Product Name
Digital Water Distributor
Model Specifications
OIL-PS-114-PPD-I; OIL-PS-92-PPD-I; OIL-PS-81-PPD-I
Product Overview
Aoyier’s automatic water-injection solution is patented technology developed by Beijing Aoyier Technology Development Co., Ltd. The downhole water distributor is a core component of the system, which consists of an intelligent downhole water distributor, a remote intelligent modem, and a remote control system for zonal water injection. It can replace conventional equipment and perform testing, adjustment, management, and automated control of injection wells without additional equipment. The communication system uses internationally adopted protocols and can connect directly to standard domestic and international networks. Data acquisition and control commands are transmitted using dedicated encoding and decoding systems to protect oilfield data during remote transmission. The products are manufactured in accordance with ISO 9000 standards and have passed quality inspection by national testing institutions.
Detailed Introduction
The ZDJXCK-80-40 series was developed for zonal water-injection operations in line with Industry 4.0, current well-testing and adjustment practices, and oilfield digitalization requirements. It addresses challenges such as the need for multiple devices and instruments, complex operations, and frequent problems during testing and adjustment. It also responds to unstable injection and low compliance with allocated water rates caused by changing formation pressure.
The system integrates computer-network communications, piezoelectric control, artificial-intelligence control, and waveform-pulse signalling with modern control and remote-control technologies. Without auxiliary equipment, one system can collect well data, provide intelligent control and remote management, and support communication between surface and downhole equipment. It improves well management and balanced water injection, reduces the amount of equipment and manual work required, and extends digital oilfield capabilities as a fourth-generation zonal water-injection system.
Technical Parameters
| Technical Parameter | OIL-PS-114-PPD-I | OIL-PS-92-PPD-I | OIL-PS-81-PPD-I |
|---|---|---|---|
| Operating Pressure (MPa) | 60 | 60 | 60 |
| Maximum Differential Pressure for Valve Opening (MPa) | 35 | 35 | 35 |
| Flow Measurement Range | 0–150 m³/d (optional) | 0–150 m³/d (optional) | 0–150 m³/d (optional) |
| Flow Measurement Accuracy | 2% | 2% | 2% |
| Pressure Measurement Accuracy | 0.1% FS | 0.1% FS | 0.1% FS |
| Operating Temperature (°C) | 120 | 120 | 120 |
| Total Tool Length (mm) | 1240 | 1240 | 1240 |
| Maximum Outer Diameter (mm) | 114 | 92 | 81 |
| Continuous Working Time | ≥3 years | ≥3 years | ≥3 years |
| Minimum Inner Diameter (mm) | 44 | 30 | 25 |
| Connection Threads at Both Ends | 2 7/8 NU | 2 7/8 NU | 2 7/8 NU |
| Applicable Vertical Well Depth (m) | ≤3500 | ≤3500 | ≤3500 |
| Initial Valve State | Off | Off | Off |
Technical Advantages
- Improves testing and adjustment efficiency for zonal-allocation wells, enabling a well to be tested and adjusted within one to two days and allowing injection settings to be changed as needed.
- Requires no additional testing instruments or field crew: one surface operator can remotely control the downhole distributor valves, reducing costs, equipment use, labour, and operational risk.
- Remote control and data transmission provide pressure and flow readings for each zone. Measurement error is controlled, with water-volume error no greater than 0.2%.
- Intelligent control keeps each zone’s injection rate within 10% of the geological plan and the total well rate within 5%, helping improve compliance with injection targets.
- Provides a six-level, six-zone system for zonal injection and testing, with rapid expansion capability to support more precise injection management.
- Multi-level intelligent control supports low-rate wells, especially wells injecting 20 m³/day or less.
- Uses straightforward controls and remote operation for zonal-injection, commingled-injection, pilot, alternating-injection, and high-deviation wells that are difficult to test and adjust.
