Double-acting sleeve rotating guide shoe

Abstract

The invention relates to a double-acting sleeve rotating guide shoe. The double-acting sleeve rotating guide shoe comprises a body, a flow guide valve plate, a rotor, a mandrel, an outer rotating sleeve and a guide shoe head; the body, the mandrel and the outer rotating sleeve are of a sleeve-shaped structure, a plurality of spirally-distributed rotor blades are arranged on the surface of the rotor, a plurality of through flow guide holes are formed in the flow guide valve plate, the flow guide valve plate is fixedly installed in the body, the two ends of the rotor are fixedly connected with the flow guide valve plate and the mandrel correspondingly, the rotor is installed on the downstream of the flow guide valve plate, and the tail end of the mandrel is fixedly connected with the guide shoe head; the outer wall of the body where the mandrel is located is sleeved with the outer rotating sleeve, a plurality of righting edges distributed spirally are arranged on the outer wall of the outer rotating sleeve, a plurality of inner magnetic strips are installed on the mandrel, a plurality of outer magnetic strips are installed on the outer rotating sleeve, and in the initial state, the inner magnetic strips and the outer magnetic strips which correspond to each other are opposite in magnetism, so that the mandrel rotates to drive the outer rotating sleeve to rotate. According to thedouble-acting sleeve rotating guide shoe, the problem that the sleeve is blocked can be solved, meanwhile, irregular boreholes can be repaired, and the well cementation quality is improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas well cementing and completion, and in particular relates to a double-acting casing rotary guide shoe. Background technique [0002] With the needs of oil field development, highly deviated wells and horizontal wells have become an important trend in the exploration and development of oil and gas fields. Casing resistance is a common technical problem in cementing operations such as horizontal wells and highly deviated wells. Eccentric guide shoes are often used to guide the casing into the bottom of the well. However, due to the influence of irregular well diameter, well wall collapse, and falling blocks, even if the eccentric guide shoe is used, the casing running is often blocked, stuck, or even failed to run, which leads to a significant increase in the construction period and construction cost. . [0003] The existing rotary guide shoe converts the fluid energy into the torque of the gui...

AI Technical Summary

Problems solved by technology

Although it can solve the problem of resistance to a certain extent, the impact of hydraulic force may lead to irregular wellbore, and it is easy to insert into the formation and cause stuck phenomenon when encountering long horizontal section with high friction or formation collapse

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