A centrifugal device, similar to a desander, used to remove very fine particles, or silt, from drilling fluid. This keeps the amount of solids in the fluid to the lowest possible level.
Instructions: Choose the best answer for each question.
1. What is the primary function of a desilter?
a) To remove large rocks and debris from drilling fluid. b) To separate water from drilling fluid. c) To remove very fine particles, or silt, from drilling fluid. d) To add chemicals to drilling fluid.
c) To remove very fine particles, or silt, from drilling fluid.
2. How does a desilter work?
a) By using a magnetic field to attract and remove silt. b) By filtering the drilling fluid through a fine mesh screen. c) By using centrifugal force to separate silt from the fluid. d) By chemically reacting with the silt to dissolve it.
c) By using centrifugal force to separate silt from the fluid.
3. What is the main benefit of using a desilter in drilling operations?
a) To increase the speed of drilling. b) To reduce the cost of drilling fluid. c) To prevent the formation of clogs in the drilling equipment. d) To improve the quality of the drilling fluid.
d) To improve the quality of the drilling fluid.
4. How does a desilter compare to a desander?
a) A desilter removes larger particles than a desander. b) A desander removes larger particles than a desilter. c) A desilter and a desander perform the same function. d) A desilter and a desander are used in different stages of drilling.
b) A desander removes larger particles than a desilter.
5. Which of the following is NOT a typical application for a desilter?
a) Oil and gas drilling b) Geothermal drilling c) Water well drilling d) Construction excavation
d) Construction excavation
Problem:
A drilling crew is experiencing problems with their drilling fluid, leading to reduced drilling efficiency and potential equipment damage. Analysis reveals an excessive amount of silt in the fluid. They need to implement a solution to remove this silt.
Task:
**1. Identify the appropriate equipment:** A desilter. **2. Explain the reasoning:** Desilters are specifically designed to remove very fine particles like silt from drilling fluid. This is crucial for improving the quality of the fluid and preventing issues caused by excessive solids. **3. Outline the steps:** * The drilling fluid is pumped into the desilter. * The desilter uses centrifugal force to separate the silt from the fluid. * The cleaned fluid is then returned to the drilling operation. * The collected silt can be disposed of or processed further.
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