Natural Gas Systems Flashcards
6 cards from real Energy and Utilities practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Natural Gas Systems flashcards as text
What is 'hydraulic fracturing' (fracking) used to extract in the US energy industry?
Answer: Coalbed methane and shale gas/oil
Hydraulic fracturing injects high-pressure fluid to crack tight rock formations and release trapped natural gas or oil.
What is the function of a gas chromatograph at a pipeline custody transfer point?
Answer: Analyze gas composition to calculate heating value for billing
Gas chromatographs separate and measure gas components to determine the energy content for accurate commercial measurement at transfer points.
Which class designation indicates a natural gas pipeline segment in a densely populated area under US regulations?
Answer: Class 4
Class 4 locations under 49 CFR Part 192 are areas with multi-story buildings and require the highest pipeline safety standards.
What is a natural gas 'pig' used for in pipeline operations?
Answer: Cleaning, inspecting, or separating products inside the pipeline
Pipeline inspection gauges (PIGs) travel through pipelines driven by gas pressure to clean debris, remove liquids, or detect defects.
What does 'wellhead price' refer to in natural gas markets?
Answer: The price of gas at the point of production before transportation
Wellhead price is the value of natural gas at the production site before any gathering, processing, or transportation costs are added.
What is a 'city gate' in natural gas distribution?
Answer: The point where a local distribution company receives gas from a transmission pipeline
The city gate is the metering and pressure reduction point where a local distribution company (LDC) takes delivery from the interstate pipeline.