Three-leg simple wellhead platform suitable for hundred-meter water depth

Abstract

The three-leg simple wellhead platform comprises an upper module, a jacket, a pile foundation and a drill conductor, the jacket is of an upper structure with a compact section, the upper structure is located in a wave and high-flow-speed ocean current acting area, and the wave and current force borne by the jacket can be effectively reduced; and the base plate is transited to a large-section lower structure through a transition structure, so that the enough large base plate size is provided to ensure the stability of the platform and reduce the stress of the pile foundation, and the base plate can adapt to severe environment conditions of open sea areas with the water depth of 100 meters. Meanwhile, the upper module is mainly provided with an oil-gas metering facility, a chemical agent system, an opening and closing exhaust system, an electrical room and a helicopter deck, drilling and repairing machines and tools, living buildings, oil-gas-water treatment facilities, public water facilities, a main power source, an emergency power source system and the like are not arranged, and system facilities on the upper portion of the platform are greatly simplified; and unmanned operation of the platform can be realized, and the investment and operation cost of the platform can be greatly saved.

Description

technical field [0001] The invention relates to a three-legged simple wellhead platform suitable for a water depth of 100 meters, belonging to the technical field of marine engineering and oil and gas development. Background technique [0002] The large-scale development of marginal oil fields is an effective supplement to increase the reserves and production of offshore oil and gas in my country. There are a large number of marginal oil and gas fields to be developed in the depths of 100 meters offshore in my country, but the reserves of marginal oil and gas fields are generally small, and the oil reservoir is complex and the development uncertainty is large, so it is not suitable for excessive investment. [0003] At present, four-leg unmanned wellhead platforms are usually used for the development of marginal oil and gas fields with water depths of 100 meters. Under this background, break through the conventional four-leg unmanned wellhead platform development model, and...

AI Technical Summary

Problems solved by technology

There are a large number of marginal oil and gas fields to be developed at a depth of 100 meters offshore in my country, but the reserves of marginal oil and gas fields are generally small, and the reservoirs are complex, and the development uncertainty is large, so it is not suitable for excessive investment

[0003] At present, the development of marginal oil and gas fields with a water depth of 100 meters usually uses a four-legged unmanned wellhead platform. The platform investment can account for more than two-thirds of the entire project investment. Excessive platform investment is a key factor restricting the development of marginal oil and gas fields.

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