Drillability - an overview | ScienceDirect Topics
网页Drillability, in other words, may be measured by the drilling speed (centimeter per minute) at which a drill bit penetrates the rock mass. A drillability factor has been determined for all drilling conditions from a performance study of rock drilling jobs both in the field and in the laboratory (Table 22.6).
(PDF) Drillability Assessments in Hard Rock - ResearchGate
网页2017年10月11日 · Drillability is an important parameter in order to assess the influence that intact rock properties have on performance prediction and cost evaluations in connection with drill-and-blast...
Evaluation methods and standards for rock drillability in oil and …
网页2020年10月26日 · Rock drillability evaluation is a basic task for oil, gas, and geothermal drilling engineering design that includes bit design, bit selection, and drilling parameter optimization. Different tests and standards to evaluate rock …
Rock Drillability - SpringerLink
网页2024年1月1日 · Rock drillability is the degree of difficulty at which drill bit drills a hole in rock. It is a quantitative indicator that indicates the ability of rock to resist mechanical fragmentation and is the basis for rationally selecting drilling methods, drill bit specifications, and drilling regime parameters. It is also the basis for determining ...
Experimental Investigation of Rock Drillability for Three Rock …
网页2018年4月11日 · The drillability of rocks is a comprehensive reflection of geologic and engineering parameters related to the rock’s formation and the physical properties of drilling bits. It provides an important basis for optimizing drilling performance by choosing proper parameters and bits.
Rock Drillability - an overview | ScienceDirect Topics
网页2018年3月13日 · Rock drillability is defined as the ease of drilling a hole in the rock mass. Studies have shown that the drillability of rock and the penetration rate of a drill are affected by. 1. Rock hardness. 2. Rock texture and density. 3. Rock fracture pattern. 4. General structure of the formation/rock mass
Continuous rock drillability measurements using scratch tests ...
网页2017年11月1日 · Given the advantages of the scratch test, this paper, for the first time, proposes a technique for drillability measurement using scratch test. The new technique is developed by analyzing the force and correlating the specific energy measured from the scratch tests and the micro-drilling tests with PDC bit.
网页drillability is a significant indicator of rock-breaking difficulty. The evaluation of rock drillability is crucial for drilling engineering design, such as in drill-bit optimization and design and in
Compendious Index for Drillability: a rapid tool to assess drill ...
网页2023年2月20日 · The mean penetration rate increased by 83% with increased thrust and drill productivity enhanced up to 1.6 times with the proposed Compendious Index for Drillability (CID). Field-scale studies indicated that the CID has better explained the variance in field PR and bit life up to 76.7% compared to popularly used DRI and CHI indices.
A new approach to evaluate rock drillability of polycrystalline diamond ...
网页2020年2月19日 · This paper will focus on the evaluation of drillability which is a comprehensive index that indicates the ease of drilling a hole in the rock mass and serves as a main basis for drilling bit design, optimization of drilling operational parameters, and prediction of penetration rate of the bit (Anemangely et al., 2018).
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