Halliburton Co., under scrutiny for its involvement with the Deepwater Horizon oil rig, has hired Patton Boggs to help it respond to investigations on Capitol Hill.

In a statement, the Washington-based law firm said it is providing legal counsel to Halliburton and is not lobbying in connection with the investigations. That likely means the firm’s lawyers will have little or no contact with lawmakers, but they could assist Halliburton in responding to requests for documents or in preparing for testimony.

“The firm is representing Halliburton in the capacity of lawyers as Halliburton responds to multiple ongoing Congressional investigations,” the statement reads. “The firm is not acting as a lobbyist in any of these investigations.”

Patton Boggs is one of the capital’s highest-grossing lobbying firms, ranking No. 2 in the most-recent Influence 50.

Jeffrey Turner, a partner and co-chair of the firm’s public policy practice, will lead the firm’s representation of Halliburton, a spokeswoman confirmed. He has experience with deep-water exploration and production issues in the Gulf of Mexico, having represented an industry coalition that favors offshore drilling.

Halliburton has said that four of its employees were on the Deepwater Horizon rig at the time of a last month’s accident. All survived. The company said it performed a variety of services on the rig, including cementing the well pipe to prevent leaks.

James Ferguson, Halliburton’s vice president and deputy general counsel, is scheduled to testify Thursday before the House Judiciary Committee.

David Ingram can be contacted at dingram@alm.com. Carrie Levine can be contacted at clevine@alm.com.