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62 巻 , 5 号
選択された号の論文の10件中1~10を表示しています
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  • 多田 裕一
    62 巻 (1997) 5 号 p. 377-385
    公開日: 2008/03/27
    ジャーナル フリー
    Since the middle of the 1980s, the social and economic situation surrounding the international oil industries has been dynamically changed.
    This can be seen in lower oil prices, the decline in influence of major oil companies, the collapse of the Soviet Union, the increase of new E & P opportunities in developing countries, new technologies and so on. Due to these rapid and drastic changes, major international oil companies, including those in Japan have reorganized their corporate structures, improved their asset value and quality, re-evaluated E & P investment strategy.
    This report briefly outlines the background and the recent status of E & P activities of the Japanese oil industry.
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  • 富岡 正, 三品 哲
    62 巻 (1997) 5 号 p. 386-391
    公開日: 2008/03/27
    ジャーナル フリー
    Venezuela project and Australia project are recent typical overseas operator projects of Teikoku Oil Co.. Venezuela project is an on shore reactivation and development project, and Australia project is an offshore exploration project. Operational environments are fairly different. Each project selected own way of operation in order to achieve cost effective drilling operation.
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  • 武藤 敦
    62 巻 (1997) 5 号 p. 392-399
    公開日: 2008/03/27
    ジャーナル フリー
    The first commercial oilfield in Australia was discovered at Moonie in 1961 and was put into production in 1964. Australian oil production rose sharply in the latter half of 1970's as a result of the discovery of Barrow Island in the North West Shelf (NWS) and Bass Strait offshore fields. Total oil and natural gas production in 1996 was 540, 000bbl/day and 2, 622MM cf/day respectively. In Australia, more than 90% of total oil and gas production is from offshore fields.
    Japan Drilling Company, through its operations with two jack up rigs in the NWS area over the period of six years from 1991 to 1997, had a chance to monitor the various projects in the state of Western Australia. In 1996, Western Australia has become the largest oil and gas producing state in Australia, and this trend is expected to continue.
    This report will outline the current projects and future developments in Western Australia and the Timor Sea, as well as the oil and gas industry of Australia in general.
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  • 井戸 尚孝
    62 巻 (1997) 5 号 p. 400-405
    公開日: 2008/03/27
    ジャーナル フリー
    This paper describes the rig operations of Abu Dhabi Oil Co., Ltd. (ADOC).
    ADOC has been operating three offshore fields (Mubarraz, Umm Al Anbar and Neewat Al Ghalan) located about 60 to 100km off the coast of Abu Dhabi in Arabian Gulf where fifty-four (54) wells have been drilled. Twenty-five (25) wells out of fifty-four (54) have been completed as electrical submersible pump (ESP) producers. The total number of rig operations has reached to three hundred and eighty-five (385) since the first well was drilled, with half of the operation related to ESP programs. ADOC uses the cantilever jack up type rig because of the shallow water depth and workover re-entry requirement.
    Typically, about seventy (70) people are on board, from the rig contractor, the service companies and ADOC. As so many people are working on the rig, it is essential to keep good communications with the rig superintendent and the engineers from service companies and have meetings before conducting stimulation, cementing or other sensitive operation. Logistics is also key to efficient rig operation.
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  • 松田 学
    62 巻 (1997) 5 号 p. 406-415
    公開日: 2008/03/27
    ジャーナル フリー
    These days, subsea development solution is getting quite common option for a marginal field development. In PL089 where Idemitsu Oil Development Co., Ltd. has 9.6% share, subsea development system has been applied for Snorre, Tordis, Statfjord East and Vigdis fields. It seems to a person who has no experience about subsea development/completion that “subsea completion” is very special. But there are no major difference between platform completion operations and subsea completion operations except subsea completion requires special tools for installing tubing hanger and subsea tree. Since people can not access directly to the subsea systems, special attention is paid for operation process and procedure as well as company's internal control system.
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  • 佐々木 芳朗
    62 巻 (1997) 5 号 p. 416-420
    公開日: 2008/03/27
    ジャーナル フリー
    Cambodia Petroleum Exploration Co., Ltd. (CAMPEX) drilled its third exploratory well named “Poulo Wai-1” in August 1996 in the Block III of Offshore Cambodia. In order to select a drilling rig, CAMPEX studied the two contract systems: an Assignment/Reassignment Agreement system (“Assignment”) and a Tender system. It was concluded that “Assignment” was more cost effective than a Tender on this particular well after a series of negotiation with Enterprise Oil Exploration Ltd. (Enterprise). CAMPEX decided to adopt “Assignment” and acquired a drill ship. The main points of the agreement were that CAMPEX was assigned the right and the duty of one option well from the original agreement made by Enterprise and that CAMPEX shared a mobilisation and a demobilisation cost of the rig, a rig modification cost and a time-writing cost with Enterprise. For the sake of the adoption of “Assignment”, CAMPEX saved the total well cost significantly.
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  • ゴス J.
    62 巻 (1997) 5 号 p. 421-427
    公開日: 2008/03/27
    ジャーナル フリー
    まず, サービスカンパニー内外に起きた劇的な変化に焦点を当てながら, この業界の経営環境を探った。次いで, 将来のビジネス環境を考えた。私たちは, 地球科学的進歩を促進させ, 石油会社とサービスカンパニーの新しい関係における我々の役割について考えた。
    この数年間でオイルフィールドサービス業界は多くの変化を遂げてきた。企業の数が激的に減少する一方で, 組織の再編化が効率的で低コストな新たな道を実現している。地球科学的進歩は, 石油開発の最適化, 低コストの実現, そして情報工学の利用により促されているが, これは石油会社とサービスカンパニーのチームワークの強化が重要な役割を占めている。そして, 将来的にこの進歩は石油開発の需要の増加に十分対応できると考えられる。
    このアプローチにより明白な結果と利益をもたらしており, 将来もこの進歩の波は続くであろう。
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  • レイノルズ J., ペンダーグラフト B., スパデューティ T., ズーバー P., 吉田 徳文
    62 巻 (1997) 5 号 p. 428-437
    公開日: 2008/03/27
    ジャーナル フリー
    今後の10年ないし20年間, アジア太平洋地域と中国が世界で最も急速に経済成長を遂げるであろうことは衆目の一致するところであり, これらの地域では上流エネルギー部門の大変革が起こるものと予想される。その変革要求に対応して, 石油会社と問題解決提供者 (サービス会社) は来たるべき世界最大の経済共同体のエネルギー需用に応えるべく連帯を深める道を模索している。
    アジア太平洋地域および中国においても, その市場は他の世界市場と同様に石油産業の実利的要求に大きく影響を受けるため, これら地域の石油産業は急増するエネルギー需用の挑戦に応えるよう自らを変革しなければならない。この変革の一部分として, また, 対応策研究の成果として integrated solutions (総合的問題解決手法) が, 今後発展の見込めるビジネス選択肢として前面に浮かび上がってきた。最上の価値創造を達成できる関係を求めて, 多くの石油会社がサービス会社に対して問題解決を図る随伴者としての役割を担わせている。石油会社はサービス会社に対する力点をサービスと製品の送りだしから, 問題解決手段の提供へと移しており, 解決手段提供者に求められる役割分担は明確になりつつある。
    本報告は integrated solutions に触発される石油会社とサービス会社の提携に焦点を当て, 不適当な提携がいかに問題解決手法の有用性を損なわせ, 問題解決の道を閉ざすかについて説明している。
    この中で述べられる主題は以下のとおりである。
    •作業遂行形態を変えることがアジア太平洋地域, 中国にとって基本的条件となるのはなぜか
    •Integrated solutions の多様な定義が, どの程度それら問題解決手段を売り買いする過程に影響するか
    •国営石油会社, 国際石油会社, およびサービス提供会社間での作業遂行上の障害
    •なぜ integrated solutions は概念に根ざし, 業績を向上するか
    •なぜサービス会社は integrated solutions を発信できるのか
    •買い手側保護手段構築の必要性
    本報告はこれまでアジア太平洋地域, および中国で行われた integrated solutions 施行の実績から導かれる所見に触れ, さらに integrated solutions の売り手と買い手の連携を確実にするための提案を行っている。
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  • 徳永 朋祥, 西塚 知久, 登坂 博行, 小島 圭二
    62 巻 (1997) 5 号 p. 438-450
    公開日: 2008/03/27
    ジャーナル フリー
    A three-dimensional two-phase basin simulator, BASIN3D2P, was applied to the offshore Niigata basin to make it clear the problems of basin simulation studies for practical exploration activities.
    The studied area was about 40km×45km, and was divided into 1, 258 grids horizontally, while ten horizons were deposited sequentially during about 16 m.y. Input data sets for the calculation were prepared by using data from exploration wells, interpreted seismic reflection profiles, results of geochemical measurements, and so on.
    The result showed that three-dimensional evolution process of the basin through geological time scale could be simulated by BASIN3D2P, and by modifying heat flow history, relative permeability curves, amount of initial organic materials, and duration of the calculation, we could improve the fitting of the calculated results with the observation.
    We, lastly, discussed possible practical usage of three-dimensional basin simulation to the estimation of oil accumulation in peripheral structures of the developed/depleted oil fields.
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  • 西野 卓也
    62 巻 (1997) 5 号 p. 451-458
    公開日: 2008/03/27
    ジャーナル フリー
    Underbalanced drilling is one of the quickly developing technologies in the world. It enables to lower the development cost by increasing the oil production per well and by avoiding the possibility of drilling hazards such as lost circulation, differential sticking. Further, production impairment reduction is significant in underbalanced drilling because no fluid invasion occurs. This paper introduces surface and downhole equipment, tripping procedure, limitation of the existing underbalanced drilling and completion technology.
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