Analisis pengembangan sistem kelistrikan untuk fasilitas gas lift compressor pada fasilitas eksplorasi minyak dan gas bumi = Analysis of development of electrical systems at gas lift compressors in oil and gas exploration facilities.

Perencanaan pengembangan dan analisa keekonomian lapangan gas x di Provinsi Sumatra Utara = Plan of development and economic analysis of x field in North Sumatra Province / Eko Prehantoro

Analisis tekno ekonomi pemanfaatan stranded sumur gas X di perusahaan Y = Techno economic analysis of utilization stranded gas well X at company Y / Dumadi Ferianto

Desain teknis dan analisis keekonomian pengembangan jaringan pipa distribusi gas alam milik PT X di Wilayah Kabupaten Tangerang = Technical design and economic analysis for development of natural gas distribution pipeline owned PT X in Kabupaten Tangerang region

Analisa keekonomian pembangunan jaringan gas di kota Surabaya dan Kabupaten Sidoarjo = Economic analysis of city gas network in Surabaya and Sidoarjo