If you are wondering how drilling fluids work, you will be pleased to know that this article will help you to understand this vital process. Drilling fluids are created in several ways. Listed below are the main components of a drilling fluid. These components are called Alkalinity, Dispersion, Clarity, and Gel strength. To choose the best drilling fluid for a given application, you need to know their characteristics and properties.
Alkalinity
The pH PAPER is a method for measuring the acidity or alkalinity of drilling fluids. This test is inaccurate because of organic materials in the fluid. Simple bentonite-based systems are not treated with organic thinners. AMC has a solution for this problem: The MODULAR SOLIDS REMOVAL UNIT (SRU), which is an innovative alternative to fluid sumps. The MODULAR SRU is highly beneficial to safety and health and delivers substantial cost savings for drilling companies.
Dispersion
The process of drilling requires the dispersion of various kinds of drilling fluids in order to control the amount of formation fluids in the well. Most of the drilling muds are thixotropic, meaning that they increase their viscosity in static conditions, keeping cuttings suspended. The speed at which the drilling fluid travels up the well also determines how efficiently cuttings are transported. The ability of drilling fluid to carry cuttings is analogous to the capacity of a stream to carry sediment. Large grains of sand settle to the stream bed, while small grains float upstream. Another important property of drilling fluids is viscosity, which is an indicator of how well the drilling fluid will carry cuttings. High viscosity fluids will sink to the bottom of the hole, while low-viscosity fluids will be carried upstream, Check out this site.
Clarity
There are many factors involved in the design and maintenance of drilling fluids. From simple compositions of water and clay to complex inhibitive systems that have many components, drilling fluids have evolved significantly since their humble beginnings. Engineers and scientists continue to improve these systems and continue to develop new ways to monitor and simulate their performance. Clarity and other properties of drilling fluids are among the factors that engineers and scientists continue to study. Using sensors and other tools, engineers can determine the clarity and properties of drilling fluids.
Gel strength
To determine the viscosity of drilling fluids, a Marsh funnel is used. The gel strength of a drilling fluid is the shear stress at a low shear rate measured after the mud has set for 10 seconds. After 10 minutes, 30 minutes, and 16 hours, the gel strength of drilling fluid can be measured again. The Marsh funnel contains a small bore tube and a screen on top. When mud is poured into the funnel, the speed is reduced to three rpm. The sample is then measured at this speed.
Conclusion:
A reservoir’s permeability is strongly affected by the permeability of its near-wellbore area, and therefore, the amount of oil and gas produced from it is directly related to the amount of formation damage. The permeability of reservoirs is also negatively affected by drilling fluids that alter the fluid properties. The ability to exploit a reservoir’s potential reserves is greatly compromised by any reduction in permeability. Therefore, reservoir engineers must be very vigilant about the potential for formation damage and know how to prevent or minimize its effects.
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