Passive type deep sea heave compensation device for ocean platform drilling

A technology for offshore platforms and compensation devices, which is applied to drilling equipment, drill pipes, and drill pipes. It can solve the problems of drill bit damage, low compensation accuracy, and lag, and achieve fast system response, high compensation efficiency, and good reliability. Effect
CN109098675APending Publication Date: 2018-12-28SOUTHWEST PETROLEUM UNIV +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2018-12-28

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Abstract

The invention discloses a passive type deep sea heave compensation device for ocean platform drilling. A vertically arranged guide slot is formed in a drilling derrick (3); a vertically arranged spring (5) is fixedly arranged at the top of the guide slot; a pressing plate (6) located in the guide slot is fixedly arranged at the bottom of the spring (5); a floating overhead crane (7) is located under the pressing plate (6); and a center grooved wheel (8) provided with multiple wire ducts on the column surface is mounted in the floating overhead crane (7) in a rotatable manner. The heave compensation device disclosed by the invention further comprises a large hook (9), a water isolation pipe (10), a large hook lifting rope (11), a steel wire rope (12) and a displacement compensation mechanism I and a right displacement compensation mechanism II which are respectively arranged on the left and right sides of a stand (2). The displacement compensation mechanism I and the right displacementcompensation mechanism II are symmetrically disposed on the left and right. The passive type deep sea heave compensation device has the beneficial effects of simple structure, capability of verticallydropping down the water isolation pipe, high reliability, high compensation efficiency and high system response speed.
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Description

technical field The invention relates to the technical field of heave compensation devices for marine floating platforms, in particular to a passive deep sea heave compensation device for offshore platform drilling. Background technique With the depletion of land resources, the strategic vision of the world's economic development is focused on the ocean, and the development of marine technology and high-tech equipment is particularly important. In the field of petroleum, with the development of China's economy, especially the rapid development of the petrochemical and automobile industries as the pillar industries, the contradiction of insufficient supply of oil and natural gas has become increasingly prominent. In view of the depletion of onshore oil resources, marching into the deep sea has become an inevitable trend. At present, the maximum working water depth of offshore oil drilling rigs has exceeded 3000m, and will continue to develop in a deeper direction. Working i...

Claims

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