A drilling fluid stirring well tool

Abstract

The invention relates to a well drilling fluid mixing and drifting tool, and belongs to the field of well drilling and logging in petroleum and natural gas industries. According to the well drilling fluid mixing and drifting tool, a logging instrument is effectively trapped into the downhole, and drifting operation is effectively completed. According to the technical scheme of the well drilling fluid mixing and drifting tool, a cable core at one end of a cable is connected with an electromagnet and a motor in a conducting mode, and a cable core at the other end of the cable is connected with aground electronic control platform in a conducting mode; the middle of the outer circle of a locking connector is in screw thread connection with the lower portion of an inner cavity of a locking nut, and the lower portion of the outer circle of the locking connector is in screw thread connection with the upper portion of an inner hole of a connecting head; the electromagnet is mounted on the upper portion of an inner cavity of an electromagnet sealing seat; an anchor jaw and an anchoring spring are overall arranged in a radial through hole in a centering wing of an anchor body; the upper endof an input magnetic tile seat and an output shaft of the motor are fixed through a transmission pin, the lower end of an inner cavity of an output magnetic tile seat is in screw thread connection with the upper end of the outer circle of a centering cylinder, and the upper end of a mixing head is in screw thread connection with the lower end of a transmission shaft. According to the well drilling fluid mixing and drifting tool, viscous well drilling fluid is electrically mixed, and thus the drifting effect is effectively achieved; and a magnetic driving technology is adopted, the motor and the electromagnet are sealed in a static sealing mode, and thus sealing is safe and reliable.

Description

technical field [0001] The invention relates to a drilling fluid stirring well tool used in the fields of drilling and logging in the petroleum and natural gas industry. Background technique [0002] In the development process of the oil and gas industry, the drilling engineering technology is difficult, the economic investment is large, and the construction is complicated, which is an extremely important link in the process of oil and gas reservoir development. During the drilling and completion process, it is necessary to use a large number of logging instruments to detect the downhole conditions. Usually, the logging instruments are lowered by the cable to the downhole working position by gravity. This requires that the logging instruments and cables can pass through the drilling fluid in the casing smoothly. . However, due to particle settlement, formation temperature, and especially the condensation and heat release of cement slurry during well completion, the drilling...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problem of effectively lowering the logging instrument downhole and effectively completing the well drilling operation, a drilling fluid stirring well drilling tool is specially provided.

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