Screen Dump Station for Drilling Mud Separation

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Solution Overview

Problem

Spent drilling mud poses disposal challenges due to the presence of dislodged soil and debris, making it unsuitable for immediate reuse and violating environmental regulations when deposited wet, as it contains valuable original drilling fluid mixed with inappropriate materials.

Innovation Solution

A system comprising a vehicle travel path with ramps and a dumping station featuring a screen and tank, where the screen separates spent mud into particulate-rich and fluid-rich portions, allowing for the cleaning and recycling of the fluid for reuse while drying and separating the particulates for appropriate disposal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If spent drilling mud is deposited directly, then disposal is simple and quick, but it violates environmental regulations and wastes valuable drilling fluid

Engineering Contradiction:
Improvedisposal speedVSAvoidenvironmental violation
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The spent drilling mud is segmented into solid particulates and liquid fluid components through screening. The screen separates the slurry material into a particulate-rich flowpath and a fluid-rich flowpath, allowing different disposal methods for each component. This segmentation enables the liquid portion to be recycled rather than disposed of, eliminating environmental violations while maintaining efficient disposal of solids.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system recovers valuable drilling fluid from the spent mud by separating it from contaminated particulates. The fluid-rich portion collected in the tank can be cleaned and reused, while only the particulate matter is discarded. This recovery process eliminates environmental harm from improper disposal while maintaining high disposal efficiency for the actual waste material.

Inventive Principle:
Principle #34Discarding and recovering

2Loss of time

If spent drilling mud is disposed of immediately, then time and resources are saved, but valuable drilling fluid is wasted and environmental regulations are violated

Engineering Contradiction:
Improvedisposal timeVSAvoiddrilling fluid loss
Core Design Contradiction:
Loss of timeVSLoss of substance

Solution Approach 1:

The screen is positioned to receive and separate spent mud immediately upon deposition, performing preliminary separation before full processing. This preliminary action quickly divides the spent mud into recyclable fluid and disposable solids, minimizing time loss while preventing fluid waste by capturing the liquid portion for recovery and reuse in the drilling process.

Inventive Principle:
Principle #10Preliminary action

3Object-affected harmful factors

If a screening system is added to separate spent mud, then drilling fluid can be recycled and environmental regulations met, but device complexity increases

Engineering Contradiction:
Improveenvironmental complianceVSAvoidsystem complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The screening system is merged with the existing deposition infrastructure by positioning the screen within the vehicle travel path and dumping station. The tank collecting fluid-rich material is integrated directly beneath the screen, combining separation, collection, and initial recycling functions into a unified system. This merging achieves environmental compliance without requiring entirely separate complex processing facilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The screen serves multiple functions: it separates particulates from fluid, directs fluid-rich material to the collection tank, and enables both recycling and disposal pathways. The dumping station structure provides both vehicle support and material deposition functions. This multi-functionality reduces the need for additional specialized equipment, maintaining relatively simple system architecture while achieving environmental compliance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Loss of substance

If the screen separates slurry into particulate and fluid portions, then drilling fluid can be cleaned and reused, but the device complexity and processing time increase

Engineering Contradiction:
Improvedrilling fluid wasteVSAvoidseparation system complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

The screen passively separates particulates from fluid based on size differences without requiring active control systems or complex mechanisms. The gravity-driven flow through the screen and into the collection tank operates automatically as spent mud is deposited, eliminating the need for pumps, motors, or control systems. This self-service approach minimizes device complexity while effectively preventing drilling fluid waste through separation and collection.

Inventive Principle:
Principle #25Self-service

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

Effectively recycles drilling fluid by separating and cleaning it, enabling its reuse while allowing dry particulates to be disposed of safely, adhering to environmental regulations and maximizing material value.

Implementation Method 1

The screen separates the slurry material into a particulate-rich flowpath and a fluid-rich flowpath

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

The apparatus comprises a bridge, a screen, a vibrator, a tank, and a conveyor

Methodology Applied
Scientific EffectVibration: Vibration

Data Source

PatentUS11547962B2Screen dump station system for disposing of spent drilling mud
Publication Date: 2023.01.10 CHARLES MACHINE WORKS INC
  • US11547962B2 patent drawing
  • US11547962B2 patent drawing
  • US11547962B2 patent drawing

AI summary

A processing system for a slurry material. The system has a vibratory screen disposed atop an open-topped tank. A travel path for a vehicle is disposed directly above the screen and the tank. Slurry material dumped from the vehicle onto the screen is separated at the screen into a particulate-rich stream and a fluid-rich stream. The fluid-rich stream may be pumped to a cleaner so that it may be stored and re-used as drilling fluid. The screen may be a conveyor which removes the particulate-rich stream from above the tank.