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Deepwater drilling production vertical oil storage platform and operating method thereof

A deep-water drilling and vertical technology, which is applied in earthwork drilling, wellbore/well parts, mining fluids, etc., can solve the problems of expensive deep-water export pipelines and far away from the coast, and achieve the effects of saving costs and preventing environmental pollution

Active Publication Date: 2014-07-09
CHINA NAT OFFSHORE OIL CORP +2
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  • Abstract
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  • Claims
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Problems solved by technology

However, deepwater export pipelines are usually very expensive because deepwater offshore oil fields are usually very far from the coast

Method used

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  • Deepwater drilling production vertical oil storage platform and operating method thereof
  • Deepwater drilling production vertical oil storage platform and operating method thereof
  • Deepwater drilling production vertical oil storage platform and operating method thereof

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Embodiment Construction

[0026] The drawing illustrations are intended to fit only a selected few styles, not all possibilities, and are not intended to limit the scope of the present disclosure. The present invention will be better understood in conjunction with the accompanying drawings.

[0027] Before explaining the details of the present invention, it needs to be declared that the present invention is not limited to the selected contents, and it can have other various forms or forms.

[0028] It needs to be reiterated that the vertical oil storage system and method can be applied in any body of water. The term "oil" may include crude oil and other hydrocarbon oils. "Water" may include seawater and freshwater.

[0029] The invention is a vertical oil storage system, which uses the oil-water replacement method to store and unload oil, but does not directly discharge oily sewage into the sea.

[0030] Figure 3AShown is a vertical oil storage system 300 used on a deep-draft vertical column float...

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Abstract

The present invention provides a deepwater drilling production vertical oil storage platform and an operating method thereof, wherein the vertical oil storage platform comprises a vertical oil storage cabin for storing oil through an oil-water replacement method, an oil caisson connected to a top of the oil storage cabin, a water caisson connected to a bottom of the oil storage cabin, an isolation pad arranged between an oil-water interface of the oil storage cabin and capable of freely floating along with an oil-water interface layer, a water pipeline extending from a water collecting tank at a top of a center well of the platform to the water caisson at the bottom of the platform, a water channel extending to a water outlet at a lower end of the water caisson at the bottom of the platform along the center well, and an oil-conveying pipe extending from an upper facility of the platform to the oil caisson. The present invention also provides an oil-water replacement and oil-water separation method and process of an oil storage process of the vertical oil storage platform, wherein the method comprises the steps of discharging the water obtained by the oil-water replacement from the water caisson to the water collecting tank at the top of the center well through the water pipeline to perform oil-water secondary separation, then enabling the water to pass through the center well and the water channel to reach the water outlet at the bottom of the platform, and discharging the water into the sea.

Description

technical field [0001] The present invention relates to the oil storage system in offshore oil drilling and production facilities, in particular to a vertical oil storage platform for deep water drilling and production and its operating method. Oily sewage from oil replacement is directly discharged into seawater. Background technique [0002] figure 1 and Figure 2A Front and perspective views of a conventional classic deep draft post platform 100 are shown. Figure 2A The medium-deep draft rig 100 includes a topside 202 and a hull 204 for offshore oil drilling and production. Topsides 202 are located above waterline 200 . The hull 204 is located below the topsides 202 and is typically 650 to 750 feet long and 90 to 160 feet in diameter, floating upright on the water with the hull mostly submerged in seawater. The design draft of the hull 204 is typically 600 to 700 feet, depending on the local marine environmental conditions that the deep draft column platform 100 ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01B63B35/44
Inventor 王晋李志刚罗勇张艳芳
Owner CHINA NAT OFFSHORE OIL CORP
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