Technical Principles

By connecting multiple intelligent measurement and adjustment workbarrels with cables underground through a single core cable, bidirectional signal transmission and underground power supply are achieved. The flow rate, temperature, pressure inside the pipe, and formation pressure of each underground layer are monitored in real-time on the ground, and the flow rate of each layer can be adjusted in real-time according to the requirements of the oil reservoir, achieving fine layered injection and production.

Technical Characteristics

Can be applied to highly-deviated wells and horizontal wells;

Long term real-time monitoring of parameters such as pressure, temperature, flow rate, and watercut in various underground layers;

Real time adjustment of underground flow rate on the ground;

Remote intelligent control, remote data transmission;

Efficient and automated testing, with high testing efficiency and accuracy.

Core Tools

After years of research and development, we have developed four types of intelligent cable measurement and adjustment working cylinders of various sizes that can fullfill various needs, as well as more than 10 types of matching tools of different sizes. According to different flow testing methods, pressure difference type intelligent cable measurement and adjustment working cylinder, ultrasonic type intelligent cable measurement and adjustment working cylinder, and electromagnetic type intelligent cable measurement and adjustment working cylinder are formed; In order to meet the requirements of large displacement injection and production as well as the requirements of well repair diameter, we have developed China’s first intelligent cable measurement and adjustment working cylinder based on a hollow torque motor .

Technical specifications of core tools

Technical Principles

The surface control system controls the intelligent measurement and adjustment of the opening of the underground hydraulic control working cylinder through multiple underground hydraulic control pipelines, achieving real-time regulation of the flow rate of each underground layer on the ground; Optional downhole measurement tools are available for online monitoring of parameters such as flow, pressure, and temperature.

Technical Characteristics

Can be applied to highly deviated wells, horizontal wells, and deep wells;

Good high-temperature resistance, meeting the needs of large displacement injection and production;

The surface hydraulic control regulation method has strong adaptability to complex fluid environments underground;

The control signal can be transmitted remotely, suitable for scenarios such as unmanned platforms and underwater wellhead.

Core Tools

Through continuous improvement and improvement, the hydraulic control intelligent layered injection and production technology has now formed three sizes of hydraulic control intelligent measurement and adjustment workbarrels and three kinds of downhole measuring tools, equipped with a series of supporting tools such as cable-through packer, cable-through hydraulic anchors, and cable protectors.

Technical specifications of core tools

Technical Principles

The cableless intelligent layered injection and production technology does not require the use of cables or hydraulic control pipelines. The signal is transmitted through pressure carriers to control and adjust the opening of the cableless intelligent measurement and adjustment work cylinder in each underground layer, thereby achieving ground control of the flow rate in each underground layer. At the same time, reservoir data such as underground pressure, temperature, and flow rate can be uploaded to the ground through pressure carriers to guide ground control.

Technical Characteristics

Can be applied highly-deviated wells, horizontal wells, and slim hole wells;

The pipe column structure is simple for safe construction;

Sending control commands on the ground to effectively change the injection volume of each underground layer;

The ground can be preset with a measurement and adjustment cylinder switch system to improve working efficiency.

Core Tools

After years of product research and development and upgrading, three types of measurement and adjustment work cylinder have been formed based on pressure carrier signal transmission: cableless intelligent bidirectional, cableless intelligent unidirectional, and cableless casting and fishing. According to different wellbore size requirements, the product series has been diversified, covering four wellbore specifications in offshore oil fields, and meeting the needs of different wellbore layered injection and production.

Technical specifications of core tools

无缆智能测调工作筒Technical specifications of core tools

Technical Principles

The multifunctional test and adjustment integrated layered water injection technology is connected to the test and adjustment instrument through cable operation. After the test and adjustment instrument is connected to the built-in water nozzle of the water distributor, the flow rate is tested and adjusted using a method of testing while adjusting. Monitor the flow pressure curve through ground instruments and adjust the water nozzle opening of the water distributor in real-time until the injection flow rate is reached.The test and adjustment of all layers can be completed with one trip of the logging instrument into the well.

Technical Characteristics

Reverse circulation well flushing without moving the string;

The water distributor adopts a one-way design to prevent backflow after injection is halted;

The water distributor is designed as a whole with bridge channels, stepless adjustable water nozzles, and independent pressure test structures. It has a large single-layer water injection volume, high allocation accuracy, and can achieve continuous injection of single-layer static pressure test;

Integrated design of testing and sealing instruments, completing testing, sealing, and pressure testing in one cable operation, with direct ground reading and real-time testing of test data, resulting in short deployment time and high efficiency;

The pipe column adopts safety design such as balanced stress, built-in sand settling pocket, and preventing early sealing;

Meet the requirements of post acidification, PLT testing, and static pressure testing.

Core Tools

The multifunctional test and adjustment integrated layered water injection technology has been continuously improved, and innovation has developed a test-retest linkage hierarchical water injection tool with the characteristics of no need for salvage, test and adjustment, large output, high precision, measurable static pressure, anti-reflux, and anti sand injection, and an integrated test-retest tool, which greatly improves the measurement efficiency and the layer compliance rate, and has now reached the international advanced level.

Technical specifications of core tools

多功能测调一体配水器Technical specifications of core tools