CEMENTING1. Which of the following are correct for the primary functions of Cementing:I. To provide zone isolationII. Support axial load of casing stringIII. Protection against corrosive fluidsIV. Sealing off lost circulation or thief zonesA. I,II and IIIB. II,III and IVC. I,III and IVD. All of these.

2. In the cement manufacturing process, feed is heated to a temperature around 2600-2800 oF resulting in a material called clinker. Which of the following does NOT consist of clinker:A. C2SB. C3SC. C4SD. C4AF

3. Which of the following is added to the Portland cement to control the setting and hardening properties of cement and to prevent the flash setting of the cement:A. Barite B. GypsumC. BentoniteD. Lignosulphonates

4. Which of the following is NOT a cement additive:A. AcceleratorsB. ExtendersC. ClinkersD. Dispersants

5. What is the correct order of the cement additives to be matched from the given examples:A. HaematiteB. Cationic polymerC. LignosulphonatesD. Sodium chlorideE. Bentonite

I. Accelerators II. RetardersIII. ExtendersIV. Weighting agentsV. Fluid loss additivesA. B,D,A,C and EB. B,D,E,A and CC. D,C,E,A, and BD. D,C,B, A and E

6. In the slurry testing, Thickening time tests are designed to determine:I. Time required by the slurry to set at the desired depthII. Time upto which cement slurry remains in a pumpable stateIII. Time to reach 70 Bc (Bearden Consistency)IV. Time to reach 65 Bc (Bearden Consistency)A. I and IIIB. II and IIIC. I and IVD. II and IV

7. WOC stands for:A. Weight on cementB. Waiting on cementC. Water on cementD. Wasting of cement

8. Arrange the following in the correct order of cementing process:a. Release wiper plug( Bottom plug)b. Pump spacerc. Pressure test the casingd. Pump cemente. Circulate the casing and annulus clean with mud f. Release shut-off plugg. Displace with displacing fluid (generally mud) until the shut-off plug lands onthe float collar

A. e,f,b,d,a,g, and cB. e,a,b,d,f,g, and cC. c,a,d,b,f,g, and eD. c,f,d,b,a,g, and e

9. Stringer cement job is a technique performed:A. To isolate a zone prior to perforation for productionB. To repair casing leaksC. To abandon a non-productive or depleted zoneD. To cement the casing through a tubing or drillpipe string rather than through the casing.

10. Which of the following are NOT casing and cementing hardware?A. Guide shoes and float collarsB. Washes and spacersC. Baskets and centralizersD. Top and bottom plug

11. During cementing, when the top plug lands on the bottom plug, it is called Bumping of plug. How is it detected?A. By increase in pumping rateB. By decrease in pumping rateC. By increase in pressure at the surfaceD. By decrease in pressure at the surface

12. Determine the slurry density and slurry yield for the given class G cement 45% fresh water?ComponentWeight(lb)Volume(gals)

Cement943.59

Water42.35.08

A. 15.72 lb/gal and 1.16 ft3/sackB. 15.72 lb/gal and 2.32 ft3/sackC. 31.44 lb/gal and 1.16 ft3/sackD. 31.44 lb/gal and 2.32 ft3/sack

13. Which of the following is NOT used to evaluate the quality of the cement and the bond between the cement and the casing:A. Cement bond logB. Variable density logC. Ultrasonic borehole imagingD. Induction logging

14. Which of the following have unlimited setting time :A. Gypsum cementB. Diesel oil cementC. Portland cementD. Class H cement

15. Which of the following is incorrect?A. Multi stage cementing is used to reduce total hydrostatic pressure of cement on weak formations.B. Cement plug is used to provide a seal for open hole testing.C. Squeeze cementing is a secondary cementing method in which cement is pumped at low pressures to provide a seal across an undesired gap.D. CBL-VDL tools are used to evaluate the quality of the cement and the bond between the cement and the casing.

16. Which of the following is not a Retarder (chemicals which increase the setting time of a slurry)?A. Hydrocarboxylic acidsB. Calcium chlorideC. LignosulphonatesD. Sugar

17. The normal unit volume for cement is 1 sack which corresponds to _______ lbs of weight occupying a packed volume of 1 cubic foot.A. 90B. 92C. 94D. 96

18. Which of the following is incorrect for the Latex cement?

A. Composed of latex, cement and water.B. Used for plug back jobs for water exclusion.C. Especially resistant to oil and mud contamination.D. Gives low strength bond with casing and rocks.

19. Which of the following is the Correct statement for slurry density?A. Density is measured using Consistometer.B. One sack cement equals 92 lbs and measure 1 cu. Ft.C. Density should be the same as mud to minimize the risk or blowouts orlost circulation.D. Density increases by adding bentonite, pozzolan and gilsonite.

20. Shoe track is defined as the distance between theA. Shoe and Top plugB. Shoe and centraliserC. Shoe and Bottom plugD. Shoe and float collar