PrepTest 125, Section 1, Question 10

DetailDifficulty3 of 5
Passage 2Drilling-mud composition, uses and environmental effects
The questionFull text in your LawHub copy of PrepTest 125

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)

Each of the following is(9 more words not shown)

Reading the passage

Again, one account's support is enough to eliminate a choice. We know drillers monitor and reuse mud, recipes differ by drilling job, and discharges are regulated. But we should check what those regulations actually require rather than add a rule that sounds sensible.

Working the answers

  • A

    A describes monitoring the fluid's behavior and properties. B also says companies recycle water-based mud until its properties are no longer suitable. Both support checking suitability.

  • B
    Correct

    No requirement to disclose every ingredient is stated. A mentions secret formulations, and B describes controls on releases. Neither tells us that companies must give the government a complete ingredient list. Secrecy doesn't prove they never disclose anything to regulators; the disclosure requirement is simply unsupported.

  • C

    A's food and medical uses support safe human consumption in certain quantities. That limited claim doesn't say barite is harmless in every amount or mixture.

  • D

    A describes the drill bit cutting into rock while drilling for oil. That supports locating oil within or beneath rock, rather than merely importing general knowledge about geology.

  • E

    B distinguishes water-based mud for shallow parts of wells from oil-based mud for deeper drilling. That supports different recipes for those different jobs.

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