Multiple hydraulic fractures growth from a highly deviated well: A XFEM study

doi:10.1016/j.petrol.2021.109709

	Multiple hydraulic fractures growth from a highly deviated well: A XFEM study
	Zhou, Yun 2,3; Yang, Diansen 2,3; Tang, Meirong 1
刊名	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
	2022
卷号	208 页码:18
关键词	Highly deviated well Hydraulic fracturing XFEM Flow rate division Multiple fractures
ISSN号	0920-4105
DOI	10.1016/j.petrol.2021.109709
英文摘要	A fully coupled extended finite element (XFEM) model is presented to investigate the effect of different well types (highly deviated and horizontal wells) on simultaneous growth of multiple fractures. The importance of the use of deviated wells is briefly described and the governing equations for multi-cluster hydraulic fracturing in a saturated porous media are stated. The weak forms of both stress equilibrium and fluid mass continuity equations are turned into a system of linear equations through XFEM-type enrichments in space and Newmark scheme in time, which are solved by Newton-Raphson iteration method. In addition, the secant method is employed to impose the pressure continuity and mass conservation conditions at the fracture-well intersections. A numerical example with considering the simultaneous propagation of four hydraulic fractures is first adopted to validate the proposed numerical model. Several examples are then employed to investigate the influence of operational parameter, deviation angle, fracture spacing, placement and number on final fracture patterns. Numerical results show that coefficient of variation in multiple fracture heights for high-angle well is lower than that for horizontal well for all fracture placements. The opposite growth directions for two neighboring fractures, partially arising from the height difference at fracture-well intersection points, can reduce the stress shadow effect, thus promoting uniform growth of multiple fractures. Those results potentially unveil the causes for higher oil and gas production rates measured after multi-cluster hydraulic fracturing along highly deviated wells.
资助项目	National Natural Science Foundationof China[51879260] ; National Natural Science Foundationof China[51879258] ; National Natural Science Foundationof China[51991392] ; CAS Interdis-ciplinary Innovation Team[JCTD-2018-17] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; Hubei Provincial Natural Science Foundation of China[2018CFA012]
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000730086600001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/30930]
专题	中科院武汉岩土力学所
通讯作者	Yang, Diansen
作者单位	1.PetroChina Changqing Oilfield Co, Oil & Gas Technol Res Inst, Xian 710018, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yun,Yang, Diansen,Tang, Meirong. Multiple hydraulic fractures growth from a highly deviated well: A XFEM study[J]. JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,2022,208:18.
APA	Zhou, Yun,Yang, Diansen,&Tang, Meirong.(2022).Multiple hydraulic fractures growth from a highly deviated well: A XFEM study.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,208,18.
MLA	Zhou, Yun,et al."Multiple hydraulic fractures growth from a highly deviated well: A XFEM study".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 208(2022):18.