A device and method for remote, automatic and continuous delivery of fracturing balls

Abstract

The invention discloses a device and a method for remotely and automatically dropping fracturing balls continuously. The device includes a hollow-structure annular guide box, in which a ball pushing column is arranged, and the annular hollow structure includes a space for accommodating fracturing balls, The channel for pushing the ball column and the movement of the fracturing ball; the annular guide box is provided with the entrance of the fracturing ball and the limit ball outlet, and the limit slide block and the ball stopper are set at the limit ball outlet, and the top surface of the limit ball outlet The top surface higher than the limit sliding block gradually decreases from the inside to the outside. The limit sliding block is connected with a drive device that drives it to reciprocate along the axial direction of the annular guide box. The control signal input end of the drive device is connected to the output end of the remote controller. The push ball column includes a driving end and a driven end that are connected to each other. The driven end and the fracturing ball are located in the same channel, which can realize automatic and continuous delivery of the fracturing ball, instead of manual single delivery or automatic non-continuous delivery. Thereby improving the timeliness of the factory zipper operation of the platform well.

Description

technical field [0001] The invention belongs to the field of perforation and well completion, and in particular relates to a device and method for remotely and automatically releasing fracturing balls, in particular to a device and method for automatically and continuously releasing fracturing balls for remote plugging and unplugging connectors at wellheads. Background technique [0002] Large-scale staged fracturing technology is a key technology for the development of low-porosity and low-permeability unconventional oil and gas resources such as shale gas and tight oil and gas, and bridge plug perforation combined with sand fracturing is an important part of it. Bridge plug perforation joint operation refers to the use of cable transmission method to transport the bridge plug and perforation tool string to the downhole target layer through hydraulic pumping under the premise of effective communication between the wellbore and the formation, so as to complete the bridge plug...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention discloses a method for automatically and continuously launching fracturing balls for the remote plugging and unplugging of wellhead connectors, which can realize the automatic and continuous delivery of fracturing balls, replacing manual Single delivery or automatic non-continuous delivery, without manual supply of fracturing balls, thereby improving the timeliness of factory zipper operations on platform wells and avoiding the danger and inefficiency of manual delivery

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