WO2013162488A3 - Wellbore drilling assembly - Google Patents

Wellbore drilling assembly Download PDF

Info

Publication number
WO2013162488A3
WO2013162488A3 PCT/UA2013/000044 UA2013000044W WO2013162488A3 WO 2013162488 A3 WO2013162488 A3 WO 2013162488A3 UA 2013000044 W UA2013000044 W UA 2013000044W WO 2013162488 A3 WO2013162488 A3 WO 2013162488A3
Authority
WO
WIPO (PCT)
Prior art keywords
cavitator
cylindrical portion
diameter
flow passage
diffuser
Prior art date
Application number
PCT/UA2013/000044
Other languages
French (fr)
Russian (ru)
Other versions
WO2013162488A2 (en
Inventor
Евгений Евгеньевич КОЗЛОВСКИЙ
Максим Евгеньевич КОЗЛОВСКИЙ
Иван Карпович МАНЬКО
Надежда Ивановна АЛЕКСАШИНА
Александр Любомирович СЕМКИВ
Original Assignee
ЛЮБИН, Павел Петрович
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ЛЮБИН, Павел Петрович filed Critical ЛЮБИН, Павел Петрович
Publication of WO2013162488A2 publication Critical patent/WO2013162488A2/en
Publication of WO2013162488A3 publication Critical patent/WO2013162488A3/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Abstract

The invention relates to mining and, more particularly, to devices for drilling wellbores in hard and ultra-hard rock. The wellbore drilling assembly comprises a drill string, which includes a rock cutting tool provided with through openings for the outlet of drilling fluid, a hydraulic vibrator, which has an interior cavitator in the form of a nozzle with a flow passage that comprises a cylindrical portion, with a critical diameter Dкр, and a flared portion, i.e. a diffuser, and a hollow body situated downstream of the cavitator. In the flow passage the length L of the cylindrical portion is L = 0.5-2.0 of the critical diameter Dкр, the total area S1 of the through openings in the rock cutting tool is 7-10 times greater than the area S of the cross-section of the cylindrical portion of the cavitator flow passage, and the expansion angle α of the diffuser in the flow passage is α = 10-180°. Mounted on the upper end of the cavitator there is a drilling fluid flow stabilizer in the form of a sleeve having an inside diameter d which is 2-3 of the critical diameter Dкр of the cylindrical portion of the cavitator and a length L1 which is 10-15 of the inside dimater d, wherein the diameter D2 of the hollow body of the hydraulic vibrator is equal to the diameter D1 of the outlet cross-section of the diffuser of the cavitator, and the length L2 of the hollow body of the hydraulic vibrator is not less than 90-110 of the critical diameter Dкр of the cylindrical portion of the cavitator. Technical result: reduced energy consumption and increased productivity.
PCT/UA2013/000044 2012-04-28 2013-04-26 Wellbore drilling assembly WO2013162488A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UA2012005342 2012-04-28
UAA201205342 2012-04-28

Publications (2)

Publication Number Publication Date
WO2013162488A2 WO2013162488A2 (en) 2013-10-31
WO2013162488A3 true WO2013162488A3 (en) 2014-01-09

Family

ID=47427511

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/UA2013/000044 WO2013162488A2 (en) 2012-04-28 2013-04-26 Wellbore drilling assembly

Country Status (2)

Country Link
EA (1) EA017845B1 (en)
WO (1) WO2013162488A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1617241A1 (en) * 1988-11-01 1990-12-30 Казахское Научно-Производственное Объединение "Казрудгеология" Gear for percussion-rotary drilling
SU1496351A1 (en) * 1987-03-04 1991-01-07 Специальное Конструкторско-Технологическое Бюро Института Технической Механики Ан Усср Method and apparatus for drilling well
RU2211320C2 (en) * 2000-08-28 2003-08-27 Меламед Юрий Александрович Method of pulse treatment of producing formations and well strainers and device for method embodiment
US7392857B1 (en) * 2007-01-03 2008-07-01 Hall David R Apparatus and method for vibrating a drill bit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU49886U1 (en) * 2005-09-19 2005-12-10 Лось Виталий Михайлович HYDRODYNAMIC VIBRATOR

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1496351A1 (en) * 1987-03-04 1991-01-07 Специальное Конструкторско-Технологическое Бюро Института Технической Механики Ан Усср Method and apparatus for drilling well
SU1617241A1 (en) * 1988-11-01 1990-12-30 Казахское Научно-Производственное Объединение "Казрудгеология" Gear for percussion-rotary drilling
RU2211320C2 (en) * 2000-08-28 2003-08-27 Меламед Юрий Александрович Method of pulse treatment of producing formations and well strainers and device for method embodiment
US7392857B1 (en) * 2007-01-03 2008-07-01 Hall David R Apparatus and method for vibrating a drill bit

Also Published As

Publication number Publication date
WO2013162488A2 (en) 2013-10-31
EA201200819A1 (en) 2012-12-28
EA017845B1 (en) 2013-03-29

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