Concept, Connotation and Evaluation Index of High Effective Gas Source Kitchen and Its Action to the Formation of High Effective Gas Pool

ZHAO Wen-zhi; WANG Zhao-yun; WANG Ze-cheng; WANG Hong-jun; ZHANG Shui-chang; WANG Yun-peng; ZHAO Chang-yi; MIAO Ji-jun

Concept, connotation and evaluation index of high effective gas source kitchen are discussed in the papere. High effective gas source kitchen refers to those that not only has high abundance of organic matter and good quality type of source rockswhich can generate large amount of gas under the geothermal and biology action, but also has a good coincidence with the large scale gas accumulation and pool forming in time and space, therefore, it plays an important role in the formation of large and medium gas pool. High effective gas source kitchen includes two profiles connotation, that are material basis and thermal kinetics process of gas generation. So, the evaluation index are discussed from three features as follows: the first is high intensity of gas generation ( generally larger than 20 ×10⁸m³ /km² ) , derived from large and medium gas field advocated by Jinxing-Dai; the second is short action time ofmain gas generation period, which is confirmed through gas generation kinetics studies of source rocks of typeⅠ, Ⅱ and Ⅲ and crude oil, and the statistic analysis ofmain gas generation time ofmain gas source rocks in China, the major gas generation period of high effective gas source kitchen is usually less than 40Ma, especially better less than 20Ma. The third is that ending time of major gas generation period is very close to present, which is important to the formation of gas accumulations in the late stage. The contributions of high effective gas source kitchen to the formation of high effective gas pool lies in high rate of gas supply resulting in high effective accumulation and migration of gas, besides little loss of natural gas etc. According to the type of source rocks and kinetics process of gas generation, three groups,including six sub-groups, of high effective gas source kitchens are classified in China.

Concept, Connotation and Evaluation Index of High Effective Gas Source Kitchen and Its Action to the Formation of High Effective Gas Pool

1. Research Institute of Petroleum Exploration & Development,PetroChina, Beijing 100083;

2. Guangzhou Geochemical Institute, CAS, Guangzhou 510640

Received Date: 2005-06-27

Rev Recd Date: 2005-09-07

Publish Date: 2005-12-10

Key words:

Abstract: Concept, connotation and evaluation index of high effective gas source kitchen are discussed in the papere. High effective gas source kitchen refers to those that not only has high abundance of organic matter and good quality type of source rockswhich can generate large amount of gas under the geothermal and biology action, but also has a good coincidence with the large scale gas accumulation and pool forming in time and space, therefore, it plays an important role in the formation of large and medium gas pool. High effective gas source kitchen includes two profiles connotation, that are material basis and thermal kinetics process of gas generation. So, the evaluation index are discussed from three features as follows: the first is high intensity of gas generation ( generally larger than 20 ×10⁸m³ /km² ) , derived from large and medium gas field advocated by Jinxing-Dai; the second is short action time ofmain gas generation period, which is confirmed through gas generation kinetics studies of source rocks of typeⅠ, Ⅱ and Ⅲ and crude oil, and the statistic analysis ofmain gas generation time ofmain gas source rocks in China, the major gas generation period of high effective gas source kitchen is usually less than 40Ma, especially better less than 20Ma. The third is that ending time of major gas generation period is very close to present, which is important to the formation of gas accumulations in the late stage. The contributions of high effective gas source kitchen to the formation of high effective gas pool lies in high rate of gas supply resulting in high effective accumulation and migration of gas, besides little loss of natural gas etc. According to the type of source rocks and kinetics process of gas generation, three groups,including six sub-groups, of high effective gas source kitchens are classified in China.

HTML

Reference (1)

[1]

1 戴金星. 近四十年来世界天然气工业发展的若干特征[J].天然气地球科学,1991,(06):245-52.

2 Halbouty T M. Geology of Giant Petroleum Fields[M].Talsa,Oklahoma,1970.

3 张子枢. 世界大气田概论[M].北京:石油工业出版社,1990.

4 戴金星,宋岩,张厚福. 中国大中型气田形成的主要控制因素[J].中国科学,1996,(06):481-487.

5 戴金星,夏新宁,洪峰. 天然气地学研究促进了中国天然气储量的大幅度增长[J].新疆石油地质,2002,(05):357-365.

6 戴金星. 加强天然气地学研究:勘探更多大气田[J].天然气地球科学,2003,(01):1-14.

7 戴金星,陈践发,钟宁宁. 中国大气田及其气源[M].北京:科学出版社,2003.

8 赵文智. 中国含油气系统基本特征与评价方法[M].北京:科学出版社,2003.

9 Zhao Wenzhi,Wang Zhaoyun. Gas formation mechanism of marine carbonate source rocks in China[J].中国科学,2005,(04):441-453.

10 Behar F,Vandenbroucke M,Tang Y. Thermal cracking of kerogen in open and closed systems: determination of kinetic parameters and stoichiometric coefficients for oil and gas generation[J].Organic Geochemistry,1997,(5-6):321-339.

11 Behar F,Kressmann S,Rudkiewicz L. Experimental simulation in a confined system and kinetic modeling of kerogen and oil cracking[J].Organic Geochemistry,1992,(1-3):173-189.

12 Andrew S Pepper,Tumothy A Dodd. Simple kinetic models of petroleum formation.Part : oil-gas cracking[J].Marine and Petroleum Geology,1995,(03):321-340.

13 Schenk H J,Primio R Di,Horsfield B. The conversion of oil into gas in petroleum reservoirs.Part 1: comparative kinetic investigation of gas generation from crude oils of lacustrine,marine and fluviodeltaic origin by programmed-temperature closed-system pyrolysis[J].Organic Geochemistry,1997,(7-8):467-481.

14 Robert R B,Anthony F G. Primary migration by oil-generation microfracturing in low-permeability source rocks: application to the Austin Chalk,Texas[J].AAPG Bulletin,1999,(05):727-756.

15 梁狄刚,张水昌,赵孟军. 库车拗陷的油气成藏期[J].科学通报,2002,(zk):56-63.

16 邓鸣放,陈伟煌. 崖13-1大气田形成的地质条件[A].北京:石油工业出版社,1992.73-81.

17 孙嘉陵. 南海崖13-1气田特征及富集成藏条件[J].天然气工业,1994,(02):1-8.

18 赵文智,王兆云,张水昌. 有机质"接力成气"模式的提出及其在勘探中的意义[J].石油勘探与开发,2005,(02):1-7.

19 戴金星. 天然气地质和地球化学论文集[M].北京:石油工业出版社,1998.2000.2002.

20 戴金星,卫延召,赵靖舟. 晚期成藏对大气田形成的重大作用[J].中国地质,2003,(01):10-19.

Concept, Connotation and Evaluation Index of High Effective Gas Source Kitchen and Its Action to the Formation of High Effective Gas Pool

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Related