Private equity deals

Fieldwood Energy LLC, a Houston-based portfolio company of Riverstone Holdings, has acquiredApache Corp.’s (NYSE: APA) Gulf of Mexico Shelf business for $3.75 billion. The purchase represents more than 1.9 million net acres, with Fieldwood hoping to retain “substantially” all of the current employees. www.apachecorp.com

Bain Capital and Altor have raised their offer for the fish feed business of Norwegian salmon farmerCermaq (Olso: CEQ), from 6.2 billion crowns to 6.5 billion crowns ($1.08b), topping a rival offer fromPermirawww.cermaq.com

Bain Capital
 has agreed to acquire 80% of blood plasma business Plasma Resources UK from the British government for up to £200 million. The deal includes a £90 million upfront payment, £110 million over the next five years and an additional £50 million investment into the business.www.baincapital.com

Creme Mel Sorvetes
, a Brazilian ice cream company, has raised an undisclosed amount of private equity funding from H.I.G. Capitalwww.crememel.com.br

Providence Equity Partners has agreed to acquire five corporate training businesses from Informa PLC (LSE: INF) for $165 million (including a $65 million vendor loan). www.provequity.com

Sign up for our daily email newsletter on deals and deal-makers: GetTermSheet.com