(57) Abstract:The invention relates to the field of drilling equipment, and in particular to means for drilling large diameter. The inventive planetary auger includes fixed in the lower and upper traverse the mud motor, the axis of which is offset from the axis of the borehole, the mud motor is associated with a column of drill pipe through the Central shaft, wherein the longitudinal axis of the turbodrill is inclined to the axis of the Central shaft at an angle from 30 minutes to 7oand for stabilization and centration of the planetary drill along the axis of the hole it has enshrined in traverse drilled barrel, the lower end of which the screw is mounted a roller satellite-runner. The invention provides improved performance drilling by increasing the axial load on the bit and reduce vibration of the planetary borax. 2 C.p. f-crystals, 3 ill. The invention relates to the field of drilling equipment, in particular for technical means is lowered into the wellbore through which drilled wells for various purposes with a diameter of from 590 to 2450 mmWell-known and widely spread in Russia and the republics of the former USSR planetary multicurved. USSR N 122464 "Assembly for drilling large diameter shafts".- Bulletin of inventions N 24 1962; a reference manual for jet turbine drilling. - N. P. Zhilenko, A. A. Krasnoshek.- M.: Nedra, 1987). With their help has been solved complex problems of sajtostoroenii, drilled oil and gas wells with a diameter of 394 and up to 590 mm, and videossaudi wells and ventilation shafts. However, more than forty years of history of use of these Boers were identified and their main disadvantages. Primarily these include: the division of the flow of washing liquid supplied to drill pumps to MultiTerminal unit, between a large number of engines; excessive sliding of the arms of the cutter bits on the destroyed face of the wellbore.The division of the flow of washing liquid between the two and especially three and four turbodrills minimizes torque of each of them. At the same time, the portable motion of each of the bits around the geometric center of the bottom of the wellbore increases momentally interaction weapon cones with rock bottom, sharply intensified the wear of the teeth (or pins) and bearing cones.Both of evich loads, as a rule, within the range of values from 0 to 2 tons. The consequence of this fact is the low mechanical speed deepening slaughter and low penetrations per flight (slotting).As the closest prototype we consider "Device for drilling downhole motor", performed according to the description by the author. mon. USSR N 101417 priority from 10.01.1953,In this device..." one turbodrill resulted in a rotation of the bit, and the column of drill pipe (that is, the rotary shaft of the drilling rig), to which the turbodrill fastened with eccentric sub, rotated the axis of the bit around the geometric center of the bottom hole. The role of the decentralizer turbodrill in the wellbore performed friction with the wall cover, worn on his body. Despite the apparent simplicity of design, it is easy to imagine the situation, when the axis of one of the three cones or mnogochastichnogo bit designed on the plane destroyed the surface of the face, takes a position that is perpendicular to the radius of the circular surface of the face. At this point, the rotary table of the drilling rig "drags" the roller cutter on the face; sliding her arms at the bottom reaches the maximum value, which is quite on its trunnion - maximum overload experiencing ball number of the lock bearing. It is the fact of "pulling" of the roller cones on the bottom explains the very large increase in specific torque on the bit.Wear decentralise cover housing mud motor leads to cross-demolition axis eccentric Assembly and the vibration, the frequency of which is proportional to the rotational speed of the drill string, and the amplitude increases with wear of the cover from sliding friction on the borehole wall. The only merit of this scheme is the implementation of the flush fluid flow in one turbo-drill, allowing you to build up to a possible maximum torque.The aim of our invention is to provide a drill that allows you to significantly reduce the specific torque, implemented on a roller bit, performing a planetary motion around the geometric center of the well bore large diameter.Our invention allows not only to eliminate the transverse vibration of the unit, but also to significantly reduce the specific torque on the bit that first time in the practice of the planetary Boers allows drilling p is the Nature of our invention consists in so mounting the scheme turbodrill in traverse downhole Assembly, when driven in rotation of the bit produces a downhole wellbore very specific form - "cone up". At the same time centering and stabilization of the axis of the Assembly along the axis of the wellbore by using satellite cone - "runner", spindle which is attached to a special swellendam trunk enshrined in the traverse unit.For this purpose the upper and lower traverse planetary auger fixed to the Central shaft, which has its upper threaded end (or with flange connection) is fastened to the lower pipe of the drill string. The longitudinal axis of the turbo-drill fixed in the upper and lower lifting beams, inclined to the longitudinal axis of the Central shaft at an angle between 30 minutes and 7o. For this purpose, the hole in the lower cross beam, which is attached to the turbodrill, radially offset to the longitudinal axis of the Central shaft relative to the hole in the upper cross beam, which also serves for fastening of the turbodrill.Axle cone satellite-runner, which is the stabilization of the situation and focus planetary borax in the barrel drilled wells, is attached to the lower part of the special swerling trunk, which in turn is attached those nipples.The invention is illustrated in three figures.In Fig. 1 shows odnokorennye planetary drill.In Fig. 2 shows the satellite-"runner", recorded with the bearings on my journal.In Fig. 3 depicts a satellite,"thumb" asymmetric journal.The invention is illustrated by a detailed description.The Central shaft 1 planetary drill its upper threaded or flanged end is attached to a heavy - bottom of the drill pipe, rotating the rotary table of the drilling rig. On the shaft 1 fixedly mounted: bottom cross-piece 2 and traverse the top 3. In transect 3 fixed (welded) connecting sub 4, to which the threaded or flange connection secures the turbodrill 5. In the traverse 3 is also fixed (welded) long sirleny the barrel 6, which is fixed in traverse 2. In its lower part (under the head plate 2) barrel 6 has a threaded nipple or flange), to which is attached the pin 7 satellite-runner 8. The slider 8 is fixed on the axle 7 by means of radial bearings 9 and locking ball bearing 10. Calibrating the wellbore lower conical surface of the thumb reinforced with hard alloy pins. OS is the center of the hole in the cross beam 2, where the wound turbodrill 5 (for fastening to the connecting sub 4), is shifted radially towards the axis of the Central shaft 1 to the desired value relative to the center holes in the cross beam 3, which is welded sub 4.The mud motor 5 is attached to cross beam 2 by a nut 11. To the shaft 12 of the mud motor 5 is attached to the bit 13. The shape of the roller cones 13 and their armament, milled teeth or pins are so subzone or whip crowns simultaneously contacted (relied) with a plane perpendicular to the axis of its mounting thread (or flange).Above the upper transverse beam 3 is mounted (welded) to the Central shaft (hollow) 1 and connecting sub 4, and sirleny barrel 6 one common or two pipe 14, hydraulically connecting the cavity of the shaft 1 with a cavity swerling shaft 6 and the cavity inside the turbodrill 5, in which the turbine and its supporting elements. With fittings drill string 14 is hydraulically communicated with the bit 13 and satellite - runner 8. Depending on the softness and plasticity formations drilled fixing swerling shaft 6 in traverse 2 and 3 can be implemented so that its axis was parallel to the axis of the Central vnesenii to the axis of the Central shaft 1. For this purpose, the hole in the lower cross beam 2, which is wound and welded sirleny the shaft 6, is shifted radially towards the axis of the Central shaft 1 relative to the hole in the upper cross beam 3, which also serves for fastening swerling shaft 6. The slope should be greater than the hard and abrasive rocks are supposed to drill.For cases when it is necessary to drill the well holes of large diameter in a very strong and abrasive rocks, such as gravel, boulders, okremnennye Sandstone, quartzite, granite and the like, the journal of satellite-runner should perform asymmetric with respect to its thread (see Fig. 3). In this case, the satellite-runner attached to the drilled shaft 6 so that the axis 15 of the bearing part of its trunnion 7 intersect with the axis 20 of the Central shaft 1 in the top face of the cone - point 16 where it contacts the peripheral arms of one of the calibrating roller cones 13. Form 17, on which are displayed the heads of the pins 18, is pressed into the body of the milling cutter 19 satellite-runner must also intersect at the point 16. Such a performance runner ensures long trouble-free operation.Work planetang is to the bottom (first) heavy pipe of large diameter, then begins its descent into the well. Next, the drill string is assembled and descends into the well bore as is done in conventional rotary drilling method. Planetary Bur not brought to slaughter at a distance of 9-12 mOn a drill string wrapped around the lead pipe are included in the work mud pumps, drilling mud through the drill string begins to be submitted to the Central shaft 1 and further along the pipe 14 to the turbodrill 5 and bit 13 in the drilled shaft 6 and the slider 8. Drill string and planetary Boer (through its Central shaft 1) begin to rotate the rotary table of the drilling rig with a frequency of 5 to 45 rpm and slowly "served" to the slaughter. Bit 13 is rotated by the shaft 12 of the turbodrill 5 with a frequency of about 300-500 rpm Touching of the face, bit 13 begins to produce the tapered face, the high point of which is the point of intersection 16 of the 20 Central axis of the shaft 1 with the peripheral arms of one of the calibrating roller cones 13. While equipping all of the roller cones 13 only intermittently in contact with the borehole bottom line, forming a downhole cone. In each, separately considered, the time there were cones 13, the axis of which is in projection onto the plane of the USA.This circumstance on the one hand reduces the sliding arms of the cones on the bottom hole formation, which greatly reduces the specific interaction of the bit from the bottom, on the other hand extends the service life of weapons and supports the cones.Downhole cone and the slider 8 stabilize in the process of planetary auger - drilling rock bottom-hole - spatial position of the axis 20 of the Central shaft 1. The design of the slider 8, you can bring part of the flow of mud, coming to him through sirleny the barrel 6, very close to the surface of a downhole cone that promotes better treatment from the drilled cuttings. This is very important when drilling shafts of large diameter. In the process of planetary auger is controlled by three main parameters of drilling mode: axial load on the bit 13, the torque on the rotary table of the drilling rig and the discharge pressure of the mud pumps. Drilling continues until you fail bearing part of the roller cones 13. Under constant axial load and performance mud pump time zaklinsky cones on their pivots accompanied by significant growth in the second liquid.In this case, the drilling stops drill string and planetary auger is extracted from wells; replace worn-out bit 13 on the new; the tool is run into the wellbore and resume drilling. 1. Planetary drill, comprising a lower and an upper head plate, fixed in the above-mentioned traverse the mud motor, the longitudinal axis of which is offset relative to the threaded connection of the planetary drill with a column of drill pipe attached to the shaft of the turbo-drill bit, characterized in that the planetary Bur performed enshrined in the aforementioned traverse and related turbodrill through pipe Central shaft, which is connected by a threaded connection with a column of drill pipe, with a hole for attaching the turbodrill in the lower cross beam is shifted in the radial direction to the longitudinal axis of the Central shaft relative to the hole in which the turbodrill is fixed to the upper cross beam, and the longitudinal axis of the turbodrill is inclined to the axis of the Central shaft at an angle from 30 minutes to 7 degrees, and for the stabilization and centration of the planetary drill along the axis of the wellbore, it has secured in the lower and upper traverse drilled shaft connected with the Central shaft with the ASS="ptx2">2. Planetary Bur under item 1, characterized in that on the shaft of the turbo-drill fixed a bit, all of the milling cutter which their arms are in contact with the plane perpendicular to the axis of the thread with which it is fastened to the shaft of the turbo-drill.3. Planetary Bur under item 1, characterized in that the axis of the bearing portion of the axle satellite-runner intersects the axis of the Central shaft at the point where it contacts the peripheral arms of one of the calibrating roller cones attached to the bulk of the turbodrill, while the heads of the pins of the milling cutter satellite-runner are lines that intersect at the same point.
FIELD: oil and gas extractive industry.
SUBSTANCE: device has metallic hubs of stator and rotor, wherein crowns of stator and rotor are concentrically pressed. Crowns of stator and rotor are made of durable ceramics and are additionally equipped with connections, allowing to exclude non-controlled turning of crowns in hubs and spontaneous axial displacement thereof.
EFFECT: higher reliability and efficiency.
FIELD: mining industry.
SUBSTANCE: method includes physical-chemical treatment of metallic body parts, made in form of two half-cylinders, placement of puncheon within them, preparation of fresh rubber mixture, heating press-form up to 150±2°C, with following vulcanization of rubber mixture, detaching press-form, removing puncheon and controlling manufacture. Three compounds of rubber mixture are prepared, with following calendaring thereof on shafts and preparing fresh rubber strip of each compound, 0.5-0.6 mm thick, which prior to placement of puncheon in half-cylinders is wound in halving fashion onto the latter. Of rubber strip of compound, providing for durability, inner layer of rubber winding is made, of compound strip, providing for auto-compensation of wear - middle layer, and of strip, providing for hardness of connection between resin and half-cylinders - outer layer. Each layer of rubber winding is made of thickness, determined from relation k·hw, where h - thickness of each winding layer, mm; k - coefficient, determined empirically, equal to 30-0.35 for inner layer, 0.50-0.60 for middle layer, 0.10-0.15 for outer layer; hw - total thickness of rubber mixture winding, mm. glue covering is applied to each layer and rolled under pressure. After heating of press-form, the latter is placed into one of half-cylinders. Puncheon with rubber winding is deployed and connected to second half-cylinder. After vulcanization and removal of puncheon, rubber-metallic portion of stator is fixed in body pipe.
EFFECT: higher durability and simplified maintenance.
4 cl, 2 dwg, 5 ex
FIELD: oil and gas industry.
SUBSTANCE: device has turbine module, screw gear couple, including stator and rotor, assembly for connection of rotor of screw gear couple to turbine module and spindle, according to invention, rotor of screw gear couple has pass channel, into which a valve is mounted, including locking element and saddle, while locking element is mounted on resilient element with space to saddle surface and with possible contact with saddle surface. When engine is launched whole flow of drilling mud skirts screw gear couple through pass channel in rotor and open valve, i.e. through space between locking element and saddle surface and is directed into turbine module. In face engine loads on elements of gear couple are decreased during its launch due to redistribution of flows of working liquid between screw gear couple and turbine.
EFFECT: higher reliability, higher durability.
2 cl, 3 dwg
FIELD: mechanical engineering.
SUBSTANCE: rotor axis of gear mechanism, performing a planetary movement, is displaced relatively to stator axis for distance of engagement eccentricity. As source auxiliary contour ellipse is used, while proportional coefficient k, determining radius of guiding circle, is taken equal to half necessary number of teeth z of wheel (k = z/2), optimal shape of its teeth is provided by rational combination of ellipse shape coefficient λ, equal to relation of lengths of its semi-axes and eccentricity coefficient of auxiliary contour, in form of relation of length of greater ellipse semi-axis to rolling circle radius, while inner and outer profiles are made in form of elliptic profiles from common ellipse contour.
EFFECT: simplified manufacture.
3 cl, 11 dwg
FIELD: oil and gas industry.
SUBSTANCE: roller tracks at edge inner and outer rings are made on same side, roller tracks at inner and outer rings are made with possible contact of balls with roller tracks of inner and outer rings at angle, greater than 45°, angle being formed by line, passing through points of contact of balls with roller tracks of inner and outer rings and line, perpendicular to longitudinal axis of bearing, profile of roller tracks on inner and outer rings is made from inequality condition D1 > (Din + Dout)/2, where D1 - diameter of circle passing through centers of balls in assembled bearing, Din - inner diameter of inner ring, Dout - outer diameter of outer ring, hardness of inner and outer rings being greater than 48 HRC, application point of radius of roller tracks profile on inner rings is placed in plane of stopping end of inner ring.
EFFECT: higher durability and reliability.
FIELD: oil and gas well boring equipment.
SUBSTANCE: boring rig comprises turbodrill, drill bit and reducer including several planetary mechanisms and installed in-between. Sun gears of both planetary mechanisms are secured to turbodrill rotor shaft. Carrier with plane pinion axes of upper planetary mechanism is connected to boring rig body. Ring gear is attached to upper link of drill bit. Ring gear of lower planetary mechanism is linked with plane pinion axes of upper planetary mechanism, carrier thereof is connected with lower link of drill bit.
EFFECT: increased efficiency due to increase in turbodrill rotor speed up to optimal value, reduced number of turbodrill steps and hydraulic resistance thereof, increased flushing liquid flow velocity, reduced reactive moment on turbodrill stator and pipe string.
FIELD: oil and gas well drilling equipment, particularly hydraulic downhole motors.
SUBSTANCE: device has screw bottomhole motor comprising sub and body for arranging operating tool sections. Tool sections are mating rotor and stator surfaces made in the form of multistart screw pair. Tangential current-speed and inlet drilling mud direction transducer is installed above screw pair. The transducer comprises body, retaining ring and sealing collar. Blades of the transducer are right-handed (in opposition to helical teeth of the rotor and the stator).
EFFECT: increased mechanical penetration rate due to increased load applied to drilling bit without reduction in power and shaft torque indexes.
FIELD: drilling equipment, particularly for directional drilling, namely control devices adapted to control angle and reactive moment.
SUBSTANCE: control device has hollow central member and three hollow tubular noncoaxial members connected to hollow central member. Inner member is disposed in center between the first and the second members. The first and the second members are connected with inner members by threaded connection. The first member is connected to spindle by threaded coupling, the second member is attached to engine body by threaded coupling and central member is connected to inner member by spline. Each of central member and the first member are provided with sectional contact seats located from spindle connection side, wherein a pair of sectional contact seats arranged from either sides of meridional spindle plane in drilling string curvature plane are defined between central and the first members. Sectional contact seats defined between central and the first members are spaced a distance L from the nearest edges of sectional contact seats of central and the first members along central axis of the first member. The distance L is more or equal to spindle diameter D. Angular deviation of the sectional contact seat formed in the first member from meridian spindle plane in drilling string curvature plane is oppositely directed relative reactive drilling bit moment.
EFFECT: increased stability and angle of gerotor engine deflection and increased accuracy of non-uniform well bottom zone penetration.
2 cl, 10 dwg
FIELD: well drilling equipment, particularly bearings adapted to work in abrasive medium.
SUBSTANCE: radial bearing has body and shaft, as well as thrust collars secured in the body and spring-loaded holders arranged between the shaft and the body. Inserts with conical outer surfaces are located between the holders and the shaft so that inserts cooperate with the shaft and with inner surfaces of the holders. Radial bearing is made as two oppositely arranged blocks and as compression spring inserted in-between. Each block has stop member secured in the body and made as slotted bush. Inserts are arranged in the bush and may perform displacement in radial direction. Thrust collars have conical surfaces cooperating with outer surfaces of the inserts. Angles α at apexes of the cones defined by interacted conical surfaces of bearing support inserts, thrust collars and holders are correlated with friction coefficient μ of interacted surfaces as tg(α/2)≈μ. Insert surfaces cooperating with shaft surface may have coating of elastomeric or hard-alloy material. In accordance with the second embodiment surfaces of inserts, thrust collars and holders interacting one with another may have flat contact zones, which are inclined at (α/2) angle to longitudinal shaft axis.
EFFECT: increased operational reliability of radial bearing.
6 cl, 3 dwg
FIELD: oil and gas well drilling equipment with the use of hydraulic downhole motors.
SUBSTANCE: support-and-centering member is made as metal hub with blades connected to spindle connector. Spindle connector has support cone formed on outer surface thereof and adapted to provide rigid connection with metal hub from inner surface thereof. Support cone of the connector is formed from side of conical thread connecting spindle body with connector. Spindle connector has splines to connect thereof with metal hub. Metal hub is pressed with pressing cone, retaining washer and nut from another side thereof. Metal hub may be installed concentrically or eccentrically to spindle connector axis or outer surface thereof may be differently shaped and arranged eccentrically, concentrically or obliquely with respect to spindle connector axis.
EFFECT: reduced costs of spindle usage.