页岩气“双甜点”参数测井评价方法

doi:10.11743/ogg20220420

Abstract

Abstract:

Evaluation of “double sweet spot” in shale gas reservoirs， i.e. shale gas sweet spot that are both geologically and engineeringly feasible， is challenging due to insufficient accuracy of gas saturation calculation， limitations of fracability assessment methods （though quite a few）， and inadequate integration between the geological and engineering assessments. In view of these， a gas abundance curve representing the geological “sweet spot” is established to tackle the accuracy problem through a sequential reconstruction of the sensitivity relationship between logging curves and gas bearing property based on gas bearing principles. A comprehensive fracability index representing the engineering “sweet spot” is developed to enhance the usability of the fracability assessment methods based on the correlation of rock brittleness index， mechanic parameters and in-situ stress difference coefficients to fracturing. And a geology-engineering evaluation chart is also proposed to better integrate the two aspects based on the production data and productivity classification of layers tested. This study improves the accuracy of qualitative identification and fracability assessment of shale gas sweet spots. The chart has been proven to be effective in recognizing high- medium- and low-potential gas pay zones as well as dry layers. Practices show that the technology is applicable and reliable in assessing shallow/deep layers in the Sichuan Basin and its periphery.

Key words: gas abundance, compressibility index, sweet spot, geology-engineering integration, shale gas, reservoir assessment, Sichuan Basin

CLC Number:

TE132.2

Shuanglian Liu. Logging evaluation of “double sweet spot” in shale gas reservoirs[J]. Oil & Gas Geology, 2022, 43(4): 1005-1012.

Figures/Tables 9

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

References 22

1	薛承瑾.页岩气压裂技术现状及发展建议［J］.石油钻探技术，2011，39（3）：24-29.
	Xue Chengjin. Technical advance and development proposals of shale gas fracturing［J］. Petroleum Drilling Techniques， 2011， 39（3）：24-29.
2	曾雨辰，杨保军.页岩气水平井大型压裂设备配套及应用［J］.石油钻采工艺，2013，35（6）：78-82.
	Zeng Yuchen， Yang Baojun. Equipment outfitting and application for large‑scale fracturing in shale gas horizontal wells［J］. Oil Dril‑ ling & Production Technology，2013，35（6）：78-82.
3	史进，吴晓东，孟尚志.页岩气开发现状及开采技术分析［C］//2011年煤层气学术研讨会论文集. 北京：地质出版社，2011.
	Shi Jing， Wu Xiaodong， Meng Shangzhi. Analysis on current development situation and exploitation technology of shale gas［C］//Proceedings of 2011 Coalbed Methane Symposium. Beijing： Beijing： Geological Publishing House， 2011，462-469.
4	陈桂华，白玉湖，陈晓智，等.页岩油气纵向综合甜点识别新方法及定量化评价［J］.石油学报，2016，37（11）：1337-1342，1360.
	Chen Guihua， Bai Yuhu， Chen Xiaozhi， et al. A new identification method for the longitudinal integrated shale oil/gas sweet spot and its quantitative evaluation［J］.Acta Petrolei Sinica，2016，37（11）：1337-1342，1360.
5	祝彦贺，陈桂华，梁建设，等.页岩油气甜点识别的综合评价方法［J］.中国矿业大学学报，2016，45（2）：301-309.
	Zhu Yanhe， Chen guihua， Liang Jianshe， et al. Comprehensive evaluation methods of shale oil and shale gas sweet spot identification［J］. Journal of China University of Mining & Technology，2016，45（2）：301-309.
6	廖东良，路保平.页岩气工程甜点评价方法：以四川盆地焦石坝页岩气田为例［J］.天然气工业，2018，38（2）：43-50.
	Liao Dongliang， Lu Baoping. An evaluation method of engineering sweet spots of shale gas reservoir development： A case study from the Jiaoshiba Gas Field， Sichuan Basin［J］. Natural Gas Industry，2018，38（2）：43-50.
7	葛勋，郭彤楼，马永生，等.四川盆地东南缘林滩场地区上奥陶统五峰组-龙马溪组页岩气储层甜点预测［J］.石油与天然气地质，2022，43（3）：633-647.
	Ge Xun， Guo Tonglou， Ma Yongsheng， et al.Prediction of shale reservoir sweet spots of the Upper Ordovician Wufeng‑Longmaxi Formations in Lintanchang area， southeastern margin of Sichuan Basin［J］.Oil & Gas Geology，2022， 43（3）： 633-647.
8	吴诗情，郭建华，李智宇，等.中国南方海相地层牛蹄塘组页岩气“甜点段”识别和优选［J］.石油与天然气地质，2020，41（5）：1048-1059.
	Wu Shiqing， Guo Jianhua， Li Zhiyu，et al.Identification and optimization of shale gas “sweet spots” in marine Niutitang Formation，South China［J］.Oil & Gas Geology，2020，41（5）：1048-1059.
9	董谦，刘小平，李武广，等.关于页岩含气量确定方法的探讨［J］.天然气与石油，2012，30（5）：34-37.
	Dong qian， Liu Xiaoping， Li Wuguang， et al. Determination of gas content in shale［J］. Natural Gas and Oil，2012，30（5）：34-37.
10	许露露，刘早学，温雅茹，等. 中扬子鄂西地区牛蹄塘组页岩储层特征及含气性研究［J］.特种油气藏，2020，27 （4）：1-9.
	Xu Lulu， Liu Zaoxie， Wen Yaru， et al. Shale gas reservoir and gas‑bearing properties of Middle Yangtze Niutitang Formation in Western Hubei［J］. Special Oil & Gas Reserviors，2020，27（4）： 1-9 .
11	何畅，万玉金，耿晓燕，等.页岩气水平井高产主控因素定量评价及应用［J］.特种油气藏，2021，28 （1）：113-119.
	He Chang， Wan Yujin， Geng Xiaoyan， et al. Quantitative evaluation and application of main control factors for high production of horizontal shale gas wells［J］.Special Oil & Gas Reserviors， 2021，28 （1）：113-119.
12	沈骋，郭兴午，陈马林，等.深层页岩气水平井储层压裂改造技术［J］.天然气工业，2019，39（10）：68-75.
	Shen Cheng， Guo Xingwu， Chen Malin， et al. Horizontal well fracturing stimulation technology for deep shale gas reservoirs［J］. Natural Gas Industry，2019，39（10）：68-75.
13	赵金洲，任岚，沈骋，等.页岩气储层缝网压裂理论与技术研究新进展［J］.天然气工业，2018，38（3）：1-14.
	Zhao Jingzhou， Ren Lan， Shen Cheng， et al. Latest research progresses in network fracturing theories and technologies for shale gas reservoirs［J］. Natural Gas Industry，2018，38（3）：1-14.
14	蒋廷学，卞晓冰，苏瑗，等.页岩可压性指数评价新方法及应用［J］.石油钻探技术，2014，42（5）：16-20.
	Jiang Tingxue， Bian Xiaobin， Su Yuan， et al. A new method for evaluating shale fracability index and its application［J］.Petroleum Drilling Techniques，2014，42（5）：16-20.
15	陈志明，陈昊枢，廖新维，等.致密油藏压裂水平井缝网系统评价方法-以准噶尔盆地吉木萨尔地区为例［J］.石油与天然气地质，2020，41（6）：1288-1298.
	Chen Zhiming， Chen Haoshu， Liao Xinwei， et al.Evaluation of fracture networks along fractured horizontal wells in tight oil reservoirs：A case study of Jimusar oilfield in the Junggar Basin［J］.Oil & Gas Geology，2020，41（6）：1288-1298.
16	李曙光，徐天吉，吕其彪，等.深层页岩气双“甜点”参数地震预测技术［J］.天然气工业，2019，39（S1）：113-117.
17	董岩，徐东升，钱根葆，等.吉木萨尔页岩油“甜点”预测方法［J］.特种油气藏，2020，27（3）：54-59.
	Dong Yan， Xu Dongsheng， Genbao QianN. Shale oil“sweet‑spot”prediction in Jimusar Sag［J］. Specail Oil & Gas Reservoirs， 2020，27（3）：54-59.
18	太万雪，刘成林，田继先，等.柴达木盆地西部古近系咸化湖盆烃源岩总有机碳含量预测［J］.特种油气藏，2021，28（1）：74-80.
	Tai Wanxue， Liu Chenglin， Tian Jixian，et al. Prediction of total organic carbon content of source rocks in Paleogene salinized lake basin in western Qaidam Basin［J］.Special Oil & Gas Reservoirs，2021，28（1）：74-80.
19	郭秋麟，王建，陈晓明，等.页岩油原地量和可动油量评价方法与应用［J］.石油与天然气地质，2021，42（6）：1451-1463.
	Guo Qiulin， Wang Jian， Chen Xiaoming，et al.Discussion on eva‑ luation method of total oil and movable oil in‑place［J］. Oil & Gas Geology，2021，42（6）：1451-1463.
20	马妮，林正良，胡华锋等.页岩地层的破裂压力地震预测方法［J］.石油物探，2019，58（６）：926-934.
	Ma Ni， Lin Zhengliang， Hu Huadeng， et al. A seismic‑based prediction method for fracture pressure in a shale formation［J］. Geophysical Prospecting for Petroleum，2019，58（６）：926-934.
21	龙章亮，温真桃，李辉，曾贤薇. 一种基于灰色关联分析的页岩储层可压性评价方法［J］. 油气藏评价与开发， 2020， 10（1）： 37-42.
	Long Zhangliang， Wen Zhentao， Li Hui， Zeng Xianwei. An evaluation method of shale reservoir crushability based on grey correlation analysis［J］. Reservoir Evaluation and Development， 2020， 10（1）： 37-42.
22	Zheng Herong， Zhang Jincai， Qi Yuanchang. Geology and geomechanics of hydraulic fracturing in the Marcellus shale gas play and their potential applications to the Fuling shale gas development ［J］. Energy Geoscience， 2020， 1（1-2）： 36-46.

[1]	Rui FANG, Yuqiang JIANG, Changcheng YANG, Haibo DENG, Chan JIANG, Haitao HONG, Song TANG, Yifan GU, Xun ZHU, Shasha SUN, Guangyin CAI. Occurrence states and mobility of shale oil in different lithologic assemblages in the Jurassic Lianggaoshan Formation， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(3): 752-769.
[2]	Ning LI, Ruilei LI, He MIAO, Kaifang CAO, Jun TIAN. Stepwise identification of favorable facies belts and reservoir sweet spots of deep intermediate-basic volcanic rocks in the Songliao Basin [J]. Oil & Gas Geology, 2024, 45(3): 801-815.
[3]	Caineng ZOU, Dazhong DONG, Wei XIONG, Guoyou FU, Qun ZHAO, Wen LIU, Weiliang KONG, Qin ZHANG, Guangyin CAI, Yuman WANG, Feng LIANG, Hanlin LIU, Zhen QIU. Advances， challenges， and countermeasures in shale gas exploration of underexplored plays， sequences and new types in China [J]. Oil & Gas Geology, 2024, 45(2): 309-326.
[4]	Zhe ZHAO, Bin BAI, Chang LIU, Lan WANG, Haiyan ZHOU, Yuxi LIU. Current status， advances， and prospects of CNPC’s exploration of onshore moderately to highly mature shale oil reservoirs [J]. Oil & Gas Geology, 2024, 45(2): 327-340.
[5]	Xiao HE, Maja ZHENG, Yong LIU, Qun ZHAO, Xuewen Shi, Zhenxue Jiang, Wei WU, Ya WU, Shitan NING, Xianglu TANG, Dadong LIU. Characteristics and differential origin of Qiongzhusi Formation shale reservoirs under the “aulacogen-uplift” tectonic setting， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 420-439.
[6]	Changbo ZHAI, Liangbiao LIN, Donghua YOU, Fengbin LIU, Siyu LIU. Sedimentary microfacies characteristics and organic matter enrichment pattern of the 1^st member of the Middle Permian Maokou Formation， southwestern Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 440-456.
[7]	Heyi ZHANG, Shuai YANG, Xihua ZHANG, Hanlin PENG, Qian LI, Cong CHEN, Zhaolong GAO, Anqing CHEN. Sedimentary microfacies and environmental evolution of the Middle Permian Maokou Formation in the eastern Sichuan Basin： A case study of the Yangjiao section in Wulong District， Chongqing， China [J]. Oil & Gas Geology, 2024, 45(2): 457-470.
[8]	Hui PAN, Yuqiang JIANG, Xun ZHU, Haibo DENG, Linke SONG, Zhanlei WANG, Miao LI, Yadong ZHOU, Linjie FENG, Yongliang YUAN, Meng WANG. Evaluation of geological sweet spots in fluvial tight sandstone gas： A case study of the first submember of the second member of the Jurassic Shaximiao Formation， central Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 471-485.
[9]	Baoshou ZHANG, Benjian ZHANG, Hua WANG, Jianfa CHEN, Kaixuan LIU, Shuang DOU, Xin DAI, Shuangling CHEN. The Jinqiu gas field in the Sichuan Basin： A typical helium-bearing to helium-rich gas field with the Mesozoic sedimentary rocks as helium source rocks [J]. Oil & Gas Geology, 2024, 45(1): 185-199.
[10]	Zhili ZHANG, Yanping QIAO, Shuang DOU, Kunyu LI, Yuan ZHONG, Luya WU, Baoshou ZHANG, Xin Dai, Xin JIN, Bin WANG, Jinmin SONG. Karst paleogeomorphology and reservoir control model of the 2^nd member of Dengying Formation in Penglai gas area， Sichuan Basin， China [J]. Oil & Gas Geology, 2024, 45(1): 200-214.
[11]	Yi ZHANG, Bin ZHANG, Banghua LIU, Jie LIU, Qiansheng WEI, Qi ZHANG, Hongjun LU, Pengyu ZHU, Rui WANG. Status quo and development trends of research on shale gas adsorption and seepage in shale gas reservoirs [J]. Oil & Gas Geology, 2024, 45(1): 256-280.
[12]	Guangfu WANG, Fengxia LI, Haibo WANG, Tong ZHOU, Yaxiong ZHANG, Ruyue WANG, Ning LI, Yuxin CHEN, Xiaofei XIONG. Difficulties and countermeasures for fracturing of various shale gas reservoirs in the Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1378-1392.
[13]	Zongquan HU, Ruyue WANG, Jing LU, Dongjun FENG, Yuejiao LIU, Baojian SHEN, Zhongbao LIU, Guanping WANG, Jianhua HE. Storage characteristic comparison of pores between lacustrine shales and their interbeds and differential evolutionary patterns [J]. Oil & Gas Geology, 2023, 44(6): 1393-1404.
[14]	Dongfeng HU, Zhihong WEI, Ruobing LIU, Xiangfeng WEI, Wei WANG, Qingbo WANG. Discovery of the Qijiang shale gas field in a structurally complex region on the southeastern margin of the Sichuan Basin and its implications [J]. Oil & Gas Geology, 2023, 44(6): 1418-1429.
[15]	Hongyan WANG, Shangwen ZHOU, Qun ZHAO, Zhensheng SHI, Dexun LIU, Pengfei JIAO. Enrichment characteristics， exploration and exploitation progress， and prospects of deep shale gas in the southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1430-1441.

Logging evaluation of “double sweet spot” in shale gas reservoirs

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 9

References 22

Related Articles 15

Recommended Articles

Metrics