Practices and Technology Tackling in Developing Thin Oil Reservoirs in Tuha Oil Region

doi:10.7657/XJPG20200609

Abstract

Abstract:

After 30 years of development, a series of efficient development technologies have been formed for thin oil reservoirs in Tuha oil region. Most of the thin oil reservoirs are of ultra-low to low permeability and very heterogeneous. In the early development stage with low water cut, the reservoirs were developed by powerful oil production and water injection through areal well patterns. During that stage, the oil production was high and the development effect was good. Then in the intermediate stage with medium to high water cut, infilled well pattern was used, which played an important role in slowing down the production decline and stabilizing the production in a short term. However, early powerful production and injection affected the oil displacement efficiency and recovery of the primary pay zones. Especially after entering the late development stage with extra-high water cut, water injection was more and more invalid, and many oil wells suffered from damaged casing or suspending, resulting in low reservoir pressure. It’s difficult to stimulate the thin oil reservoirs by conventional measures, so the development of the thin oil reservoirs was shown as low production rate and low efficiency. In order to fundamentally improve the development effect, Tuha oilfield has actively carried out a series of indoor researches and field pilot tests such as gas injection, composite flooding with nano-micro balls and changing flowing field, made preliminary achievements and formed a series of technologies. With further development and application of these technologies, the natural production decline of the thin oil reservoirs is expected to be controlled from 19.8% to 11.0%, and the recovery is expected to increase by 2.00% to 3.00%.

Key words: Tuha oil region, thin oil reservoir, development practice, efficient development, potential analysis, oil displacement efficiency, recovery, technology tackling

CLC Number:

TE341

ZHOU Bo. Practices and Technology Tackling in Developing Thin Oil Reservoirs in Tuha Oil Region[J]. Xinjiang Petroleum Geology, 2020, 41(6): 697-703.

Figures/Tables 11

Fig. 1.

Table 1

Table 2

Table 3

Table 4

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Table 5

Table 6

References 18

[1]	崔辉, 王世信. 吐鲁番—哈密盆地油气田开发工程[M]. 北京: 石油工业出版社, 1998: 176-289.
	CUI Hui, WANG Shixin. Oil-gas field development engineering of Turpan-Hami basin[M]. Beijing: Petroleum Industry Press, 1998: 176-289.
[2]	方凌云, 万新德. 砂岩油藏注水开发动态分析[M]. 北京: 石油工业出版社, 1998: 76-140.
	FANG Lingyun, WAN Xinde. Dynamic analysis of water-flooding development in sandstone reservoir[M]. Beijing: Petroleum Industry Press, 1998: 76-140.
[3]	秦同洛, 李璗, 陈元千. 实用油藏工程方法[M]. 北京: 石油工业出版社, 1989: 242-306.
	QIN Tongluo, LI Dang, CHEN Yuanqian. Practical reservoir engineering method [M]. Beijing: Petroleum Industry Press, 1989: 242-306.
[4]	谢兴礼, 周波, 梁文发. 新油田生产能力研究及其方法[J]. 石油勘探与开发, 1997,24(4):57-60.
	XIE Xingli, ZHOU Bo, LIANG Wenfa. A research method of production capacity for new field[J]. Petroleum Exploration and Development, 1997,24(4):57-60.
[5]	王玉成, 赵志龙, 袁昭. 鄯善油田J₂s油藏东区优化注采系统研究[J]. 石油勘探与开发, 1997,24(5):86-88.
	WANG Yucheng, ZHAO Zhilong, YUAN Zhao. Injection-production system optimization for eastern zone of J₂s reservoir in Shanshan oilfield[J]. Petroleum Exploration and Development, 1997,24(5):86-88.
[6]	李福垲, 周波, 盛建荣, 等. 丘陵油田开发现代经营管理模式[J]. 石油勘探与开发, 1998,25(6):33-35.
	LI Fukai, ZHOU Bo, SHENG Jianrong, et al. Modern management model in the development of Qiuling oilfield[J]. Petroleum Exploration and Development, 1998,25(6):33-35.
[7]	周波, 杜洪荣, 单慧玲, 等. 雁20块堵水技术研究与应用[J]. 长江大学学报(自然科学版), 2011,8(12):56-58.
	ZHOU Bo, DU Hongrong, SHAN Huiling, et al. Research and application of water plugging technology in Yan 20 block[J]. Journal of Yangtze University(Natural Science Edition), 2011,8(12):56-58.
[8]	崔传智, 李松, 杨勇, 等. 特高含水期油藏平面分区调控方法[J]. 石油学报, 2018,39(10):1 155-1 161.
	CUI Chuanzhi, LI Song, YANG Yong, et al. Planar zoning regulation and control method of reservoir at ultra-high water cut stage[J]. Acta Petrolei Sinica, 2018,39(10):1 155-1 161.
[9]	王继强, 石成方, 纪淑红, 等. 特高含水期新型水驱特征曲线[J]. 石油勘探与开发, 2017,44(6):955-960.
	WANG Jiqiang, SHI Chengfang, JI Shuhong, et al. New water drive characteristic curves at ultra-high water cut stage[J]. Petroleum Exploration and Development, 2017,44(6):955-960.
[10]	胡绍彬, 徐庆龙, 郭玲玲, 等. 采出液含水对生产气油比的影响规律[J]. 石油学报, 2018,39(1):116-121.
	HU Shaobin, XU Qinglong, GUO Lingling, et al. Influence of water cut of produced liquid on produced gas-oil ratio[J]. Acta Petrolei Sinica, 2018,39(1):116-121.
[11]	徐君, 高文君, 彭玮, 等. 两种驱替特征曲线特性对比[J]. 新疆石油地质, 2007,28(2):194-196.
	XU Jun, GAO Wenjun, PENG Wei, et al. Characteristic correlation of two water displacement curves[J]. Xinjiang Petroleum Geology, 2007,28(2):194-196.
[12]	崔英怀, 高文君, 王洪关. 油藏工程基础与方法[M]. 北京: 石油工业出版社, 2018:254-276.
	CUI Yinghuai, GAO Wenjun, WANG Hongguan, Reservoir engineering fundamentals and method [M]. Beijing: Petroleum Industry Press, 2018:254-276.
[13]	李瑞升, 李冬艳, 高文君. 低黏低渗油田新型水驱规律的建立及应用[J]. 新疆石油天然气, 2019,15(4):52-55.
	LI Ruisheng, LI Dongyan, GAO Wenjun. Establishment and application of new water-flooding characteristic law in low viscosity and low permeability oilfields[J]. Xinjiang Oil & Gas, 2019,15(4):52-55.
[14]	狄勤丰, 张景楠, 叶峰, 等. 驱替过程中重力舌进特征的核磁共振可视化实验[J]. 石油学报, 2017,38(10):1 183-1 188.
	DI Qinfeng, ZHANG Jingnan, YE Feng, et al. Nuclear magnetic resonance visualization experiment of gravity tongue characteristics in the displacement process[J]. Acta Petrolei Sinica, 2017,38(10):1 183-1 188.
[15]	刘宝和. 中国石油勘探开发百科全书(开发卷)[M]. 北京: 石油工业出版社, 2008: 305-310.
	LIU Baohe. Encyclopedia of petroleum exploration and development in China (Development Volume)[M]. Beijing: Petroleum Industry Press, 2008: 305-310.
[16]	葛家理. 现代油藏渗流力学原理[M]. 北京: 石油工业出版社, 2003: 317-337.
	GE Jiali. The modern mechanics of fluids flow in oil reservoir[M]. Beijing: Petroleum Industry Press, 2003: 317-337.
[17]	郭长永, 熊启勇, 邓伟兵, 等. 底水油藏水平井水平段动用状况预测方法[J]. 新疆石油地质, 2019,40(4):468-472.
	GUO Changyong, XIONG Qiyong, DENG Weibing, et al. Methods to predict horizontal section producing status of horizontal wells in reservoirs with bottom water[J]. Xinjiang Petroleum Geology, 2019,40(4):468-472.
[18]	李传亮, 毛万义, 吴庭新, 等. 渗吸驱油的机理研究[J]. 新疆石油地质, 2019,40(6):689-694.
	LI Chuanliang, MAO Wanyi, WU Tingxin, et al. A study on mechanism of oil displacement by imbibition[J]. Xinjiang Petroleum Geology, 2019,40(6):689-694.