Development strategy of proved undeveloped geological reserves in the Yanchang oil region, Ordos Basin#br#

doi:10.3969/j.issn.1672-7703.2021.02.009

Abstract

Abstract: Although the producing degree of proven geological reserves is generally high on the plane in the Yanchang oil region which is located in the southeastern part of Yishaan Slope, there are still nearly 270 million tons of geological reserves that have not been produced effectively. Stratigraphically, they are mainly in the oil layer groups of Chang 2 and Chang 6 members of the Triassic Yanchang Formation, accounting for 34.4% and 41.4% of the total amount, respectively. In order to reasonably and orderly
build production capacity and increase the producing rate of proven geological reserves, taking the proved undeveloped
geological reserves in the Yanchang oil region as study object, this paper analyzes the plane and vertical distribution, and the reasons for undeveloped geological reserves, identifies the distribution and volume of proven geological reserves with favorable
geological conditions, or allowed by environmental protection and surface conditions. Then strategies, producing procedures and
technical research directions for efficient producing of proved undeveloped geological reserves are put forward. The results show
that the proved undeveloped geological reserves can be classified into three categories in the Yanchang oil region: recently
planned producing reserves, temporarily undevelopable reserves and long-term undevelopable reserves. Through classification
and adjustment of development strategies combined with further research, it is estimated that the newly increased proved developable geological reserves are 20237.59×104 t and the newly-built oil production capacity is (107?155)×104 t/a, which will make a positive contribution to coping with low oil price, realizing efficient oilfield development and maintaining long-term stable production.

CLC Number:

TE348

Guo Shun, Ding Chao, Qu Jianshan, Guo Lan, Wan Yongping, Zhu Qing, Wang Baojun. Development strategy of proved undeveloped geological reserves in the Yanchang oil region, Ordos Basin#br#[J]. China Petroleum Exploration, 2021, 26(2): 85-91.

References

[1] 徐成彬．我国能源发展及其经济效率研究[J]. 宏观经济管理，2020(6): 51-60. Xu Chengbin. Research on energy development and economic efficiency in China[J]. Macroeconomic Management, 2020(6):51-60.
[2] 程立华，郭智，孟德伟，等．鄂尔多斯盆地低渗透致密气藏储量分类及开发对策[J]. 天然气工业，2020,40(3):65-73. Cheng Lihua, Guo Zhi, Meng Dewei, et al . Reserves grading classification and development countermeasures for lowpermeability tight gas reservoirs in the Ordos Basin[J]. Natural Gas Industry, 2020,40(3):65-73.
[3] 廖娟，戴鸿鸣，杨毅，等．探明未动用储量经济评价及开发可行性探讨[J]. 天然气技术，2008,2(3):66-67. Liao Juan, Dai Hongming, Yang Yi, et al . Discussion on economic assessment and development feasibility of proved undeveloped reserves[J]. Natural Gas Technology, 2008,2(3):66-67.
[4] 张抗，门相勇．中国未开发石油储量分析和对策[J]. 中国石油勘探， 2014,19(5):23-31. Zhang Kang, Men Xiangyong. Analysis and strategy of China’s undeveloped oil reserves[J]. China Petroleum Exploration, 2014, 19(5):23-31.
[5] 侯启军，何海清，李建忠，等．中国石油天然气股份有限公司近期油气勘探进展及前景展望[J]. 中国石油勘探，2018,23(1):1-13. Hou Qijun, He Haiqing, Li Jianzhong, et al . Recent progress and prospect of oil and gas exploration by PetroChina Company Limited[J]. China Petroleum Exploration, 2018,23(1):1-13.
[6] 金之钧，蔡勋育，刘金连，等．中国石油化工股份有限公司近期勘探进展与资源发展战略[J]. 中国石油勘探，2018,23(1):14-25. Jin Zhijun, Cai Xunyu, Liu Jinlian, et al . The recent exploration progress and resource development strategy of China Petroleum and Chemical Corporation[J]. China Petroleum Exploration, 2018, 23(1):14-25.
[7] 谢玉洪．中国海洋石油总公司油气勘探新进展及展望[J]. 中国石油勘探，2018,23(1):26-35. Xie Yuhong. New progress and prospect of oil and gas exploration of China National Offshore Oil Corporation[J]. China Petroleum Exploration, 2018,23(1):26-35.
[8] 刘斌．探明未动用石油储量有效开发的对策探讨[J]. 中国矿业，2019, 28(3):40-43,51. Liu Bin. Discussion on the countermeasure of effective development of unused oil reserves[J]. China Mining Magazine, 2019,28(3): 40-43,51.
[9] 张抗，焦扬．深化勘探开发一体化为开发提供有效储量[J]. 中国石油勘探，2018,23(2):76-82. Zhang Kang, Jiao Yang. Deepening the exploration-development integration to provide effective reserves for development[J]. China Petroleum Exploration, 2018,23(2):76-82.
[10] 王香增．陕西延长石油（集团）有限责任公司油气勘探开发进展与展望[J]. 中国石油勘探，2018,23(1):36-43. Wang Xiangzeng. Advances and prospects in oil and gas exploration and development of Shanxi Yanchang Petroleum (Group) Co.,Ltd[J]. China Petroleum Exploration, 2018,23(1): 36-43.
[11] 王香增，党海龙，高涛．延长油田特低渗油藏适度温和注水方法与应用[J]. 石油勘探与开发，2018,45(6):1026-1034. Wang Xiangzeng, Dang Hailong, Gao Tao. Method of moderate water injection and its application in ultra-low permeability oil reservoirs of Yanchang Oilfield, NW China[J]. Petroleum Exploration and Development, 2018,45(6):1026-1034.
[12] 王香增．鄂尔多斯盆地东南部中生界野外露头剖面（图册）及其地质解释[M]. 西安: 西北大学出版社，2012. Wang Xiangzeng. Mesozoic outcrop in southeastern of Ordos Basin (Atlas) and its geological interpretation[M]. Xi’an: Northwestern University Press, 2012.
[13] 王香增，曹金舟．相势共控论在延长油田的勘探实践[M]. 北京：地质出版社，2012. Wang Xiangzeng, Cao Jinzhou. The exploration practice of facies and potential controlling theory in Yanchang Oil Field[M]. Beijing: Geological Publishing House, 2012.
[14] 杨华，付金华，何海清，等．鄂尔多斯华庆地区低渗岩性大油区形成与分布[J]. 石油勘探与开发，2012,39(6):641-648. Yang Hua, Fu Jinhua, He Haiqing, et al . Formation and distribution of large low-permeability lithologic oil regions in Huaqing, Ordos Basin[J]. Petroleum Exploration and Development, 2012,39(6):641-648.
[15] 肖武，田世澄．低品位储量开发现状及其措施对策[J]. 特种油气藏， 2010,17(3):4-9. Xiao Wu, Tian Shicheng. Current status flow-grade reserve sand the countermeasures[J]. Special Oil and Gas Reservoirs, 2010,17(3):4-9.
[16] 张代燕，何金玉，丁湘华，等．新疆油田探明未动用稀油储量分类评价方法[J]. 特种油气藏，2014,21(6):93-97. Zhang Daiyan, He Jinyu, Ding Xianghua, et al . Classification and evaluation method of PUD thin oil reserves in Xinjiang Oilfield[J]. Special Oil and Gas Reservoirs, 2014,21(6):93-97.
[17] 杜金虎，刘合，马德胜，等．试论中国陆相致密油有效开发技术[J]. 石油勘探与开发，2014,41(2):198-205. Du Jinhu, Liu He, Ma Desheng, et al . Discussion on effective development techniques for continental tight oil in China[J]. Petroleum Exploration and Development, 2014,41(2):198-205.
[18] 张福祥，郑新权，李志斌，等．钻井优化系统在国内非常规油气资源开发中的实践[J]. 中国石油勘探，2020,25(2):96-109. Zhang Fuxiang, Zheng Xinquan, Li Zhibin, et al . Practice of drilling optimization system in the development of unconventional oil and gas resources in China[J]. China Petroleum Exploration, 2020,25(2):96-109.
[19] 胡文瑞．地质工程一体化是实现复杂油气藏效益勘探开发的必由之路[J]. 中国石油勘探，2017,22(1):1-5. Hu Wenrui. Geology-engineering integration-a necessary way to realize profitable exploration and development of complex reservoirs[J]. China Petroleum Exploration, 2017,22(1):1-5.
[20] 张合文，崔明月，张宝瑞，等．低渗透薄层难动用边际油藏地质工程一体化技术——以滨里海盆地Zanazour 油田为例[J]. 中国石油勘探， 2019,24(2):203-209. Zhang Hewen, Cui Mingyue, Zhang Baorui, et al . Geologyengineering integration for low-permeability and thin marginal reservoirs: a case study on Zanazour Oilfield, Pre-Caspian Basin[J]. China Petroleum Exploration, 2019,24(2):203-209.
[21] 李忠兴，屈雪峰，刘万涛，等．鄂尔多斯盆地长7 段致密油合理开发方式探讨[J]. 石油勘探与开发，2015,42(2):217-221. Li Zhongxing, Qu Xuefeng, Liu Wantao, et al . Development modes of Triassic Yanchang Formation Chang 7 member tight oil in Ordos Basin，NW China[J]. Petroleum Exploration and Development，2015,42(2):217-221.
[22] 王志刚．涪陵焦石坝地区页岩气水平井压裂改造实践与认识[J]. 石油与天然气地质，2014,35(3):425-430. Wang Zhigang. Practice and cognition of shale gas horizontal well fracturing stimulation in Jiaoshiba of Fuling area[J]. Oil & Gas Geology, 2014,35(3):425-430.
[23] 尹洪军，赵二猛，李兴科，等．致密油藏分段压裂水平井合理试采方式研究[J]. 特种油气藏，2016,23(3):79-82. Yin Hongjun, Zhao Ermeng, Li Xingke, et al . Reasonable production test of multi-stage fractured horizontal well in tight oil reservoir[J]. Special Oil & Gas Reservoirs, 2016,23(3):79-82.
[24] 钱斌，张俊成，朱炬辉，等．四川盆地长宁地区页岩气水平井组“拉链式”压裂实践[J]. 天然气工业，2015,35(1):81-84. Qian Bin, Zhang Juncheng, Zhu Juhui, et al . Application of zipper fracturing of horizontal cluster wells in the Changning shale gas pilot zone， Sichuan Basin[J]. Natural Gas Industry, 2015,35(1):81-84.
[25] 曾义金，陈作，卞晓冰．川东南深层页岩气分段压裂技术的突破与认识[J]. 天然气工业，2016,36(1):61-67. Zeng Yijin, Chen Zuo, Bian Xiaobing. Breakthrough in staged fracturing technology for deep shale gas reservoirs in SE Sichuan Basin and its implications[J]. Natural Gas Industry, 2016,36(1):61-67.
[26] 付金华，李士祥，侯雨庭，等．鄂尔多斯盆地延长组7 段Ⅱ类页岩油风险勘探突破及其意义[J]. 中国石油勘探，2020,25(1):78-92. Fu Jinhua, Li Shixiang, Hou Yuting, et al . Breakthrough of risk exploration for Class Ⅱ shale oil in Chang 7 member of the Yanchang Formation and its significance in the Ordos Basin[J]. China Petroleum Exploration, 2020,25(1):78-92.
[27] 张全胜，李明，张子麟，等．胜利油田致密油储层体积压裂技术及应用[J]. 中国石油勘探，2019,24(2):233-240. Zhang Quansheng, Li Ming, Zhang Zilin, et al . Application of volume fracturing technology in tight oil reservoirs of Shengli Oilfield[J]. China Petroleum Exploration, 2019,24(2):233-240.