• Seitel Inc., Houston, (OTCBB: SELA) will be acquired by investment firm ValueAct Capital, San Francisco and Boston, and its affiliates for $3.70 per Seitel share in a deal valued at approximately $780 million, including $189 million in assumed debt.

Seitel provides seismic data and geophysical services. ValueAct Capital already owns approximately 39% of Seitel. William Blair & Co. is financial advisor to Seitel.



• Allis-Chalmers Energy Inc., Houston, (Amex: ALY) plans to acquire substantially all the assets of Oil & Gas Rental Services Inc., Morgan City, La., for $291 million in cash and 3.2 million shares valued at approximately $15.97 each in a total deal value of $342.1 million.

Oil & Gas Rental Services provides rental tools to offshore and onshore E&P companies in Morgan City, La., and Victoria, Texas, and internationally in Malaysia, Colombia, Russia, Mexico and Canada.

Allis-Chalmers chairman and chief executive Micki Hidayatallah says, "The acquisition definitely improves our offshore presence." RBC Capital Markets is financial advisor to Allis-Chalmers and Simmons & Co. International is financial advisor to Oil & Gas Rental Services.



• A Canadian subsidiary of National Oilwell Varco Inc., Houston, (NYSE: NOV) has acquired most shares of NQL Energy Services Inc., Calgary, (Toronto: NQL) for C$7.60 each in a total deal valued at C$345 million if all shares are tendered. NQL provides downhole tools, technology and services worldwide.

National Oilwell Varco chairman, president and chief executive Pete Miller says, "We expect to enhance further NQL's already-high service and support levels by providing it opportunities to grow through (our) extensive international infrastructure."

Peters & Co. Ltd. is financial advisor to NQL Energy Services.



• Complete Production Services Inc., Houston, (NYSE: CPX) has acquired privately held Pumpco Services Inc., Gainesville, Texas, for $157.5 million in cash and approximately 1 million Complete shares valued at approximately $21.3 million for a total deal value of $208.8 million, including $30 million in assumed debt.

Pumpco provides pressure-pumping services in the Barnett Shale. UBS Investment Bank was financial advisor to Pumpco.



• A Hercules Offshore Inc., Houston, (Nasdaq: HERO) subsidiary has acquired eight liftboats and assumed rights to operate five additional ones from Halliburton West Africa Ltd. and Halliburton Energy Services Nigeria Ltd., subsidiaries of Halliburton Co., Houston, (NYSE: HAL) for US$50 million. The liftboats are operating offshore Nigeria and Cameroon. Parks Paton Hoepfl & Brown was financial advisor to Halliburton.



• Lone Star Technologies Inc., Dallas, (NYSE: LSS) plans to acquire 50% of Apolo Mecanica e Estruturas Ltda., an oilfield-tubulars firm in southeastern Brazil, for approximately $42 million.



• Omni Energy Services Corp., Carencro, La., (Nasdaq: OMNI) plans to acquire privately owned Charles Holston Inc., Jennings, La., for $23 million in cash and promissory notes. The company provides environmental and other services.

Separately, Omni has acquired Youngsville, La.-based Rig Tools Inc. for approximately $16.1 million, including $10 million in cash, $4 million in promissory notes and approximately $2.1 million in assumed debt. Rig Tools supplies land-based drilling contractors primarily in Louisiana and Texas.



• Flotek Industries Inc., Houston, (Amex: FTK) plans to acquire Triumph Drilling Tools Inc. from Teal Supply Co., Corpus Christi, Texas, for $31 million. Triumph provides downhole rental equipment and drilling tools in Texas, New Mexico, Louisiana, Oklahoma and Arkansas. Morgan Keegan & Co. Inc. is financial advisor to Triumph.



• Cetco Oilfield Services Co., a subsidiary of Amcol International Corp., Arlington Heights, Ill., (NYSE: ACO) has acquired the assets of Nitrogen Specialty Co., Harvey, La., for $33.7 million in cash. Nitrogen Specialty has operations in Texas and Louisiana.



• Stallion Oilfield Services Ltd., Houston, has acquired Erlandson Construction Co. Inc., Gainesville, Texas, and G&N Rentals, Bowman, N.D. Erlandson provides wellsite-construction services in the Fort Worth Basin. G&N provides surface rental equipment in North Dakota and Montana.



• Enventure Global Technology, Houston, has acquired Houston-based Triad Pipe & Steel Co., for an undisclosed price. Triad provides specialty oil-country tubular goods. Enventure provides expandable tubulars and drilling management worldwide. Stoneworth Financial was financial advisor to Enventure.



• Infinity Energy Resources Inc., Denver, (Nasdaq: IFNY) plans to sell its Consolidated Oil Well Services Inc. and CIS-Oklahoma Inc. subsidiaries to a privately held company. Infinity will use the proceeds to pay debt.

Stanton E. Ross, chief executive of Infinity, says the sale will help Infinity to more effectively proceed with exploitation of its Barnett Shale and Rockies E&P assets.



• National Oilwell Varco Inc., Houston, (NYSE: NOV) has acquired the operating assets of Conroe, Texas-based Rolligon Ltd. for an undisclosed price. Rolligon fabricates completion and well-servicing equipment.



• Rentech Inc., Los Angeles, (Amex: RTK) has sold subsidiary Petroleum Mud Logging, Oklahoma City, to privately held PML Exploration Services LLC for about $5.4 million in cash.



• Avalon Oil and Gas Inc., Minneapolis, (OTCBB: AOGS) has acquired Intelli-Well Technologies Inc., a subsidiary of Utek Corp., Tampa, Fla., (Amex, London: UTK) for an undisclosed amount of stock. Intelli-Well holds a license for a borehole casing technology developed by the Lawrence Livermore National Laboratory.



• Production Enhancement Group Inc., Houston, (Toronto: WIS) plans to acquire Alberta-based Dynastar Energy Services Ltd., a provider of coiled-tubing services in Alberta.



• The Mullen Group Income Fund, Calgary, (Toronto: MTL.UN) has acquired privately owned, Halbrite, Saskatchewan-based Carl Brady Trucking Ltd. and Brady Sand & Gravel Ltd. for an undisclosed price.



• Sondex Plc, London, (London: SDX) has canceled its acquisition of Innicor Subsurface Technologies Inc., Calgary, (Toronto: IST) for C$3.75 per Innicor share, for a deal that had a total value of approximately C$72.8 million (US$65.5 million). Sondex reports that Innicor's value decreased since the deal was announced.