Oil pipe butt joint packer

Abstract

The invention provides an oil pipe butt joint packer, and relates to the technical field of oil exploitation. The oil pipe butt joint packer comprises an oil pipe joint and a packer body; the oil pipe joint comprises a first end and a second end which are opposite to each other and are used for connecting an upper butt joint oil pipe and the packer body correspondingly; the packer body comprises a mandrel, a long pressing cap and a guiding shoe, wherein the mandrel comprises a first end and a second end which are opposite to each other, and two bosses which are distributed in the circumferential direction and extend in the axial direction are arranged at the position, close to the first end, of the outer circumferential face of the core shaft and used for pressing the upper end face of a lower butt joint oil pipe; the long pressing cap is connected to the first end of the mandrel; the guide shoe is connected to the second end of the mandrel; and a pressing cylinder, an opening pressing sleeve, a spacer bush, an upper auxiliary rubber cylinder, an upper spacer ring, a sealing rubber cylinder, a lower spacer ring and a lower auxiliary rubber cylinder are sequentially sleeved outside the mandrel from the long pressing cap to the guide shoe.

Description

technical field [0001] The present application relates to the technical field of oil exploitation, in particular to an oil pipe butt packer. Background technique [0002] In the process of horizontal well open-sealing segmental reformation, sometimes the suspension packer fails, causing the stimulation operation to be unable to proceed normally, and the failed suspension packer needs to be milled and salvaged. Afterwards, the hanging packer needs to be lowered again. At present, most of the oil pipes and sleeves of the hanging packer are directly connected with the oil pipes that need to be connected; The annular space of the technical casing at the lower part of the device needs to withstand the high pressure connected with the oil pipe, which may easily cause damage to the technical casing. Contents of the invention [0003] The purpose of the embodiments of the present application is to provide a packer for butt joint of oil pipes, so as to realize the sealing of the j...

AI Technical Summary

Problems solved by technology

[0002] In the process of open-sealed and segmented reconstruction of horizontal wells, sometimes the suspension packer fails, causing the stimulation operation to fail to proceed normally. The failed suspension packer needs to be milled and salvaged. Afterwards, the hanging packer needs to be lowered again. At present, most of the oil pipes and sleeves of the hanging packer are directly connected with the oil pipes that need to be connected; The annular space of the technical casing at the lower part of the device needs to withstand the high pressure connected with the oil pipe, which may easily cause damage to the technical casing

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