Underwater large oil and water replacing oil storing and unloading device suitable for marine petroleum exploitation and operation method of underwater large oil and water replacing oil storing and unloading device
A technology for offshore oil and oil-water replacement, which is applied to large containers, packaging, transportation and packaging, etc., can solve the problems of difficult on-site operation, high requirements for oil storage and unloading design process, and achieve high safety and reliability, design and construction and The effect of low operating cost and simple process
Active Publication Date: 2019-11-29
OFFSHORE OIL ENG CO LTD +2
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Problems solved by technology
Compared with the dry oil storage device, since the wet oil storage device is located underwater, the design process requirements for oil storage and unloading are higher, and the on-site operation is more difficult
Method used
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[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout.
[0030] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0031] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable conne...
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The invention discloses an underwater large oil and water replacing oil storing and unloading device suitable for marine petroleum exploitation and an operation method of the underwater large oil andwater replacing oil storing and unloading device. The device comprises a deck, a seabed oil storage cabin, an oil inlet pipeline, a replacing water tank, a water storage pump, a ballast water tank, aballast water pump and an oil discharging pipeline. The oil inlet pipeline is positioned on the deck. The top of the replacing water tank communicates with the atmosphere, and the bottom of the replacing water tank selectively communicates with the bottom of the seabed oil storage cabin through a water inlet pipeline. An outlet of the water storage pump communicates with the replacing water tank.The bottom of the ballast water tank communicates with the bottom of the seabed oil storage cabin through a water discharging pipeline. The top end of an outlet of the oil discharging pipeline is lower than a first water overflow opening in the replacing water tank. By means of the underwater large oil and water replacing oil storing and unloading device suitable for marine petroleum exploitationand the operation method of the underwater large oil and water replacing oil storing and unloading device, the static pressure water head difference is ingeniously used for achieving underwater storage operation and unloading operation of crude oil, no oil pump conveying equipment is needed, and the system complexity is lowered.
Description
technical field [0001] The invention relates to the technical field of offshore oil development, in particular to an underwater large-scale oil-water replacement storage and unloading device suitable for offshore oil development and an operating method thereof. Background technique [0002] Offshore crude oil storage methods can be divided into dry and wet modes. The dry oil storage system adopts a storage method similar to land oil storage tanks, and the upper space of crude oil is filled with inert protective gas to eliminate the risk of explosion. The wet oil storage structure is always filled with oil and water, and based on the oil-water replacement technology, the oil inflow and water discharge and water inflow and oil outflow operations are realized. Offshore oil storage is an important part of offshore oil development. At present, the oil storage facilities used in the sea mainly include: floating storage and offloading ships, floating production storage and offload...
Claims
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IPC IPC(8): B65D88/78B65D88/54
CPCB65D88/54B65D88/78
Inventor 王晋刘东喜顾洪尤云祥罗勇张益公刘巍巍许鑫
Owner OFFSHORE OIL ENG CO LTD