Chevron-Led Kazakh Oil Venture Plans $6 Billion Drilling Program

    By Nariman Gizitdinov     Chevron Corp.’s Kazakh oil venture plans to spend $5 billion to $6 billion in the next five years drilling at Tengiz, the Central Asian country’s biggest producing field,to sustain output.     The TengizChevroil LLP venture will invest $1 billion of that amount to drill three to four wells this year,...