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All Journal Scientific Contribution Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI
B. Situmorang
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science

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GENERATION AND MATURATION OF HYDROCARBONS IN CEPU AREA, CENTRAL JAVA B. Situmorang; Ludin Tambunan
Scientific Contributions Oil and Gas Vol. 8 No. 1 (1985): SCOG
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.8.1.168

Abstract

Production from the Cepu area occurs from the Tuban and Kawengan Formations. Studies of organie richness and thermal maturity of thirty eight comventional core sanples from four wells penetrating the units by use of Rock-esal pyrolysis method reveal that a high total organic content (>0.30%) occurs in part of the Tuban Formation whereas a low total organie content (0.170.07%) is observed in the Kawengan Formation. Thermal maturity range is immature to maature with T-max ranging from 339°C to 435°C with the mature stage being confined to the Tuban Formation. The main kerogen type is structured kerogen (type III), with limited occurrence of unstructured kerogen (type II). Those results muggest that generution of gas occurred probably in the Tuban Fomation, vertically mi- grated and trapped at relatively shallow depths. It also implies that the more mature source-beds with marine kerogen could be found in the deeper sedimentary
PENAMPANG SEISMIK SINTETIK BERDASARKAN DATA BIOSTRATIGRAFI SUATU CONTOH DARI CEKUNGAN SUMATERA UTARA Retno Widiastuti; B. Situmorang
Lembaran Publikasi Minyak dan Gas Bumi Vol. 20 No. 3 (1986): LPMGB
Publisher : BBPMGB LEMIGAS

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Abstract

Dta biostratigrafi sejak lama telah digunakan, terutama untuk menentukan umur relatif dan lingkungan pengendapan batuan sedimen. Dengan mengubah umur relatf menjadi umur mutlak serta dengan memilih selang waktu tertentu, suatu penampang seimik sintetik melaui beberapa sumur dapat dibuat. Suatu contoh dari cekungan Sumatera Utara menujukkan, ketidakselarasan yang tidak teramati di lapangan terlihat dengan baik pada penampang seisimik sintetik, Variasi kecepatan sedimentasi dapat di amati lebih jelas, demikian pula runtuhan endapan-endapan transgresif dan regresif. Hal-hal itu akan sangat membantu dalam evaluasigologi detail suatu daerah.
Co-Authors Ludin Tambunan Retno Widiastuti Retno Widiastuti