EP0866209B1 - Elément d'un train de tiges de forage rotatif - Google Patents
Elément d'un train de tiges de forage rotatif Download PDFInfo
- Publication number
- EP0866209B1 EP0866209B1 EP98400538A EP98400538A EP0866209B1 EP 0866209 B1 EP0866209 B1 EP 0866209B1 EP 98400538 A EP98400538 A EP 98400538A EP 98400538 A EP98400538 A EP 98400538A EP 0866209 B1 EP0866209 B1 EP 0866209B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill
- stem
- string
- member according
- groove
- 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
Links
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 description 52
- 239000012530 fluid Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 239000004459 forage Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1057—Centralising devices with rollers or with a relatively rotating sleeve
- E21B17/1064—Pipes or rods with a relatively rotating sleeve
Definitions
- the present invention relates to an element of a rod train of rotary drilling.
- Such rod trains can in particular make it possible to produce deviated boreholes, i.e. boreholes whose inclination can be varied from vertical or azimuth direction, during drilling.
- the contact surface between the drill string and the wall of the hole is limited to the contact areas of the cuffs immobilized in rotation with the wall of the borehole, the sleeves having an outside diameter outside all greater than the diameter of the drill string rods.
- the sleeves On the outer surface of the cuffs immobilized in rotation are provided grooves which can be helical in shape and which allow circulation drilling mud in the ring finger between the wall of the drilling hole drill and drill string. Because they are immobilized in rotation, the sleeves do not activate circulation of drilling fluid causing debris produced by the drilling tool.
- the role of the devices known therefore is limited to a reduction of the friction between the rods and the hole drilling.
- US-5,040,620 describes an element of a drill pipe train comprising, on its external surface, helical grooves whose cross-section transverse has an undercut part. This element presents an external surface of constant diameter, so that it rests on the wall of the borehole along its entire length, during drilling, which does not not limit the friction of the drill string.
- US-4,995,466 describes a stabilizer for a drill string comprising at least one cuff bearing on the drilling which is rotatably mounted on an integral tubular stabilizer body of the drill string and which can be immobilized in rotation by a mechanism actuating.
- the object of the invention is therefore to propose an element of a train of rotary drilling rods comprising at least one tubular section the external surface of which has at least one groove arranged in a propeller having as axis the section axis and having a cross section by a plane perpendicular to the axis of the section, having a part in undercut located behind a radius of the cross section of the section passing through the outer end of the groove section located at the back of the groove, considering the direction of rotation of the rod train, this rod train element enabling the circulation of the fluid to be activated and drilling debris, improve the cleaning of the ring finger of the drilling hole and reduce friction between the drill string and the borehole.
- the cross section of the groove which is asymmetrical is delimited at the back of the groove by a substantially straight line making a negative undercut angle with the radius of the section transverse of the section, and it further comprises an adjacent support part to the tubular section whose maximum external diameter is at less equal to the maximum diameter of the drill string rods.
- the invention relates in particular to an element of a train of rod drilling constituting an intermediate connection between two rods and comprising a rotary section provided with means for connection to the drill pipes the external surface of which has a groove having a cross section with an undercut part.
- the invention also relates to an element of a rod train of borehole consisting of a drill pipe having at least two sections along its length having an outer surface having a groove whose the cross section includes an undercut portion.
- the drill string element according to the first embodiment shown in Figures 1, 1A and 1B is made in the form of a intermediate connection between two rods of a drill string.
- the intermediate fitting generally designated by the reference 1, comprises a tubular body 2 consisting of two parts 2a, 2b fixed in the axial extension of each other by screwing and a sleeve 3 mounted on the body 2 of the connector 1 with a certain radial play and immobilized in translation between the parts 2a and 2b of the body 2.
- the part 2a of the body 2 constitutes the lower part of the fitting and has a tapered tapered portion 4a for connecting part 2a of connection 1 to a rod of the drill string located downwards with respect to the intermediate fitting 1, i.e. in the direction of the tool drill set at the end of the drill string.
- the part 2b of the body 2 constitutes the upper part of the fitting and has a tapered tapered opening 4b for connect the intermediate fitting 1 to a rod of the drill string arranged above the intermediate connection 1, i.e. in the direction of the surface from which drilling is carried out.
- the part 2a of the body 2 comprises moreover, at its end opposite to the threaded part 4a, a second threaded part and the second part 2b of the body 2 of the connector 1 has a second tapped opening at its end opposite the end comprising the tapped opening 4b.
- the two parts 2a and 2b of the body 2 of the fitting 1 can be assembled together by screwing the second threaded end of part 2a inside the second opening threaded from the upper part 2b of the body 2.
- the cuff 3 Prior to the assembly of the two parts of the body 2, by screwing, the cuff 3 is engaged on a smooth cylindrical part of the body 2 located below the second threaded end of the lower part 2a of the body 2.
- the inside diameter of the cuff 3 is slightly greater than the outer diameter of the smooth cylindrical part of the lower section 2a of the body 2. In this way, the body 2 of the intermediate connector 1 is mounted freely rotatable inside the cuff 3.
- the cuff 3 is immobilized in axial translation between the two sections 2a and 2b of the body 2 because the lower section 2a comprises, below the smooth cylindrical zone, a projecting part 5 radial with respect to the smooth cylindrical part opposite the end of the cuff 3 and that the upper section 2b of the body 2 comprises at its lower end, a 5 'portion projecting radially opposite of the upper end of the sleeve 3.
- the axial distance between the upper end of part 5 of section 2a and the lower end of section 2b is slightly greater than the length in the direction axial of the cuff 3.
- the body 2 is then mounted free to rotate inside of the cuff 3 which is itself maintained around the part smooth cylindrical section 2a by the lower part 5 'of section 2b.
- the two parts of the drill string on either side of the fitting intermediate 1 are arranged coaxially and have as axis, axis 7 common to the two sections 2a and 2b assembled in a layout coaxial.
- the cuff 3 has, on its outer surface, blades 6 in radial projection having a direction slightly inclined with respect to the axis 7 of the intermediate fitting 1.
- the overall outside diameter of the cuff 3 is substantially greater than the diameter of the end portions of sections 2a and 2b of the body 2 of fitting 1 and the diameter of the rods of the drill string.
- the tool drilling at the end of the lower part of the drill string a borehole whose diameter is substantially greater than the diameter rods of the drill string and slightly greater than the outside diameter excluding all of cuff 3.
- the sleeve 3 locks against the wall of the borehole by through the blades 6.
- the drill string is rotatable inside of the cuff 3 constituting a bearing for the rotary drill string.
- the cuff 3 is produced in composite form and has a tubular cylindrical metal part covered with an envelope external which may be of wear material or rubber and which has on its outer surface the blades 6 inclined and projecting radially.
- the use of the cuff 3 reduces the friction of the train rods inside the borehole, because the friction surfaces are limited to the external surfaces of the support blades 6 inside the hole drilling.
- a plurality of intermediate fittings is used which are each fixed between two rods of the drill string or between two elements tubular fittings.
- Such devices effectively reduce friction of the drill string but do not facilitate the circulation of the fluid drilling and detachment of debris torn off by the drilling tool in the annular space, i.e. in the space between the surface of the drill hole and drill string.
- At least part of the body 2 of the intermediate fittings of the drill string and preferably the lower section 2a of the fittings intermediate has profiled grooves 8 arranged along a propeller having as axis the axis 7 of the intermediate connector.
- the lower section 2a of the body 2 of the connector 1 has, along its periphery, five grooves 8a, 8b, 8c, 8d and 8e whose cross sections are identical and deduce one on the other by a rotation of 72 ° around the axis 7 of the section 2a materialized through the center O of the section of the section 2a in FIG. 1A.
- the cross sections of the grooves visible in Figure 1A are asymmetrical and are delimited inside the section 2a, by a line curve 9a and by a substantially straight line 9b making an acute angle ⁇ with a radius OA of the section 2a, the point A located on the external surface of the section 2a constituting one of the ends of the cross section of the groove 8.
- FIG. 1A the direction has also been represented by an arrow of rotation ⁇ of section 2a of the rigidly fixed intermediate fitting to the drill string, when the drill string is rotated inside the borehole.
- Part 9b of the internal contour of the grooves is directed towards the rear with respect to the radius OA, considering the direction of rotation ⁇ .
- the angle ⁇ or undercut angle defined by the rectilinear rear part 9b of the groove section and the radius OA is considered to be negative, the direction of rotation ⁇ being taken as positive direction.
- Each of the grooves 8 has a part 10 located at the rear of the radius OA, when we consider the direction of rotation ⁇ , point A being constituted by the outer end of the groove section located at the rear of the section considering the direction of rotation ⁇ .
- the part of the grooves 8 having as cross-section the part of section 10 located at the rear of the OA radius constitutes an undercut part grooves, that is to say a hollow machined part at the rear of the radii of the sections of the section 2a each joining the center of a section to an outer end of the groove located at the rear of this groove.
- the grooves have an angle mean tilt ⁇ with respect to axis 7, which is the tilt angle of the propeller followed by groove 8.
- grooves 8 have an increasing depth between their lower and upper end parts and their central part.
- the grooves 8 comprise an undercut part allows to strongly activate the circulation of the drilling fluid and waste.
- the undercut part 10 of the grooves 8 has an effect scoop during rotation of the drill string. Drilling fluid and debris suspended in the drilling fluid are retained and driven in rotation by the undercut parts of the grooves, so that the fluid and debris in cooperation with the inclined helical grooves of an angle ⁇ with respect to the axis of the intermediate fitting are driven towards the top. Activation of the upward circulation of drilling fluid and debris as well as the agitation produced during the rotation of the profiled part of the body of the tubular fitting comprising the grooves 8 make it possible to avoid risk of accumulation of debris in the ring finger and in particular in the vicinity from the bottom of the hole.
- the part of the undercut grooves makes it possible to clean the hole drilling by peeling debris from the wall of the hole, while tilting grooves relative to the axis allows to promote the axial drive of the drilling fluid and debris.
- angles ⁇ and ⁇ can be fixed, for example at a value comprised between 10 ° and 80 °, the values of angles ⁇ and ⁇ can be chosen for optimize the circulation of debris.
- the shape and depth of the undercut part of the grooves 8 are also chosen to optimize detachment and training up the debris in the ring finger of the borehole.
- the external surface 11 can be coated a filling layer of wear-resistant material.
- the sleeve 3 rotatably mounted on the body 2 can be produced in one single part, engaged axially on the smooth cylindrical part of the body 2, then immobilized in axial translation during the assembly of the two parts of body 2, as just described.
- Single-piece shirt can also be immobilized axially between a radially projecting surface machined on a part of the body and a ring crimped on a second part of the body of the intermediate connector.
- the shirt can also be made in several parts and preferably in two parts which can be engaged laterally on the surface of the body of the intermediate fitting then assembled together, by example using assembly pins.
- the cylindrical seat can include grooves allowing the circulation of the fluid in the annular, at the level of the cylindrical bearing.
- this shirt can be constituted by a simple steel part machined on its external lateral surface to present grooves or grooves allowing the circulation of the coolant and a reduction in the bearing surface on the wall of the borehole.
- the sleeve rotatably mounted on the body of the intermediate fitting can be also in composite form, as described above high.
- the jacket may preferably include a tubular core metallic which is covered by wear material or which is embedded in an elastomeric jacket having on its outer surface ribs or bearing blades on the wall of the borehole.
- the shirt can be rotatably mounted on a smooth part of the body of the intermediate connection, so as to constitute a plain bearing, or else rotatably mounted on a part of the body, by means of a bearing balls or roller bearings.
- the jacket or the fixed bearing surface on the wall of the borehole has an outside diameter equal to or slightly greater than maximum diameter of the section of the body of the intermediate fitting, in the upper end area of the grooves.
- train elements drill rods according to the invention each consisting of a drill rod having a particular structure which will be described below with regard to Figures 2, 2A, 2B and 2C.
- FIG 2 there is shown a drill pipe designated so general by the reference 12 and designed so as to constitute an element drill string train according to the invention making it possible to reduce the friction and activate the circulation of drilling fluid and debris inside of the borehole, when the drill pipe 12 is interposed on a drill string used for drilling the hole.
- the drill string element according to the invention can be constituted either by a common drill rod of the drill string, either by a heavy rod, an intermediate rod or a compression rod.
- the general structure of the stem is analogous to the structure of the rod 12 shown in FIG. 2.
- the drill pipe 12 comprises an elongated tubular body comprising, at one of its ends or upper end, a tapped opening frustoconical 14a making it possible to connect the rod 12 to a rod of the train of drill rods located above the rod 12, that is to say in the direction of the surface from which drilling is carried out.
- the rod 12 has, at its end opposite the tapped opening 14a, a frustoconical threaded portion 14b making it possible to assemble end to end the rod 12 to a rod of the drill string located below the rod 12, that is to say towards the drilling tool.
- the rod 12 constituting a drill string train element following the invention comprises, along its length, in positions substantially equidistant from the ends and the central part of the stem, two identical support assemblies 13a and 13b making it possible to reduce the friction and activate the circulation of the drilling fluid in the ring finger of the borehole.
- Each of the support assemblies 13a and 13b has a central zone bearing on the wall of the borehole and two end portions arranged on either side of the central area in which the drill pipe is machined so as to have helical grooves.
- the support assembly 13a comprises a central zone constituted by a bearing surface 15a whose cylindrical outer surface is machined from so as to present helical grooves 16.
- the bearing surface 15a is made in one piece with the rod drilling, by machining the external surface of the drill pipe in the central area.
- the grooves 16 machined in the central zone have a depth substantially constant, as seen in Figure 2A and allow the circulation of drilling fluid at the level of the scope support 15a.
- the drill rod On either side of the bearing surface 15a, the drill rod is machined so as to constitute two end parts 17a and 17'a of the assembly support 13a for activating the circulation of the drilling fluid and debris in the ring finger.
- Parts 17a and 17'a constitute hydraulic activation profiles of fluid circulation which are generally analogous to the area of the intermediate fitting shown in Figure 1, showing grooves 8.
- the part 17 ′ a of the assembly 13a support comprises a plurality of grooves 18'a whose shape of the cross section is similar to the shape of the section of the grooves 8 of the intermediate connector 1 shown in Figure 1A.
- the part 17'a of the support zone 13a comprises five grooves 18'a of helical shape whose general direction makes an angle ⁇ with the axis 19 of the rod 12 and whose cross section has a part 20 undercut, according to the definition given to this term in the case of the intermediate connector 1 shown in Figures 1, 1A and 1B.
- the section of the grooves 18'a is limited towards the rear by a line substantially straight forming an acute angle ⁇ , or undercut angle with the radius of the section of the rod passing through the outer end of the groove section located at the back of the groove, this outer end of the groove on the outer surface of the rod.
- the section of the part 17a of the support zone 13a is identical to the section of the part 17'a and has helical grooves 18a, the section is identical to the section of grooves 18'a.
- the external surface of the rod 12, in the end zones 17a and 17'a of the support zone 13a is a surface of revolution around the axis 19 of the stem, at least part of which has a generative curve having the shape of an arc.
- the end portion 17a of the rod has thus an external surface of revolution whose generating curves, at less in the connection area of part 17a with the current part of the rod 12 of cylindrical shape, are constituted by arcs of circle of radius R1.
- the part 17 ′ a of the rod 12 has a external surface having a shape of revolution around the axis 19 of the rod whose generators, at least in the connection area of the part 17'a with the central part of the rod of cylindrical shape, are constituted by arcs of a circle of radius R2.
- the radii R1 and R2 which may be equal have a length at less than one meter.
- the central part of the support area 13a constituting the support surface 15a has a cylindrical shape and a slightly larger diameter to the diameter of the ends of the parts 17a and 17'a of the connecting rod to the central part 15a. This diameter could also be appreciably equal to the diameter of the connection ends of parts 17a and 17'a.
- bearing surface 15a it is also possible to machine the bearing surface 15a so that its external surface has a form of revolution and generators constituted by arcs of a circle having a radius R3 which can be equal to the radii R1 and R2 of the arcs of circle constituting the generatrices of the outer surface of the end portions 17a and 17'a.
- the radii R1 and R2 are equal.
- the R3 radius of the generators of the outer surface of the central bearing surface 15a can be equal to radius R1 or R2 or again, as in the embodiment shown in Figure 2, the outer surface may have generators straight lines, i.e. an infinite radius R3.
- the outside diameter of the bearing surface 15a is at least equal to or greater than the maximum diameter of parts 17a and 17'a and constitutes the maximum diameter of the drill pipe.
- the diameter of the bearing surface 15a is itself slightly less than the diameter of the drilling.
- the bearing surface 15a of the support assemblies 13a makes it possible to reduce the friction between the drill pipe and the wall of the borehole and the hydraulic profiles of the parts 17a and 17'a which come described will activate the circulation of drilling fluid and to remove debris, which allows for improved cleaning in the annular of the borehole.
- the second support assembly 13b of the drill rod 12 fills identical functions to the first support assembly 13a.
- this second support assembly comprises end portions 17b and 17'b formed in the form of hydraulic profiles which are identical, respectively, to parts 17a and 17'a ,, of the first support assembly 13a.
- FIG. 3 a portion of a drill pipe 22 is shown produced according to a variant of the embodiment shown in the figure 2.
- the drill rod 22 has two identical support assemblies only one of which has been shown in FIG. 3.
- the support assembly 23 comprises a central part constituted by a cuff 25 attached to the rod 22 which is rotatably mounted inside of the cuff 25. On either side of the cuff 25, the assembly support 23 has two parts 27 and 27 'identical to parts 17a and 17'a or 17b and 17'b of the rod 12 shown in FIG. 2.
- the cuff 25 is made in two parts in the form of two semi-cylindrical tubular parts 21 and 21 'which can be engaged laterally on a part of the rod 22 whose diameter is less than the diameter of parts 27 and 27 'and assembled between them at the junction zones, by pins or keys 26.
- the cuff 25 is thus immobilized in axial translation on the rod 22.
- the rod 22 rotates inside the cuff 25 playing the role of a plain bearing. This reduces the friction of the drill string.
- the cuff 25 can have on its external surface grooves or grooves facilitating the circulation of drilling fluid and reducing the contact surface between the drill string and the wall of the hole.
- the cuff 25 can be made as a single piece or so composite as described above with regard to the cuff 3 of the intermediate connector 1 according to the first embodiment of the invention.
- this drill rod may have a single support assembly at the central part of the rod or several support assemblies distributed along the length of the drill pipe.
- two sets of supports are used so arranged symmetrical about the center of the stem or three sets one of which is located in the central part of the rod and the other two have equidistant arrangements with respect to the ends of the rod.
- Each of the support assemblies may include a cuff in which the drill pipe is rotatably mounted or a bearing surface made in one piece with the drill pipe.
- the grooves machined in the tubular section or sections constituting hydraulic profiles for activation of fluid circulation and detachment debris may have a different shape from that which was described. These grooves can have a variable or substantially depth constant along their length. The maximum depth of the grooves can be adapted to the desired activation effect.
- the grooves have a part undercut, this undercut portion occupying a fraction more or less of the cross section of the groove, so to adjust the effect of detachment of debris by the hydraulic profile.
- the negative undercut angle of the groove section can be chosen so as to optimize the effect of entrainment of the drilling fluid and detachment of debris, taking into account the angle ⁇ of inclination of the grooves helical in shape.
- the stem sections constituting hydraulic profiles can have a number of grooves other than five, for example four grooves 90 ° from each other or three grooves at 120 ° around the axis of the stem.
- the drill string element according to the invention comprising hydraulic profiles for driving the drilling fluid and debris can be formed by a different element from a fitting intermediate or a drill pipe, as described by way of examples.
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Description
Claims (14)
- Elément d'un train de tiges de forage rotatif comportant au moins un tronçon de forme tubulaire (2a, 17a, 17'a, 17b, 17'b, 27, 27') dont la surface externe présente au moins une rainure (8, 8a, 8b, 8c, 8d, 8e, 18a, 18'a) disposée suivant une hélice ayant pour axe l'axe (7, 19) du tronçon, et présentant une section transversale par un plan perpendiculaire à l'axe (7, 19) du tronçon (2a, 17a, 17'a, 17b, 17'b, 27, 27') ayant une partie (10, 20) en contre-dépouille, située à l'arrière d'un rayon (OA) de la section transversale du tronçon (2a, 17a, 17'a, 17b, 17'b, 27, 27') passant par l'extrémité externe (A) de la section de la rainure située à l'arrière de la rainure, en considérant le sens de rotation (Ω) du train de tiges, caractérisé par le fait que la section transversale de la rainure (8, 18a, 18'a) qui est dissymétrique est délimitée à l'arrière de la rainure par une ligne (9b) sensiblement droite faisant un angle de contre-dépouille négatif (β) avec le rayon (OA) de la section transversale du tronçon, et qu'il comporte de plus une portée d'appui (3, 13a, 13b, 23) adjacente au tronçon de forme tubulaire (7a, 17a, 17'a, 17b, 17'b, 27, 27') dont le diamètre externe maximal est au moins égal au diamètre maximal des tiges du train de tiges de forage.
- Elément de train de tiges de forage suivant la revendication 1, caractérisé par le fait que la rainure (8, 18a, 18'a) est inclinée vers la droite dans le sens de bas en haut d'un angle (α) par rapport à l'axe (7, 9) du tronçon (2a, 17a, 17'a, 17b, 17'b, 27, 27').
- Elément de train de tiges de forage suivant la revendication 2, caractérisé par le fait que l'angle de contre-dépouille (β) est compris entre 10° et 80°.
- Elément de train de tiges de forage suivant l'une quelconque des revendications 1 à 3, caractérisé par le fait que le tronçon (2a, 17a, 17'a, 17b, 17'b) comporte cinq rainures (8, 18a, 18'a) dont les positions suivant la circonférence du tronçon se déduisent l'une de l'autre par une rotation de 72° autour de l'axe (7, 9) du tronçon.
- Elément de train de tiges de forage suivant l'une quelconque des revendications 1 à 4, caractérisé par le fait qu'il constitue un raccord intermédiaire (1) entre deux tiges de forage du train de tiges, et qu'il comporte :un corps tubulaire (2) ayant, à ses extrémités longitudinales, des moyens (4a, 4b) de jonction du corps (2) du raccord intermédiaire (1) à une première et à une seconde tiges, respectivement, du train de tiges, sur lequel est réalisé l 'au moins un tronçon tubulaire (2a) dont la surface externe présente au moins une rainure (8), etune manchette (3) montée rotative sur une partie du corps (2) du raccord intermédiaire (1) adjacente au tronçon tubulaire (2a) comportant la rainure (8) ayant une partie (10) en contre-dépouille, le diamètre extérieur de la manchette (3) étant au moins égal au diamètre du tronçon (2a) du corps (2) du raccord intermédiaire (1), dans sa partie adjacente à la manchette (3), de manière à constituer la partie d'appui (3) de l'élément (1).
- Elément de train de tiges suivant la revendication 5, caractérisé par le fait que la manchette (3) est immobilisée en translation axiale entre deux tronçons (2a, 2b) du corps (2) assemblés entre eux par vissage.
- Elément de train de tiges de forage suivant l'une quelconque des revendications 5 et 6, caractérisé par le fait que le tronçon (2a) du corps (2) du raccord intermédiaire (1) est revêtu d'un matériau résistant à l'usure sur une partie (11) de sa surface externe non occupée par la rainure (8).
- Elément de train de tiges suivant l'une quelconque des revendications 1 à 4, caractérisé par le fait qu'il constitue une tige de forage (12, 22) du train de tiges comportant au moins un ensemble d'appui (13a, 13b, 23) ayant une partie centrale d'appui (15a, 15b, 25) et deux tronçons tubulaires (17a, 17'a, 17b, 17'b, 27, 27') dont la surface externe comporte au moins une rainure (18a, 18'a) situés de part et d'autre de la partie centrale d'appui (15a, 15b, 25).
- Elément de train de tiges de forage suivant la revendication 8, caractérisé par le fait que la partie centrale d'appui (15a, 15b) de l'ensemble d'appui (13a, 13b) de la tige de forage (12) est constituée par une portée d'appui réalisée de manière monobloc avec la tige de forage (12) et présentant un diamètre extérieur constituant le diamètre maximal de la tige de forage (12).
- Elément de train de tiges de forage suivant la revendication 8, caractérisé par le fait que la partie centrale d'appui (25) de l'ensemble d'appui (23) de la tige de forage (22) est constituée par une manchette tubulaire (25) rapportée et fixée contre la tige de forage (22), de manière que la tige de forage (22) soit rotative à l'intérieur de la manchette (25) et que la manchette (25) soit immobilisée en translation axiale par rapport à la tige de forage (22).
- Elément de train de tiges de forage suivant l'une quelconque des revendications 8 à 10, caractérisé par le fait que les tronçons tubulaires (17a, 17'a, 17b, 17'b, 27, 27') des ensembles d'appui (13a, 13b, 23) de la tige de forage (12, 22) ont une surface extérieure de révolution qui présente des génératrices dont une partie au moins a la forme d'un arc de cercle de rayon au moins égal à un mètre.
- Elément de train de tiges de forage suivant l'une quelconque des revendications 8 à 11, caractérisé par le fait que la partie centrale d'appui (15a, 15b, 25) des ensembles d'appui (13a, 13b, 23) de la tige de forage (22) présente une surface externe ayant une forme de révolution dont les génératrices ont la forme d'arcs de cercle dont le rayon est au moins égal à un mètre.
- Elément de train de tiges de forage suivant l'une quelconque des revendications 8 à 12, caractérisé par le fait que la tige de forage (12, 22) comporte deux ensembles d'appui (13a, 13b, 23) placés dans des dispositions équidistantes par rapport à la partie centrale de la tige (12, 22).
- Elément de train de tige de forage suivant l'une quelconque des revendications 8 à 12, caractérisé par le fait que la tige de forage (12, 22) comporte trois ensembles d'appui dont l'un est situé à la partie centrale de la tige de forage (22) et les deux autres dans des dispositions équidistantes par rapport aux extrémités de la tige de forage (22).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9703207A FR2760783B1 (fr) | 1997-03-17 | 1997-03-17 | Element d'un train de tiges de forage rotatif |
FR9703207 | 1997-03-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0866209A1 EP0866209A1 (fr) | 1998-09-23 |
EP0866209B1 true EP0866209B1 (fr) | 2003-06-04 |
Family
ID=9504860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400538A Expired - Lifetime EP0866209B1 (fr) | 1997-03-17 | 1998-03-06 | Elément d'un train de tiges de forage rotatif |
Country Status (6)
Country | Link |
---|---|
US (1) | US6056073A (fr) |
EP (1) | EP0866209B1 (fr) |
AT (1) | ATE242419T1 (fr) |
DE (1) | DE69815187T2 (fr) |
FR (1) | FR2760783B1 (fr) |
NO (1) | NO319236B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2682281C2 (ru) * | 2013-10-25 | 2019-03-18 | НЭШНЛ ОЙЛВЕЛЛ ВАРКО, Эл.Пи. | Скважинные звенья очистки ствола и способ их применения |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789438B1 (fr) | 1999-02-05 | 2001-05-04 | Smf Internat | Element profile pour un equipement de forage rotatif et tige de forage comportant au moins un troncon profile |
US20040060699A1 (en) * | 2000-12-19 | 2004-04-01 | Gholam Rastegar | Torque reducing tubing component |
FR2824104A1 (fr) | 2001-04-27 | 2002-10-31 | Smf Internat | Element profile pour un equipement de forage rotatif et applications a des composants d'un train de tiges de forage |
FR2835014B1 (fr) * | 2002-01-18 | 2004-07-16 | Smf Internat | Element profile pour un equipement de forage rotatif et tige de forage comportant au moins un element profile |
GB0203956D0 (en) * | 2002-02-20 | 2002-04-03 | Appleton Robert P | Drill string member |
FR2851608B1 (fr) * | 2003-02-20 | 2006-01-27 | Smf Internat | Element d'un train de tiges de forage comportant au moins une zone d'appui, tige de forage et joint d'outil |
EP1727960A1 (fr) * | 2004-03-26 | 2006-12-06 | Downhole Products PLC | Appareil de fond servant a mobiliser des deblais de forage |
GB2429723B (en) * | 2005-09-06 | 2010-08-04 | Hamdeen Inc Ltd | Downhole impeller device |
US7814996B2 (en) * | 2008-02-01 | 2010-10-19 | Aquatic Company | Spiral ribbed aluminum drillpipe |
US8602113B2 (en) | 2008-08-20 | 2013-12-10 | Exxonmobil Research And Engineering Company | Coated oil and gas well production devices |
US8561707B2 (en) | 2009-08-18 | 2013-10-22 | Exxonmobil Research And Engineering Company | Ultra-low friction coatings for drill stem assemblies |
US8336645B2 (en) * | 2009-08-28 | 2012-12-25 | Arrival Oil Tools, Inc. | Drilling cuttings mobilizer and method for use |
FR2980815B1 (fr) | 2011-10-04 | 2013-09-27 | Vam Drilling France | Element de garniture de forage et tige de forage correspondante |
FR2992345B1 (fr) * | 2012-06-22 | 2014-07-25 | Vam Drilling France | Element de garniture de forage avec zone d'activation des fluides |
US8739902B2 (en) | 2012-08-07 | 2014-06-03 | Dura Drilling, Inc. | High-speed triple string drilling system |
US9617654B2 (en) | 2012-12-21 | 2017-04-11 | Exxonmobil Research And Engineering Company | Low friction coatings with improved abrasion and wear properties and methods of making |
US20140173995A1 (en) | 2012-12-21 | 2014-06-26 | Exxonmobil Research And Engineering Company | Methods of making a drilling tool with low friction coatings to reduce balling and friction |
US9297410B2 (en) | 2012-12-31 | 2016-03-29 | Smith International, Inc. | Bearing assembly for a drilling tool |
RU2578682C2 (ru) * | 2013-03-19 | 2016-03-27 | Михаил Матвеевич Самсонов | Способ очистки ствола скважины при бурении ее горизонтальных участков и бурильная труба для осуществления способа |
US10399323B2 (en) | 2016-04-12 | 2019-09-03 | Delavan Inc. | Smoke and soot removal systems for additive manufacturing |
US11364705B2 (en) | 2017-10-17 | 2022-06-21 | Exxonmobil Upstream Research Company | Diamond-like-carbon based friction reducing tapes |
CN111219155B (zh) * | 2020-03-19 | 2024-07-23 | 山东兖能泰德重工有限公司 | 缠绕式钻杆 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3085639A (en) * | 1961-01-17 | 1963-04-16 | Earl L Fitch | Drill collar for oil wells |
US3338069A (en) * | 1965-03-11 | 1967-08-29 | Exxon Production Research Co | Rotary drill collar |
DE2059232B1 (de) * | 1970-12-02 | 1972-03-09 | Werkzeugbau Gmbh | Gesteinsbohrer |
DE2735227C2 (de) * | 1977-08-04 | 1983-10-27 | Hawera Probst Gmbh + Co, 7980 Ravensburg | Gesteinsbohrer |
US4285407A (en) * | 1979-12-17 | 1981-08-25 | Samford Travis L | Straight hole driller |
FR2517357A1 (fr) * | 1981-11-27 | 1983-06-03 | Smf Int | Tige de forage |
GB8709229D0 (en) * | 1987-04-16 | 1987-05-20 | Shell Int Research | Tubular element |
US4874045A (en) * | 1988-12-27 | 1989-10-17 | Clayton Charles H | Straight hole drilling method and assembly |
US4949797A (en) * | 1989-08-24 | 1990-08-21 | Isom John R | Drill pipe |
US4995466A (en) * | 1989-12-22 | 1991-02-26 | Snow Jr Roy W | Method and device for stabilizing the path of a drilling tool |
US5040620A (en) * | 1990-10-11 | 1991-08-20 | Nunley Dwight S | Methods and apparatus for drilling subterranean wells |
GB2314358B (en) * | 1996-06-18 | 2000-10-11 | George Swietlik | Cutting bed impeller |
-
1997
- 1997-03-17 FR FR9703207A patent/FR2760783B1/fr not_active Expired - Lifetime
-
1998
- 1998-03-06 EP EP98400538A patent/EP0866209B1/fr not_active Expired - Lifetime
- 1998-03-06 AT AT98400538T patent/ATE242419T1/de not_active IP Right Cessation
- 1998-03-06 DE DE69815187T patent/DE69815187T2/de not_active Expired - Fee Related
- 1998-03-13 NO NO19981140A patent/NO319236B1/no not_active IP Right Cessation
- 1998-03-16 US US09/039,338 patent/US6056073A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2682281C2 (ru) * | 2013-10-25 | 2019-03-18 | НЭШНЛ ОЙЛВЕЛЛ ВАРКО, Эл.Пи. | Скважинные звенья очистки ствола и способ их применения |
US11047180B2 (en) | 2013-10-25 | 2021-06-29 | National Oilwell Varco, L.P. | Downhole hole cleaning joints and method of using same |
Also Published As
Publication number | Publication date |
---|---|
FR2760783A1 (fr) | 1998-09-18 |
ATE242419T1 (de) | 2003-06-15 |
US6056073A (en) | 2000-05-02 |
FR2760783B1 (fr) | 1999-07-30 |
DE69815187T2 (de) | 2003-12-04 |
NO319236B1 (no) | 2005-07-04 |
EP0866209A1 (fr) | 1998-09-23 |
DE69815187D1 (de) | 2003-07-10 |
NO981140L (no) | 1998-09-18 |
NO981140D0 (no) | 1998-03-13 |
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