Bridge type concentric polymer distributor for separate-layer polymer injection well

Abstract

The invention discloses a bridge type concentric polymer distributor, which comprises an upper joint, a connecting sleeve, a positioning table, a regulating sleeve, a main body, a base, a lower joint and a throttle core. The bridge type concentric polymer distributor has the advantages that (1) the regulating sleeve is concentric with a main passage of the polymer distributor; the transmission torque is great; and the butt joint success rate during the testing and allocation is high; (2) the ball number of the throttle core in an eccentric hole of the bridge type concentric polymer distributor is continuous and adjustable, and the testing and allocation data precision is obviously improved; (3) the bridge type concentric polymer distributor can be matched with the existing advanced testing and allocation linkage technology; compared with a conventional steel wire pulling-out dropping-fishing tool, the bridge type concentric polymer distributor has the advantages that the work intensity of workers is low; the single-well testing and allocation period is short; and the work efficiency is high; (4) a bridge type passage is designed in the structure, the inter-layer interference among all layers can be reduced to the maximum degree in the test process; and the actual stratum condition can be really reflected by test data; and (5) the shuttle-shaped throttle core is used in the eccentric hole; and great throttle pressure differences can be realized under the condition of ensuring low viscosity loss.

Description

technical field [0001] The invention relates to the technical field of oil collection, in particular to a bridge-type concentric polymerizer for layered polymer injection wells. Background technique [0002] Copolymerizers are widely used in layered polymer injection wells in major oilfields in my country, and can realize fine injection of polymer in each layer under a water injection pressure system. The eccentric polymerizer widely used at present is an eccentric structure with eccentric holes It is not concentric with the inner diameter. During normal polymer injection, the throttle core in the eccentric hole is adjusted and controlled by steel wire fishing to replace the throttle core in each layer. The success rate of docking is low, and the single well measurement and adjustment cycle is long, labor-intensive. Large, the accuracy of the test deployment data is not high, and the interlayers interfere with each other during the test deployment, which affects the normal pol...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a bridge-type concentric polymerizer for layered polymer injection wells to solve the problems of low butt joint success rate, long test period, high labor intensity and influence on the normal operation of other layers in eccentric polymerizers. Polymerization Technical Problems

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