Pre-hydrated Friction Reducer for Wellbore Fluids
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Solution Overview
Problem
Friction reducers in fracturing fluids require significant hydration time to achieve maximum friction reduction, leading to increased mechanical stress on pumps and reduced efficiency during wellbore operations.
Innovation Solution
A pre-hydration apparatus that mixes a friction reducer with water to form a pre-hydrated fluid, which is then blended with a base fluid to create a treatment fluid, allowing for immediate introduction into the wellbore, reducing friction by at least 50% within minutes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If friction reducer is added to fracturing fluid, then friction reduction is achieved, but hydration time is extended and pump efficiency is reduced
Solution Approach 1:
The friction reducer is pre-hydrated in a separate apparatus before being introduced into the fracturing fluid system. This preliminary hydration action separates the hydration process from the main pumping operation, allowing the friction reducer to be fully hydrated in advance and then immediately effective when mixed with the fracturing fluid, thereby eliminating the hydration time delay during wellbore operations
Solution Approach 2:
The system is divided into two separate functional components: a pre-hydration apparatus that prepares the friction reducer by mixing it with water, and the main fracturing fluid system that receives the pre-hydrated friction reducer. This segmentation allows the hydration process to occur independently before the friction reducer is introduced into the high-pressure fracturing fluid stream, resolving the conflict between achieving friction reduction and minimizing hydration time
2Object-affected harmful factors
If friction reducer is added to fracturing fluid, then friction reduction is achieved, but mechanical stress on pumps is increased
Solution Approach 1:
The friction reducer is pre-hydrated before being introduced into the fracturing fluid system. This preliminary action ensures that the friction reducer is already in its effective hydrated form when it mixes with the fracturing fluid, allowing immediate friction reduction and preventing the buildup of mechanical stress on pumps during the hydration process
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 pre-hydration process significantly reduces the time required for friction reduction, enhancing the efficiency of wellbore operations by minimizing mechanical stress on pumps and ensuring consistent fluid flow, while allowing for precise control of friction reducer concentration.
Implementation Method 1
Friction reducers can include any material or combination of materials known in the art that reduce friction in a fluid... Some friction reducers hydrate in water to provide a desired percentage of friction reduction
Data Source
AI summary
Friction reducers can be used in fluids for oil and gas operations. Friction reducers can be water-hydratable and can decrease the friction within wellbore components after fully hydrating. The friction reducer can be pre-hydrated at the well site. The friction reducer and water can be combined into a static mixer of a pre-hydration apparatus that forms a mixed fluid. The friction reducer can be retained in the pre-hydration apparatus for a sufficient period of time to allow the friction reducer to hydrate. The mixed fluid containing the pre-hydrated friction reducer can then be added to a base fluid to form a treatment fluid. The treatment fluid can be a fracturing fluid. The pre-hydrated friction reducer can provide an immediate reduction in friction to the treatment fluid as the treatment fluid is being pumped into the wellbore.