{"id":2707,"date":"2023-05-18T16:15:42","date_gmt":"2023-05-18T13:15:42","guid":{"rendered":"http:\/\/itm.dp.ua\/?page_id=2707"},"modified":"2025-07-02T14:06:35","modified_gmt":"2025-07-02T11:06:35","slug":"technology-of-vibratory-rotary-drilling-with-the-use-of-drilling-assemblies-with-high-frequency-cavitation-hydrovibrator","status":"publish","type":"page","link":"http:\/\/itm.dp.ua\/?page_id=2707&lang=en","title":{"rendered":"Technology of vibratory-rotary drilling with the use of drilling assemblies with high-frequency cavitation hydrovibrator"},"content":{"rendered":"\n

Purpose<\/em><\/strong><\/p>\n\n\n\n

Enhanced efficiency of the rotary drilling of holes 36 mm to 250 mm in diameter through various rocks.<\/p>\n\n\n\n

Essence of the technology<\/em><\/strong><\/p>\n\n\n\n

The imposition of high-frequency, high-amplitude vibrations on the rock-cutting tool and the generation of a pulsating drilling mud flow.<\/p>\n\n\n\n

Advantages<\/em><\/strong><\/p>\n\n\n\n

The freedom from springs and moving parts, the enhanced reliability of the drilling assembly, and the moderate overall dimensions make it possible to drill deep holes using vibratory-rotary drilling. The cavitation hydrovibrator needs no depth control of its operation. The cavitation hydrovibrator imparts to the rock-cutting tool longitudinal vibration accelerations of peak-to-peak amplitude 50g to 15,000g in the frequency range 100 to 10,000 Hz. The cavitation hydrovibrator (Fig. 1) is mounted in the drilling string ahead of the rock-cutting tool or over the core barrel.<\/p>\n\n\n\n

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Fig.1 High-frequency cavitation hydrovibrator<\/figcaption><\/figure>\n\n\n\n

Operational testing<\/em><\/strong><\/p>\n\n\n\n

Testing on an experimental drilling ground has shown that the cavitation hydrovibrator offers a 60 to 70 percent increase in penetration speed, a more than twofold increase in rock-cutting tool durability, and a higher recovery of core in drilling trough fissured rocks.<\/p>\n\n\n\n

Possible users<\/em><\/strong><\/p>\n\n\n\n

Drilling companies in different countries and drilling equipment makers.<\/p>\n\n\n\n

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Time history of the pressure and vibration accelerations during the operation of the high-frequency oscillation generator. \u04202<\/sub> – pressure at the generator outlet; \u04302<\/sub> – vibration acceleration on the hydrovibrator body; \u04303<\/sub> – vibration acceleration on the rock-cutting tool<\/figcaption><\/figure>\n\n\n\n
Contact information:<\/strong><\/td><\/tr>
Institute of Technical Mechanics of the NASU and SSAU<\/strong><\/td><\/tr>
Ukraine 49005<\/strong>
Dnipro<\/strong>
15 Leshko-Popel St.<\/strong><\/td><\/tr>
Contact person:<\/strong><\/td>O. D. Nikolayev<\/td><\/tr>
Phone:<\/strong><\/td>(056) 372 06 40<\/td><\/tr>
E-mail:<\/strong><\/td>office.itm@nas.gov.ua<\/a><\/td><\/tr>
Web:<\/strong><\/td>http:\/\/www.itm.dp.ua<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"

Purpose Enhanced efficiency of the rotary drilling of holes 36 mm to 250 mm in diameter through various rocks. Essence of the technology The imposition of high-frequency, high-amplitude vibrations on…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-2707","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/pages\/2707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/itm.dp.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2707"}],"version-history":[{"count":8,"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/pages\/2707\/revisions"}],"predecessor-version":[{"id":5888,"href":"http:\/\/itm.dp.ua\/index.php?rest_route=\/wp\/v2\/pages\/2707\/revisions\/5888"}],"wp:attachment":[{"href":"http:\/\/itm.dp.ua\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}