Exercise 11 Cement Pump Hydraulics

Exercise 11 Cement Pump Hydraulics - MEMO Lab 11 Cement...

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MEMO Lab 11 Cement Hydraulics TO: District Engineer FROM: Student Name MEMO form +0.5 pt RE: General Well Planning Recommendations: Due to pump rate limits on the cementing unit, critical (turbulent) flow cannot be achieved while pumping the cement slurry. It can be achieved while pumping the mud flush. This is viewed as a very beneficial result because the mud flush should be capable of displacing the majority of the mud cake in the interval to be cemented. As shown in Table 5 below, the job can be performed within the limits of the equipment on site. It should be noted that the casing will be on a vacuum at the end of pumping cement due to the heavy density of the cement inside the casing relative to the lighter density fluids in the annulus. At the end of the job, surface pressure will increase dramatically as the heavy cement is displaced outside the casing by fresh water. Pump Pump Pump Job Stage Rate Pressure Power (GPM) (psi) (hp) circulate with mud 278 354 57.5 cement inside casing 278 0 0 cement outside, water inside 420 3349 544 A discussion similar to this must be presented in the recommendations section. +4 pts Discussion: The “average” well we will plan in the annual budget will be 10,000’ deep and will seal the bottom 5000’ using the lowest water loss slurry. Using the data from Table 1, this slurry is the Class H cement with 0.6% Halad 344, mixed at 15.8 ppg. The top 5000’ will be left full of drilling fluid.
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This note was uploaded on 02/13/2012 for the course PGE 430 taught by Professor Chenevert during the Spring '06 term at University of Texas.

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Exercise 11 Cement Pump Hydraulics - MEMO Lab 11 Cement...

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