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Index Geophysics

DRILL BITS FOR HORIZONTAL WELLS

Item

Title (Dublin Core)

eng DRILL BITS FOR HORIZONTAL WELLS
hrv DLIJETA ZA IZRADU VODORAVNIH BUŠOTINA

Description (Dublin Core)

eng This paper underlines the importance of the correct drill bit application in horizontal wells. Afler the analysis of the peculiarities of horizontal wells and drainholes drilling techniques, advantages and disadvantages of the application of both roller cone and fixed cutters drill bits have been discussed. Also, a review of the potential specific featuries useful for a correct drill bit selection in horizontal small diameter holes has been highlighted. Drill bits for these special applications, whose importance is quickly increasing nowadays, should be characterised by a design capable to deliver a good penetration rate low WOB, and, at the same time, be able to withstand high RPM without premature cutting structure failure and undergauge. Formation properties will also determine the cutting structure type and the eventual specific features for additional gauge and shoulder protection.
hrv Rad naglašava značenje uporabe odgovarajućih dlijeta u vodoravnim bušotinama. Nakon analize osobitosti tehnologije izrade vodoravnih i bočnih drenažnih bušotina, razmotrene su pogodnosti i nepogodnosti uporabe bilo žrvanjskih dlijeta, bilo tzv. kompaktnih, tj. dlijeta s nepokretnim sjekačima. Također, naglašeno su prikazani potencijali osobitih oblika pogodnih pri odabiru dlijeta za izradu vodoravnih bušotina malog promjera. Dlijeta za ove posebne namjene, čije se značenje u suvremenim uvjetima brzo povećava, karakterizirana su konstrukcijama koje omogućavaju velike napretke bušenja uz mala opterećenja dlijeta, a istovremeno izdrže i velike brzine okretanja bez brzog habanja radnih površina i bokova. Osobitosti bušenih stijena također određuju odabir strukture radnih površina i možebitne posebne oblike zaštite bokova dlijeta.

Creator (Dublin Core)

Macini, Paolo

Subject (Dublin Core)

eng horizontal well;drainhole;drill bit
hrv vodoravna bušotina;bočna drenažna bušotina;dlijeto

Publisher (Dublin Core)

Faculty of Mining, Geology and Petroleum Engineering University of Zagreb

Date (Dublin Core)

1996

Type (Dublin Core)

text
info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion

Format (Dublin Core)

application/pdf

Identifier (Dublin Core)

https://hrcak.srce.hr/13574
eng https://hrcak.srce.hr/file/20846

Source (Dublin Core)

Rudarsko-geološko-naftni zbornik
ISSN 1849-0409 (Online)
Volume 8
Issue 1

Language (Dublin Core)

eng

Rights (Dublin Core)

info:eu-repo/semantics/openAccess
The author and publisher rights are visible during the submission process, and ethical codex is available at http://hrcak.srce.hr/ojs/index.php/rgn/about/editorialPolicies#custom-0 .

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Publisher copyright policies & self-archiving is also described at Sherpa organisation web (RoMEO service) based at the University of Nottingham (http://www.sherpa.ac.uk/romeo/pub/2374/).

All volumes of the Bulletin (from 1989) are available at Hrčak journal pages (http://hrcak.srce.hr/rgn-zbornik?lang=en).