Progress has been made recently in developing domestic gas production. In North Vietnam the Thai Binh gas project produced first gas on 7 August 2015. In Southeast Vietnam the first phase of the Nam Con Son 2 pipeline was completed in December 2015 transporting gas from the Dai Hung field. In Southwest Vietnam PetroVietnam started construction on Block B&52 in December 2015. However the incremental production is insufficient to offset the decline from existing blocks particularly from the Lan Tay and Lan Do fields in South Vietnam.