They are clearly positioning for a pull back in crude oil prices over the next three months, or sooner. The buyer of a put option estimates that the underlying asset will drop below the exercise price before the expiration date.
there are several options you can take if you are expecting PPS is going down in future: 1. buy PUT options - the rights to sell a stock at a given price within a period 2. sell CALL options - the rights to buy a stock at a given price within a period 3. buy a BEAR ETF such as DDG(1x), DUG(2x) or ERY(3x) see #board-14525