Multi-stage self-sequencing liquid-controlled fracturing ball throwing device

Abstract

The invention relates to a multi-stage self-sequencing liquid-controlled fracturing ball throwing device. The device includes a cover plate, a base, a seal cover, a rotary disk and a motor. The cover plate and the base are internally provided with conductive circuits, small fracturing balls are put in from the top, the weight of the balls are tested through a gravity sensor, a second hydraulic push mechanism pushes the balls to a ball delivery channel, the balls are sequentially located at the position of a baffle arranged in the radial direction of the rotary disk and located on the upper portion of a ball-throwing guide channel, according to the weight of the small fracturing balls, sequencing is conducted through the recursive algorithm, according to the sequence, the rotation angle of the motor is controlled so as to make the ball-throwing guide channel coincided with the axis of a ball throwing channel, and the small fracturing balls are pushed to the ball throwing channel through a first hydraulic push mechanism and enter a fracturing channel under the combined action of the high-pressure fluid negative pressure effect and the self gravity. According to the device, the several small fracturing balls can be automatically and sequentially thrown after being loaded at a time, the single-well multi-section continuous fracturing construction is effectively ensured, the safety risk of fracturing construction is reduced, and great engineering and economic benefits are generated.

Description

technical field [0001] The invention relates to a fracturing stimulation tool in the field of oil and gas field development, in particular to a multi-stage self-sorting hydraulically controlled fracturing ball device. Background technique [0002] Worldwide, more and more oil and gas fields that have entered the middle and late stages of development and newly developed oil and gas fields use fracturing technology for reservoir stimulation. The fracturing pitching device is the key equipment for fracturing construction, mainly including two types of manual pitching and hydraulic control pitching. The hydraulic control means opens the ball valve to realize the fracturing ball. [0003] However, there are still many deficiencies in the conventional fracturing pitching device at present. On the one hand, the use of conventional manual ball-dropping devices will expose operators to high-pressure areas on the well site, and the risk to personnel safety is extremely high. On the...

AI Technical Summary

Problems solved by technology

On the one hand, the use of conventional manual pitching devices will expose operators to high-pressure areas on the well site, and the risk to personnel safety is extremely high

On the other hand, if the conventional hydraulic control ball delivery device is used, if it is a single-stage hydraulic control ball delivery device, only one fracturing ball can be installed at a time, which cannot guarantee the multi-stage continuous fracturing operation of a single well; if it is a multi-stage hydraulic control ball delivery device, it can be installed at one time. Multiple fracturing balls can guarantee the continuous fracturing operation of multiple stages in a single well, but manual sorting is required in the ball loading stage. Once a manual sorting error occurs, the fracturing layer will be lost, resulting in engineering accidents and great economic losses

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