Compact Screw Articulation Mechanism for Deployable Proppant Silos

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Solution Overview

Problem

The challenge in the oilfield industry is the practical limitation of erecting and filling large proppant silos due to the need for significant space and hydraulic support, especially when dealing with heavy and complex well architectures, which requires efficient and compact solutions for proppant delivery and storage.

Innovation Solution

A compact articulation mechanism using a screw device with a housing and screw jack, allowing for lateral movement and secure locking, is employed to support joints in oilfield equipment, enabling the deployment and transport of large-scale silos and auger arms without the need for extensive hydraulic systems, thus reducing space requirements and enhancing stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional hydraulic systems are used to erect and position heavy proppant silos and equipment, then the equipment can be deployed and positioned, but the system requires significant space, complexity, and constant power supply

Engineering Contradiction:
ImproveEquipment deployment capabilityVSAvoidHydraulic system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces complex hydraulic systems with a simpler mechanical screw device and jack system. The screw device (110) with threaded engagement provides mechanical advantage for lifting and positioning heavy equipment, eliminating the need for complex hydraulic pumps, valves, and fluid systems while reducing space requirements and operational complexity

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The screw device functions as a self-locking mechanism where the threaded engagement inherently maintains position without requiring constant power supply or active control systems. Once the equipment is positioned, the mechanical threads self-lock to maintain the elevated position, eliminating the need for continuous hydraulic pressure or power consumption

Inventive Principle:
Principle #25Self-service

2Area of stationary object

If large proppant silos are erected vertically to reduce footprint, then space requirements are minimized, but the equipment becomes heavier and requires more powerful hydraulic support

Engineering Contradiction:
ImproveFootprint areaVSAvoidEquipment weight
Core Design Contradiction:
Area of stationary objectVSWeight of moving object

Solution Approach 1:

The patent divides the heavy equipment into modular segments that can be assembled in a collapsed, space-efficient configuration for transport. The silo and supporting structures are segmented into sections that fold or collapse together, reducing the transport footprint while maintaining full vertical capacity when deployed at the destination

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The equipment transitions from a three-dimensional expanded configuration during operation to a compressed, multi-dimensional collapsed state for transport. The structure utilizes folding mechanisms and nested arrangements that reduce the equipment envelope in multiple dimensions simultaneously, allowing heavy equipment to be transported in compact form

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Quantity of substance

If multiple small loaded silos are delivered to provide sufficient proppant supply, then the total proppant capacity is achieved, but the number of deliveries and setup time increases

Engineering Contradiction:
ImproveProppant supply capacityVSAvoidSetup and delivery time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The patent combines multiple proppant storage capacities into a single integrated silo structure. Rather than delivering and assembling multiple separate silos, the design provides one large-capacity silo that accommodates sufficient proppant for extended operations, reducing the number of deliveries and assembly operations required

Inventive Principle:
Principle #5Merging (Combining)

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 solution allows for the efficient deployment and transport of heavy oilfield equipment, reducing the footprint and operational complexity, while ensuring stability and safety, even in vibrating environments, by eliminating the need for constant power supply and minimizing space requirements for hydraulic systems.

Implementation Method 1

a screw device (110) that has one end pivotally secured to a first of the elongated portions but insecure at an opposite end

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 2

a screw jack (120) that is coupled to the housing between the ends of the device for sake of lateral and substantially locking engagement therewith

Methodology Applied
Scientific EffectSelf-locking mechanism: Ratchet

Data Source

PatentUS11415202B2Compact articulation mechanism
Publication Date: 2022.08.16 LIBERTY ENERGY SERVICES LLC
  • US11415202B2 patent drawing
  • US11415202B2 patent drawing
  • US11415202B2 patent drawing

AI summary

An articulation mechanism for large scale mobile aggregate system equipment. The mechanism includes a screw device that is pivotally secured to an elongated portion of the equipment to drive its movement to and from a collapsed position. The screw device is driven by a screw jack and moved within a housing while the housing itself is pivotally secured to another portion of the equipment. Rollers within the housing may be used to stabilize the lateral movement of the screw device during the opening, closing or self-locking of the elongated portion by the mechanism.