Fluid-solid coupling simulation of a new hydraulic self-adaptive PDC cutter for improving well-drilling efficiency in complex formations

doi:10.1016/j.egyr.2021.08.200

	Fluid-solid coupling simulation of a new hydraulic self-adaptive PDC cutter for improving well-drilling efficiency in complex formations
	Shi, Libao 2,3; Zou, Deyong 3; He, Zhenguo 2; Gao, Dapeng 1
刊名	ENERGY REPORTS
	2021-11-01
卷号	7 页码:5885-5894
关键词	New PDC bit SAPC Fluid-solid coupling Numerical simulation
ISSN号	2352-4847
DOI	10.1016/j.egyr.2021.08.200
通讯作者	Gao, Dapeng(gaodapeng@imech.ac.cn)
英文摘要	A new type of hydraulic self-adaptive polycrystalline-diamond-compact (PDC) cutter (SAPC) is designed for controlling cutting depth of the PDC bit flexibly and reducing the harm of stick-slip vibration to drilling operation. The fluid-solid coupling movement of SAPC under different well-drilling conditions are simulated and analyzed. The results show that the up-going time of SAPC can be increased by reducing the diameter of the thin connecting pipe, increasing the diameter of the SAPC liquid-cavity, increasing the height of the cavity, increasing the liquid viscosity and increasing the initial spring force/decreasing the elasticity coefficient. Among them, reducing the diameter of thin connecting pipeline and increasing cavity diameter are the most sensitive. The up-going time can also be increased by the way of changing liquid viscosity without changing the structure of SAPC. Increasing the initial spring force and decreasing the elasticity coefficient can also increase the up-going time of the SAPC, however, the response window to the linkage force is reduced. The double-pipeline embedded SAPC can effectively reduce the volume and installation difficulty. The reasonable thin pipeline diameter is 0.2-0.5 mm, and the thick pipeline diameter is more than 2 mm, and the cavity diameter is more than 18 mm. Based on the results of the numerical simulation study, the up-going time of the SAPC is designed over 1.25 s, which meets the performance requirements of the hydraulic SAPC using in complex reservoir drilling, such as carbonate-sandstone reservoir. (C) 2021 The Authors. Published by Elsevier Ltd.
WOS关键词	BIT
WOS研究方向	Energy & Fuels
语种	英语
WOS记录号	WOS:000700084700003
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87596]
专题	力学研究所_职能与支撑部门
通讯作者	Gao, Dapeng
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing, Peoples R China 2.PetroChina Res Inst Petr Explorat & Dev, Beijing, Peoples R China 3.China Univ Petr East China, Qingdao, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Shi, Libao,Zou, Deyong,He, Zhenguo,et al. Fluid-solid coupling simulation of a new hydraulic self-adaptive PDC cutter for improving well-drilling efficiency in complex formations[J]. ENERGY REPORTS,2021,7:5885-5894.
APA	Shi, Libao,Zou, Deyong,He, Zhenguo,&Gao, Dapeng.(2021).Fluid-solid coupling simulation of a new hydraulic self-adaptive PDC cutter for improving well-drilling efficiency in complex formations.ENERGY REPORTS,7,5885-5894.
MLA	Shi, Libao,et al."Fluid-solid coupling simulation of a new hydraulic self-adaptive PDC cutter for improving well-drilling efficiency in complex formations".ENERGY REPORTS 7(2021):5885-5894.