Shaker Fluid Distribution Box for Drilling Mud Separation
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Solution Overview
Problem
Current shakers used in oilfield drilling operations are inefficient in separating solids from drilling fluid, requiring time-consuming and costly mud evaluation and mixture processes, and existing vibratory separators do not effectively recycle drilling mud due to inadequate particle-fluid separation mechanisms.
Innovation Solution
A shaker apparatus with multiple screening decks and a fluid distribution system that includes a flow-back pan with channels and conduits to route initially separated drilling fluid to multiple screening decks, allowing for parallel or series flow configurations to optimize solid separation and fluid recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single screening deck is used in existing vibratory separators, then the device complexity is low, but the separation efficiency and productivity are insufficient
Solution Approach 1:
The screening system is segmented into multiple independent screening decks (first screening deck, second screening deck, third screening deck) that can process different particle size ranges simultaneously. Each deck is equipped with its own screen surface and vibration mechanism, allowing parallel separation operations that significantly increase overall productivity while maintaining manageable complexity through modular design
Solution Approach 2:
The system transitions from a single-plane screening approach to a multi-level vertical arrangement of screening decks. The fluid distribution box distributes drilling fluid to multiple decks at different heights, creating a three-dimensional separation system that processes materials through multiple screening surfaces simultaneously, thereby increasing separation capacity without proportionally increasing footprint area
2Loss of substance
If drilling fluid is not properly separated, then the loss of time for mud evaluation and mixture is reduced, but the loss of substance (drilling mud) increases
Solution Approach 1:
The system performs preliminary separation of drilling fluid from solid particles at the first screening deck before further processing. This preliminary action removes the bulk of solids, allowing the returned fluid to be quickly evaluated and reused without requiring extensive re-processing time, thus simultaneously reducing both substance loss and time loss
Solution Approach 2:
The vibratory screening system operates continuously to separate solids from drilling fluid in an uninterrupted manner. The continuous operation maintains a steady flow of separated fluid that can be immediately reused in drilling operations, minimizing both the time lost to separation processes and the amount of drilling mud that needs to be discarded
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 described shaker system enhances the separation of solids from drilling fluid, enabling more efficient recycling of drilling mud by ensuring effective particle-fluid separation across multiple stages, reducing operational costs and improving drilling fluid quality.
Implementation Method 1
A shaker includes a top screening deck, a flow-back pan positioned beneath the top screening deck for receiving an initially separated drilling fluid from the top screening deck
Implementation Method 2
drilling mud provides a column of hydrostatic pressure, or head, to prevent 'blow out' of the well being drilled. This hydrostatic pressure offsets formation pressures
Implementation Method 3
the drilling mud acts as a lubricant to cool rotary drill bits and facilitate faster cutting rates
Data Source
AI summary
A shaker for separating solids from a drilling fluid includes a top screening deck (130), a flow-back pan (160) positioned beneath the top screening deck (130) for receiving an initially separated drilling fluid from the top screening deck. The flow-back pan (160) is divided into a plurality of channels (A, B, C, D). The shaker further includes a fluid distribution box (210), which includes a plurality of conduits (A, B, C, D). Each channel (A, B, C, D) of the flow-back pan (160) corresponds to one of the plurality of conduits (A, B, C, D) in the fluid distribution box (210) and each channel communicates a stream of the initially separated drilling fluid to the corresponding conduit. The shaker further includes a middle screening deck (140) and a bottom screening deck (150). Each conduit (A, B, C, D) routes the stream of initially separated drilling fluid to a corresponding one of the middle screening deck (140) and the bottom screening deck (150).