All issues
Volume 63 (1998)
- Issue 6 Pages 467-
- Issue 5 Pages 369-
- Issue 4 Pages 275-
- Issue 3 Pages 205-
- Issue 2 Pages 105-
- Issue 1 Pages 2-
Volume 63, Issue 6
Displaying 1-9 of 9 articles from this issue
- |<
- <
- 1
- >
- >|
-
Hideki Kurimura1998 Volume 63 Issue 6 Pages 467-474
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSRecently, major oil companies, engineering companies, and research-oriented venture businesses outside of Japan have claimed that the significant improvement of GTL technology has been achieved. With such technological improvement, purely commercial application of the GTL technology is being studied in several potential projects. Nevertheless, very few detailed technical and economical information has been disclosed so far. Considering the above, we have evaluated the state-of-the-art GTL technology in terms of commercial applicability with the licensor information. As a result of the economical evaluation, it is concluded that the current GTL technology can only be applied to the projects with extremely low feed gas costs and/or with existing intensive infrastructures.View full abstractDownload PDF (498K) -
Yoshimi Horiguchi1998 Volume 63 Issue 6 Pages 475-484
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSSouth Kanto gas field produces natural gas dissolved in water. Its amount is more than 90% of total Japanese production of dissolved-in-water type natural gas. Gas dissolved brine contains high concentration of iodine. It is purified for medical and industrial uses. The amount of iodine production from Chiba Prefecture is about 40% of all the world production.
In the early 1970's a serious subsidence issue happened according to the production of natural gas with water, however, in recent years the subsidence has been controled by efforts of administrations and companies. This paper presents the background of the subsidence and how to prevent it. It is important to develop gas fields from an environmental point of view.View full abstractDownload PDF (603K) -
Masahiro Miwa1998 Volume 63 Issue 6 Pages 485-494
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSAbu Dhabi Oil Co., Ltd. (ADOC) is currently operating three oil fields; Mubarraz, Umm Al-Anbar and Neewat Al-Ghalan (GA) Fields. The oil production of Mubarraz Field commenced in 1973 and an artificial lift with ESP (electrical submersible pump) was applied. Umm Al-Anbar Field initiated the oil production in 1989 and one of EOR methods; a vaporized gas miscible drive was applied to increase an oil recovery. Neewat Al-Ghalan Field is located in the southern part of the Arabian Gulf about 100km off the coast of Abu Dhabi, U.A.E., between Umm Al-Anbar Field and Mubarraz Island where ADOC has oil processing, storage, loading and utility facilities. GA Field is marginal to be developed from its reservoir characteristics, low OOIP and so on. The development of the field became feasible by applying the vaporized gas miscible drive for achieving higher oil recovery, and utilizing the existing facilities in Umm Al-Anbar Field and Mubarraz Island. The development plan was established and the development works commenced in 1993. It has been completed in two years as scheduled and the production commenced in June 1995.
This report summarizes the development of Neewat Al-Ghalan Field with presenting its exploration, field outline, development plan, development works and both production and injection performances. It also describes a sour gas injection project, which is undergoing in order to solve an environmental protection issue.View full abstractDownload PDF (717K) -
Masaki Iijima, Shigeaki Mitsuoka, Hiroshi Tanaka, Tomio Mimura, Shichi ...1998 Volume 63 Issue 6 Pages 495-502
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSMitsubishi Heavy Industries, Ltd. and The Kansai Electric Power Co., Inc. have been developing CO2 recovery technology from flue gas since 1990 as a measure against global warming. As a result of the research and development efforts which have now been carried out for more than eight years, the new energy-efficient solvents KS-1, KS-2 and KS-3, which are less corrosive and cause less degradation than those used previously, have been developed. In addition, a research has produced a new packing, that can reduce the size of CO2 absorbers and the horsepower requirements of flue gas blowers.
The efficient of new energy-saving solvent, KS-1, KS-2, KS-3 and a new packing have been proved by using the pilot plant, which is located in Nanko Power Plant of the Kansai Electric Power Co., Inc. This new CO2 recovery technology from flue gas, in comparison with the conventional technology (monoethanol amine process), dramatically reduced the CO2 recovery cost. We evaluated this technology for applying enhanced oil recovery. The result was that CO2 delivery cost was equivalent to that of the United States for enhanced oil recovery. A cost evaluation study reveals, if the power plant located near the oil field (a couple of hundred kilometers), it is feasible to supply CO2 in reasonable cost.View full abstractDownload PDF (1010K) -
Daijiro Terasaki1998 Volume 63 Issue 6 Pages 503-511
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSIn Japan, the greater part of imported natural gas is consumed in the power industry and the gas industry. For efficiently utilizing the energy generated from natural gas combustion, new systems based on repowering or co-generation, such as combined cycle power generation, gas co-generation, gas air conditioning, power generation by refuse incineration, have been developed in these industries.
Recently it has become very important to develop abundant small gas fields and to recover flared natural gas. The technologies, by which natural gas is chemically converted to liquid materials, such as methanol, dimethyl ether and GTL, are being watched with keen interest because these liquids are easier to transport than natural gas.
In future, it will be expected to develop new technologies for converting natural gas to useful raw materials in chemical industries.View full abstractDownload PDF (610K) -
Hirotaka Miyake1998 Volume 63 Issue 6 Pages 512-520
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSThere is going to be considerable growth in natural gas demand in Japan.
Because natural gas has an environmental advantage in comparison with other resources such as petroleum and coal, the recoverable reserves of natural gas is equal to those resources. The Japanese gas market occupies a small share in terms of total primary energy consumption. It is only about 12%, nearly half the OECD average.
In the Asia-Pacific region, a number of small offshore gas fields have not yet been developed. The reasons for this are lack of commercially attractive development solutions, lack of nearby markets and lack of commercial incentives, so that these fields can not compete with the development of larger gas fields.
Therefore, Japan National Oil Corporation is coducting studies and research for the development of marginal offshore gas fields. The first, survey of small gas fields in the region, including reserves water depth, distance to market etc., began in 1997FY and will continue until 1998FY. Technical solutions for small gas fields will include potential utilization of LNG-FPSO (floating production, storage and offloading) and conversion of GTL (gas to liquid). For exploitation of small offshore gas fields, LNG-FPSO system has emerged as a potentially feasible approach. The first part of this paper presents the interim results of the outline of small gas fields in the Asia-Pacific region.
The second part of this paper presents the results of the following studies of LNG-FPSO in the region, (1) design conditions and areas of specific investigations, (2) outline of the LNG-FPSO concept, (3) safty assessment studies on offloading systems, (4) model testing for evaluation of the limiting weather conditions, and (5) economic studies. The concepts of LNG-FPSO are considered to be economically and technically feasible, although certain technical adjustments need to be incorporated to reflect actual field conditions.View full abstractDownload PDF (754K) -
cohabitation with the environment[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...1998 Volume 63 Issue 6 Pages 521-536
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSDownload PDF (1473K) -
Masahiro Sekioka1998 Volume 63 Issue 6 Pages 537-546
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSIt is surely by far the most interesting to inquire why an extraordinary concentration in a distribution of oil resources exists, not only in its geographical location but also in its geological age. That is the concentration into the geological strata of the Jurassic and the Cretaceous Systems of the Arabian Plate.
Thanks to the current development of the geophysical plume theory and related sciences, we can now guess the reason to some extent. The plume theory found the mega-cycles of repeated catastrophe; that is, all the sub-continents got together into one super-continent and then split by itself with every “Wilson Cycle” of around 300 to 900 million years.
In short, the period from the last stage of the Jurassic Period to the first half of the Cretaceous Period was a very peculiar one. The period corresponded to the transition stage of “Wilson Cycles” and was presumed to be the most active one when mantle convection started splitting the Pangea, the last super-continent. Concentration of carbon dioxide in the atmosphere was extraordinary high and warm weather continued for a long time. Planktons flourished and left unusual amount of limestone and organic materials at the same time. Too much organic materials caused anoxia at the sea bottom and also high atmospheric temperature caused sea water uniform and ocean current minimum. There is a possibility that the dead bodies of plankton had been buried without decomposition by bacteria and had been later matured into oil. This supports the indigenous oil generation theory.
To be sure, this scenario may be a key to the most enigmatic question to which this treatise is concerned. At any rate, to know this peculiarity is the most important for all of us who spend an abundance of oil.View full abstractDownload PDF (819K) -
Tadashi Chida, Chihiro Inoue1998 Volume 63 Issue 6 Pages 547-551
Published: 1998
Released on J-STAGE: March 27, 2008
JOURNAL FREE ACCESSTo establish the bioremediation process for marine oil spill, it is important to know the environmental parameters on biodegradation of petroleum. The rate of the microbial degradation of hydrocarbons appear to be highly dependent on localized environmental conditions such as concentration of nutrients and temperature of sea water.View full abstractDownload PDF (302K)
- |<
- <
- 1
- >
- >|