US3570611A - Device for freeing seized drill strings - Google Patents

Device for freeing seized drill strings Download PDF

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Publication number
US3570611A
US3570611A US796829A US3570611DA US3570611A US 3570611 A US3570611 A US 3570611A US 796829 A US796829 A US 796829A US 3570611D A US3570611D A US 3570611DA US 3570611 A US3570611 A US 3570611A
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US
United States
Prior art keywords
valve
casing
drilling fluid
drill string
seat
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US796829A
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English (en)
Inventor
Vladimir Riziuc
Silvestru Huelscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRUSTUL DEFORAJ PITESTI
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TRUSTUL DEFORAJ PITESTI
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 TRUSTUL DEFORAJ PITESTI filed Critical TRUSTUL DEFORAJ PITESTI
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Publication of US3570611A publication Critical patent/US3570611A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B31/005—Fishing for or freeing objects in boreholes or wells using vibrating or oscillating means

Definitions

  • the invention relates to a device for freeing a drill string seized in the bore hole by repeated hydraulical impacts at high frequency, applied to the drill string by a vibrating device acmated by the circulation of the drilling fluid.
  • the literature describes several devices to free a drill string seized by the walls of the bore hole, using a hydraulic vibrator introduced through the interior of the drill string. Such devices produce a series of vibrations or mechanical oscillations in the lower part of the seized drill string.
  • the devices consist of a piston valve assembly with unidirectional impact action, descent of the piston being damped by a cushion system and the closing of the drilling fluid circuit being realized by a valve and a helicoidal return spring.
  • the system according to the invention does away with this drawback by using simultaneously the mechanical action of hydraulic high frequency impacts with longitudinal and transverse vibration of the entire drill string, and the creation at the same frequency of pressure differences between the fluid inside the drill string and the fluid in the annular space in the bore surrounding the string;
  • the device consists of a cylindrical body, provided at the top part with an external thickened portion forming a valve.
  • This cylindrical body is extended at the bottom by screwing it into a second cylindrical part with a larger outside diameter than the outside diameter of the valve formed by the upper cylindrical body and having thicker walls at the upper part, its thickness being smaller at the lower part, where it contains a fixed piston.
  • the effective surface of this piston (corresponding to the inner diameter at the lower end of the cylindrical part) is larger than the diameter of the valve formed by the body of the upper cylinder.
  • the end of the fixed piston has a valve seat upon which, under the action of the drilling fluid, a kicking valve, elastically suspended by an helicoidal spring in the interior of the cylindrical part is supported by a perforated disc and guided by a jig bushing, so that simultaneously with fluid circulation along the lower part of the first cylindrical body resting with the respective valve upon the seat of the valve (and through the inside of the second cylindrical body pressing upon the kicking valve against the action of the sustaining spring), the valve is urged toward its seat producing inside the cylindrical body and in the drilling fluid column, a greater pressure than the pressure of the fluid below the valve produced by the upper cylindrical body and the kicking valve.
  • valve system Due to the diameter difference between the lower body of the second cylindrical body, movable upon the fixed piston, and the outside diameter of the upper cylindrical valve, the valve system is thrown upwards, till the upper cylindrical body rests upon a limiting part; this movement allows the drilling fluid to have access through the outside part of the mobile valve assembly towards the bore hole.
  • the downward return back of the valve assembly results from the reaction received from the limiting part, provided with an elastic element, and also due to the impingement force of the drilling fluid and to the weight of the entire valve assembly.
  • FIGURE is a sectional view through the device.
  • the vibrating outfit consists of a cylindrical body 1 so dimensioned that it can be inserted through the interior of the drill pipe, being provided inside with a threshold or step a and at the ends with two threaded bushings b and 0.
  • a movable double valve system (assembly) is mounted inside the body l consisting of an upper cylindrical body 2, provided at its upper part with a thickened portion d and with a valve seat e.
  • the upper cylindrical body 2 at its lower part, has a tenon f for joining with a second cylindrical part 3, consisting of an upper cylindrical part or apron with thick walls 3 and a lower part h, with thin walls.
  • a kicking valve 4 is mounted in a supporting and guiding part 5 in the form of a perforated disc with an helicoidal spring 6 and a fixing part 7, the supporting and guiding part 5 being provided with circulating orifices i and the helicoidal spring 6 having the task to maintain the valve 4 in its opened position.
  • the thickened portion d of the upper cylindrical body 2 rests upon the seat 8, fixed on the threshold a of the body I.
  • the seat 8 is provided with three elastic sealing rings 9.
  • the piston 10 has at its top end a seat j upon which sits the valve 4 and is provided further with a thickening in which four circulation windows k have been cut, a threaded zone c for assembling the bushing, a threshold I for attachment to the upper part of the drill stem and a cylindrical part m provided with sealing rings 11, which enter in the central canal of the drill stern and form a sealing and guiding part for the device.
  • the cylindrical parts 2 and 3 define the mobile assembly of the device which slides axially in the body l, the stroke being adjustable and limited by a limiting part 12.
  • the limiting part 12 consists of a metallic core provided with three ribs n a central canal o and a cylindrical portion p.
  • the limiting part 12 is supported by the lower part of the cylindrical portion p on a spacer ring 13, which has windows r for the circulation of the drilling fluid.
  • an extractor 14 provided with inner grooves r is screwed in.
  • the extractor l4 finishes with a threaded tenon which is assembled in the bushing b and has at its lower part a seat into which an elastic damping gasket 15 is introduced.
  • the seat 8, the spacer ring 13 and the elastic gasket 15 are fixed inside the body 1 by tightening the extractor 14.
  • an elastic guiding is constituted by four elastic lamellae 16, a fastening collar 17, fixed upon the extractor 14 by screwing and an upper part 18, screwed in at the upper part of the extractor 14, provided with a inner development t to allow the fastening of the elastic lamellae 16.
  • the elastic guide serves to moderate the ball of the device, when introduced into the string, and the extractor 14 for allowing extraction of the device with a slip socket, introduced with a cable through the drilling string.
  • the vibrator is thrown through the drill pipe, the free-fall velocity being controlled by the lamellae 16 of the elastic guide.
  • the cylindrical portion m of the fixed piston 10 arrives into the central canal of the drill collar and the threshold 1, which has a larger diameter, rests upon the upper part of the central canal, preventing the drilling fluid from passing through the annular space between drill pipe and the device.
  • the drilling fluid passes through: the inside of extractor M, the outside of the limiting part 12, the inside of upper cylindrical body 2, the orifices i of guiding part 5, and presses the kicking valve 4 onto the seat j.
  • the drilling fluid circuit is thus interrupted.
  • the resulting hydraulical impact is transmitted through the body 0 and the piston 10 to the drill collars.
  • the increase of pressure is transmitted also to the inside surfaces of the zone h of the cylindrical part 3.
  • the surface of this zone h being larger than the surface of the thickened portion d of the upper cylindrical body 2 and the pressure of the drilling fluid being equal to the hydrostatic pressure in the annular space under the seat 8 between the outside of the movable valve assembly and the body 1, the movable double valve will be raised from the seat 8, raising the thickened portion d from seat 8;.
  • the outside circulation circuit is opened letting the drilling fluid pass through the annular space between the cylindrical bodies 2 and 3 and the body 1 and enter through the windows It into the central canal of the fixed piston, the circuit being continued through the drillbit and the annular space in the borehole to the soil.
  • the upwards movement of the mobile double valve assembly is stopped at the moment at which the seat e of the upper cylindrical body 2 meets the lower part of the limiting part 12.
  • the impact received by the limiting part 12 is taken over by the elastic string and by the effect of reaction, of its own weight and of the carrying away by the circulating drilling fluid, the mobile double valve assembly is projected downwards coming into its initial position, movement in which the operation cycle starts again; the number of cycles being proportional to the drilling fluid discharge, the frequency being about 1200 vibrations per minute.
  • the method and the outfit, according to the invention has the advantage that they assure a rapid and immediate overhauling of wells by simply throwing the outfit through the drill pipes frecing thus rapidly the seized drilling string, by an intricate mechanical and hydraulical action with high frequency.
  • a device for facilitating the extraction of a drill string from a bore comprising:
  • tubular casing slidable in said drill string and formed at a lower end with a movable tubular member for passage of a drilling fluid below said device through the interior of said casing, said casing being formed with an annular valve seat at an intermediate location along its length and said member being provided with a tubular massive valve body engageable with said seat in a lower extreme position of said member for blocking the flow of drilling fluid through said casing except for the flow through said tubular member;
  • a spring-biased normally open kicker valve at the lower end of said member, said casing being provided with a further valve seat cooperating with said kicker valve for obstructing the flow of fluid from said member through said casing, said member and said casing defining a throttle passage for bleeding drilling fluid past said kicker valve in a closed position thereof under the pressure of drilling fluid in said member, said member forming a differential piston in a closed condition of said kicker valve tending to drive the member upwardly under the pressure of said fluid.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
US796829A 1968-02-09 1969-02-05 Device for freeing seized drill strings Expired - Lifetime US3570611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO5582468 1968-02-09

Publications (1)

Publication Number Publication Date
US3570611A true US3570611A (en) 1971-03-16

Family

ID=20086650

Family Applications (1)

Application Number Title Priority Date Filing Date
US796829A Expired - Lifetime US3570611A (en) 1968-02-09 1969-02-05 Device for freeing seized drill strings

Country Status (4)

Country Link
US (1) US3570611A (ru)
DE (1) DE1906530A1 (ru)
FR (1) FR2001620A1 (ru)
GB (1) GB1250077A (ru)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020091A1 (en) * 1979-06-04 1980-12-10 Intorala Ltd. Drilling jar
US4807709A (en) * 1986-10-06 1989-02-28 Pioneer Fishing And Rental Tools, Inc. Fluid Powered drilling jar
US4890682A (en) * 1986-05-16 1990-01-02 Shell Oil Company Apparatus for vibrating a pipe string in a borehole
US4958690A (en) * 1987-02-25 1990-09-25 Salzgitter Maschinenbau Gmbh Drilling device with hydraulic percussion generator for earth drilling purposes
US5056609A (en) * 1988-08-26 1991-10-15 Rear Ian G Valve assembly for a downhole to remove bore hole subsidence
US5564510A (en) * 1993-12-15 1996-10-15 Walter; Hans-Philipp Pneumatic drill hammer
US6164393A (en) * 1996-10-30 2000-12-26 Bakke Technology As Impact tool
US6206101B1 (en) * 1996-06-07 2001-03-27 Bakke Technology As Method and device for facilitating the insertion of a coiled tube into a well and for loosening stuck objects in a well
US6571870B2 (en) * 2001-03-01 2003-06-03 Schlumberger Technology Corporation Method and apparatus to vibrate a downhole component
US20060054322A1 (en) * 2004-09-16 2006-03-16 Rose Lawrence C Multiple impact jar assembly and method
US20100276204A1 (en) * 2009-05-01 2010-11-04 Thru Tubing Solutions, Inc. Vibrating tool
US10385617B2 (en) * 2011-08-19 2019-08-20 Hammergy As High frequency fluid driven drill hammer percussion drilling in hard formations

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0021743D0 (en) * 2000-09-05 2000-10-18 Andergauge Ltd Downhole method
FR3107280B1 (fr) 2020-02-19 2023-01-13 Arkema France Composition comprenant un composé iodofluorocarbure
CN111577134B (zh) * 2020-05-19 2021-10-12 西南石油大学 一种基于液压驱动的弹性复合分频控制系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861042A (en) * 1930-04-28 1932-05-31 John A Zublin Rotary bit with hammering device
US3038548A (en) * 1957-11-06 1962-06-12 Bowen Itco Inc Hydraulically operable percussion jar
US3180433A (en) * 1961-08-24 1965-04-27 James C Mason Hydraulic jarring tool
US3185227A (en) * 1962-03-02 1965-05-25 Nelson Norman A Well drilling apparatus
US3213941A (en) * 1962-02-01 1965-10-26 Nelson Norman A Method of and apparatus for releasing stuck pipe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861042A (en) * 1930-04-28 1932-05-31 John A Zublin Rotary bit with hammering device
US3038548A (en) * 1957-11-06 1962-06-12 Bowen Itco Inc Hydraulically operable percussion jar
US3180433A (en) * 1961-08-24 1965-04-27 James C Mason Hydraulic jarring tool
US3213941A (en) * 1962-02-01 1965-10-26 Nelson Norman A Method of and apparatus for releasing stuck pipe
US3185227A (en) * 1962-03-02 1965-05-25 Nelson Norman A Well drilling apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0020091A1 (en) * 1979-06-04 1980-12-10 Intorala Ltd. Drilling jar
US4890682A (en) * 1986-05-16 1990-01-02 Shell Oil Company Apparatus for vibrating a pipe string in a borehole
US4807709A (en) * 1986-10-06 1989-02-28 Pioneer Fishing And Rental Tools, Inc. Fluid Powered drilling jar
US4958690A (en) * 1987-02-25 1990-09-25 Salzgitter Maschinenbau Gmbh Drilling device with hydraulic percussion generator for earth drilling purposes
US5056609A (en) * 1988-08-26 1991-10-15 Rear Ian G Valve assembly for a downhole to remove bore hole subsidence
US5564510A (en) * 1993-12-15 1996-10-15 Walter; Hans-Philipp Pneumatic drill hammer
US6206101B1 (en) * 1996-06-07 2001-03-27 Bakke Technology As Method and device for facilitating the insertion of a coiled tube into a well and for loosening stuck objects in a well
US6164393A (en) * 1996-10-30 2000-12-26 Bakke Technology As Impact tool
US6571870B2 (en) * 2001-03-01 2003-06-03 Schlumberger Technology Corporation Method and apparatus to vibrate a downhole component
US20040055744A1 (en) * 2001-03-01 2004-03-25 Shunfeng Zheng Method and apparatus to vibrate a downhole component
US6907927B2 (en) 2001-03-01 2005-06-21 Schlumberger Technology Corporation Method and apparatus to vibrate a downhole component
US20060054322A1 (en) * 2004-09-16 2006-03-16 Rose Lawrence C Multiple impact jar assembly and method
US7293614B2 (en) 2004-09-16 2007-11-13 Halliburton Energy Services, Inc. Multiple impact jar assembly and method
US20100276204A1 (en) * 2009-05-01 2010-11-04 Thru Tubing Solutions, Inc. Vibrating tool
US10385617B2 (en) * 2011-08-19 2019-08-20 Hammergy As High frequency fluid driven drill hammer percussion drilling in hard formations

Also Published As

Publication number Publication date
GB1250077A (ru) 1971-10-20
FR2001620A1 (ru) 1969-09-26
DE1906530A1 (de) 1969-12-04

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