It was a pretty quiet week in the energy sector, as first-quarter earnings have drawn to a close. However, that didn't stop three companies, SandRidge Energy (UNKNOWN:SD.DL), Williams Partners LP (NYSE:WPZ), and Rosetta Resources (UNKNOWN:ROSE.DL), from making moves of 20%, or more, during the week.

Two of the three stocks making big moves this week did so because they agreed to a merger deal. To learn more about those deals, as well as what drove this week's other big energy movers, check out the slideshow below.

Matt DiLallo owns shares of SandRidge Energy. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.