Midstream transactions and equity notices were in full swing as 2013 drew to a close, rounding out an active year for acquisitions, divestitures, debt and equity.

In December’s largest midstream acquisition at press time, NGL Energy Partners completed its $890 million purchase of Gavilon LLC, which operates crude oil storage, terminal and pipeline assets in Oklahoma, Texas and Louisiana. It also has a crude oil and refined products supply, marketing and logistics business. Through that business, Gavilon leases a network of more than 200 trucks, 350 rail cars and eight barges. Its crude oil assets include a 50% interest in Glass Mountain Pipeline, as well as leased barrel storage and marine and truck terminals.

“Our employees and executive team are excited to join the NGL organization,” said Gavilon Chief Executive Greg Piper. “We have multiple organic projects in development and look forward to continuing to enhance and expand our energy footprint.”

The Glass Mountain Pipeline was scheduled to be operational in January.

In the energy industry as a whole, last year’s largest acquisition unfolded in the upstream in November with Devon Energy’s $6 billion acquisition of GeoSouthern Energy’s Eagle Ford assets.

The largest midstream deal in 2013 was Regency Energy Partners LP’s $5.6 billion acquisition of PVR Partners LP. That acquisition included the assumption of $1.8 billion in debt. The acquisition is expected to close in the first quarter.

Other major deals included Atlas Pipeline Partners LP’s $1 billion acquisition of TEAK Midstream; Kinder Morgan Energy Partners LP’s $5 billion acquisition of Copano Energy LLC; and Regency Energy Partner LP’s $1.5 billion acquisition of Southern Union Gathering Co. LLC.

The largest merger of 2013 happened when CenterPoint Energy Inc., OGE Energy Corp. and ArcLight Capital Partners LLC agreed to form a master limited partnership (MLP). Nearly $11 billion in assets were combined, including CenterPoint Energy’s interstate pipelines and field services businesses and the midstream business of Enogex LLC, owned by OGE and Arclight subsidiaries.

As well, Crestwood Midstream Partners LP, Inergy LP and Inergy Midstream LP teamed up to create a $7 billion midstream partnership.

Meantime, initial public offerings (IPOs) were plentiful last year. Most recently, Valero Energy Corp. launched a public offering which could net it up to $362 million. Earlier, Enable Midstream revealed plans recently to earn up to $500 million through an IPO. Also in November, Midcoast Energy raised $333 million with its IPO of 18.5 million shares at $18 each.