NO973843L - Method and tools for drilling a deviation well - Google Patents

Method and tools for drilling a deviation well

Info

Publication number
NO973843L
NO973843L NO973843A NO973843A NO973843L NO 973843 L NO973843 L NO 973843L NO 973843 A NO973843 A NO 973843A NO 973843 A NO973843 A NO 973843A NO 973843 L NO973843 L NO 973843L
Authority
NO
Norway
Prior art keywords
tool
drilling
flexible
drill
curvature
Prior art date
Application number
NO973843A
Other languages
Norwegian (no)
Other versions
NO973843D0 (en
Inventor
Douglas Hill
Volker Krueger
Larry Watkins
Harald Dueber
Thorsten Regener
Roger W Fincher
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of NO973843D0 publication Critical patent/NO973843D0/en
Publication of NO973843L publication Critical patent/NO973843L/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
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/067—Deflecting the direction of boreholes with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub

Abstract

Et roterbart og styrbart boreverktøy (10) har et bøyelig motor- statorhus (21) og eventuelt et bøyelig lagerhus (19). De bøyelige partier kan ha en redusert ytterdiameter eller øket innerdiameter, og de kan være utført av et materiale med forholdsvis høy flytegrense og lav elastisitetsmodul. Det er også vist en fremgangsmåte for bruk av verktøyet (10) til å bore alle seksjoner (5, 8, 9, 11, 13) av en avviks-brønnboring (3) fra avgreningen til den ønskete skråvinkel i et mål-reservoar. Verktøyet (10) har bare en vinkel, såsom en vinkel-rørdel (14), hvorved det kan rotere for boring av et rett hull og for å øke krumningsradien til et buet hull. Verktøyet (10) har også en fluiddrevet motor (12) som gjør det operabelt i operasjons-glidefasen for boring av en kort krumningsradius. Bøyeligheten gjør det mulig å anvende boreverktøyet (10) rundt krappere kurver, og roterbarheten setter verktøyet istand til å bore i begge operasjons- borefasene for fullføring av alle seksjoner av side-brønnboringen med et : enkelt verktøy.A rotatable and controllable drilling tool (10) has a flexible motor stator housing (21) and optionally a flexible bearing housing (19). The flexible portions may have a reduced outer diameter or increased inner diameter, and may be made of a material with relatively high yield strength and low modulus of elasticity. Also shown is a method of using the tool (10) to drill all sections (5, 8, 9, 11, 13) of a deviation wellbore (3) from the branch to the desired inclination angle in a target reservoir. The tool (10) has only one angle, such as an angular pipe portion (14), whereby it can rotate for drilling a straight hole and for increasing the radius of curvature of a curved hole. The tool (10) also has a fluid driven motor (12) which makes it operable in the operating slip phase for drilling a short radius of curvature. The flexibility makes it possible to use the drilling tool (10) around tighter curves, and the rotatability enables the tool to drill in both operational drilling phases to complete all sections of the side wellbore with a single tool.

NO973843A 1996-08-22 1997-08-21 Method and tools for drilling a deviation well NO973843L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2465896P 1996-08-22 1996-08-22
US3869897P 1997-02-19 1997-02-19

Publications (2)

Publication Number Publication Date
NO973843D0 NO973843D0 (en) 1997-08-21
NO973843L true NO973843L (en) 1998-02-23

Family

ID=26698724

Family Applications (1)

Application Number Title Priority Date Filing Date
NO973843A NO973843L (en) 1996-08-22 1997-08-21 Method and tools for drilling a deviation well

Country Status (4)

Country Link
CA (1) CA2213536A1 (en)
GB (1) GB2316427A (en)
NL (1) NL1006830C2 (en)
NO (1) NO973843L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2314856C (en) * 1999-08-04 2009-04-14 Bj Services Company Lateral entry guidance system
RU2261318C2 (en) * 2003-08-18 2005-09-27 Общество с ограниченной ответственностью фирма "Радиус-Сервис" Control device adapted to control angle and reactive moment of gerotor engine with spindle and drilling bit inside bended drilling string
US7861802B2 (en) * 2006-01-18 2011-01-04 Smith International, Inc. Flexible directional drilling apparatus and method
CN108894730A (en) * 2018-07-24 2018-11-27 徐芝香 There is the static pushing type rotary steerable tool of packet
CN108952575A (en) * 2018-07-24 2018-12-07 徐芝香 Torticollis static state directional type rotary steerable tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577701A (en) * 1984-08-08 1986-03-25 Mobil Oil Corporation System of drilling deviated wellbores
DE3804493A1 (en) * 1988-02-12 1989-08-24 Eastman Christensen Co DEVICE FOR SELECTING STRAIGHT OR DIRECTIONAL DRILLING IN UNDERGROUND STONE INFORMATION
US5368109A (en) * 1993-11-04 1994-11-29 Slim Dril International Inc. Apparatus for arcuate drilling

Also Published As

Publication number Publication date
CA2213536A1 (en) 1998-02-22
GB2316427A (en) 1998-02-25
GB9717927D0 (en) 1997-10-29
NL1006830C2 (en) 1998-07-08
NL1006830A1 (en) 1998-02-26
NO973843D0 (en) 1997-08-21

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