Exercise 7 - Low Solids and Penetration Rate

Exercise 7 - Low Solids and Penetration Rate - PGE 430 Lab...

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PGE 430 Lab Exercise 7 To: Drilling Manager From: Student Name Date: TA Version – memo style +0.5 Re: Slow rate of penetration _______________________________________________________________________ _ You have asked me to compare two low solids mud types to the bentonite mud we have been using and to recommend the mud to use to give us the best penetration rate. My recommendations and a discussion are shown below. Recommendations: I recommend that we continue to use the bentonite mud shown as mud A in the data. Using a drilling rate correlation from Eckel the low solids mud types do not exhibit any better tendency for faster drilling rate than the bentonite mud. Conclusions along these lines +3.0 Depending on the curve fit, it may be possible to recommend mud C. If this is done, the student should receive full credit. Under no circumstance is mud B to be recommended because, as shown below, Figure 2.30 shows mud B to have an unacceptable plastic viscosity. Discussion: Alpha Mud Co. has provided pilot tests for three mud types. This data is attached. Mud A is the 20 lb/bbl bentonite mud we have been using. Mud B is a 10 lb/bbl bentonite mud with a clay extender called Gelex. Mud C is a 10 lb/bbl bentonite mud with a polymer. A comparison of the pilot test data to Figures 2.30 and 2.31 in the reference shows that
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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 at Austin.

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Exercise 7 - Low Solids and Penetration Rate - PGE 430 Lab...

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