Adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed

Abstract

The invention discloses an adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed, and relates to the technical field of oil fields, in particular to a water division plug of a packing water distributor in the field of oil field separated layer water injection, namely, a water division tool for simultaneous measurement and allocation on water amounts of two layers. The adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed comprises a fishing head, an upper outer shell, a middle outer shell, a lower outer shell and a lower connector, wherein the fishing head, the upper outer shell, the middle outer shell, the lower outer shell and the lower connector are mutually and sequentially connected in the axial direction. An upper water outlet is formed in the side wall of the upper outer shell, an upper water inlet is formed in the side wall of the middle outer shell, a lower water outlet is formed in the side wall of the lower outer shell, and a lower water inlet is formed in the lower connector. The adjustable plug capable of simultaneously controlling one water nozzle to be opened and the other closed can solve the problem of water distribution difficultly caused by large difference of water absorbing capacities of two adjacent oil layers and the problems of allocation difficulty of the water volumes of multiple injection allocation equant layers and the like.

Description

technical field [0001] The invention relates to the field of oilfield technology, in particular to a water distribution plug for sealing off water distributors in the field of layered water injection in oilfields, especially a water distribution tool for synchronous measurement and adjustment of two-layer water volume. Background technique [0002] The newly developed two-layer plugs of the eccentric integrated pack-off water distributors in various oil fields have two built-in faucets. The size of the faucets is fixed. When replacing them, they need to be pulled out from the well and put in again. The workload is heavy; For the storage type flowmeter, the data needs to be played back on the ground. According to the test situation, the two-layer plug needs to be thrown and fished multiple times. With the increase of the number of layers, the measurement and adjustment cycle is prolonged, and the production cost and labor intensity are increased. [0003] Commonly used single...

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Problems solved by technology

[0002] The newly developed two-layer plugs of the eccentric integrated pack-off water distributors in various oil fields have two built-in faucets. The size of the faucets is fixed. When replacing them, they need to be pulled out from the well and put in again. The workload is heavy; For storage type flowmeter, the data needs to be played back on the ground. According to the test situation, the two-layer plug needs to be thrown and fished multiple times. With the increase of the number of layers, the measurement and adjustment cycle is prolonged, and the production cost and labor intensity are increased.

[0003] Commonly used single-layer flow-adjustable plugs for oilfield stratified water injection: ①Polymer flooding and water-flooding electric adjustable nozzles (patent number 201220147780.9), ②Single-open screw-in adjustable plugging devices (patent number 200920216267.9); the two patents only realize The flow measurement and adjustment of the single-layer plug is carried out, and the flow measurement and adjustment of the two-layer plug is not involved.

[0004] The existing intelligent measurement and adjustment technology: the intelligent synchronous measurement and adjustment method while measuring and adjusting while injecting (Patent No. 200910013016.5) has the main problems: ① The cost is extremely high, and each water distribution system in the underground Each device needs an intelligent measuring and adjusting instrument, and the more layers, the more testing instruments; ②The workload is heavy and the reliability is low. Open two actions; ③The test accuracy is low, and there are errors existing in multiple intelligent measuring and adjusting instruments; Complete a layer of testing

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