WO2002075102A1 - Coulisses de forage actionnees vers le bas - Google Patents

Coulisses de forage actionnees vers le bas Download PDF

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Publication number
WO2002075102A1
WO2002075102A1 PCT/US2002/000669 US0200669W WO02075102A1 WO 2002075102 A1 WO2002075102 A1 WO 2002075102A1 US 0200669 W US0200669 W US 0200669W WO 02075102 A1 WO02075102 A1 WO 02075102A1
Authority
WO
WIPO (PCT)
Prior art keywords
mandrel
travel
tool
tool body
jarring
Prior art date
Application number
PCT/US2002/000669
Other languages
English (en)
Inventor
David E. Mouton
William J. Mouton, Jr.
Original Assignee
MOUTON, Elizabeth, Martin
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 MOUTON, Elizabeth, Martin filed Critical MOUTON, Elizabeth, Martin
Publication of WO2002075102A1 publication Critical patent/WO2002075102A1/fr

Links

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

Definitions

  • the apparatus of the present invention relates to jarring tools used in downhole drilling. More particularly, the present invention relates to an improved apparatus for jarring stuck tools, including pipe, downhole and a method of achieving same.
  • the process incorporates a drill string which comprises a plurality of threaded tubular members such as drill pipe being approximately 30 foot (9.144 meters) each in length, the drill pipe threaded end to end which is then used to rotate the drill bit either from the surface or through the use of a drill motor which would rotate the bit without the rotation of the drill pipe itself. Often times during that process, the drill string will become lodged at a certain point along its length within the borehole.
  • jarring tools as they currently utilize may be used to either jar the stuck or the lodged portion of pipe either in the up or down direction, depending on the makeup of the tool. In most cases, it would be more desirable to jar down on the pipe than to jar up. The reason for this is that drill pipe will usually get lodged when it is being pulled up as opposed to being moved downward, so jarring downward will more likely free the pipe. In such a case, the pipe is probably wedged against an obstruction caused by the upper movement of the pipe, and jarring upward may tend to wedge the debris around the section of pipe even tighter.
  • Methods of downward jarring which are currently used in the art includes applying compression on the drill string to which a down j ar has been attached, whereby the jar releases at a pre-set load, allowing the hammer of the jar to freely travel a short distance impacting the anvil of the tool, delivering a downward blow.
  • the effectiveness of this method has limitations, due to compressional buckling of the drill string, as well as drag. Therefore, it is often difficult to achieve a large downhole jarring force in a vertical well, and the problem is exacerbated in the horizontal portion of a directional drilling operation.
  • a jar in the upward direction can be attached to the top of the stuck pipe or tool, and the jar can be pulled upward until it is tripped.
  • the apparatus of the present invention solves the problems in the art in a simple and straight forward manner.
  • the apparatus would include a first member for attaching a first lower end of the apparatus to the upper end of the lodged tool or pipe through a threadable attachment; there would then be provided a second member for attaching a second end of the apparatus to a drill string on its upper end portion; there is further provided a third anvil or hammer member which is triggered by a spring having stored compressional force transferred by tension from the drill string to the apparatus when the drill string is pulled upward.
  • an actuator for rapidly releasing the tension force provided by the spring downward onto the stuck pipe in order to provide an impacting, downward force onto the pipe in an effort to dislodge the pipe.
  • a slow release mechanism for slowly releasing the tension force stored by the spring. Therefore, it is the principal object of the present invention to provide a tool for dislodging drill pipe down a borehole, which provides for a downward jarring on the stuck pipe or tool to facilitate dislodging of same;
  • Figure 1 illustrates an overall outer view of the preferred embodiment of the apparatus of the present invention as it would be attached to drill pipe above and the stuck pipe or object below the apparatus;
  • Figure 2 illustrates an outer view of the apparatus as seen in Figure 1 moving into the cocked position for firing
  • Figure 3 illustrates an outer view of the apparatus in Figure 1 fully cocked and ready to be fired in the bore hole;
  • Figures 4 and 5 illustrate views of the preferred embodiment of the apparatus of the present invention as it is fired to impart downward force on the drill pipe lodged in a borehole;
  • Figure 6A illustrates an exploded partial view of the three members of the apparatus as they relate to one another; while Figure 6B illustrates a partial cut away view of the jarring lower portion of the apparatus as it is being moved into the firing position,
  • Figure 7 illustrates a partial cut away view of the lower jarring portion of the apparatus of the present invention as it is ready to be fired
  • Figure 8 illustrates a partial cut away view of the lower jarring portion of the apparatus of the present invention at the point that the apparatus is fired;
  • Figures 9A and 9B illustrate views of the latching means used in the apparatus of the present invention
  • Figure 10 illustrates a partial view of the internal cut away provided in the tension member of the present invention
  • Figure 11 A illustrates a cross section view of the secondary metering system used in the jarring mechanism working in conjunction with the fluid reservoir in the present invention
  • Figures 1 IB and 11C illustrate the drill collars and tension tube utilized in the present invention
  • FIGS 12 through 14 illustrate views of an additional embodiment of the apparatus of the present invention. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
  • FIGS 1 through 11C illustrate the first preferred embodiment of the present invention by the numeral 10, as it would generally appear undertaking the process of dislodging a section of pipe or tools from the borehole.
  • apparatus 10 comprises three principal components.
  • the first component comprises an upper section or member 12 secured to tubing, such as a drill pipe, coil tubing, or wireline, depending on the type of tool lodged downhole.
  • tubing such as a drill pipe, coil tubing, or wireline, depending on the type of tool lodged downhole.
  • second lower member 16 secured to the tool or drill pipe lodged downhole
  • a third "jarring" member 27 comprising the hammer portion of the apparatus, which when fired, imparts downward force, striking the lower member 16 secured to the stuck tool or pipe.
  • FIG 1 there is illustrated apparatus 10 secured at the upper portion 12 to a section of drill pipe 14 and at it's lower portion 16 to a tool or a portion of drill pipe 18 which has become lodged down the borehole by formation 20.
  • the third "jarring member" 27 of apparatus 10 would further comprise a plurality, or preferably three drill collars 22, 24, 26, in succession, in order to provide the requisite amount of mass to the "jarring" member 27 of the apparatus when the jarring takes place, so as to free the stuck pipe 18.
  • FIG 2 there is illustrated a portion of the upper portion 12 which includes an actuator sub 30, including the tension tube 34, which is secured to the upper portion of drill pipe 14 through the upper attachment portion 32 of upper portion 12.
  • the upper attachment portion 32 is secured to the tension tube portion 34 which would be pulled upward to compress an internal spring (not illustrated), and to set the firing mechanism so that the jarring portion 27 of the apparatus is locked in place ready to fire as seen in Figure 3.
  • each flanged collar 80, 82 is provided with an O-ring 85 so as to maintain hydraulic fluid 81 within the reservoir during operation of the tool.
  • the piston 76 would include a check valve portion 84, having a one way check valve 86, so that as the piston 76 moved upward or downward, the check valve 86 positioned on a flanged collar 87 would allow the fluid to travel between those points above and below the flanged collar 87 so the piston may move upward rapidly but downward movement is retarded due to the metering action of the piston.
  • the piston 76 has been raised to a point where spring 68 is fully compressed and the tool is ready to fire.
  • the tension tube is lowered where upon the latch means 72 reaching the conical groove 90 in the wall of tension tube 34, the latch means 72 disengages from conical groove 70 in the wall of tension tube actuator 54, and moves into conical groove 90 in the wall of tension tube 34.
  • spring 68 is allowed to expand, and together with the mass provided by drill collars 22, 24, 26, provides significant downward force on the jarring member 27, so that the head 52 makes a substantial impact on the upper end of outer body 56, which imparts a downward jar to the stuck drill pipe 18.
  • the tension tube 34 allows free movement of the mass of the three drill collars 22, 24, 26, attached to the actuator portion 54 so that when the jarring function of the tool is undertaken as explained above, the drill string is isolated from potential damage that would occur if the upper tubing was directly attached to the jarring member 27. Furthermore, drag forces are minimized on the jarring system because of its independent movement.
  • FIGs 9A through 9C illustrate the latch mechanism 72 in its component parts. As seen if Figure 9 A, there is illustrated the latch means 72 positioned atop the piston body 76. There is also illustrated the concavity or conical groove 70 in body 56, in which the latch 72 is positioned. In this position, the tool is cocked and unfired, as seen in Figure 6B.
  • Figure 10 illustrates the groove 90 which is formed completely around the wall of tension tube 34, into which latch 72 would slide to trigger the apparatus, as discussed earlier in Figure 8.
  • recessed area 90 at point 94 would allow the driller to lower the drill string to fire the jar immediately with minimum loss of the spring member 68 compression due to the varying hydraulic bleed of the hydraulic metering system in place.
  • the actuator is lowered to its length, in the stroke, the compression in the spring 68 is maintained by the hydraulic pressure within hydraulic fluid reservoir 78, by means of a one-way check valve 84.
  • the latch mechanism 72 is then forced out of the way of the hydraulic piston 76, releasing the lower portion 42 of the tool 10 to impact the shoulder 40 of the jarring tool 52 at impact surface 38.
  • the hydraulic metering assembly will slowly uncock the spring 68 as the hydraulic fluid 81 within the reservoir 78 moves slowly from the lower portion to the upper portion of the reservoir. In this manner, the tension in the spring 68 will be released long before the jarring tool 52 reaches the surface eliminating a potential safety hazard.
  • FIG 8 there is illustrated the tool after the hammer 52 has fired and the latch means has moved from the cocked position set within opening 70, to the firing position after it is moved into opening 90.
  • the tension tube 34 must be lowered into position so that the latch 72 would reengaged into opening 70.
  • the hydraulic fluid 81 must be re-bled back into the lower portion of the reservoir 78.
  • Threaded connection 106 provides a means of assembly between the upper portion of mandrel 102 and the next portion of the mandrel.
  • This seal 114 allows spring means 107 to travel or, in the case of a compressible gas or liquid be compressed between a compressed state, as a high pressure means, to its released state as a low pressure means, while contained within cylinder 108 of tool 101.
  • Cylinder 108 is sealed off from the metering fluid 119 by seal 117.
  • the metering fluid 119 comprises a first metering volume 120 and release volume 121.
  • Triggering shoulder 129 separates the metering volume 120 from the release volume 121.
  • Shoulder 123 provides a slow metering means for metering volume 120 and also includes a one way valve 123a which allows fluid to travel below the shoulder 123, as the mandrel 102 is pulled upward to allow for rapid cocking of the tool.
  • Joint 124 provides connection for assembly, while filler port 125 provides a means for filling of metering fluid 119, into volumes 120 and 121.
  • Cap 126 seals the filler port 125 after the metering fluid is in
  • the tool 101 would be cocked from its first position, as seen in Figure 12, by an upward pull on mandrel 102 compressing and energizing spring means 107 as well as displacing shoulder 123 from the release volume 121 into the smaller area of the metering volume 120.
  • the mandrel Upon release of the upward pull of mandrel 102, because of the small area of the metering volume 120, and the one-way valve 123a, the mandrel travels slowly downward, in the direction of arrow 127, to allow time for the operator to place the tool 101 in compression, thereby allowing subsequent firing of the tool without imparting a load on the drill string attached at the upper end to mandrel 102.

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)

Abstract

L'invention concerne un appareil permettant de déloger des outils coincés en fonds de puits, qui comprend un corps d'outil; un mandrin (102) mobile dans ledit corps d'outil (101); un élément de ressort (68) permettant le déplacement dudit mandrin (102) dans le corps d'outil (101) lorsqu'il est actionné à l'aide d'une force de battage; un fluide d'actionnement (119) permettant le déplacement de ce mandrin (102) sur une partie de la distance de manière commandée, et l'accélération de ce déplacement au niveau d'un point prédéterminé afin de produire une force de battage contre le corps d'outil (101). Le fluide d'actionnement (119) comprend un premier et un second volumes (120, 121) dans lesquels une partie du mandrin (102) se déplace, le premier volume (120) permettant un déplacement commandé, et le second volume (121) permettant le déplacement accéléré dudit mandrin (102).
PCT/US2002/000669 2001-03-19 2002-01-11 Coulisses de forage actionnees vers le bas WO2002075102A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/811,811 US20010018974A1 (en) 1998-11-30 2001-03-19 Downward energized motion jars
US09/811,811 2001-03-19

Publications (1)

Publication Number Publication Date
WO2002075102A1 true WO2002075102A1 (fr) 2002-09-26

Family

ID=25207653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/000669 WO2002075102A1 (fr) 2001-03-19 2002-01-11 Coulisses de forage actionnees vers le bas

Country Status (2)

Country Link
US (1) US20010018974A1 (fr)
WO (1) WO2002075102A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7293614B2 (en) * 2004-09-16 2007-11-13 Halliburton Energy Services, Inc. Multiple impact jar assembly and method
US7533724B2 (en) * 2006-09-08 2009-05-19 Impact Guidance Systems, Inc. Downhole intelligent impact jar and method for use
US7775280B2 (en) * 2006-11-10 2010-08-17 Dwight Rose Jars for wellbore operations
US9631446B2 (en) 2013-06-26 2017-04-25 Impact Selector International, Llc Impact sensing during jarring operations
WO2014210400A2 (fr) 2013-06-26 2014-12-31 Impact Selector, Inc. Appareil à impact ajustable en fond de trou et procédés associés
NO340373B1 (no) * 2014-04-11 2017-04-10 Loxley Holding As Et kabeloperert slagverktøy for nedihullsoperasjoner og fremgangsmåte for å operere slagverktøyet
US9951602B2 (en) * 2015-03-05 2018-04-24 Impact Selector International, Llc Impact sensing during jarring operations

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846273A (en) * 1987-09-21 1989-07-11 Anderson Edwin A Jar mechanism accelerator
US4865125A (en) * 1988-09-09 1989-09-12 Douglas W. Crawford Hydraulic jar mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846273A (en) * 1987-09-21 1989-07-11 Anderson Edwin A Jar mechanism accelerator
US4865125A (en) * 1988-09-09 1989-09-12 Douglas W. Crawford Hydraulic jar mechanism

Also Published As

Publication number Publication date
US20010018974A1 (en) 2001-09-06

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