New progress in basic natural gas geological theories and future exploration targets in China

被引：0
|
作者：
Li J. [1 ,2 ]
Wang X. [1 ,2 ]
Wei G. [1 ,2 ]
Yang W. [1 ,2 ]
Xie Z. [1 ,2 ]
Li Z. [1 ,2 ]
Guo J. [1 ,2 ]
Wang Y. [1 ,2 ]
Ma W. [1 ,2 ]
Li J. [1 ,2 ]
Hao A. [1 ,2 ]
机构：
[1] PetroChina Research Institute of Petroleum Exploration & Development, Langfang, 065007, Hebei
[2] CNPC Key Laboratory of Gas Reservoir Formation and Development, Langfang, 065007, Hebei
来源：
Wang, Xiaobo (wangxb69@petrochina.com.cn) | 2018年 / Natural Gas Industry Journal Agency卷 / 38期
关键词：
Ancient carbonate rock; Basic geological theory; Craton; Exploration domain; Foreland basin; Giant gas field; Natural gas; New progress; Tight sandstone;
D O I：
10.3787/j.issn.1000-0976.2018.04.004
中图分类号：
学科分类号：
摘要：
As natural gas exploration expands to deep, ultra-deep and unconventional areas, more and more complex exploration targets are encountered. In this circumstance, it is necessary to improve the existing basic natural gas geological theories for guiding the exploration and discovery of more giant gas fields. In this paper, the researches on basic natural gas geological theories since the beginning of the 12th Five-Year Plan were engaged, and then the key exploration target zones were analyzed. Some results were obtained. First, the theory of whole-process hydrocarbon generation of organic matter has been improved and the geologic theories of organic matter hydrocarbon generation (e. g. the thermal evolution model of kerogen degradation and hydrocarbon generation and the successive gas generation of organic matter) have been developed. Second, multi-element natural gas genesis identification method, quantitative evaluation method for different types of seals/caprocks, tight sandstone gas accumulation theory for low hydrocarbon generation intensity region, and hydrocarbon accumulation theory for large-size ancient carbonate rock gas field have been established, and the geological theories of gas generation, genesis identification and hydrocarbon accumulation have been developed to provide the effective guidance for the exploration breakthrough and discovery of largesize gas fields in the key basins of China recently. Four conclusions were reached. First, ancient carbonate rocks, tight sandstone, foreland region, shale and volcanic rocks are primary exploration targets for discovering giant gas fields. Second, craton and foreland basins are still the key exploration areas, and paleo-uplift, gentle slope and thrust belt are the main enrichment zones. Third, ancient series of strata and deep formations are critical gas exploration targets in the future. Fourth, oil cracking gas in marine basins, tight sandstone gas and shale gas are the important replacement resources for future gas reserves and production growth. © 2018, Natural Gas Industry Journal Agency. All right reserved.
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页码：37 / 45
页数：8
相关论文
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