地应力对页岩储层开发的影响与对策

doi:10.11743/ogg20200411

Abstract

Abstract:

The degree of shale oil and gas enrichment and rock brittleness are key to the successful development of shale oil and gas in North America; however, in addition to the above factors, the high in-situ stresses in a complex geological structure also serve as a main factor hindering the effective development of marine shale gas in the Sichuan Basin.This study focuses on explaining the mechanism of hydraulic fracture propagation under complex and high in-situ stresses and demonstrating the impact of unfavorable in-situ stress conditions on fracturing effectiveness.The results show that shale reservoirs in the Sichuan Basin have higher minimum principal stresses, causing very high formation breakdown pressures.Through theoretical analysis and case study, the optimized design of drilling and completion is proposed, including horizontal well drilling direction, wellbore trajectory, and selection of hydraulic fracturing intervals.Recommendations for drilling and completion of the Fuling, Weirong, and Weiyuan shale gas fields are proposed based on the various in-situ stresses in different areas of the Sichuan Basin.

Key words: on-azimuth well, horizontal principal stress, in-situ stress, breakdown pressure, hydraulic fracturing, shale reservoir

CLC Number:

TE321

Jincai Zhang, Yuanchang Qi. Impact of in-situ stresses on shale reservoir development and its countermeasures[J]. Oil & Gas Geology, 2020, 41(4): 776-783, 799.

Figures/Tables 8

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References 24

1	Zheng H R , Zhang J C , Qi Y C . Geology and geomechanics of hydraulic fracturing in the Marcellus shale gas play and their potential applications to the Fuling shale gas development[J]. Energy Geoscie-nce, 2020, 1 (1-2): 36- 46.
2	庹秀松, 陈孔全, 罗顺社, 等. 渝东大焦石坝地区差异构造变形[J]. 石油与天然气地质, 2019, 41 (5): 333- 340.
	Tu Xiusong , Chen Gongquan , Luo Shunshe , et al. Differential structural deformation of the Dajiaoshiba area, East Chongqing[J]. Oil & Gas Geology, 2019, 41 (5): 333- 340.
3	Peng S P , Zhang J C . Engineering geology for underground rocks[M]. Berlin Heidelberg: Springer, 2007: 46.
4	Haimson B , Fairhurst C . Initiation and extension of hydraulic fractures in rocks[J]. Society of Petroleum Engineers Journal, 1967, 7 (3): 310- 318.
5	Zhang Y S , Zhang J C , Yuan B , et al. In-situ stresses controlling hydraulic fracture propagation and fracture breakdown pressure[J]. Journal of Petroleum Science and Engineering, 2018, 164, 164- 173.
6	Kang H, Fan X, Huang Z, et al.Investigating the effect of cyclic loadi-ng on the breakdown pressure of the Xujiahe sandstone[C].54th US Rock Mechanics/Geomechanics Symp, Golden, Colorado, USA, 2020: ARMA 20-1127.
7	Warpinski N R , Teufel L W . In-situ stresses in low permeability, nonmarine rocks[J]. Journal of Petroleum Technology, 1989, 41 (4): 405- 414.
8	Zhang Y S , Zhang J C . Lithology-dependent minimum horizontal stress and in-situ stress estimate[J]. Tectonophysics, 2017, 703-704, 1- 8.
9	Hubbert M K , Willis D G . Mechanics of hydraulic fracturing[J]. Transactions of the AIME, 1957, 210 (1): 153- 168.
10	Ma X D.Zoback M.Lithology-controlled stress variations: A case study of the Woodford shale, Oklahoma[C]. Unconventional Resources Technology Conference, Austin, Texas, USA, 2017: URTEC-2689088-MS.
11	Dohmen T , Zhang J , Barker L , Blangy J P . Microseismic magnitudes and b-values for delineating hydraulic fracturing and depletion[J]. SPE Journal, 2017, 22 (5): 1624- 1634.
12	Daniels J L, Waters G A, Le Calvez J H, et al.Contacting more of the Barnett Shale through and integration of real-time microseismic monitoring, petrophysics, and hydraulic fracture design[C].SPE Annual Technical Conference and Exhibition, Anaheim, California, USA, 2007: SPE 110562-MS.
13	Zinn C J, Blood D, Morath P.Evaluating the impact of wellbore azimuth in the Marcellus Shale[C].SPE Eastern Regional Meeting, Columbus, Ohio, USA, 2011: SPE-149468-MS.
14	Zhang J C . Borehole stability analysis accounting for anisotropies in drilling to weak bedding planes[J]. International Journal Rock Mechanics and Mining Sciences, 2013, 60, 160- 170.
15	Pan Y J , Shen W B . Contemporary crustal movement of southeastern Tibet:Constraints from dense GPS measurements[J]. Scientific Reports, 2017, 7, 1- 7.
16	郭旭升, 胡东风, 魏志红, 等. 涪陵页岩气田的发现与勘探认识[J]. 中国石油勘探, 2016, 21 (3): 24- 37.
	Guo Xusheng , Hu Dongfeng , Wei Zhihong , et al. Discovery and exploration of Fuling shale gas field[J]. China Petroleum Exploration, 2016, 21 (3): 24- 37.
17	马永生, 蔡勋育, 赵培荣. 中国页岩气勘探开发理论认识与实践[J]. 石油勘探与开发, 2018, 45 (4): 561- 574.
	Ma Yongsheng , Cai Xunyu , Zhao Peirong . China's shale gas exploration and development:Understanding and practice[J]. Petroleum Exploration & Development, 2018, 45 (4): 561- 574.
18	刘尧文, 廖如刚, 张远, 等. 涪陵页岩气田井地联合微地震监测气藏实例及认识[J]. 天然气工业, 2016, 36 (10): 56- 62.
	Liu Yaowen , Liao Rugang , Zhang Yuan , et al. Application of surface-downhole combined microseismic monitoring technology in the Fuling shale gas field and its enlightenment[J]. Nature Gas Industry, 2016, 36 (10): 56- 62.
19	王玉芳, 翟刚毅, 王劲铸, 等. 四川盆地及周缘龙马溪组页岩产气效果影响因素[J]. 地质力学学报, 2017, 23 (4): 540- 547.
	Wang Yufang , Zhai Gangyi , Wang Jinzhu , et al. Factors influencing gas production effectiveness of Longmaxi Formation shale in Sichuan Basin and adjacent areas[J]. Journal of Geomechanics, 2017, 23 (4): 540- 547.
20	朱彤, 胡宗全, 刘忠宝, 等. 四川盆地湖相页岩气源-储配置类型及评价[J]. 石油与天然气地质, 2018, 39 (6): 1146- 1153.
	Zhu Tong , Hu Zongquan , Liu Zhongbao , et al. Types and evaluation of the source-reservoir configuration of lacustrine shale gas in the Sichuan Basin[J]. Oil & Gas Geology, 2018, 39 (6): 1146- 1153.
21	汪虎, 何治亮, 张永贵, 等. 四川盆地海相页岩储层微裂缝类型及其对储层物性影响[J]. 石油与天然气地质, 2019, 40 (1): 41- 49.
	Wang Hu , He Zhiliang , Zhang Yonggui , et al. Microfracture types of marine shale reservoir of Sichuan Basin and its influence on reservoir property[J]. Oil & Gas Geology, 2019, 40 (1): 41- 49.
22	彭勇民, 龙胜祥, 胡宗全, 等. 四川盆地涪陵地区页岩岩石相标定方法与应用[J]. 石油与天然气地质, 2016, 37 (6): 964- 970.
	Peng Yongmin , Long Shengxiang , Hu Zongquan , et al. Calibration method of shale petrological facies and its application in Fuling area, the Sichuan Basin[J]. Oil & Gas Geology, 2016, 37 (6): 964- 970.
23	王强, 魏祥峰, 魏富彬, 等. 川东南涪陵地区五峰组-龙马溪组页岩气藏中的超压作用[J]. 石油实验地质, 2019, 41 (3): 333- 340.
	Wang Qiang , Wei Xiangfeng , Wei funin , et al. Overpressure in shale gas reservoirs of Wufeng-Longmaxi Formations, Fuling area, southeastern Sichuan Basin[J]. Petroleum Geology & Experiment, 2019, 41 (3): 333- 340.
24	Evans K F , Engelder T , Plumb R A . Appalachian stress study:1.A detailed description of in situ stress variations in Devonian shales of the Appalachian Plateau[J]. Journal of Geophysical Research, 1989, 94 (B6): 7129- 7154.

偏方位角度β/(°)	破裂压力/MPa		与方位井比较破裂压力增加值/MPa		破裂压力增加的幅度/%
偏方位角度β/(°)	垂向射孔	水平射孔	垂向射孔	水平射孔	垂向射孔	水平射孔
0	66.2	68.2	0	0	0	0
15	67.8	69.4	1.6	1.2	2.4	1.8
30	72.2	72.7	6.0	4.5	9.1	6.6
45	78.2	77.2	12.0	9.0	18.1	13.2

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Impact of in-situ stresses on shale reservoir development and its countermeasures

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