Technical Introduction:

The line controlled intelligent sliding sleeve system uses two hydraulic control pipelines and one cable to be lowered into the well together with the tool. Each level is lowered into an electronic decoder, which sends instructions from the ground to control the oil circuit of each level of hydraulic control sliding sleeve, and cooperates with ground pressure to control the on/off status of each level of hydraulic control sliding sleeve.

System composition: slide sleeve body, hydraulic control pipeline system, digital decoding control system, hydraulic cylinder piston system, switch lock system.

Characteristics of electronic decoding hydraulic control slide sleeve technology:

The structure is reliable, using two pipeline hydraulic switches with high switch thrust;

Using mechanical metal seals and hydraulic cylinder compensation seals, the sealing pressure is high;

Adopting a dual cylinder structure, the depth of descent is not affected;

The fracturing nozzle design has a large flow area and does not produce impurity accumulation;

Designed an anti erosion inner pipe;

Long lifespan;

Long term bottom hole monitoring.

2. Underground data acquisition system

Technical features:

A flow measurement method based on the law of conservation of energy - Bernoulli equation and flow continuity equation;

The pressure difference sensor and temperature sensor built into the flowmeter monitor the pressure difference and temperature generated in the high-pressure flow hole and low-pressure flow hole. The signal is recognized and read by the microcontroller built into the Venturi flowmeter, and transmitted to the ground through a 1/4 "steel pipe cable;

Built in capacitive moisture meter probe, ground three-phase current calibration;

Underground is not affected by fluid density, viscosity, temperature, or pressure;

Real time monitoring of internal (external) pressure, formation temperature, and real-time flow rate;

There will be no scaling or blockage underground, and the oil and scale in the reservoir and injected water will not be affected;

Large measurement range, high accuracy, small zero drift, etc.

3. Ground control system

Technical features:

It can implement manual and automatic control modes at will;

The flow control valve can achieve n+1 type, 1-P type decoding, and 3-2 decoding control modes;

The displacement control adopts a precise flow control system for feedback control, with a maximum of 20 levels;

L can achieve remote control;

Control power: dual head pneumatic pump;

The control panel adopts a manual and automatic touch screen control.