An all-metal soluble fracturing segmenter

Abstract

The invention discloses an all-metal soluble fracturing sectionalizer, which relates to the technical field of oil drilling, and comprises a pull rod, a cone, a sealing system, an anchoring system, a push-pull ring, an anti-collision ring and a lock ring, the cone The body, lock ring and anti-collision ring are set on the handle bar from front to back in sequence, the anchor system and the push-pull ring are set on the lock ring from front to back, and the front side of the handle bar is provided with an upper handle mechanism, the upper throwing mechanism includes a push cylinder, an adapter and a connection system, the adapter is installed inside the push cylinder and connected with the handle rod through the connection system, the rear end of the push cylinder abuts on the cone, the adapter and the throwing Anti-blocking passages that can communicate with each other are arranged in the axial direction of the pull rods, and a fluid passage that communicates with the anti-blocking passages and allows fluid to pass is opened on the side of the adapter; , the front-end throwing structure and the anti-blocking channel, even if the throwing is unsuccessful, there are still advantages of the over-current channel.

Description

technical field [0001] The present invention relates to the technical field of oil drilling, and more specifically relates to the technical field of an all-metal soluble fracturing segmenter. Background technique [0002] The all-metal soluble fracturing segment is a kind of bridge plug or ball seat. In the field of oil and gas industry, the bridge plug / ball seat is often used to isolate the fracturing layer to implement large-scale fracturing stimulation operations. Especially in tight oil and gas wells, bridge plug seals are widely used because of their simple and compact structure and accurate sealing layers. In recent years, the use of soluble bridge plugs for fracturing stimulation operations has gradually been widely used. Dissolvable bridge plugs have the characteristics of self-dissolving, complete well opening, and no need for secondary manual intervention, which is beneficial to later production and workover operations. [0003] Three patents related to bridge pl...

AI Technical Summary

Problems solved by technology

[0004] The above three patents have the following defects: 1) the above bridge plugs or ball seats are all dropped from the lower end, and the pull rod is a solid structure. The problem of the central channel of the seat made it impossible for the liquid to be pumped into the wellbore, resulting in the inability to quickly deal with the accident; 2) During the lifting or lowering of the above bridge plug or ball seat, the solid tie rod that was lost also fell into the wellbore, and there was also a blockage Central channel risk; 3) None of them are suitable for upturned wells (the wellbore is inclined upward). When the wellbore is an upturned well, it needs to be set with displacement, and the pumped liquid needs to bear against the bridge plug or ball seat without sliding down, and then For starting and setting, since the handle rod of the existing bridge plug or ball seat is a solid mechanism, there is no design with displacement, and it cannot meet the design requirements of the upturned well for dissolvable ball seats; 4) The above bridge plugs or ball seats There is also the problem that it is not easy to disassemble and assemble; 5) The above bridge plugs or ball seats have interference problems, resulting in poor sealing and unable to effectively seal the production layer

That is, the slips are anchored in the casing, but the sealing system is not in place, resulting in poor sealing; or the sealing system is in place, but the slips are not anchored well, causing the bridge plug / ball seat to slip and cannot be constructed normally

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