Split type concentric water distributor suitable for scaling well and separate injection process

Abstract

The invention relates to a split type concentric water distributor suitable for a scaling well and a separate injection process. The split type concentric water distributor comprises a working cylinder, a core body and an adjusting mechanism; the adjusting mechanism comprises a motor, a motor base with four water passing holes in the circumferential direction, a hollow shaft, a screw rod, a transmission block, an adjusting cylinder, an adjusting arm and a thrust block, wherein the motor is mounted on the motor base, and the motor base is mounted on the upper part of the inner cavity of the core body; and the two ends of the hollow shaft are respectively connected with an output shaft and a lead screw of the motor, the transmission block is in threaded connection with the lead screw, and the side surface of the thrust block is tightly attached to the inner wall of the adjusting cylinder. The split type concentric water distributor overcomes the defects that an integrated water injectionwater distributor needs to remove an oil pipe and replace the working cylinder and the working efficiency is low; a core and the adjusting cylinder can be put into the water distributor once, and then the adjusting cylinder is rotated through a steel wire suspension adjusting mechanism, so that the opening degree of a water nozzle is adjusted, the two layers of water injection operation can be completed after placing once, the operation efficiency can be greatly improved, and the water injection cost is reduced.

Description

technical field [0001] The invention relates to a water injection tool and technology for oil fields, in particular to a split-type concentric water distributor and a separate injection technology suitable for scaled wells. Background technique [0002] As the oil field development enters a high water cut period, the number of water injection wells gradually increases, and the workload of deployment and testing also gradually increases. At present, the integrated concentric water distributor has been widely used in domestic oil fields. The water distributor combined with the downhole measuring and adjusting instrument can realize fine water injection, and can meet the requirements of stratification and water injection. However, in order to achieve intelligent injection while measuring and adjusting, the integrated concentric water distributor needs to pull out the oil pipe, remove the working cylinder connected to the oil pipe downhole and replace it with a water distributor...

AI Technical Summary

Problems solved by technology

However, in order to achieve intelligent injection while measuring and adjusting, the integrated concentric water distributor needs to pull out the oil pipe, remove the working cylinder connected to the oil pipe downhole and replace it with a water distributor, and then lower the oil pipe. The operation is cumbersome and costly. It is also relatively high; on the other hand, the adjustment claw of the integrated concentric water distributor needs to be slotted on the adjustment cylinder, but the downhole scale is very easy to block the adjustment claw hole, resulting in the inability to adjust the opening of the water nozzle, so a split type is urgently needed The water distributor can adjust the opening of the water nozzles of the two oil layers in one trip without replacing the existing working cylinder, so that the oil pipe does not need to be pulled out, thereby reducing the operating cost

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