Wireless Downhole Throttling Device
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Solution Overview
Problem
Current downhole throttling devices require manual and labor-intensive operations for nozzle replacement, leading to high costs, long operation cycles, and risks in the oil and gas production process, with no mature wireless intelligent control tools available for controlling downhole fluid flow in China.
Innovation Solution
A wireless-controlled downhole throttling device comprising an inlet nozzle, throttling assembly, electrical sealing cylinder, gas guide cylinder, and electrical components, including a motor, circuit control assembly, and integrated temperature and pressure sensor, allowing remote adjustment of the throttling nozzle through existing well site gas production devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual rope operation is used to replace downhole throttling devices, then nozzle replacement can be achieved, but operation time is long (4-5 days), costs are high, and risks increase
Solution Approach 1:
The patent replaces the traditional mechanical rope operation system with an electrical drive system. A motor (801) connected to the moving valve (204) through a bearing enables remote electrical control of the throttling device, eliminating the need for manual rope operations and significantly reducing operation time and costs.
Solution Approach 2:
The patent introduces an intermediary control system consisting of the motor (801), circuit control assembly (802), and battery assembly (803) that mediates between the operator and the downhole throttling device. This intermediary system enables remote control without direct mechanical intervention, solving the problem of long operation cycles and high costs.
2Adaptability or versatility
If manual rope operation is used for nozzle replacement, then throttling adjustment is possible, but manpower and material resources are heavily consumed
Solution Approach 1:
The downhole throttling device is equipped with its own drive system (motor 801, battery assembly 803, circuit control assembly 802) that enables it to adjust its own throttling position remotely. This self-service capability eliminates the need for external rope operations and heavy manpower consumption while maintaining production regulation flexibility.
Solution Approach 2:
The device integrates multiple functions including throttling control, remote actuation, and production monitoring within a single downhole assembly. The moving valve (204) can be remotely positioned to achieve different throttling effects, providing universal adaptability for various production regulation needs without requiring multiple separate operations.
3Extent of automation
If traditional mechanical throttling devices are used, then downhole flow control is achieved, but wireless intelligent control capability is absent
Solution Approach 1:
The patent employs a nested structure where the electrical sealing cylinder (3) containing the motor (801) and battery assembly (803) is positioned within the gas guide cylinder (4), which in turn is housed in the downhole assembly. This nested arrangement accommodates the additional automation components without significantly increasing overall device footprint or complexity.
Solution Approach 2:
The patent merges the traditional mechanical throttling mechanism with an electrical drive system into a single integrated device. The motor (801) is directly coupled to the moving valve (204), combining mechanical flow control with electrical actuation in one unified system, thereby achieving wireless intelligent control without proportionally increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables remote and wireless control of downhole throttling, reducing manpower and time costs, enhancing safety and efficiency in natural gas well development, and improving production adjustment capabilities.
Implementation Method 1
The motor, the battery assembly and the sensor are electrically connected to the circuit control assembly. The motor, the circuit control assembly and the battery assembly are arranged in the electrical sealing cylinder
Implementation Method 2
the moving valve is connected to the middle adapter sleeve via a bearing
Data Source
AI summary
A downhole throttling device based on wireless control includes an inlet nozzle, a throttling assembly, an electrical sealing cylinder, a gas guide cylinder, a lower adapter sleeve, an end socket, a female sleeve, and electrical components. The inlet nozzle is connected to the throttling assembly, the throttling assembly is connected to the electrical sealing cylinder and the gas guide cylinder, the electrical sealing cylinder and the gas guide cylinder are both connected to the lower adapter sleeve, the lower adapter sleeve is respectively connected to the end socket and the female sleeve, and the electrical components are arranged in the electrical sealing cylinder. A throttling effect is achieved by detecting the temperature and pressure in a tube by a temperature/pressure sensor in the electrical components and controlling a motor to rotate a movable valve in the throttling assembly by a circuit control assembly, thereby achieving wireless control over downhole throttling.