Percussive Drilling Tool with Elastic Energy Storage
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The lifespan of percussion drilling tools in oil drilling applications is a bottleneck, limiting the development of speed-enhancing technologies for deep/ultra-deep well drilling, where existing tools are immature and inefficient.
Innovation Solution
A speed-enhancing drilling tool that combines compound dual-drive drilling technology, rotary percussive drilling, and elastic energy storage, featuring a percussive device with a rotary driving part, working part, and percussion generating part, which uses an elastic member to transmit impact energy to the drilling bit for enhanced rock breaking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If percussion drilling tools are used to enhance drilling speed in deep/ultra-deep wells, then drilling efficiency is improved, but tool lifespan is reduced
Solution Approach 1:
The patent combines rotary drilling and percussion drilling into a single integrated tool system. The rotary driving part provides continuous rotation while the percussion generating part delivers intermittent impact loads, allowing the tool to benefit from both drilling modes simultaneously. This merging resolves the contradiction by enabling high drilling speed through percussion while maintaining tool reliability through the stability of rotary drilling and balanced load distribution.
Solution Approach 2:
The tool employs dynamic load distribution through its dual-drive mechanism. The rotary component provides steady rotational motion while the percussion component adds dynamic impact forces during specific phases of the drilling cycle. This dynamic operation allows the tool to adapt loading conditions, enhancing rock-breaking efficiency while preventing excessive static loads that would reduce tool lifespan.
2Power
If high-power motor drilling tool is used to improve rotational speed and cutting strength, then rock-breaking efficiency is improved, but device complexity increases
Solution Approach 1:
The drilling tool is designed with multi-functionality, where a single integrated system performs both rotary drilling and percussion functions. The drive motor and associated mechanisms serve dual purposes: providing continuous rotation for cutting and generating percussive impacts for rock fragmentation. This universality reduces the need for separate specialized tools, thereby managing complexity while delivering high power for both rotational speed and cutting strength.
Solution Approach 2:
The tool is segmented into distinct functional modules: a rotary driving part for continuous rotation and a percussion generating part for impact delivery. Each module is independently designed and can be optimized separately, yet they work together as an integrated system. This segmentation allows high power to be distributed across specialized components, improving overall performance while keeping each component's complexity manageable.
3Productivity
If compound dual-drive drilling technology with rotary percussive drilling is used, then rock-breaking efficiency is improved, but adjustment capability for percussive energy is limited
Solution Approach 1:
The tool incorporates adjustable parameters for percussive energy delivery. The percussion generating part can be configured to vary impact frequency, amplitude, and timing relative to the rotary cycle. By changing these parameters, the tool can adapt to different rock types, well conditions, and drilling stages, thereby improving rock-breaking efficiency while maintaining versatility and adjustability.
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
This combination significantly enhances drilling efficiency and reduces costs by enabling high-power rotary torque, adjustable percussive energy, and high-speed rotary cutting, improving rock-breaking efficiency and extending tool lifespan.
Implementation Method 1
a percussion generating part arranged around the rotary working part and having an upper end abutting against an elastic member, wherein the percussion generating part is configured to move along the axial direction relative to the rotary working part, so as to impact the rotary working part downwardly along the axial direction under action of the elastic member
Data Source
AI summary
A speed-enhancing drilling tool includes an upstream drill string (10), which has a drive motor and a first driving rod coupled therewith, a downstream drilling bit; and a percussive device connected between the upstream drilling string and the downstream drilling bit. The first driving rod extending axially and the drive motor are configured to drive the first driving rod in rotation. The percussive device has a rotary driving part having an upper end engaged with the first driving rod to rotate together therewith; and a rotary working part having an upper end engaged with a lower end of the rotary driving part and a lower end connected with the downstream drilling bit. The rotary working part can be driven by the rotary driving part to rotate about its axis, and axially movable relative thereto; and a percussion generating part arranged around the rotary working part.