Updated from 2:52 p.m. EDTHalliburton ( HAL) has priced $2 billion worth of senior notes that the company said it will use for general corporate purposes. The Houston-based energy-services concern said late Tuesday that it will offer the senior notes in two tranches. The first $1 billion of 10.5-year notes will bear a fixed interest rate of 6.15% a year and will mature on Sept. 15, 2019. The second $1 billion tranche of 30.5-year notes bear a fixed interest rate of 7.45% a year and will mature on Sept. 15, 2039. Halliburton said it expects the offering to close on March 13. Shares of Halliburton ended lower by 3.6% at $15.77. Among other oil and gas equipment services companies, Schlumberger ( SLB) was down 1.8%, and Baker Hughes ( BHI) shed 1.9%.