JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II PETROLEUM EXPLORATION METHODS Previous Question Paper (December - 2018 - R16)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What are different types of traps in hydrocarbon play system?
Answer
Hydrocarbon traps are broadly classified into structural traps (e.g., anticlines, fault traps), stratigraphic traps (e.g., unconformities, pinch-outs, reefs), and combination traps involving both structural and stratigraphic elements.
What are seal or cap rocks?
Answer
Seal or cap rocks are impermeable or low-permeability rock layers, such as shale, salt, or tight limestone, that overlie a reservoir rock. They prevent the upward migration of hydrocarbons, effectively trapping them within the reservoir.
What is a outcrop?
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Explain the need for foraminifera assemblage study.
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Name two types of gravimeters.
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State Newton’s law of gravity.
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Name the two receivers used in seismic survey.
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Name three energy sources for marine seismic survey.
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What is zero off set VSP?
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List any 3 demerits of Seismic refraction survey.
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Part B
Explain the present Scenario of petroleum exploration in India and world.
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What are the steps involved in geological survey for hydrocarbon exploration.
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What is the role of biostratigraphy?
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Write down the classification of sedimentary rocks.
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What is palynomorphs and its need for study?
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What is geological time scale?
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What is earth’s magnetic field?
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Explain with diagram optically pumped magnetometer.
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Explain with diagram working of Stable type gravimeter.
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Explain in detail about gravity survey for petroleum exploration.
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What is seismic refraction?
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What are the instruments used in seismic survey?
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With time distance curves explain critical distance and crossover distance in seismic survey.
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Explain in detail about non explosive sources used in seismic survey.
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What is weathering correction done for seismic survey? Derive its equation.
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Discuss the complete processing of seismic data processing.
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Discuss with diagram geometry of reflected ray path for single horizontal reflector. Also derive travel time equation for the same.
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How is 2D seismic data interpreted?
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