Modular Drilling Rig Mast Section Assembly via Inverted Pulley Lifting
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Solution Overview
Problem
Conventional drilling rig installations in mountainous and hilly regions are time-consuming, labor-intensive, and require significant space and resources due to the need for large, heavy equipment and complex assembly processes, particularly for middle-deep well drilling which often necessitates multiple sections and extensive manual operation.
Innovation Solution
A modular drilling rig design featuring a K-type mast composed of sections that can be easily transported and assembled, utilizing a system of lifting devices, pulley blocks, and guide rails to facilitate vertical lifting and alignment, reducing the need for extensive manual operation and minimizing site space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional K-type or A-type mast drilling rig is used with horizontal installation and winch or hydraulic cylinder lifting, then the mast can be installed, but it occupies large area and demands more installation time
Solution Approach 1:
The mast is divided into multiple sections (first section, second section, third section, fourth section) that can be transported separately and assembled vertically. This segmentation allows for more compact storage and transportation while reducing the overall area occupied during installation, and the modular design actually speeds up assembly compared to traditional methods.
2Ease of manufacture
If drilling rig with helical or box-on-box type substructure is used, then the substructure can be assembled, but it needs heavy workload and more operation skills
Solution Approach 1:
The substructure is divided into modular components (middle module with hydraulic rotary table, middle base, right transportable module with right bottom base and right top base, left transportable module with left bottom base and left top base) that can be independently assembled. This modular segmentation simplifies the assembly process and reduces the skill level required compared to traditional helical or box-on-box structures.
3Ease of operation
If the mast sections are lifted substantially vertical sequentially by their own lifting mechanism, then the installation workload is reduced, but it requires a larger base section door which is not good for substructure lifting and installing
Solution Approach 1:
Instead of lifting each section vertically through a large base door, the invention inverts the approach by using a cable-pulley system that allows sections to be pulled into position horizontally or at shallow angles through a smaller door opening, then raised into final vertical position. This eliminates the need for a large base door while maintaining ease of installation.
4Length of moving object
If a middle-deep well drilling rig is divided into more sections, then the lifting mechanism can handle shorter sections, but it requires more sections to be assembled
Solution Approach 1:
The mast is segmented into four manageable sections of appropriate lengths for middle-deep well drilling applications. This segmentation allows each section to be handled by standard lifting equipment while the modular pin-connection system keeps the overall assembly process simple, effectively balancing section length with assembly 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
The modular design significantly reduces installation time and costs by allowing for rapid and efficient assembly of the drilling rig, enabling longer section lengths with less lifting power and improving the suitability for deep-well drilling while conserving site space and resources.
Implementation Method 1
a movable pulley block connects to a substantially vertical section (the fourth section, the third section, the second section, the first section) lifting lug lower region for the section (the fourth section, the third section, the second section, the first section) lifting
Implementation Method 2
after a lifting steel wire rope wound from the lifting devices, the rope winds around the guide pulley and the movable pulley block as well as the fixed pulley block
Implementation Method 3
a guide rail strip made from a wear-resistant material is installed on the third section and the second section as well as the first section front and rear pillar and on the surface of the fourth outer frame, and an aligning plate is fixed on the front and rear pillar of the base section, and the guide rail strip skids on the aligning plate during section lifting
Data Source
AI summary
A drilling rig includes a base section, a first section, a second section, a third section and a fourth section. For the base section upper region, a fixed pulley block and a guide pulley are installed. Except for the fourth section-crown block section, each section lower region is installed with a lifting lug for a movable pulley block installation for substantially vertical lifting. The crown block section is installed substantially vertical; the subsequent section is located substantially horizontal with the section front pillar upper region connecting to the previous section front pillar lower region. The previous section is substantially vertical lifted to draw the next section skidding into the base section and lifting substantially vertical with the previous section pillar lower region connected to the next section pillar upper region.