Petroleum Engineering Sample Questions 3t1o4c

1. What do roughnecks do on the rig? Hard manual labour. 2. Who are the supervisors of the drilling rig? Rig manager 3. Who is the supervisor for both the driller and… Drilling engineer

4. What casing is used to prevent the unconsolidated formation from caving in Conductor casing 5. How does the yield strength of structure of………

6. How does the thickness of drill pipe….

7. What are five major components of the Draw works,block and tackle,crown block,derrick and substructure, 8. Q 9. Q 10. Q 11. Q 12. Q 13. list two functions of a packer:  Prevent downhole movement of the tubing string  some of the weight of the tubing 14. list two factors that affect a completion design Packers ,Elastomers, Flow control equipment 15.

what is the function of perforation

16. with respect to stimulation briefly describe the process of acidizing acidizing is performed below the reservoir fracture pressure in an effort to restore the natural permeability of the reservoir rock 17.

list two limitations and advantages of openhole completions

Adv- lower intial cost, max reservoir exposure Dis- minimal inflow and outflow control, more difficuilt stimulations 18. Apart from hydraulic fracturing list two other types of fracturing techniques used in stimulation of a well matrix acidizing and fracture acidizing. 19.

Remedial work to primary cementing job is called….

20. the

Given that a reservoir exists above the bubble point pressure for

21. hydrocarbon and also only water and hydrocarbon is present.give an equation that will represent fluid saturation in the reservoir

22.

list two factors that can affect the values of porosity

Rate of Burial and Depth of Burial 23.

How does overburden pressure affect the value of k?

Overburden pressure can reduce the value of k 24.

What is effective porosity

Refers to the fraction of that volume in which fluid flow is effectively taking place 25.

Which of the following is relative permeability?

Relative permeability is defined as the ratio of the efffective permeability of a fluid at a given value of saturation to the effective permeability of that fluid at 100% saturation 26. what is connate water saturation and what are the properties of water that cause it to wet/adhere to the surface of the rock?

27. what information can be attained from the relative permeability curve? Rwo,Rto, Water satuation. 28. Q 29. Given that a rock has a volume of 1000cm3 and its porosity value is 20% Calculate the space of this rock in m3. .2m 30. define a wet gas making reference to the stock tank conditions A wet gas has a GOR <5000scf 31.

Define the term renewable energy

Renewable energy is generally defined as energy that comes from resources which are continually replenished on a human timescale such as sunlight, wind, rain, tides, waves

32. define bo – oil formation volume factor 33. using the ooip how can one calculate the GORs (solution gas oil ratio)? OGIP= OOIP-(GOR)s 34. With respect to enhanced oil recovery inb particular thermal recovery what is one principal function of this method? 35. What must be present for a gas cap drive and a water drive to be considered as primary recovery? Gas drive recovery ………………………….. water drive ………………………………

36. Reserves are calculated based on degrees of uncertainty What are the two sets of data: Geological data,engineering data 37. Define the term bg (gas formation volume factor The volume of gas at reservoir conditions of oil at stp 38. Define the term non-renewable resources Resources in which the rate of use is faster than rate of formation 39. When would enhanced oil recovery be applied to a reservoir Employed when reservoir pressures are not sufficient to bring hydrocarbons to surface 40. What are two types of thermal recovery methods employed Fire flooding,steam flooding 41. What is the location of where the first contracted agreement for susbsurface hydrocarbon in the us Titusville 42. What was the name of the person contracted -Colonel Edwin Drake 43. In your own words define the petroleum industry 44. Q 45. Q 46. Specific gravity is given by the formula API = 141.5/131.5 – 1 True or false (true) learn formula 47. What are the two pathways to the maturation of hydrocarbons : diagenesis,kerogen 48. List the three basic requirements for the formation of a reservoir: source rock, reservoir rock, trap rock or seal rock 49. List four pieces of evidence to why geology is important to the petroleum industry: 50.

FILL IN THE GAPS:

1. Why is it better to produce from a reservoir that has water wet rock than one that has oil wet rock. Because oil won't adhere to rocks with results in more oil within the reservoir. 2. What is liquid loading? Once Flowrate drops below a certain rate, the well will begin to load up The amount of liquid produced does influence how quickly the subsequent loading up process takes

3.

Briefly describe method of acidizing

acidizing is achieved by pumping acid into the well to dissolve limestone, dolomite and calcite cement between the sediment grains of the reservoir rocks

4. What are two problems that affect drilling a well-Multiple choice 4 choices 5. What is the drilling fluid in wells normally called Drilling Mud 6. Give two functions of cementing Restrict fluid movement between formations & Bond and casing 7. What are two things that can be done to optimize drilling:Rate of penetration,Type of bit,Weight on bit,Rotating speed 8. Explain what is a work over refers to any kind of oil well intervention involving invasive techniques, such as wireline, coiled tubing or snubbing 9. How does the drilling company get the contract –