JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III WELL COMPLETIONS Previous Question Paper (April - 2018 - 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
Write the types of wells.
Answer
Wells are primarily categorized into exploration wells, appraisal wells, and development wells (which include production and injection wells).
What do you understand by completions?
Answer
Completion is the process of making a well ready for production or injection after drilling is finished. It involves installing the necessary equipment, such as casing, tubing, packers, and wellhead assemblies, to establish a controlled flow path between the reservoir and the surface.
Define term “perforation”.
Answer
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Write the minimum value of perforation diameter.
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What do you understand by workover?
Answer
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Define term gas shutoff.
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Write the conventional work over system.
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Define term “nominal weight of pipe”.
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How to kill the well?
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Write the fishing tools.
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Part B
Define the well completion engineering and write the fundamental theory of well completion engineering.
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Explain open hole and cased hole completions with suitable diagram.
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What are parameters affects the completion design?
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Write the designing criteria for a successful completion.
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Discuss main parameters affecting the productivity of zone produced by perforating.
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Explain the tubing-conveyed perforating (TCP) method used in oil and gas fields.
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What do you understand by perforation tunnel? Describe perforating equipment used in oil and gas wells.
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Write the application of logging equipment used in cased hole.
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Explain the functions and applications of packers used in oil fields.
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Write the advantages and drawbacks of permanent packers.
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Explain hydraulically and mechanically retrievable packers.
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Illustrate subsurface controlled safety valve (SSCSV) and surface controlled subsurface safety valve (SCSSV).
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What are parameters considered in tubing string design? Also write the procedure of tubing string design.
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Write the procedure to running subsurface equipment in a well equipped with a permanent packer.
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Explain nominal diameter and nominal weight of pipe.
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Elaborate gas lift production tubing string with diagram.
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What are the reasons for performing workover job in oil and gas well.
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Write the principle and area of operation of wireline work.
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Describe the principle and equipment of coiled tubing system.
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What do you understand by snubbing? Write the principle and area of application of snubbing.
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