Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech IV RESERVOIR STIMULATION Previous Question Paper (July - 2019 - R15)
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 do you mean by In-Situ Stress?
Answer
In-situ stress refers to the natural, pre-existing state of stress within a rock formation at a specific depth, resulting from the weight of the overlying strata (overburden), tectonic forces, and pore fluid pressure.
Define the term “infinite acting reservoir”
Answer
An infinite acting reservoir is a condition where the pressure transient generated by a well test has not yet reached the reservoir boundaries, meaning the reservoir behaves as if it extends infinitely in all directions from the wellbore.
Define the law of conservation of mass.
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What is difference between water base and oil base fluid?
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Define power law model?
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What is difference between rheometer and viscometer?
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What is perforation?
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What is postflush?
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What do you understand by term “fluid loss”?
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List the bottom hole parameters of the reservoir.
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Part B
Derive an equation of diffusivity for a well producing at constant rate in an infinite acting reservoir.
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Briefly explain the differential strain curve analysis.
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What is skin factor? Write the parameters affecting the skin factor.
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Briefly discuss the parameters considered in fracturing fluid flow modeling.
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What is fracturing fluid and how to develop in the laboratory?
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Write the types of fracturing fluid. What are the chemicals required to develop a fracturing fluid?
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What are the parameters considered to prepare a fracturing fluid?
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Briefly explain the fluid loss under static and flow conditions.
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Briefly explain the physical properties of proppants used in fracturing fluid.
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Which type of data needed prior to the preparation of the stimulation treatment design.
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Derive a material balance equation during pumping and closure for stimulation treatment.
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What are techniques are available to measure the fracture height? Explain one of them.
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Discuss the parameters required to design a matrix acidizing job.
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Write the selection criteria of fluid for matrix acidizing.
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Discuss the effects of perforations on fracture execution and evaluation of a fracturing treatment.
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Briefly explain the fluid placement techniques in sandstone acidizing job.
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Discuss the factors controlling the effectiveness of acid fracturing treatments.
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What are the parameters affecting the acid fracturing treatment?
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What is acid fracturing job? Compare acid fracturing with fracturing with propping agent.
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