner end of the second channel extends to and communicates with the mud storage chamber 171, and the outer end extends to the outer side of the float box 1. It 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-fit ​​terminal or locking device, so that the connecting rod 10 and the impeller 9 can rotate synchronously. The lower end of the connecting rod 10 can be fitted with the impeller 9, such as by snap-fit ​​or pin connection, so that the connecting rod 10 and the impeller 9 can rotate synchronously.

[0078] During assembly, after filling the floating chamber 161 with a preset volume of gas, 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 set 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 floating box 1 is placed on the sea surface, and the impeller 9 will rotate with the waves and currents in the sea, continuously agitating the mud in the mud storage chamber 171.

[0079] Based on the above embodiment, the bottom of the float 1 has a connecting seat so that the seawater pump 7 can be installed at the bottom of the float 1, and the seawater pump 7 is an electric submersible pump.

[0080] like Figure 2 As shown, the mounting base is located at the bottom of the float box 1. The mounting base can be a seat body that is bonded to the body of the float box 1 or integrally formed with the body of the float box 1, and has a connection hole so that the seawater pump 7 can be connected by straps or snap-fit ​​terminals. The seawater pump 7 can be set on the outside of the float box 1 through the mounting base. Of course, the mounting base is not limited to the type of example above, as long as the seawater pump 7 can be installed after the floating cavity 161 is filled with gas.

[0081] During assembly, after filling the floating cavity 161 with a preset volume of gas, the seawater pump 7 is placed 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 draw seawater from the sea to meet the needs of mud preparation, which helps to save electricity for the self-elevating offshore platform.

[0082] Based on the above embodiment, an anti-corrosion layer 18 is provided between the outer liner 16 and the inner body 17, such as... 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. The anti-corrosion layer 18 can be an epoxy resin coating or a polyolefin coating, etc. The anti-corrosion layer 18 is located between the outer liner 16 and the inner body 17, which helps to ensure the corrosion resistance of the floating mud storage device, facilitates manufacturing, and extends service life.

[0083] Based on the above embodiment, the top of the pontoon 1 is provided with a lifting component 15, such as... Figure 2 and Figure 3 As shown, the lifting component 15 can be a lifting ring or hook, etc., so as to lift the pontoon 1 to the sea surface through the lifting device.

[0084] Based on the above embodiments, it also includes a first chamber pipeline 13 and a second chamber pipeline 14. The first end of the first chamber pipeline 13 is used to connect to the outlet of the mud pump 2 and the second end is used to connect to the mud chamber 19. The first end of the second chamber pipeline 14 is used to connect to the inlet of the return mud pump 3 and the second end is used to connect to the mud chamber 19.

[0085] like Figure 1 and Figure 3 As shown, during assembly, the outlet of the mud pump 2 and the mud tank 19 are connected through the first hull pipeline 13, and the inlet of the return mud pump 3 and the mud tank 19 are connected through the second hull pipeline 14. When in use, the mud pump 2 is started, which can suck mud from the mud storage chamber 171 and transport the mud to the mud tank 19 of the jack-up offshore platform through the mud inlet pipeline 11 and the first hull pipeline 13. The return mud pump 3 is started, which can suck mud from the mud tank 19 of the jack-up offshore platform and transport the mud to the mud storage chamber 171 through the mud outlet pipeline 12 and the second hull pipeline 14.

[0086] Based on the above embodiment, the circumference 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 for detachably connecting a detector to detect the draft of the pontoon 1. For example, the detector may be a camera to detect the load scale in real time, or the detector may be a displacement sensor to detect its distance from the sea surface in real time. Of course, the detector is not limited to the above examples, as long as it can detect the draft of the pontoon 1.

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

[0089] In addition to the above-mentioned floating mud storage device, the present invention also provides a jack-up marine platform including the floating mud storage device disclosed in the above embodiments. The jack-up marine platform also includes a main deck, and the mud inlet pump 2 and the mud return pump 3 can both be located on the main deck. For the structure of other parts of the jack-up marine platform, please refer to the prior art, which will not be described in detail here.

[0090] Furthermore, the main deck is equipped with a crane 20 to facilitate the lifting of the pontoon 1.

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

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

[0093] The above provides a detailed description of the floating mud storage device and self-elevating offshore platform provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of this invention.

Claims

1. A floating mud storage device, characterized in that, include: The float (1) is an elastic structure. The float (1) has a mud storage cavity (171) for storing mud, and the side wall of the mud storage cavity (171) has a floating cavity (161) and an air inlet (162). The air inlet (162) is connected to the floating cavity (161). Gas can be injected into the floating cavity (161) or gas can be discharged through the air inlet (162). The mud pump (2) has an inlet for connecting to the mud storage chamber (171) and an outlet for connecting to the mud tank (19) of the jack-up offshore platform, so as to pump the mud in the mud storage chamber (171) to the mud tank (19). The mud return pump (3) has an inlet for connecting to the mud tank (19) and an outlet for connecting to the mud storage chamber (171) to pump the mud in the mud tank (19) to the mud storage chamber (171).

2. The floating mud storage device according to claim 1, characterized in that, The float (1) includes an elastic outer liner (16) and an inner body (17). Both the outer liner (16) and the inner body (17) are hollow structures. The inner body (17) is fitted inside the outer liner (16), and the inner body (17) can open or close synchronously with the outer liner (16). The air inlet (162) is located on the outer side wall of the outer liner (16).

3. The floating mud storage device according to claim 2, characterized in that, 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 cavity (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 of the floating boxes (1) can be sequentially connected through the corresponding first conveying pipeline (4) and the first pipe joint.

4. The floating mud storage device according to claim 3, characterized in that, At least one of the floating boxes (1) is provided with a mud inlet pipe (11), and at least another floating box (1) is provided with a mud outlet pipe (12). The first end 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 float (1) to which they are connected; The second end of the sludge inlet pipeline (11) extends to the outside of the float box (1) to which it is connected, and is used to connect to the inlet of the sludge inlet pump (2); The second end of the mud discharge pipeline (12) extends to the outside of the float box (1) to which it is connected, for connecting 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 shut-off valve (6); One end of the shut-off valve (6) can be connected to the corresponding first pipe joint to connect the first delivery pipeline (4). The first and second ends of the second delivery pipeline (5) are each equipped with a second pipe joint. The second end of the shut-off valve (6) can be connected to the second pipe joint at the first end of the corresponding second delivery pipeline (5). The second pipe joint at the second end of the second delivery pipeline (5) of one float (1) can be connected to the second pipe joint at the second end of the second delivery pipeline (5) of another float (1).

6. The floating mud storage device according to claim 3, characterized in that, It also includes seawater pumps (7) and delivery pipelines; The float (1) has a first channel, the first end of which is located inside the float (1) and connected to the mud storage chamber (171), and the second end is located outside the float (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 pontoon (1) is equipped with a rotatable agitator (8), which 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). The float (1) has a second channel. The second end of the connecting rod (10) can be inserted into the second channel and connected 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 bottom outer side of the float (1).

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

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

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