Anchoring-type hydraulic casing shaping tool

Abstract

The invention discloses an anchoring-type hydraulic casing shaping tool. The upper end of the anchoring-type hydraulic casing shaping tool is connected with an oil pipe through a pipe thread. When theanchoring-type hydraulic casing shaping tool is tripped in and encounters resistance, pressurization is conducted through a ground pump truck, high-pressure liquid enters the anchoring-type hydrauliccasing shaping tool through the oil pipe and flows through first liquid inlet channels in the lower ends of anchor jaws, anchor jaw compression reset springs expand outwards under the effect of the pressure to be anchored on the inner wall of a casing, a supporting rod moves downwards to compress a shaping spring, and a baffle ring has a protection function; the supporting rod continues to move downwards, and balls expand downwards under the effect of shaping grooves in the outer wall of the supporting rod; when a shaping shaft and a lower guide sleeve pass through a shaping position, the pressure of the oil pipe is released, the anchor jaws retreat under the effect of the reset springs, the supporting rod moves upwards, and the balls enter the shaping grooves again; and a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring, a fifth sealing ring, a sixth sealing ring, a seventh sealing ring, an eighth sealing ring, a ninth sealing ring and a tenth sealing ring are arranged.

Description

technical field [0001] The invention relates to an oil field mechanical equipment, in particular to an anchor type hydraulic casing shaping tool. Background technique [0002] In the process of oil and gas development, oil and gas wells are caused by stratum dislocation and subsidence due to long-term stratum exploitation, resulting in the distortion and deformation of the oil layer casing, making the follow-up exploitation work impossible, and even causing the scrapping of oil and gas wells, causing serious economic losses. Therefore, it is necessary to reshape the casing. The traditional method of overhauling the reshaping method has high operating costs and a long construction period, which brings inconvenience to production and construction. [0003] The existing casing shaping tools have the following problems: 1. The mechanical shaping tools need to be pressurized and rotated, and the drilling pressure and torque applied by the minor repair equipment are limited, which...

AI Technical Summary

Problems solved by technology

[0002] In the process of oil and gas development, oil and gas wells are caused by stratum dislocation and subsidence due to long-term stratum exploitation, resulting in distortion and deformation of oil layer casing, making subsequent exploitation work impossible, and even causing oil and gas wells to be scrapped, resulting in serious economic losses

Therefore, it is necessary to reshape the casing. The traditional method of overhauling the reshaping method has high operating costs and a long construction period, which brings inconvenience to production and construction.

[0003] The existing casing shaping tools have the following problems: 1. The mechanical shaping tools need to be pressurized and rotated, and the drilling pressure and torque applied by the minor repair equipment are limited, which cannot meet the process requirements; 2. The mechanical shaping tools produce large torques, and the power motor The power is relatively small, which cannot meet the shaping requirements; 3. The force and shock force are large, and the effect of casing shaping cannot be guaranteed

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