Anti-settling device, verification method and device thereof and device for preventing sedimentation of well

Abstract

The embodiment of the invention provides an anti-settling device, a verification method and device thereof and a device for preventing sedimentation of a well, and belongs to the field of well drilling. The anti-settling device is arranged in a well opening area of the well during well drilling and used for preventing sedimentation of the well. The anti-settling device includes an anti-settling base and a connection locking device, an opening corresponding to the well opening is formed in the center of the anti-settling base, and the anti-settling base is distributed in the well opening area during well drilling. The connection locking device is arranged on the opening and used for connecting and locking a sleeve arranged in the well with the anti-settling base. The device for preventing sedimentation of the well includes the anti-settling base and the verification method used for the anti-settling base. The anti-settling device, the verification method and device thereof and the device for preventing sedimentation of the well can achieve reduction of pressure intensity of various well drilling devices on the well opening and a tundra under the well opening and further decrease thesedimentation amount of the well to achieve stable well drilling.

Description

technical field [0001] The invention relates to the field of drilling, in particular to an anti-subsidence device, a checking method and device thereof, and a device for preventing well subsidence. Background technique [0002] Since the beginning of the 21st century, with the demand for oil and natural gas rising in a straight line in various countries around the world and the depletion of oil and gas resources in conventional areas, the development of oil and gas resources has gradually developed to the deep sea and polar tundra. In 2009, the U.S. Geological Survey released a report stating that the unproven oil reserves and natural gas reserves in the Arctic accounted for 13% and 30% of the oil and gas reserves in conventional areas, respectively, and the polar regions may become another core area for oil and gas development after the ocean. Petroleum companies in countries such as Russia, Norway, the United States and Canada have all developed a strong interest in polar ...

AI Technical Summary

Problems solved by technology

However, this method is mainly aimed at the problem of wellhead tilt instability caused by seabed sediment erosion and migration in the process of deep-water drilling. It is essentially different and different from the problem of the entire wellhead subsidence caused by the melting of permafrost during drilling in the permafrost zone. applicability

At the same time, this method does not give the calculation method of the key parameters of this device

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