Single Centrifuge Drilling Mud Treatment Plant
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Solution Overview
Problem
Current mud treatment plants face challenges in maintaining optimal mud density and separating fine solids like slime and clay, leading to increased costs, environmental impact, and reduced efficiency due to the need for multiple centrifuges and frequent mud disposal.
Innovation Solution
A single centrifuge-based mud treatment plant with a computer-controlled system that adjusts the flow rates of high-density and clean mud, along with additives, to maintain optimal mud density and separate solids effectively, reducing the need for frequent refills and minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple centrifuges are used to separate fine solids like slime and clay, then the separation effectiveness improves, but the device complexity and cost increase
Solution Approach 1:
The patent combines multiple centrifuges into a single centrifuge unit that processes mud from multiple cyclone stages simultaneously. This merging approach maintains the separation effectiveness of multiple units while reducing device complexity and space requirements. The single centrifuge is designed to handle mixed feed from different cyclone outlets, achieving fine solids removal comparable to multiple separate centrifuges.
Solution Approach 2:
The single centrifuge is designed with multi-functional capability to process mud feeds from different cyclone stages (first and second cyclone outlets). It can handle varying mud densities and solid concentrations by adjusting operational parameters, effectively replacing multiple specialized centrifuges with one versatile unit that performs the same separation function across different feed conditions.
2Strength
If high-density mud is used to stabilize excavation walls, then the stabilizing effect improves, but the power requirements for centrifugal pumps increase
Solution Approach 1:
The patent controls mud density as a variable parameter, adjusting it within an optimal range rather than maintaining consistently high density. By regulating density between 1.05-1.20 g/cm³ through the centrifugal separation process, the system achieves adequate wall stabilization while preventing excessive density that would require higher pump power. This dynamic parameter control balances stabilization needs with energy consumption.
3Strength
If mud density is increased above 1.15 t/m³, then the stabilizing effect improves, but the risk of cake formation and concrete casting problems increases
Solution Approach 1:
The patent implements a feedback control system that continuously monitors mud density and adjusts the centrifugal separation process accordingly. When density approaches the critical threshold of 1.15 g/cm³, the system increases separation intensity to remove fine solids, preventing excessive density buildup. This feedback mechanism maintains density within the safe range of 1.05-1.20 g/cm³, avoiding cake formation and concrete casting problems while preserving adequate stabilization.
Solution Approach 2:
The system dynamically adjusts mud density parameters within the optimal range of 1.05-1.20 g/cm³, preventing density from exceeding 1.15 g/cm³. By controlling density as a variable rather than a fixed high value, the patent achieves sufficient wall stabilization while eliminating the harmful effects of excessive density including cake formation and concrete contamination risks.
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 system stabilizes mud density at optimal levels, reduces costs by minimizing the need for multiple centrifuges and frequent mud disposal, and maintains consistent mud quality, enhancing drilling efficiency and environmental sustainability.
Implementation Method 1
at least one cyclone stage (23, 24), each comprising: at least one inlet for inserting a mud to be treated; at least one first outlet for taking out a lightened mud (Fa) with a lower density than the mud going in; at least one second outlet for taking out a high-density mud (Fd) with a greater density than the mud going in
Implementation Method 2
a centrifuge (32) capable of dividing a high-density mud (Fd) into a lightened mud (Fc) with a lower density than the high-density mud (Fd) and a concentrated mud (Fe) with a higher density than the high-density mud (Fd)
Data Source
Figure 1
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AI summary
Plant (3) for treating drilling muds, comprising: a main mud storage tank (11), containing the clean mud (F') ready to be conveyed to the same excavation (S); a first grizzly screen (21); a mud processing hopper (22); at least one cyclone stage (23,24), provided with at least an inlet and with at least a first outlet from which a lightened mud (Fa) exits, and with at least a second outlet from which a high density mud (Fd) exits; and a dewatering screen (25); said devices are connected together through pipes in such a way that a mud filled with detritus (F") coming from the excavation (S), is treated in order to be able to be reused once it is returned to the excavation (S); wherein said high density mud (Fd) is drawn from at least a cyclone stage (23,24) downstream of said second outlet and it is conveyed, at least partially, towards a centrifuge (32).