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Hydraulic intelligent well completion system

An intelligent well completion and hydraulic technology, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc., can solve the problems of cable control reliability and downhole life instability, and achieve reliability and service life problem, minimization of interval control, and the effect of solving the limitation on the number of intervals

Inactive Publication Date: 2019-01-25
天津波普能源技术有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, due to the limitations of the use environment and technical level, the reliability and downhole life of cable control are still unstable, and there are still many problems to be solved

Method used

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  • Hydraulic intelligent well completion system

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Embodiment Construction

[0022] The present invention will be further technically described below with reference to the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, a hydraulic intelligent well completion system, in which the wellhead is provided with a penetrating sealer; the system includes downhole tools, pipelines and cables, and a ground control system 7; the upper part of the downhole tool is provided with a downhole Safety valve 1 and circulating sliding sleeve 2; the lower part of the downhole tool is a multi-layer structure, and each layer includes a multi-stage flow control valve 14, a decoder 13, a detector 12, and an isolation seal assembly 15. Each layer The top and bottom of the section are provided with packers; the pipeline cables include hydraulic control pipelines 9 and armored data cables 10; the multi-stage flow control valve 14 is controlled by two hydraulic control pipelines 9 Metal-sealed sliding sleeve system, each gear of the multi-stage flow con...

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Abstract

The invention discloses a hydraulic intelligent well completion system which comprises a downhole tool, a pipeline cable and a ground control system. The lower portion of the downhole tool is multi-section structure, each section comprises a multistage flow control valve, a decoder, a detector and an isolation sealing assembly, the pipeline cable comprises a hydraulic pipeline and an armored datacable, a pressure sensor, a temperature sensor and a flow sensor are arranged in the detector, the isolation sealing assembly and a positioning sealing assembly are in close fit with a packer at eachsection and a sealing barrel to realize inter-section packing, and the pipeline cable traverses the positioning sealing assembly and the isolation sealing assembly to be connected with the downhole tool. By the system, the problem that existing conventional layered water injection processes are low in testing-adjusting efficiency and accuracy and high in subsequent operation cost is solved, the problem in reliability and service life of intelligent well completion of existing cabled control is solved, and the problem of limitation on section number of common hydraulic-control intelligent wellcompletion is solved.

Description

technical field [0001] The invention relates to a well completion system, in particular to a hydraulic intelligent well completion system. Background technique [0002] Layered water injection is to lower the layer packer in the water injection well to separate each layer. According to the water injection demand of each layer, the injection amount is controlled separately, so as to avoid the phenomenon of water intrusion in some layers, realize uniform advancement, and increase the water injection rate. The development effect of flooding oil field. [0003] From the current point of view, the water injection process still has extensive management, which is mainly manifested in the control and measurement and adjustment of the water injection volume in the layer. The conventional method is to repeatedly fish layer by layer, store and replay the test data. Taking the 4-layer section as an example, the single measurement and adjustment time is about 3-4 days. After determining...

Claims

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Application Information

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IPC IPC(8): E21B43/20E21B43/14
CPCE21B43/20E21B43/14
Inventor 刘波
Owner 天津波普能源技术有限公司
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