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  • 1  Research Progress on Shale Gas at Home and Abroad and Shale Gas Resource Potentiality in Shandong Province
    ZHANG Zengqi TIAN Jingxiang ZHANG Chunchi CHENG Guangsuo SUN Weiqing SUN Bin LIANG Jipo
    2012, 28(10):1-6.
    [Abstract](305) [HTML](0) [PDF 0.00 Byte](5)
    At present, contradictions between supply and demand of current international energy has becoming more and more outstanding. Energy is increasingly becoming the focus in the world, and exploration and development of shale gas resources has been paid more attention. Shale gas resources are very rich, they are mainly distributed in North America, Central Asia, China, Latin America, the Middle East and North Africa, and the former Soviet Union. In recent years, accompanying with the development of mining and use technologies, exploration of shale gas resources have been carried out in the America, Europe, Asian countries. Shale gas resources are very rich in China. Regional exploration research has been carried out step by step, and has achieved good results. But the overall research and exploration of shale gas is still in starting stage, and have not found the actual hale gas reservoirs. There is still a big gap of technology development between China and abroad. Combining with specific characteristics of different types of organic-bearing mud shale and domestic and international experiences in shale gas exploration, it is primarily regarded that there has a more favorable shale gas resource potentiality in Shandong province. Prospective areas of shale gas in Shandong Province are Cenozoic paleogene Jiyang group, Wutu group and Guanzhuang group, Mesozoic early Cretaceous Laiyang group, Paleozoic Carboniferous - Permian Yuemengou group and Shihezi group. On the basis of considering occurrence strata, shale gas potentiality and feasibility of shale gas development, the potential areas of shale gas in Shandong province have been put forward as follows: Jiyang depression, Linqing depression, Jiaolai depression, Huangxian (Longkou) depression and hidden uplift in southwestern Shandong. Among them, the potentiality in Jiyang depression is the best.
    2  Gas content of gas-bearing shale and its geological evaluation summary
    LI Yu-xi QIAO De-wu JIANG Wen-li ZHANG Chun-he
    2011, 30(2).
    [Abstract](350) [HTML](0) [PDF 0.00 Byte](0)
    3  The main progress and problems of shale gas study and the potential prediction of shale gas exploration
    Jiang Fujie Pang Xiongqi Ouyang Xuecheng Guo Jigang Jin Cong Huo Zhipeng Wang Qing
    2012, 19(2):198-211.
    [Abstract](318) [HTML](0) [PDF 0.00 Byte](0)
    Shale gas means the internal residual natural gas resource in mud-shale,which exists in the form of adsorption,liberation,dissolution,etc.,and is generated in diverse geologic settings in mudstone or shale,and has saturated multiform residual requisitions of rocks and entered the threshold of expulsion yet not being completely expulsed.With the increasing of exploration in North America,Europe and Asia,the research in the reserve characteristics and the hydrocarbon accumulation mechanisms of shale gas has achieved extraordinary progress.However,there are still many problems in the research in shale gas,for instance,the concept of "shale gas" does not express the scientific meaning of shale oil-gas reservoir;there are not a definite genetic mechanism and an effective judgment of shale gas;the distribution and generation of shale gas are not clear and the united method of prescription does not exist.In view of the current cognition of shale gas,the authors prescribe the shale gas resource in China by the critical saturating capacity of residual hydrocarbon and the ratio of oil and gas expulsed by hydrocarbon due to the decline of temperature and pressure in the process of drilling and extracting.
    4  Evaluation of China shale gas from the exploration and development of North America shale gas
    ZHAO Jing-zhou FANG Chao-qiang ZHANG Jie WANG Li ZHANG Xin-xin
    2011, 26(2):1-7,110,117.
    [Abstract](340) [HTML](0) [PDF 0.00 Byte](0)
    America is the first country for the commercial shale gas exploration and development in the world.The shale gas yield of America is close to 900×108 m3 in 2009.The high-speed exploration and development of shale gas makes the natural gas reserves of America increase by 40%.Canada is the second country for the commercial shale gas exploration and development in the world,and the exploration and development is mainly in Horn River Basin and Triassic Montney shale,the northeastern British Columbia.In recent years,the exploration and development is also in other provinces.According to the shale gas exploration and development characteristics and successful experience of North America and the geologic characteristics of shale gas forming of China,the revelation for the shale gas exploration and development of China is as follows:(1)shale gas is a kind of great potential resource,it can be explored and developed in the near feature and good economic benefit can be obtained,and therefore it should be paid attention in oil and gas development decision;(2)shale gas reservoir is a widely distributed,easily found,low abundant,difficultly recovered unconventional self-generation self-storage gas reservoir,its exploration and development requires advanced techniques,strict cost control,favorable tax policy and environmental protection policy;(3)the geological background of shale gas forming in China is more complicated than that in North America,and therefore the evaluation of shale gas blocks should establish the standard suitable to the geological conditions of shale gas forming in China.
    5  Research of the petrophysical property of shale gas reservoirs
    董丙响 程远方 刘钰川 易新斌 杨柳 吴玲妍 王蓓
    2013, 28(1).
    [Abstract](323) [HTML](0) [PDF 0.00 Byte](0)
    On the basis of studying the literatures at home and abroad,the concept and the evaluation criterion of shale gas reservoirs are introduced according to research methods of conventional reservoirs,and the petrophysical properties of shale gas reservoirs are studied deeply.The formulas to calculate the porosity of shale gas reservoirs and a new shale gas storage and movement model are presented.The method for calculating the brittleness of shale gas reservoirs is also presented,and the shale gas reservoirs are divided into brittle shale and ductile shale,which can provide the foundation for the hydraulic fracturing design of shale gas reservoirs.
    6  The differences of reservoir features between southernmarine shale gas and coal-bearing shale gas in North China
    suncairong tangshuheng weijianguang
    2017, 26(3).
    [Abstract](298) [HTML](0) [PDF 0.00 Byte](5)
    7  Hydrocarbon Accumulation Conditions of Shale Gas and Exploration Risks in China
    郝情情 孙雨 左银辉
    2013, 34(3).
    [Abstract](306) [HTML](0) [PDF 0.00 Byte](0)
    8  The exploration and development situation of World shale gas and development of China's shale gas outlook
    ZHANG Suo-xu
    2013, 22(3).
    [Abstract](351) [HTML](0) [PDF 0.00 Byte](0)
    9  Development in researches on shale gas recovery mechanism
    CHEN Tian-yu
    2014, 23(6):14-18.
    [Abstract](302) [HTML](0) [PDF 0.00 Byte](5)
    Accurate understanding of recovery mechanism is a key to successful exploitation of shale gas. Development in researches on conceptual reservoir models, theoretical models and simulation techniques of shale gas exploration was analyzed. The conclusions are as follows: 1.reservoir model conforming to microstructure of gas shale in China must be established, 2.Deep burial shale gas reservoirs in China are featured by more complicated ground stress environment. Porosity and permeability of gas shale change with ground stress. Ground stress must be considered to research shale gas recovery mechanism 3. Numerical simulation technique must be developed base on shale gas reservoir characteristics in China.
    10  Summary of shale gas research in North American and revelations to shale gas exploration of Lower Paleozoic strata in China south area
    肖贤明 宋之光 朱炎铭 田辉 尹宏伟
    2013, 38(5).
    [Abstract](325) [HTML](0) [PDF 0.00 Byte](0)
    北美近10 a来对构造较简单、中-高成熟度(Ro<3.0%)、埋藏较浅地层(<4 000 m)页岩气的形成、赋存与富集机理、评价方法与核心区预测作了大量研究,取得了实质性的进展,并实现了页岩气的大规模工业开发.我国南方下古生界成熟很高(Ro=2.5%~4.0%)、构造改造强烈、现埋藏深度差异大,对于这套地层的页岩气的评价,缺乏相关理论与方法.为规避风险、获得效益,需以北美页岩气研究为借鉴,针对其地质地球化学特点,在广泛开展相关基础研究的基础上,重点发展页岩含气量的现场测试技术与原地气量的定量评价体系,评估勘探开发示范区页岩的资源潜力,确定页岩气的主控因素,为实现我国南方下古生界页岩气的高效开发提供理论指导与方法基础.
    11  Summary of shale gas research in North American and revelations to shale gas exploration of Lower Paleozoic strata in China south area
    XIAO Xian-ming SONG Zhi-guang ZHU Yan-ming TIAN Hui YIN Hong-wei
    2013, 38(5):721-727.
    [Abstract](261) [HTML](0) [PDF 0.00 Byte](5)
    In North American,a lot of work had been done on shale gas formation,storage,enrichment,evaluation and core area prediction for gas shale strata with relative simple structure deformations,middle-high maturities (Ro<3.0%)and shallower burial depths(<4 000 m),great achievements have been made,and industrialscale shale gas exploitation have been carried out.The lower Paleozoic strata in China south area are characterized by excessively high thermal maturities(Ro=2.5%-4.0%),strong structure reforming,and great variations of their current burial depths.For the shale gas evaluation of this set of strata,there is lack of available theories and methods.In order to elude exploration risk and obtain benefit,the fundamental researches pointing to these characters should be conducted based on achievements made by North American,mainly including techniques of in situ measurements of gas content in shales and quantitative assessment system of OGIP(original gas in place),evaluation of shale gas potentials of the demonstrated areas or blocks,and determination of the main factors controlling shale gas resources.The purpose of these studies is to provide theoretical guides and technical methods for the high efficient exploitation of shale gas in the Lower Paleozoic strata of China South area.
    12  Characteristics of Organic-rich Shale and Exploration Area of Shale Gas in Guizhou Province
    YANG Rui-dong CHEN Wei ZHOU Ru-xian
    2012, 23(2):340-347.
    [Abstract](298) [HTML](0) [PDF 0.00 Byte](0)
    It presented the marine environment at the long term geological time and formed the multi-sequence organic-rich shale under anaerobic deposition environment in the Guizhou province.Based on distribution and thickness of organic-rich shale,we divide into 7 organic-rich shale sequences,such as Sinian Doushantuo Formation,lower Cambrian Niutitang Formation,upper Ordovician Wufeng Formation,lower Silurian Longmaxi Formation,middle Devonian Guanziyao-Huohong Formation,lower Carboniferous Datang Formation,Permian Xixia-Longtang Formation.The shale gas source rocks in the Guizhou are characterized as multi-sequences,large thickness,high organic carbon content,and high thermal maturity.According to thickness and distribution of source rocks,organic carbon content and thermal maturity,we draw three favorable areas of shale gas exploration,i.e.Wuling fold,central-north Guizhou,and Ziyun-Ceheng of Nanpanjiang.The most favorable area of shale gas exploration in the Guizhou province is the Ceheng-Wangmo area in the Nanpanjiang basin.
    13  An overview of shale-gas production
    ZHANG Dongxiao YANG Tingyun
    2013, 34(4):792-801. DOI: 10.7623/syxb201304023
    [Abstract](290) [HTML](0) [PDF 0.00 Byte](5)
    China is just starting the industrial development of shale gas due to its great potential in shale gas resources although domestic researches on the comprehensive assessment, production mechanisms and production technologies of shale gas remain immature. Based on the authors' previous investigation and extensive literature search, this paper gives an overview on advances in the research and development of shale gas both at home and abroad, which discusses the following aspects: (1) the comprehensive assessment of shale-gas resources is the first step in shale-gas exploration and development and the key parameters and factors that determine the potential of shale gas are analysed; (2) production mechanisms of shale gas are fundamental to reservoir modeling, numerical simulation and hydro-fracturing design, and therefore, the complex production mechanisms and flow models are summarized. (3) some key technologies applied to shale-gas development, such as horizontal well and hydraulic fracturing, and the intrinsic correlation between reservoir characteristics and technologies chosen are discussed, which provide a reference basis for production optimization; (4) a review of the development history, characteristics and future development expectation of shale-gas resources in China.
    14  The analysis of the shale gas industry development in China
    Gao Yang Luo Ling Li Wenbo
    2015, 24(8).
    [Abstract](330) [HTML](0) [PDF 0.00 Byte](5)
    Shale gas as a substitute for natural gas to alleviate nervous energy has played a positive role, more and more cause the attention of the countries all over the world. Considered as a whole from the global perspective, this article through to the analysis of shale gas development process, technical level, policies and measures of the American and European, Combining with domestic shale gas reserves, distribution and accumulation resources situation, analyzed the main problems of the current development of shale gas industry of our country, puts forward a series of policy suggestions of attaches great importance to the basis for shale gas geology survey work, speed up the shale gas technology innovation, complete the industrial policy of shale gas, set a reasonable price, pay attention to development and environmental protection coordination, draw lessons from foreign advanced experience of the rapid development of shale gas industry in China.
    15  Accumulation Conditions For Shale Gas and It′s Future Exploration of Silurian in the Central-Upper Yangtze Region
    ZHANG Li-ya LI Yan-xia LI Jing-hong JIN Ya-wen
    2011, 30(6):90-93.
    [Abstract](325) [HTML](0) [PDF 0.00 Byte](0)
    16  Optimization of shale gas desorption method in field
    2015, 0(3).
    [Abstract](292) [HTML](0) [PDF 0.00 Byte](0)