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A bridge-type concentric polymerizer for layered polymer injection wells

A polymerizer and bridge-type technology, applied in wellbore/well components, production fluid, earthwork drilling and production, etc., can solve problems affecting normal polymer injection in other layers, low docking success rate, long test period, etc., to achieve High docking success rate, short test and adjustment cycle, and high work efficiency

Active Publication Date: 2018-03-09
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • A bridge-type concentric polymerizer for layered polymer injection wells
  • A bridge-type concentric polymerizer for layered polymer injection wells
  • A bridge-type concentric polymerizer for layered polymer injection wells

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Embodiment Construction

[0029] 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. Injection technical problems.

[0030] An embodiment of the present invention provides a bridge-type concentric aggregator, including:

[0031] upper connector;

[0032] The connecting sleeve is connected with the upper joint;

[0033] The positioning platform is set in the connecting sleeve and pressed by the upper joint. The end of the positioning platform close to the upper joint is provided with a positioning groove and a bypass groove. The annular space formed by the positioning platform and the connecting sleeve is a side groove;

[0034] The adjustment sleeve is arranged in the positioning platform and connected with the positioning platform. The end of the adjustment sl...

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Abstract

The invention discloses a bridge-type concentric coordinating device, which comprises: an upper joint; a connecting sleeve; a positioning platform; an adjusting sleeve; a main body; a base; a lower joint; and a throttling core. The advantages of the present invention are: (1) the adjustment sleeve is concentric with the main channel of the polymerizer, the transmission torque is large, and the butt joint success rate is high during the test deployment; (2) the number of throttle core balls in the eccentric hole of the bridge-type concentric polymerizer is continuous It can be adjusted, and the accuracy of test and adjustment data is significantly improved; (3) It can be matched with the current advanced measurement and adjustment linkage technology. Compared with conventional steel wire lifting and fishing, the labor intensity of workers is low, the single well measurement and adjustment cycle is short, and the work efficiency is high. ;(4) The bridge channel is designed in the structure, which can minimize the interlayer interference between layers during the test, and the test data can more truly reflect the actual situation of the formation; (5) The eccentric hole adopts the shuttle joint The flow core can achieve a large throttling pressure difference 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22
Inventor 宋祖厂赖学明盖旭波刘扬
Owner PETROCHINA CO LTD
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