Current In-Situ Stress Field and Efficient Development of Bozi-1 Gas Reservoir in Kelasu Structural Belt

doi:10.7657/XJPG20210612

Abstract

Abstract:

In order to improve the development effect of the Bozi-1 gas reservoir in the Kelasu structural belt in the Kuqa depression, Tarim basin, multiple information and methods were used, and logging interpretation and three-dimensional numerical simulation were carried out to study the current spatial distribution and its influencing factors of the in-situ stress field. The findings are basic data for locating development wells. The Bozi-1 gas reservoir is deeper than 6 500 m and still in a strike-slip in-situ stress field. Current in-situ stress is high, the horizontal stress difference is large and the heterogeneity is strong. The current maximum horizontal principal stress may deflect horizontally and longitudinally, with a maximum deflection of 90°. Complicated geological boundary conditions and differences in rock mechanical properties are important factors on the strong heterogeneity of the in-situ stress field. The development of the gas reservoirs obviously disturbs the in-situ stress state around wellbores. To locate wells in the ultra-deep reservoirs, it is necessary to consider the current in-situ stress and the disturbance caused by adjacent wells. It is suggested to drill highly-deviated wells and expand reservoir contact to eliminate the risk of the strong reservoir heterogeneity on drilling safety.

Key words: Tarim basin, Kuqa depression, Kelasu structural belt, Bozi-1 gas reservoir, ultra-deep reservoir, heterogeneity, in-situ stress field, highly-deviated well

CLC Number:

TE332
P551

XU Ke, YANG Haijun, ZHANG Hui, WANG Haiying, YUAN Fang, WANG Zhaohui, LI Chao. Current In-Situ Stress Field and Efficient Development of Bozi-1 Gas Reservoir in Kelasu Structural Belt[J]. Xinjiang Petroleum Geology, 2021, 42(6): 726-734.

Figures/Tables 10

Fig.1.

Fig. 2.

Fig. 3.

Table 1

Table 2

Table 3

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

References 29

[1]	李剑, 佘源琦, 高阳, 等. 中国陆上深层—超深层天然气勘探领域及潜力[J]. 中国石油勘探, 2019, 24(4):403-417.
	LI Jian, SHE Yuanqi, GAO Yang, et al. Onshore deep and ultra-deep natural gas exploration fields and potentials in China[J]. China Petroleum Exploration, 2019, 24(4):403-417.
[2]	戴金星, 倪云燕, 吴小奇. 中国致密砂岩气及在勘探开发上的重要意义[J]. 石油勘探与开发, 2012, 39(3):257-264.
	DAI Jinxing, NI Yunyan, WU Xiaoqi. Tight gas in China and its significance in exploration and exploitation[J]. Petroleum Exploration and Development, 2012, 39(3):257-264.
[3]	贾承造, 郑民, 张永峰. 中国非常规油气资源与勘探开发前景[J]. 石油勘探与开发, 2012, 39(2):129-136.
	JIA Chengzao, ZHENG Min, ZHANG Yongfeng. Unconventional hydrocarbon resources in China and the prospect of exploration and development[J]. Petroleum Exploration and Development, 2012, 39(2):129-136.
[4]	李建忠, 郭彬程, 郑民, 等. 中国致密砂岩气主要类型、地质特征与资源潜力[J]. 天然气地球科学, 2012, 23(4):607-615.
	LI Jianzhong, GUO Bincheng, ZHENG Min, et al. Main types,geological features and resource potential of tight sandstone gas in China[J]. Natural Gas Geoscience, 2012, 23(4):607-615.
[5]	魏国齐, 王俊鹏, 曾联波, 等. 克拉苏构造带盐下超深层储层的构造改造作用与油气勘探新发现[J]. 天然气工业, 2020, 40(1):20-30.
	WEI Guoqi, WANG Junpeng, ZENG Lianbo, et al. Structural reworking effects and new exploration discoveries of subsalt ultra-deep reservoirs in the Kelasu tectonic zone[J]. Natural Gas Industry, 2020, 40(1):20-30.
[6]	杨海军, 孙雄伟, 潘杨勇, 等. 塔里木盆地克拉苏构造带西部构造变形规律与油气勘探方向[J]. 天然气工业, 2020, 40(1):31-37.
	YANG Haijun, SUN Xiongwei, PAN Yangyong, et al. Structural deformation laws and oil & gas exploration direction in the western Kelasu tectonic zone of the Tarim basin[J]. Natural Gas Industry, 2020, 40(1):31-37.
[7]	易士威, 李明鹏, 范土芝, 等. 塔里木盆地库车坳陷克拉苏和东秋断层上盘勘探突破方向[J]. 石油与天然气地质, 2021, 42(2):309-324.
	YI Shiwei, LI Mingpeng, FAN Tuzhi, et al. Exploration directions on the Kelasu and East Qiulitag fault hanging walls,Kuqa depression,Tarim basin[J]. Oil & Gas Geology, 2021, 42(2):309-324.
[8]	田军. 塔里木盆地油气勘探成果与勘探方向[J]. 新疆石油地质, 2019, 40(1):1-11.
	TIAN Jun. Petroleum exploration achievements and future targets of Tarim basin[J]. Xinjiang Petroleum Geology, 2019, 40(1):1-11.
[9]	张辉, 尹国庆, 王志民, 等. 库车坳陷深层裂缝性砂岩气藏可压裂性评价[J]. 新疆石油地质, 2019, 40(1):108-115.
	ZHANG Hui, YIN Guoqing, WANG Zhimin, et al. Fracability evaluation of deep-burial fractured sandstone gas reservoir in Kuqa depression[J]. Xinjiang Petroleum Geology, 2019, 40(1):108-115.
[10]	江同文, 张辉, 王海应, 等. 塔里木盆地克拉2气田断裂地质力学活动性对水侵的影响[J]. 天然气地球科学, 2017, 28(11):1 735-1 744.
	JIANG Tongwen, ZHANG Hui, WANG Haiying, et al. Effects of faults geomechanical activity on water invasion in Kela 2 gasfield,Tarim basin[J]. Natural Gas Geoscience, 2017, 28(11):1 735-1 744.
[11]	张辉, 尹国庆, 王海应. 塔里木盆地库车坳陷天然裂缝地质力学响应对气井产能的影响[J]. 天然气地球科学, 2019, 30(3):379-388.
	ZHANG Hui, YIN Guoqing, WANG Haiying. Effects of natural fractures geomechanical response on gas well productivity in Kuqa depression,Tarim basin[J]. Natural Gas Geoscience, 2019, 30(3):379-388.
[12]	ZHANG Tao, FANG Xiaomin, SONG Chunhui, et al. Cenozoic tectonic deformation and uplift of the South Tian Shan:implications from magnetostratigraphy and balanced cross-section restoration of the Kuqa depression[J]. Tectonophysics, 2014, 628:172-187. doi: 10.1016/j.tecto.2014.04.044
[13]	周鹏, 唐雁刚, 尹宏伟, 等. 塔里木盆地克拉苏构造带克深2气藏储层裂缝带发育特征及与产量关系[J]. 天然气地球科学, 2017, 28(1):135-145.
	ZHOU Peng, TANG Yangang, YIN Hongwei, et al. Relationship between characteristics of fracture belt and production of Keshen 2 gas reservior in Kelasu tectonic zone,Tarim basin[J]. Natural Gas Geoscience, 2017, 28(1):135-145.
[14]	王珂, 杨海军, 张惠良, 等. 超深层致密砂岩储层构造裂缝特征与有效性:以塔里木盆地库车坳陷克深8气藏为例[J]. 石油与天然气地质, 2018, 39(4):719-729.
	WANG Ke, YANG Haijun, ZHANG Huiliang, et al. Characteristics and effectiveness of structural fractures in ultra-deep tight sandstone reservoir:a case study of Keshen-8 gas pool in Kuqa depression,Tarim basin[J]. Oil and Gas Geology, 2018, 39(4):719-729.
[15]	冯许魁, 刘军, 刘永雷, 等. 库车前陆冲断带突发构造发育特点[J]. 成都理工大学学报(自然科学版), 2015, 42(3):296-302.
	FENG Xukui, LIU Jun, LIU Yonglei, et al. Development characteristics of popup structure in Kuqa foreland thrust belt,northern Tarim basin,China[J]. Journal of Chengdu University of Technology (Science and Technology Edition), 2015, 42(3):296-302.
[16]	王招明. 试论库车前陆冲断带构造顶蓬效应[J]. 天然气地球科学, 2013, 24(4):671-677.
	WANG Zhaoming. Discussion of ceiling effect in foreland thrust belt of Kuqa depression[J]. Natural Gas Geoscience, 2013, 24(4):671-677.
[17]	ZOBACK M D, BARTON C A, BRUDY M, et al. Determination of stress orientation and magnitude in deep wells[J]. International Journal of Rock Mechanics & Mining Sciences, 2003, 40(7/8):1 049-1 076.
[18]	邱登峰, 云金表, 刘全有, 等. 不同边界条件断层端部应力集中效应及对裂缝发育的启示[J]. 石油与天然气地质, 2019, 40(1):205-214.
	QIU Dengfeng, YUN Jinbiao, LIU Quanyou, et al. The stress concentration effect at fault end under various boundary conditions and its implications for fracture development[J]. Oil & Gas Geology, 2019, 40(1):205-214
[19]	YIN Shuai, DING Wenlong, ZHOU Wen, et al. In-situ stress field evaluation of deep marine tight sandstone oil reservoir:a case study of Silurian strata in northern Tazhong area,Tarim basin,NW China[J]. Marine & Petroleum Geology, 2017, 80:49-69.
[20]	李志明, 张金珠. 地应力与油气勘探开发[M]. 北京: 石油工业出版社, 1997.
	LI Zhiming, ZHANG Jinzhu. In-situ stress and exploration and development of oil and gas[M]. Beijing: Petroleum Industry Press, 1997.
[21]	ZOBACK M D. Reservoir geomechanics[M]. Cambridge: Cambridge University Press, 2007:206-265.
[22]	徐珂. 南堡凹陷高尚堡油藏现今地应力研究[D]. 山东青岛:中国石油大学(华东), 2019.
	XU Ke. Current in-situ stress of Gaoshangpu reservoir,Nanpu sag,Bohai Bay basin,China[D]. Qingdao,Shangdong:China University of Petroleum (East China), 2019.
[23]	JU Wei, XU Ke, SHEN Jian, et al. A workflow to predict the presentday in-situ stress field in tectonically stable regions[J]. Journal of Environmental & Earth Sciences, 2019, 1(2):42-47.
[24]	徐珂, 戴俊生, 商琳, 等. 南堡凹陷现今地应力特征及影响因素[J]. 中国矿业大学学报, 2019, 48(3):570-583.
	XU Ke, DAI Junsheng, SHANG Lin, et al. Characteristics and influencing factors of in-situ stress of Nanpu sag,Bohai Bay basin,China[J]. Journal of China University of Mining & Technology, 2019, 48(3):570-583.
[25]	谢仁海, 渠天祥, 钱光谟. 构造地质学[M]. 中国矿业大学出版社, 2007: 169.
	XIE Renhai, QU Tianxiang, QIAN Guangmo. Structural geology[M]. China University of Mining and Technology Press, 2007: 169.
[26]	周青春. 温度、孔隙水和应力作用下砂岩的力学特性研究[D]. 武汉:中国科学院研究生院(武汉岩土力学研究所), 2006.
	ZHOU Qingchun. Study on the mechanical property of a sandstone under geothermal-mechanical and hydraulic-mechanical coupling[D]. Wuhan:Graduate University of Chinese Academy of Sciences (Wuhan Institute of rock and soil mechanics), 2006.
[27]	董光, 邓金根, 朱海燕, 等. 重复压裂前的地应力场分析[J]. 断块油气田, 2012, 19(4):485-488.
	DONG Guang, DENG Jingen, ZHU Haiyan, et al. Analysis of stress field before refracture treatment[J]. Fault Block Oil and Gas Field, 2012, 19(4):485-488.
[28]	江同文, 张辉, 徐珂, 等. 克深气田储层地质力学特征及其对开发的影响[J]. 西南石油大学学报(自然科学版), 2020, 42(4):1-12.
	JIANG Tongwen, ZHANG Hui, XU Ke, et al. Reservoir geomechanical characteristics and the influence on development in Keshen gas field[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2020, 42(4):1-12.
[29]	李玉飞, 付永强, 唐庚, 等. 地应力类型影响定向井井壁稳定的规律[J]. 天然气工业, 2012, 32(3):78-80.
	LI Yufei, FU Yongqiang, TANG Geng, et al. Laws of the effects of earth stress patterns on wellbore stability in a directional well[J]. Natural Gas Industry, 2012, 32(3):78-80.