PrepTest 125, Section 1, Question 11
Passage A Drilling fluids, including the various mixtures(466 more words not shown)
Passage A(240 more words not shown)
Passage B(234 more words not shown)
Based on information in the(28 more words not shown)
- AThe cost of(14 more words not shown)
- BThe deeper an(17 more words not shown)
- COil reserves at(14 more words not shown)
- DIt is unlikely(22 more words not shown)
- EBarite is a(9 more words not shown)
Reading the passage
When do drillers normally use oil-based mud? In deeper wells. So the strongest support for an increased share of drilling using it would be a shift toward deeper drilling. The question is about the proportion using oil-based mud, not simply more drilling or more mud overall.
Working the answers
- A
Higher prices for water-based ingredients might matter, but we don't know how they change the relative cost of the two types. Some ingredients could be shared, and this doesn't establish a shift toward the jobs that normally use oil-based mud.
- B
This describes what a deeper well needs. It doesn't show that deeper wells will account for more future drilling.
- CCorrect
If shallow reserves are largely exhausted and future drilling must reach deeper reserves, more of the work will involve the conditions in which B says oil-based mud is normally used. That directly matches our prediction.
- D
A lack of improvement in removing residues doesn't explain an increasing proportion of drilling using oil-based mud. It concerns waste handling, not a reason to choose more of this type.
- E
Barite's abundance doesn't favor oil-based mud over water-based mud. A treats barite as an ingredient of drilling mud generally, so availability alone doesn't establish the requested shift.
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