NO20073009L - Liquid pressure activated sequence valve for axially acting impact tool - Google Patents

Liquid pressure activated sequence valve for axially acting impact tool

Info

Publication number
NO20073009L
NO20073009L NO20073009A NO20073009A NO20073009L NO 20073009 L NO20073009 L NO 20073009L NO 20073009 A NO20073009 A NO 20073009A NO 20073009 A NO20073009 A NO 20073009A NO 20073009 L NO20073009 L NO 20073009L
Authority
NO
Norway
Prior art keywords
valve
sequence valve
liquid pressure
ring
impact tool
Prior art date
Application number
NO20073009A
Other languages
Norwegian (no)
Inventor
Per Olav Haughom
Original Assignee
I Tec As
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 I Tec As filed Critical I Tec As
Priority to NO20073009A priority Critical patent/NO20073009L/en
Priority to PCT/NO2008/000203 priority patent/WO2008153406A1/en
Publication of NO20073009L publication Critical patent/NO20073009L/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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
    • E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
    • E21B31/1135—Jars with a hydraulic impedance mechanism, i.e. a restriction, for initially delaying escape of a restraining fluid

Abstract

Foreliggende oppfinnelse vedrører en væsketrykkaktiverbar sekvensventil til bruk ved generering av oscillerende aksiale hammerbevegelser, der sekvensventilen omfatter en ventilkonstruksjonen som omfatter en ytre rørmantel (1) som forbundet med adaptere (3) og (5) i hver ende, en indre langstrakt konsentrisk opplagret sylindrisk rørdel (1 2) omfattende en ventilflate (1 8), et ringelement (7) omfattende en ventilflate (8) samt en ringventil (17) omfattende en ventilflate (22). Oppfinnelsen er særpreget ved at den væsketrykkaktiverbare sekvensventils vesketrykkpåvirkede ringarealer (A2, A3, A4) og trykkdifferanse tilfredsstiller følgende relasjon: A3/A4 (1- Fs /A2 P) > 1 der: P er et væsketrykk som føres inn gjennom hull (9, 20) fra strengdelen (12) og genererer en aksialkraft (Fh) ved å virke over ringarealet (A2), og Fs er kraften som genereres i en fjær (14).BACKGROUND OF THE INVENTION The present invention relates to a fluid pressure activatable sequence valve for use in generating oscillating axial hammer movements, wherein the sequence valve comprises a valve structure comprising an outer tubular sheath (1) connected to adapters (3) and (5) at each end, an inner elongated concentric cylindrical tubular portion. (1 2) comprising a valve surface (18), a ring element (7) comprising a valve surface (8) and a ring valve (17) comprising a valve surface (22). The invention is characterized in that the fluid pressure-actuated ring valve's actuated ring areas (A2, A3, A4) and pressure difference satisfy the following relationship: A3 / A4 (1- Fs / A2 P)> 1 where: P is a liquid pressure introduced through holes (9, 20) from the string member (12) and generates an axial force (Fh) by acting over the annular area (A2), and Fs is the force generated in a spring (14).

NO20073009A 2007-06-13 2007-06-13 Liquid pressure activated sequence valve for axially acting impact tool NO20073009L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO20073009A NO20073009L (en) 2007-06-13 2007-06-13 Liquid pressure activated sequence valve for axially acting impact tool
PCT/NO2008/000203 WO2008153406A1 (en) 2007-06-13 2008-06-05 Liquid pressure driven sequential valve for axially operative jar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20073009A NO20073009L (en) 2007-06-13 2007-06-13 Liquid pressure activated sequence valve for axially acting impact tool

Publications (1)

Publication Number Publication Date
NO20073009L true NO20073009L (en) 2008-12-15

Family

ID=40129902

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20073009A NO20073009L (en) 2007-06-13 2007-06-13 Liquid pressure activated sequence valve for axially acting impact tool

Country Status (2)

Country Link
NO (1) NO20073009L (en)
WO (1) WO2008153406A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9644441B2 (en) 2014-10-09 2017-05-09 Impact Selector International, Llc Hydraulic impact apparatus and methods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4865125A (en) * 1988-09-09 1989-09-12 Douglas W. Crawford Hydraulic jar mechanism
NO304199B2 (en) * 1996-10-30 1998-11-09 Weatherford Norge As Hydraulic impact tool
NO324184B1 (en) * 2004-06-29 2007-09-03 Welldeco As Device for impact hammer for use in coil drilling
NO325972B1 (en) * 2005-06-27 2008-08-25 Hav Technology As Device for hammer hammer valve for use in coiled drilling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9644441B2 (en) 2014-10-09 2017-05-09 Impact Selector International, Llc Hydraulic impact apparatus and methods

Also Published As

Publication number Publication date
WO2008153406A1 (en) 2008-12-18

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application
FC2A Withdrawal, rejection or dismissal of laid open patent application