A case study of drilling process monitoring for geomaterial strength assessment along hydraulic rotary drillhole

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2023-07-05 DOI:10.1007/s10064-023-03323-z

X. F. Wang, P. Peng, W. V. Yue, Z. G. Shan, Z. Q. Yue

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引用次数: 1

Abstract

It is challenging yet essential to identify the different processes and operations for the wide utilization of factual data during the current normal drilling. In this paper, the complete digital factual data of the hydraulic rotary drill project are recorded in real-time series along a 38-m-deep drillhole. A total of five processes with the associated individual operations are identified by the digitalization results as the inserting drill bit and rods process, the rotary stirring process, the hydraulic rotary coring process, the core cutting process, and the retrieving drill bit and rods process. The operations of net drilling can be selected by the statistical results from the hydraulic rotary coring process. According to the factual data, 461 linear zones and 10 geomaterial-type zones with the corresponding constant drilling speed are presented in the curve of bit advancement depth versus the net drilling time. The analysis results show that as the in situ mechanical property (or coring-resistant strength) of the drilled geomaterials increases, the corresponding constant drilling speed decreases. The spatial distributions of linear zones with similar constant drilling speeds can represent the stratum distributions of homogeneous geomaterial. The digitalization results provide the valuable reference for quantitative descriptions of the full hydraulic rotary drilling process and the in situ mechanical profile with the factual drilling data.

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液压旋转钻孔钻孔过程监测岩土材料强度评估实例研究

在当前的正常钻井过程中，为了广泛利用实际数据，确定不同的工艺和操作是一项挑战，但也是必不可少的。本文沿着38 m深的钻孔实时序列记录了液压旋钻工程的完整数字实际数据。数字化结果确定了五个过程和相关的单独操作，分别是插入钻头和杆过程、旋转搅拌过程、液压旋转取芯过程、岩心切割过程和回收钻头和杆过程。根据水力旋转取心的统计结果，可以选择网钻的作业方式。根据实际数据，钻头推进深度与净钻进时间的曲线共呈现出461个线性带和10个相应的恒定钻进速度的土材料型带。分析结果表明，随着钻孔岩土材料的原位力学性能(或抗取心强度)的增加，相应的恒定钻孔速度减小。近似恒定钻速的线状带的空间分布可以代表均匀地物的地层分布。数字化结果为全液压旋转钻井过程的定量描述和实际钻井数据的现场力学剖面提供了有价值的参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.