Perpendicular Valve Drive for Mud Pressure Wave Modulation
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Solution Overview
Problem
Existing mud pulse modulation apparatuses in petroleum drilling have slow response times, low torque, high energy consumption, and low electric energy utilization due to their configuration with shear or rotary valves parallel to the drilling fluid flow, which limits the efficiency of data transmission in advanced Measurement While Drilling (MWD) technology.
Innovation Solution
A mud pressure wave signal modulation apparatus with a motor-driven valve plate rotated perpendicular to the drilling fluid flow, forming a cross-section to control the drilling fluid channel, and a control circuit to manage the valve plate's rotation, enhancing torque and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a motor drives a rod parallel to the flow direction to rotate the valve plate, then the valve plate can be rotated, but the response is slow and the torque acting on the valve plate is small
Solution Approach 1:
The patent inverts the conventional configuration by placing the motor and valve plate perpendicular to the flow direction instead of parallel. The motor drives the valve plate to rotate around an axis perpendicular to the flow, creating a cross-section that directly controls the flow channel. This inversion allows the motor to directly act on the valve plate without intermediate rods, significantly increasing torque and response speed.
Solution Approach 2:
The patent merges the motor and valve plate into a compact integrated structure where the motor directly couples to the valve plate. This eliminates the need for separate rod mechanisms and reduces mechanical transmission losses, resulting in higher torque delivery and faster response to control signals.
2Use of energy by moving object
If a motor drives a rod parallel to the flow direction to rotate the valve plate, then the valve plate can be rotated, but the energy consumption is large and the electric energy utilization rate is low
Solution Approach 1:
By inverting the configuration to perpendicular mounting, the motor directly drives the valve plate without intermediate mechanical linkages. This reduces friction losses and mechanical inefficiencies in the transmission path, improving electric energy utilization and reducing overall energy consumption.
Solution Approach 2:
The patent extracts and eliminates the intermediate rod mechanism from the system. By removing this unnecessary mechanical transmission component, energy losses through friction and mechanical inefficiency are reduced, leading to lower energy consumption and improved electrical energy utilization.
3Productivity
If conventional mud pulse modulation apparatus with shear or rotary valves is used, then the structure is established, but the data transmission rate is low and it cannot meet multi-parameter real-time transmission demand
Solution Approach 1:
The patent inverts the conventional valve configuration from parallel to perpendicular mounting relative to the flow direction. This creates a cross-sectional valve structure that more effectively modulates the drilling fluid flow, enabling higher data transmission rates while simplifying the overall mechanical structure.
Solution Approach 2:
The patent changes the geometric parameters of the valve system by rotating the valve plate around a perpendicular axis, creating variable cross-sectional areas that directly control flow modulation. This parameter change enables more efficient encoding of multiple parameters into the mud pulse signals, increasing data transmission capacity.
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
The apparatus achieves faster response times, increased torque, and improved electric energy utilization, enabling more efficient data transmission in petroleum drilling operations.
Implementation Method 1
the valve plate is driven by the motor to be rotated around an axial direction perpendicular to a flow direction of drilling fluid, and a cross-section for controlling a size of an actual flow channel of the drilling fluid in a drilling fluid channel is formed through the rotation of the valve plate
Data Source
AI summary
The present disclosure discloses a mud pressure wave signal modulation apparatus and method, which relate to the technical field of petroleum drilling engineering. The apparatus includes: a motor (5), a valve plate (3), a main control circuit (23), a motor drive control circuit, and a downhole communication circuit; the valve plate (3) is driven by the motor (5) to be rotated around an axial direction perpendicular to a flow direction of drilling fluid; the motor (5) and the valve plate (3) are disposed in a drilling fluid channel (2), and the drilling fluid channel (2), the motor (5), the valve plate (3), the main control circuit (23), the motor drive control circuit and the downhole communication circuit are disposed in a drill collar.