Reasonable Productivity Optimization Methods and Application in Ultra-Deep Fault-Controlled Fractured-Vuggy Reservoirs

doi:10.7657/XJPG20230109

Abstract

Abstract:

In this paper，the geological and development characteristics in the FQ oilfield in the Tarim basin were analyzed，and then the productivity test method，nozzle flow method and reservoir numerical simulation method were developed to optimize the reasonable productivity in ultra-deep fault-controlled fractured-vuggy reservoirs. The results show that the primary oil recovery of ultra-deep fault-controlled fractured-vuggy reservoirs can be divided into early stage，middle stage and late stage，which differ greatly in development characteristics. The ultra-deep fault-controlled fractured-vuggy reservoirs in the FQ oilfield exhibit four types of productivity test curves: convex，linear，upturned and stepped. For wells showing the convex curves，the productivity at the inflection of the curves is the reasonable productivity. For wells showing the linear and upturned curves，the maximum test productivity is the reasonable productivity，but the nozzle testing productivity needs to be continuously expanded until the inflection of the curves appears. For wells following the stepped curves，the maximum test productivity after reaching the step will be the reasonable productivity. When the well productivity is optimized by the nozzle flow method，the productivity at the inflection of the nozzle flow curves is the reasonable productivity. The reservoir numerical simulation method is suitable for optimizing the well productivity in the middle and late stages of primary oil recovery，that is，the reasonable productivity is determined by optimizing the key indicators such as water breakthrough time，cumulative oil production，and recovery rate.

Key words: Tarim basin, fractured-vuggy reservoir, ultra-deep layer, fault-controlled, reasonable productivity, productivity test, nozzle flow method, reservoir numerical simulation

CLC Number:

TE344

GU Hao, KANG Zhijiang, SHANG Genhua, ZHANG Dongli, LI Hongkai, HUANG Xiaote. Reasonable Productivity Optimization Methods and Application in Ultra-Deep Fault-Controlled Fractured-Vuggy Reservoirs[J]. Xinjiang Petroleum Geology, 2023, 44(1): 64-69.

Figures/Tables 6

Fig. 1.

Fig. 2.

Fig. 3.

Table 1.

Fig.4.

Table 2.

References 20

[1]	马永生, 蔡勋育, 云露, 等. 塔里木盆地顺北超深层碳酸盐岩油气田勘探开发实践与理论技术进展[J]. 石油勘探与开发, 2022, 49(1):1-17.
	MA Yongsheng, CAI Xunyu, YUN Lu, et al. Practice and theoretical and technical progress in exploration and development of Shunbei ultra-deep carbonate oil and gas field,Tarim basin,NW China[J]. Petroleum Exploration and Development, 2022, 49(1):1-17. doi: 10.1016/S1876-3804(22)60001-6
[2]	顾浩, 郑松青, 张冬丽, 等. 超深油藏物质平衡方程修正及应用[J]. 石油学报, 2022, 43(11):1623-1 631.
	GU Hao, ZHENG Songqing, ZHANG Dongli, et al. Modification and application of material balance equation for ultra-deep reservoirs[J]. Acta Petrolei Sinica, 2022, 43(11):1623-1 631.
[3]	顾浩, 康志江, 尚根华, 等. 基于物质平衡的超深断溶体油藏弹性驱产能主控因素分析[J]. 油气地质与采收率, 2021, 28(4):86-92.
	GU Hao, KANG Zhijiang, SHANG Genhua, et al. Analysis of main controlling factors for elastic flooding productivity of ultra-deep fault-karst reservoirs based on material balance[J]. Petroleum Geology and Recovery Efficiency, 2021, 28(4):86-92.
[4]	田军, 杨海军, 朱永峰, 等. 塔里木盆地富满油田成藏地质条件及勘探开发关键技术[J]. 石油学报, 2021, 42(8):971-985. doi: 10.7623/syxb202108001
	TIAN Jun, YANG Haijun, ZHU Yongfeng, et al. Geological conditions for hydrocarbon accumulation and key technologies for exploration and development in Fuman oilfield,Tarim basin[J]. Acta Petrolei Sinica, 2021, 42(8):971-985.
[5]	程晓军. 超深断溶体油藏油井见水特征及生产制度优化:以塔里木盆地顺北油田Z井为例[J]. 新疆石油地质, 2021, 42(5):554-558.
	CHENG Xiaojun. Characteristics of water-breakthrough and optimization of production system of oil wells drillied in ultra-deep fault-karst reservoirs:a case study on Well Z in Shunbei oilfield,Tarim basin[J]. Xinjiang Petroleum Geology, 2021, 42(5):554-558.
[6]	田军, 王清华, 杨海军, 等. 塔里木盆地油气勘探历程与启示[J]. 新疆石油地质, 2021, 42(3):272-282.
	TIAN Jun, WANG Qinghua, YANG Haijun, et al. Petroleum exploration history and enlightenment in Tarim basin[J]. Xinjiang Petroleum Geology, 2021, 42(3):272-282.
[7]	丁志文, 汪如军, 陈方方, 等. 断溶体油气藏成因、成藏及油气富集规律:以塔里木盆地哈拉哈塘油田塔河南岸地区奥陶系为例[J]. 石油勘探与开发, 2020, 47(2):286-296.
	DING Zhiwen, WANG Rujun, CHEN Fangfang, et al. Origin,hydrocarbon accumulation and oil-gas enrichment of fault-karst carbonate reservoirs:a case study of Ordovician carbonate reservoirs in south Tahe area of Halahatang oilfield,Tarim basin[J]. Petroleum Exploration and Development, 2020, 47(2):286-296.
[8]	鲁新便, 胡文革, 汪彦, 等. 塔河地区碳酸盐岩断溶体油藏特征与开发实践[J]. 石油与天然气地质, 2015, 36(3):347-355.
	LU Xinbian, HU Wenge, WANG Yan, et al. Characteristics and development practice of fault-karst carbonate reservoirs in Tahe area,Tarim basin[J]. Oil & Gas Geology, 2015, 36(3):347-355.
[9]	鲁新便, 杨敏, 汪彦, 等. 塔里木盆地北部“层控”与“断控”型油藏特征:以塔河油田奥陶系油藏为例[J]. 石油实验地质, 2018, 40(4):461-469.
	LU Xinbian, YANG Min, WANG Yan, et al. Geological characteristics of ‘strata-bound’ and ‘fault-controlled’ reservoirs in the northern Tarim basin:taking the Ordovician reservoirs in the Tahe oil field as an example[J]. Petroleum Geology & Experiment, 2018, 40(4):461-469.
[10]	顾浩, 尚根华, 李慧莉, 等. 基于井温的超深断溶体油藏油井动用深度计算[J]. 特种油气藏, 2021, 28(2):57-62.
	GU Hao, SHANG Genhua, LI Huili, et al. Calculation of production depth of oil wells in ultra-deep fault-karst reservoirs based on well temperature[J]. Special Oil & Gas Reservoirs, 2021, 28(2):57-62.
[11]	漆立新, 云露, 曹自成, 等. 顺北油气田地质储量评估与油气勘探方向[J]. 新疆石油地质, 2021, 42(2):127-135.
	QI Lixin, YUN Lu, CAO Zicheng, et al. Geological reserves assessment and petroleum exploration targets in Shunbei oil & gas field[J]. Xinjiang Petroleum Geology, 2021, 42(2):127-135.
[12]	周代余, 江同文, 冯积累, 等. 确定底水油藏水平井无水期合理产能的简单方法[J]. 石油学报, 2005, 26(6):86-89. doi: 10.7623/syxb200506019
	ZHOU Daiyu, JIANG Tongwen, FENG Jilei, et al. A simplified approach for determining the reasonable water free production of horizontal well with bottom water drive reservoir[J]. Acta Petrolei Sinica, 2005, 26(6):86-89. doi: 10.7623/syxb200506019
[13]	符喜德. 裂缝性低渗透油藏合理产能研究[D]. 武汉: 长江大学, 2013.
	FU Xide. The study on reasonable capacity of fractured low permeability reservoir[D]. Wuhan: Yangtze University, 2013.
[14]	李子甲, 陈青. 塔河油田6区油井合理产量的确定方法研究[J]. 成都理工大学学报(自然科学版), 2005, 32(1):58-60.
	LI Zijia, CHEN Qing. Study on determination of rational well production in No.6 area of Tahe oil field,Xinjiang,China[J]. Journal of Chengdu University of Technology(Science & Technology Edition), 2005, 32(1):58-60.
[15]	蔡磊, 贾爱林, 唐俊伟, 等. 苏里格气田气井合理配产方法研究[J]. 油气井测试, 2007, 16(4):25-28.
	CAI Lei, JIA Ailin, TANG Junwei, et al. Study on determine production proration of single well for Sulige gas field[J]. Well Testing, 2007, 16(4):25-28.
[16]	王俊明, 唐海, 马小明, 等. 确定凝析气井合理产能的新方法[J]. 石油勘探与开发, 2004, 31(3):113-115.
	WANG Junming, TANG Hai, MA Xiaoming, et al. A new way of determining reasonable productivity for condensate gas well[J]. Petroleum Exploration and Development, 2004, 31(3):113-115.
[17]	胡文革. 顺北油气田断溶体油藏油井产能评价新方法[J]. 新疆石油地质, 2021, 42(2):168-172.
	HU Wenge. A new method for evaluating the productivity of oil wells in fault-karst reservoirs in Shunbei oil & gas field[J]. Xinjiang Petroleum Geology, 2021, 42(2):168-172.
[18]	顾浩, 王光付, 杨敏, 等. 超深断溶体油藏油井动用深度确定方法及其对开发的指导意义[J]. 石油学报, 2021, 42(9):1202-1 211.
	GU Hao, WANG Guangfu, YANG Min, et al. A method for estimating the drainage depth of oil well in ultra-deep fault-karst reservoirs and its guiding significance to oilfield development[J]. Acta Petrolei Sinica, 2021, 42(9):1202-1 211.
[19]	杨胜来, 魏俊之. 油层物理学[M]. 北京: 石油工业出版社, 2007.
	YANG Shenglai, WEI Junzhi. Reservoir physics[M]. Beijing: Petroleum Industry Press, 2007.
[20]	张琪. 采油工程原理与设计[M]. 山东东营: 中国石油大学出版社, 2000.
	ZHANG Qi. The principle and design of oil production engineering[M]. Dongying,Shandong: China University of Petroleum Press, 2000.