Dual-Direction Lost Circulation Sensing for Accurate Leak Positioning
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Solution Overview
Problem
Existing lost circulation detection devices in drilling operations suffer from inaccurate determination of leakage points due to detection errors, leading to inefficiencies and increased costs.
Innovation Solution
A lost circulation detection device comprising a first detection member with oppositely disposed signal transmitters and receivers along the axial direction of a rockshaft, and a second detection member with a fluid channel and oppositely disposed signal transmitters and receivers along the circumferential direction, allowing for mutual calibration of leakage positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection member with sensor is used to collect drilling fluid data, then the device structure is simple, but the detection precision and positioning accuracy of leakage points are insufficient
Solution Approach 1:
The detection device is divided into two independent detection members, each equipped with sensors for collecting drilling fluid data from different spatial directions. The first detection member collects data along the axial direction, while the second detection member collects data along the circumferential direction, enabling comprehensive three-dimensional monitoring and improving detection precision without requiring a single overly complex detection unit
Solution Approach 2:
The invention transitions from single-direction (axial) detection to multi-directional detection by adding circumferential direction detection capability. The second detection member introduces a new detection dimension perpendicular to the first, creating a two-dimensional detection matrix that significantly improves leakage point positioning accuracy through spatial cross-validation
2Measurement precision
If multiple detection members are used to improve positioning accuracy, then the detection precision is improved, but the device complexity increases
Solution Approach 1:
Two detection members with different detection orientations are merged into a single integrated lost circulation detection device. Both detection members work simultaneously and their data is processed together through a unified control system, achieving synergistic effect where the combination of axial and circumferential detection provides more accurate positioning than either detection member could achieve alone
Solution Approach 2:
The control system receives data from both detection members and performs cross-validation and comparative analysis. When detection results from the first and second detection members are inconsistent, the system can identify potential errors and adjust detection parameters, creating a feedback mechanism that continuously optimizes detection accuracy and reduces false positives
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
Enhances the accuracy of leakage point detection by ensuring that discrepancies in data from both members indicate errors, prompting timely adjustments for improved positioning accuracy.
Implementation Method 1
the first signal transmitter transmits a signal along the axial direction of the rockshaft, so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft
Implementation Method 2
the second signal transmitter transmits a signal along a center line of the second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft
Data Source
AI summary
A lost circulation detection device includes a first detection member and a second detection member, a first signal transmitter and a first signal receiver are disposed on the first detection member, and the first signal transmitter transmits a signal along an axial direction of a rockshaft so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft; a fluid channel penetrating through the second detection member is disposed in the second detection member, and the fluid channel is configurable to be in communication with the rockshaft; a second signal transmitter and a second signal receiver are disposed oppositely on two sides of the fluid channel, and the second signal transmitter transmits a signal along a center line of a second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft.