D - Wait until the reservoir pressure increases and displaces the pump with fluid
PTPR 6010_Emulsions and Treatment
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Question 1: When obtaining a representative sample of liquid for determining BS&W, the sample should: A - Be allowed to age and settle out B - Be taken as close to the test meter as possible C - Be taken as far as possible from the test meter D - Not be heated to treater operating temperature before spinning ______________________________________________
Question 2: For samples where the B S & W is in the range of 80 to 100%, the oil portion of the samples does not have to be spun, due to the limited amount of the oil portion of the sample available. A - True B - False _______________________________________________
Question 3: When conducting a bottle test, you need to ensure that the sample used be: A - Representative of the past 48-hours of flow B - As fresh as possible C - At least 12 hours old D - Aged 24 hours before testing _______________________________________________
Question 4: The film of emusifying agent that surrounds the water in an emulsion of water-in-oil tends to prevent the joining of the water droplets. A - True B - False _______________________________________________
Question 5: When taking 0 to 10% BS&W samples with 200 mL centrifuge tubes, the water-cut is determined by: A - Adding the readings of both tubes together. B - Recording the reading from the tube with the highest reading. C - Reading the results directly from one tube. D - Recording the reading from the tube with the lowest reading. _______________________________________________
Question 6: For samples where the BS&W is in the range of 10 to 80% BS&W, the free water percentage is calculated as: A - Percentage of free water = (Volume of free water / Total volume) x 100% B - Percentage of free water = (Volume of solvent / Total volume) x 100% C - Percentage of free water = (Volume of solution / Total volume) x 100% D - Percentage of free water = (Volume of oil / Total volume) x 100% _______________________________________________
Question 7: A commonly used solvent in a water-cut (BS&W) testing procedure is:
A - Varsol B - Kerosene C - Gasoline D - Methanol _______________________________________________
Question 8: To break down a petroleum emulsion, the properties of the emulsifying agent must be:
A - Negated B - Destroyed C - Neutralized D - Both destroyed and neutralized _______________________________________________
Question 9: The theory that very small droplets formed in an emulsion are in constant motion is known as: A - Bernoulli's Principle B - Charles' Law C - Bohr Model D - Brownian Movement _______________________________________________
Question 10: In addition to the equipment used in the B S & W test, all of the following pieces of equipment are required to perform a bottle test except: A - A hydrometer B - One graduated 2 mL syringe C - Demulsifying compounds D - A water bath, with thermostatic control _______________________________________________
Question 11: One theory regarding the effect that chemical reagents have on emulsions assumes that the chemical makes the film of emulsifying agent elastic, around the water droplet, and causes the film to have a very high coefficient of expansion.
A - True B - False _______________________________________________
Question 12: When preparing a 2% solution of treating compound, a choice of solvent must be made. Although it has been used, kerosene is not recommended because:
A - It must be cut with up to 25% methanol B - In warm weather, it is too volatile C - A large number of demulsifying agents are insoluble in it D - In cold weather, the solution may crystallize _______________________________________________
Question 13: You apply a treatment to break up an emulsion. It causes the emulsion particles to line up along lines of force, allowing the water droplets to join together and settle out. The type of treatment you are using is: A - Radioactive B - Chemical C - Heat D - Electricity _______________________________________________
Question 14: When performing a bottle test, the sample should be:
A - Grabbed with the sample valve wide open in order to allow accumulated gas to escape B - As close as possible to lease conditions of agitation and heating C - Aged several hours before testing so the emulsion becomes more stable D - Caught from a sample point downstream of the point of chemical injection _______________________________________________
Question 15: When taking 0 to 10% BS&W samples with 100 mL centrifuge tubes, the water-cut is determined by:
A - Recording the reading from the tube with the highest reading B - Recording the difference in readings between the two tubes C - Adding the readings of both tubes together D - Recording the reading from the tube with the lowest reading
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Question 16:
After the bottle test has been made, the chemical pump is adjusted until it adds chemical in the ratio indicated by the bottle test. If the bottle test indicated one chemical to be added at the rate of 0.6 mL of 2% solution per 100 mL of emulsion, that has to be expressed in terms of litres of chemical and cubic metres of emulsion. In operating conditions at the lease, that ratio would equal:
