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Velocity String
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Overview

CT production and gas production technology (velocity string technology) refers to the installation of a small diameter of CT in the wellbore as a drainage pipe string to improve the gas well carrying capacity.The basic principle is that the fluid velocity on the smaller cross-section is increased by the principle of fluid dynamics of the variable diameter pipe without moving the original downhole production string. Anton has a mature oil production and gas production special CT and other independent supporting tools, providing CT production and gas production technical services and customized oil production and gas production CT and supporting products.

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Compared with traditional non-pressure downhole tubing, the construction is easier, more efficient and economical.


According to well condition, various forms of suspension can be realized, and the operation is safe and reliable.


Optimized string size without additional downhole throttling or surface heating.It is convenient for the later management of Party A to have down-entry and recovery work under the condition of no well-killing.


Adjustable working system, long repair-free period, no need for special equipment and power device except for preferred string.
Suitable for gas wells with certain self-spraying capability but without flooding.


Multiple suspension solutions available.


Optimal string selection and drainage design.


1.25",1.5",1.75",2",2.375",2.875" full series of CT, downhole supporting tools, wellhead supporting equipment.
The technology has been successfully implemented in more than 200 wells in many regions at home and abroad (covering shale gas, dense gas, coal-bed gas, conventional natural gas reservoirs).
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The technology is based on Coiled Tubing dragging working string to isolate the bottom zone in one single trip. Then use abrasive perforating to create contact with formation and continuous fracturing stage by stage. Anton provides advanced Coiled Tubing operation, special designed abrasive perforation tools and bottom packer string, achieving a perfect combination of Coiled Tubing and operation string.
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Downhole valve/sliding sleeve manipulation
The Coiled Tubing takes bottom packer string to isolate the un-targeted zone and open the pre-set sliding sleeve for fracturing. This technology can fracture multiple zones in one single trip. Anton provides advanced Coiled Tubing operation, specially designed for sliding sleeve and bottom packer working string as a perfect combination of continuous working and completion tools.
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Through-tubing Inflatable Packers
The stage acidizing technology of CT through tubing packer is a special stage acidizing technology. Through CT operation, it can seal the casing/tail tube after passing through the tubing, separate the upper and lower layers, realize the stage acidizing operation of the tubing, solve the problem of modification under the condition of wellbore limitation. and greatly improve the single well output.
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CT Tool Conveyance
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CT Conventional Operation
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