کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4696642 | 1637186 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dongfang 1-1 gas field in the mud diapir belt of the Yinggehai Basin, South China Sea
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dongfang 1-1 gas field in the mud diapir belt of the Yinggehai Basin, South China Sea Dongfang 1-1 gas field in the mud diapir belt of the Yinggehai Basin, South China Sea](/preview/png/4696642.png)
چکیده انگلیسی
The Dongfang 1-1 (DF1-1) mud diapir field is the largest gas field discovered in the Yinggehai Basin up to now, with a proven gas reserve of 99.68Ã109Â m3. The gas pay zones are within the Pliocene fine sandstones and siltstones of the littoral and sand bar facies, with normal pressure regimes. The gases include variable amounts of CO2 and N2 in addition to hydrocarbon gases. The hydrocarbon gases (with the exception of biogenic methane) and nitrogen originated from the marine source rocks within the overpressured Lower to Middle Miocene strata, while CO2 is most likely the product of thermal decomposition of the Tertiary calcareous mudstones and pre-Tertiary carbonates through relatively long-distance vertical migration. The field has received at least four phases of natural gas charging occurring relatively late, most likely during the post-Pliocene Himalayan orogeny. Diapiric faults act as the main conduit for upward movement of fluids released from the deep high-pressure system, with abnormally high pressures providing the significant driving force for gas migration. Because of the episodic nature of the deep high-pressured fluid release and the diapir fault activity, this shallow diapir gas field is characterized by multiple gas sources and episodic fluid accumulation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine and Petroleum Geology - Volume 25, Issues 4â5, AprilâMay 2008, Pages 445-455
Journal: Marine and Petroleum Geology - Volume 25, Issues 4â5, AprilâMay 2008, Pages 445-455
نویسندگان
Wang Zhenfeng, Huang Baojia,