CN119288354B - Eccentric self-adaptive turbine rotary guide shoe - Google Patents
Eccentric self-adaptive turbine rotary guide shoe Download PDFInfo
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- CN119288354B CN119288354B CN202411832674.8A CN202411832674A CN119288354B CN 119288354 B CN119288354 B CN 119288354B CN 202411832674 A CN202411832674 A CN 202411832674A CN 119288354 B CN119288354 B CN 119288354B
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Abstract
The invention belongs to the field of well cementation casing running equipment, and provides an eccentric self-adaptive turbine rotary guide shoe which comprises a shell, a turbine, a bearing assembly, a guide shoe head and a water outlet channel, wherein the guide shoe head comprises a first columnar section, a second columnar section and an eccentric conical section, the generatrix of the eccentric conical section is an arc line and the arc center faces the inside of the guide shoe head, the eccentric conical section is provided with a self-adaptive mounting hole, a self-adaptive clamping protrusion and a self-adaptive sliding knife edge, the guide shoe head is provided with a self-adaptive knife tool, the self-adaptive knife tool comprises a tooth seat body, a hard alloy knife head matched with the self-adaptive mounting hole, a self-adaptive clamping groove matched with the self-adaptive clamping protrusion, a knife body matched with the self-adaptive sliding knife edge and a plurality of diamond blades distributed along the length direction of the knife body, and the self-adaptive knife tool generates different swing ranges under different pressure conditions of the front end of the self-adaptive knife tool and has swing ranges of 5-12 degrees. The invention has reasonable design and strong reaming capability, is beneficial to improving the casing running construction efficiency and is suitable for large-scale popularization.
Description
Technical Field
The invention belongs to the field of well cementation casing running equipment, and particularly relates to an eccentric self-adaptive turbine rotary guide shoe.
Background
The casing guide shoe has the function of preventing soil on the well wall from entering the casing and guiding the casing to be put into the well. The casing shoe is part of a casing system, located at the lowermost end of the casing string, and has a special configuration with an upper end attached to the casing and a lower end having an internal chamfer and threaded or otherwise attached to the lead shoe. The casing running is a common technical problem in well cementation operations such as horizontal wells, highly inclined wells and the like, and the eccentric guide shoe can better guide the casing to run into the bottom of the well compared with the central guide shoe. The eccentric type guide shoe can be divided into a rotary guide shoe and a non-rotary guide shoe, wherein the eccentric type rotary guide shoe can realize breaking resistance through the action of fluid power pressed out of the inside of the guide shoe after meeting resistance, so that the casing pipe discharging efficiency is improved.
The prior patent CN201610293312.5 discloses an eccentric hydraulic rotary guide shoe, which comprises a body, a turbine base and a guide shoe cap, wherein a second channel is arranged in the turbine base, one end of the second channel is communicated with a first channel arranged in the body, the other end of the second channel is communicated with a converging chamber arranged in the guide shoe cap, the first channel, the second channel and the converging chamber are coaxial, a plurality of downwardly inclined water outlet channels are uniformly arranged at the top of the guide shoe cap along the circumference by taking an axis as the center, and the converging chamber is communicated with the water outlet channels. When the vamp of the eccentric rotary guide shoe resists irregular resistance in the ground, the surface of the vamp is relatively smooth, and the cutting edge capable of forming rotary cutting is lacking, so that the marking capacity of the vamp is insufficient, and the advancing efficiency of the guide shoe is affected.
The prior patent CN220667438U discloses an eccentric vibration rotary cementing tool, which comprises a tool body, a stator turbine, a rotor turbine, a transmission shaft, an eccentric shaft, an inlaid eccentric block A, an inlaid eccentric block B, a shoe eccentric head, a limiting plug, a stator retaining sleeve, a transmission key, a bearing steel ball and a turbine retaining ring, wherein the tool body is hollow and columnar, the transmission shaft is rotationally arranged at the upper part of the center of the tool body, a power source of equipment is given through flowing water, the rotor turbine is arranged and sleeved on the side end surface of the transmission shaft and synchronously rotates with the transmission shaft, the stator turbine is arranged and arranged on the inner end surface of the tool body and keeps a static state with the tool body, and stator turbine blades and rotor turbine blades are adjacent in lamination and are not contacted with each other. The guide shoe is provided with the hard alloy blade on the eccentric guide head, and the hard alloy blade can improve the reaming efficiency of the eccentric guide head. However, if the rotary digging working surface of the hard alloy blade is opposite to the forefront end of the guide shoe, certain hysteresis exists, and under the condition that the guide shoe drill is in an irregular hole, a gap is difficult to quickly punch, so that a short slip condition can occur, and the construction progress can be directly influenced.
Disclosure of Invention
Aiming at the technical problems of the turbine rotary guide shoe, the invention provides the eccentric self-adaptive turbine rotary guide shoe which is reasonable in design, high in reaming capability and beneficial to improving the casing running construction efficiency.
In order to achieve the aim, the technical scheme adopted by the invention is that the eccentric self-adaptive turbine rotary guide shoe comprises a shell, wherein a turbine is arranged in the shell, a bearing component is arranged on the periphery of the turbine, a guide shoe head coaxially connected with the turbine is arranged at the front end of the shell, the guide shoe head is of an eccentric structure and is provided with three water outlet channels, the guide shoe head comprises a first columnar section rotationally nested with the shell, a second columnar section is arranged at one end far away from the turbine of the first columnar section, an eccentric conical section is arranged on the second columnar section, a bus bar of the eccentric conical section is an arc line and the arc center faces the inside of the guide shoe head, a self-adaptive mounting hole is arranged at the eccentric top end of the eccentric conical section, the self-adaptive mounting hole is provided with a self-adaptive clamping bulge at the hole wall position of the self-adaptive mounting hole, which is close to the axis direction of the shoe head, the longest generatrix position of the eccentric conical section is provided with a self-adaptive sliding blade, the shoe head is provided with a self-adaptive cutter, the self-adaptive cutter comprises a tooth seat body positioned in the shoe head, the top of the tooth seat body is provided with a hard alloy cutter head matched with the self-adaptive mounting hole, the top of the hard alloy cutter head is of a conical structure, the side surface of the hard alloy cutter head is provided with a self-adaptive clamping groove matched with the self-adaptive clamping bulge, the side surface of the tooth seat body is provided with a cutter body matched with the self-adaptive sliding blade, the two sides of the cutter body are in sliding fit with the inner wall of the self-adaptive sliding blade, the part of the cutter body positioned outside the eccentric conical section is provided with a plurality of diamond blades distributed along the length direction of the cutter body, the self-adaptive cutter generates different swing ranges under the condition that the front end of the self-adaptive cutter is subjected to different pressures, and the swing ranges are 5-12 degrees.
Preferably, the top of self-adaptation mounting hole passes through the fillet transition and the side contact cooperation of fillet and carbide tool bit, the carbide tool bit includes conical head section and post section, self-adaptation draw-in groove sets up on the post section, the circumference arc length of self-adaptation draw-in groove and the circumference arc length of self-adaptation card protruding are less than 1/3 circular arc.
Preferably, the hard alloy cutter head is eccentrically arranged on the tooth holder body, the cylindrical surface of the cylindrical section and the side surface of the tooth holder body are partially coplanar, the part of the cylindrical section and the tooth holder body coplanar faces the direction of the shortest generatrix of the eccentric conical section, and the side surface of the tooth holder body facing the longest generatrix of the eccentric conical section is provided with a limiting conical surface.
Preferably, a fluid balance pressure groove is formed in the bottom of the tooth holder body, and the fluid balance pressure groove is of a conical structure.
Preferably, at least two arc-shaped guide grooves are formed in the side face of the cutter body, and the guide grooves are in sliding fit with sliding blocks arranged on the inner wall of the self-adaptive sliding edge.
Preferably, the bottom of the outer end surface of the cutter body is in contact connection with the edge of the self-adaptive sliding cutter under the condition that the self-adaptive cutter is at the maximum inclination angle position, the top of the self-adaptive sliding cutter is provided with a movable striking plate, a reset spring is arranged between the movable striking plate and the self-adaptive sliding cutter, and the bottom of the movable striking plate is in contact fit with the top surface of the cutter body.
Preferably, the inside of first column section is provided with the coaxial cover of being connected with the turbine, the top of coaxial cover is horn mouth structure, be provided with self-adaptation spring between coaxial cover and the self-adaptation cutter, self-adaptation spring extends towards the toothholder direction spiral, self-adaptation spring's spiral periphery and self-adaptation cutter contact.
Preferably, the section track of the self-adaptive spring is parabolic, and the parabolic opening faces away from the spiral center of the self-adaptive spring.
Preferably, a circle of wear-resistant surfacing layers are arranged on the outer wall of the self-adaptive mounting hole.
Preferably, the first special-shaped sinking groove is formed in the shortest bus position of the guide shoe head, a pair of second special-shaped sinking grooves are formed in two sides of the longest bus position of the guide shoe head, and the three water outlet channels are respectively and obliquely communicated with the first special-shaped sinking groove and the two second special-shaped sinking grooves.
Compared with the prior art, the invention has the advantages and positive effects that:
According to the eccentric self-adaptive turbine rotary guide shoe, the self-adaptive cutter is arranged on the guide shoe head, the hard alloy cutter head at the head end of the self-adaptive cutter has the leading property, the self-adaptive cutter can deflect in unequal amplitude under the pressure action of the advancing direction and the rotating direction, even if the head end of the guide shoe drills into a hole, a gap can be quickly formed, and the probability of slipping can be effectively reduced by matching with the rotating driving action of a turbine and fluid, so that the underground reaming efficiency of the guide shoe is effectively improved, and the casing running efficiency is further improved. The invention has reasonable design and strong reaming capability, is beneficial to improving the casing running construction efficiency and is suitable for large-scale popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a side view of an eccentric adaptive turbine rotary guide shoe according to an embodiment;
FIG. 2 is a cross-sectional view of the eccentric adaptive turbine rotary shoe of FIG. 1 in the G-G direction;
FIG. 3 is an isometric view of an eccentric adaptive turbine rotary shoe according to an embodiment;
FIG. 4 is a front view of an eccentric adaptive turbine rotary guide shoe according to an embodiment;
FIG. 5 is a top view of an eccentric adaptive turbine rotary guide shoe according to an embodiment;
FIG. 6 is an isometric view of a toe cap provided by an embodiment;
FIG. 7 is a cross-sectional view of a toe cap provided by an embodiment;
FIG. 8 is an isometric view of an adaptive spring provided by an embodiment;
FIG. 9 is an isometric view of an adaptive cutter provided by an embodiment;
In the above figures, 1, a shell, 2, a turbine, 3, a bearing assembly, 4, a shoe leading head, 41, a water outlet channel, 42, a first column section, 43, a second column section, 44, an eccentric taper section, 45, a self-adapting mounting hole, 46, a self-adapting clamping protrusion, 47, a self-adapting sliding edge, 48, a sliding block, 49, a first special-shaped sinking groove, 410, a second special-shaped sinking groove, 5, a self-adapting cutter, 51, a tooth seat, 511, a limiting taper surface, 52, a hard alloy cutter head, 521, a taper head section, 522, a column section, 53, a self-adapting clamping groove, 54, a cutter body, 55, a diamond cutter blade, 56, a fluid balance pressure groove, 57, a guide groove, 6, a movable collision plate, 7, a coaxial sleeve, 8, a self-adapting spring, 9 and a wear-resistant surfacing layer.
Detailed Description
In order that the above objects, features and advantages of the application will be more clearly understood, a further description of the application will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are merely used herein to denote a correspondence with the upper, lower, left, and right directions of the drawing figures, and are not limiting on the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
1-9, The eccentric self-adaptive turbine rotary guide shoe provided by the invention comprises a shell 1, wherein a turbine 2 is arranged in the shell 1, a bearing assembly 3 is arranged on the periphery of the turbine 2, a guide shoe head 4 coaxially connected with the turbine 2 is arranged at the front end of the shell 1, the guide shoe head 4 is of an eccentric structure, three water outlet channels 41 are arranged on the guide shoe head 4, the guide shoe head 4 comprises a first columnar section 42 rotationally nested with the shell 1, a second columnar section 43 is arranged at one end of the first columnar section 42 far away from the turbine 2, and an eccentric conical section 44 is arranged on the second columnar section 43. The bearing assembly 3 is used for reducing the rotation resistance of the turbine 2 under the driving of fluid and guaranteeing the synchronous rotation efficiency of the turbine 2 and the guide shoe head 4, and the shell 1 provides transmission support for the turbine 2, the guide shoe head 4 and the bearing assembly 3 and is used for connecting a casing-down device. In order to improve the rotation performance of the toe cap 4, the present invention may employ a roller structure disposed between the first cylindrical section 42 and the housing 1, for supporting the toe cap 4 and improving the rotation coaxiality of the toe cap 4. Further, the generatrix of the eccentric taper section 44 is arc-shaped and the arc center faces the inside of the toe cap 4, so that the compression resistance and impact resistance of the vamp can be improved.
On the basis, in order to improve the efficiency of the sleeve-discharging of the shoe, the eccentric top end of the eccentric conical section 44 is provided with a self-adapting mounting hole 45, the hole wall position of the self-adapting mounting hole 45, which is close to the axis direction of the shoe head 4, is provided with a self-adapting clamping protrusion 46, the longest generatrix position of the eccentric conical section 44 is provided with a self-adapting sliding edge 47, the shoe head 4 is provided with a self-adapting cutter 5, the self-adapting cutter 5 comprises a tooth seat body 51 positioned in the shoe head 4, the top of the tooth seat body 51 is provided with a hard alloy cutter head 52 matched with the self-adapting mounting hole 45, the top end of the hard alloy cutter head 52 is of a conical structure, the side surface of the hard alloy cutter head 52 is provided with a self-adapting clamping groove 53 matched with the self-adapting clamping protrusion 46, the side surface of the tooth seat body 51 is provided with a cutter body 54 matched with the self-adapting sliding edge 47, the two sides of the cutter body 54 are in sliding fit with the inner wall of the self-adapting sliding edge 47, the part of the cutter body 54 positioned outside the eccentric conical section 44 is provided with a plurality of diamond blades 55 distributed along the length direction of the cutter body 54, and the self-adapting cutter 5 generates different swing ranges under different pressure conditions at the front ends of the self-adapting cutter 5 and the swing ranges of between 5 and 12 degrees.
In particular, the hard alloy cutter head 52 at the most end of the self-adaptive cutter 5 has a leading property, can improve the rotary drilling of an irregular underground environment, meanwhile, the outer side surface of the cutter body 54 protrudes out of the vamp of the shoe head 4, the diamond cutter blade 55 arranged on the surface of the cutter body can play a role in high-speed rotary cutting, the curved surface where a bus line is positioned directly bears the reaming resistance, particularly under the condition of high pressure, the cutter body 54 and the self-adaptive sliding cutter edge 47 keep relatively uniform bus taper, the inclination angle of the hard alloy cutter head 52 faces the central axis direction of the shoe, and the self-adaptive cutter 5 synchronously rotates along with the shoe head 4, so that certain eccentricity and certain rotary cutting capability are maintained, and higher reaming efficiency is obtained. Further, under the condition that the hard alloy head enters an irregular hole, the extrusion force acting on the unit length of the curved surface where the bus of the cutter body 54 is located is different, the whole self-adaptive cutter 5 can deflect in unequal amplitude under the action of the pressure of the advancing direction and the rotating direction, and the rotating torque of the guide shoe is convenient to quickly punch a gap for the hard alloy head to return to the original rotating trend at the hole position, so that the slipping probability is effectively reduced, the downhole reaming efficiency of the guide shoe is effectively improved, and the casing running efficiency is further improved. In the process of generating deflection of the self-adaptive cutter 5, the self-adaptive clamping groove 53 on the hard alloy cutter head 52 can enter the self-adaptive clamping protrusion 46, the convex shapes of the self-adaptive clamping groove 53 and the self-adaptive clamping protrusion enable the center of the hard alloy cutter head 52 to deviate from the center of the original position, the hard alloy cutter head 52 generates planar motion in the self-adaptive mounting hole 45 but does not deviate from the self-adaptive mounting hole 45, meanwhile, the cutter body 54 slides along the production plane of the self-adaptive sliding cutter edge 47, and the upper swing limit node and the lower swing limit node are provided for the cutter body 54 by the mouth edge of the self-adaptive sliding cutter edge 47, so that the functions of preventing falling and enhancing the compression resistance are achieved. Therefore, the self-adaptive cutter 5 keeps synchronous rotation and advancing action with the guide shoe head 4 under the cooperation of the self-adaptive mounting hole 45 and the self-adaptive sliding edge 47, the anti-falling performance is better, the reaming capability is higher, and the guiding efficiency of the device for casing is greatly improved.
In order to improve the reaming capability of the self-adaptive cutter 5, the top end of the self-adaptive mounting hole 45 provided by the invention is in transition through a round angle, the round angle is in contact fit with the side surface of the hard alloy cutter head 52, the hard alloy cutter head 52 comprises a conical head section 521 and a column section 522, the self-adaptive clamping groove 53 is arranged on the column section 522, and the circumferential arc length of the self-adaptive clamping groove 53 and the circumferential arc length of the self-adaptive clamping protrusion 46 are smaller than 1/3 arc. The convex surface of the adaptive clamping protrusion 46 is a curved surface, the thickest position of the convex surface is located near the top end of the longest bus near the eccentric taper section 44, the curved surface extends towards two sides in a limited way, the thickness of the convex surface is reduced, the groove depth and the notch of the adaptive clamping groove 53 are slightly larger than those of the adaptive clamping protrusion 46 so as to move out a corresponding swing space under the action of pressure, and the adaptive clamping protrusion 46 can play a role in preventing falling when contacting with the bottom edge of the adaptive clamping groove 53. In this way, the cemented carbide bit 52 performs planar movement, and besides the self-adaptive clamping protrusion 46 and the self-adaptive clamping groove 53 give up the planar movement amplitude space for the column section 522, the rounded corners provide compression-resistant support for the column section 522, and ensure that the column section completes flexible deflection switching under the action of pressure, thereby providing hardware support for efficient reaming.
Further, the cemented carbide bit 52 is eccentrically mounted on the tooth holder 51, the cylindrical surface of the cylindrical section 522 is partially coplanar with the side surface of the tooth holder 51, the portion of the cylindrical section 522 coplanar with the tooth holder 51 faces the direction of the shortest generatrix of the eccentric tapered section 44, and the side surface of the tooth holder 51 facing the longest generatrix of the eccentric tapered section 44 is provided with a limiting conical surface 511. In this way, under the condition that the upper groove edge of the self-adaptive clamping groove 53 is in micro-contact with the self-adaptive clamping protrusion 46, the same-face part of the column body section 522 and the tooth seat body 51 is abutted against the inner wall of the shortest bus of the eccentric taper section 44, so that the self-adaptive clamping groove can effectively resist high pressure from the advancing direction, and under the condition that the lower groove edge of the self-adaptive clamping groove 53 is in abutting press fit with the self-adaptive clamping protrusion 46, the limit conical surface 511 of the tooth seat body 51 is abutted against the inner wall of the longest bus of the eccentric taper section 44, and the resistance breaking capability of the shoe guide is improved due to the resistance to the high pressure received by the hard alloy cutter head 52 in the process of punching holes and dead corners, so that the hole punching efficiency of the shoe guide is beneficial to improvement.
As shown in fig. 2, since the adaptive cutter 5 is continuously subjected to high pressure in the advancing direction thereof during the reaming process, in order to improve dynamic balance of the adaptive cutter 5, the bottom of the tooth holder body 51 of the present invention is provided with a fluid balance pressure groove 56, and the fluid balance pressure groove 56 has a conical structure. The fluid balance pressure groove 56 can collect a part of fluid impact pressure, balance a part of external forward resistance by pumping high pressure of circulating medium into the well by casing running equipment, and enable the self-adaptive cutter 5 to generate deflection and also have a tendency of balance recovery under various pressure conditions, thereby obtaining better reaming capability.
As shown in fig. 7 and 9, the side of the cutter body 54 of the present invention is provided with at least two arc-shaped guide grooves 57, and the guide grooves 57 are slidably engaged with the slider 48 provided on the inner wall of the self-adapting sliding edge 47. The cutter body 54 can stably deflect along the matching direction of the sliding block 48 and the guide groove 57 in the process of floating along with the whole self-adaptive cutter 5, and the guide groove 57 also plays a role in swing amplitude limitation, so that the pressure of the self-adaptive cutter 5 on a limiting node is reduced, and the actual service life of the guide shoe is prolonged.
In order to improve the relative tightness of the vamp of the shoe, as shown in fig. 2, the bottom of the outer end surface of the cutter body 54 is in contact engagement with the edge of the self-adaptive sliding blade 47 when the self-adaptive cutter 5 is at the maximum inclination angle position, the bottom of the inner end surface of the cutter body 54 is in contact engagement with the edge of the self-adaptive sliding blade 47 when the self-adaptive cutter 5 is at the minimum inclination angle position, the limit support is improved by the two engagement points, and the function of sealing engagement is also realized, meanwhile, the top of the self-adaptive sliding blade 47 is provided with a movable striking plate 6, a reset spring (not shown in the figure) is arranged between the movable striking plate 6 and the self-adaptive sliding blade 47, and the bottom of the movable striking plate 6 is in contact engagement with the top surface of the cutter body 54. The movable striking plate 6 always abuts against the top end of the cutter body 54 under the action of the return spring. In this way, the cutter body 54 and the self-adaptive sliding edge 47 can maintain dynamic sealing at the moment of generating deflection along with the self-adaptive cutter 5, so that the probability of backward flowing of the underground circulating fluid medium is reduced, and the high-speed turning capability of the diamond blade 55 on the cutter body 54 is improved to a certain extent.
As shown in fig. 2 and 8, in order to improve the dynamic balance performance of the self-adaptive cutter 5, a coaxial sleeve 7 connected with the turbine 2 is arranged in the first columnar section 42, the top of the coaxial sleeve 7 is of a bell mouth structure, a self-adaptive spring 8 is arranged between the coaxial sleeve 7 and the self-adaptive cutter 5, the self-adaptive spring 8 spirally extends towards the tooth socket direction, the spiral extending direction eccentrically extends along with the eccentric direction of the leading shoe head so as to obtain a better supporting effect, and the spiral periphery of the self-adaptive spring 8 is in contact with the self-adaptive cutter 5. Wherein, the horn mouth can play the spacing effect to self-adaptation spring 8 inner circle, and self-adaptation spring 8's tip and spiral periphery can effectively support self-adaptation cutter 5, for self-adaptation cutter 5 provides inside support, has the effect of anticreep, can improve self-adaptation cutter 5's dynamic balance nature again.
Further, the cross-sectional track of the adaptive spring 8 is parabolic and the parabolic opening faces away from the spiral center of the adaptive spring 8. The parabolic fracture of the self-adaptive spring 8 can provide more supporting nodes for the self-adaptive cutter 5, on the other hand, a part of circulating fluid medium can form a spiral jet flow in the guide shoe head 4, the self-adaptive cutter 5 can be supported while the self-adaptive spring 8 is supported, the volume of the spiral jet flow flexibly changes along with the compression of the self-adaptive spring 8, and the dynamic supporting effect of the medium in the guide shoe head 4 and the mechanical structure on the self-adaptive cutter 5 is improved.
In order to improve the reaming performance of the shoe, a circle of wear-resistant surfacing layers 9 are arranged on the outer wall of the self-adaptive mounting hole 45, and the wear resistance and the anti-denudation performance of the front end of the shoe head 4 are improved by designing the wear-resistant surfacing layers 9.
As shown in fig. 1-5, the first special-shaped sinking groove 49 is arranged at the shortest bus position of the guide shoe head 4, a pair of second special-shaped sinking grooves 410 are arranged at two sides of the longest bus position of the guide shoe head 4, and the three water outlet channels 41 are respectively and obliquely communicated with the first special-shaped sinking groove 49 and the two second special-shaped sinking grooves 410. The first shaped sinking groove 49 and the second shaped sinking groove 410 have similar structures, the shape on the second cylindrical section 43 is a partial cylindrical curved surface, the part on the eccentric conical section 44 is a paraboloid-like structure, and the first shaped sinking groove 49 and the second shaped sinking groove 410 can be matched with the radians of the second cylindrical section 43 and the eccentric conical section 44 to form a certain space allowance, so that the underground circulating fluid medium can conveniently wash geological components in the reaming direction, a continuous circulating channel is formed, and the casing running capacity of the equipment is improved.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an rotatory guide shoe of eccentric self-adaptation turbine, includes the casing, the inside of casing is provided with the turbine, the week side of turbine is provided with the bearing assembly, the front end of casing is provided with the guide shoe head coaxial coupling with the turbine, the guide shoe head is eccentric structure and is provided with three water outlet channel on the guide shoe head, the guide shoe head includes the first columnar section of rotatory nested with the casing, first columnar section is provided with the second columnar section in the one end that keeps away from the turbine, be provided with eccentric taper section on the second columnar section, its characterized in that, the generating line of eccentric taper section is pitch arc and the inside of arc center orientation guide shoe head, eccentric tip of eccentric taper section is provided with the self-adaptation mounting hole, the self-adaptation mounting hole is provided with the self-adaptation card protrusion in the pore wall position of its axle center direction that is close to guide shoe head, the longest generating line position of eccentric taper section is provided with the self-adaptation saddle, be provided with self-adaptation cutter on the guide shoe head, self-adaptation cutter is including being located the inside the toothholder shoe body, the top of toothholder body is provided with the second columnar section, be provided with the carbide at the tip self-adaptation cutter head, the tip is provided with the tip, the tip is provided with the carbide and the tip is provided with the tip of carbide, the tip is provided with the tip and is provided with the tip self-adaptation cutter, the tip is provided with the carbide in the tip and is suitable for the tip of the tip, the tip is provided with the tip, the tip is suitable for the cutter.
2. The eccentric self-adaptive turbine rotary guide shoe according to claim 1, wherein the top end of the self-adaptive mounting hole is in transition through a round angle and the round angle is in contact fit with the side surface of the hard alloy cutter head, the hard alloy cutter head comprises a conical head section and a cylindrical section, the self-adaptive clamping groove is formed in the cylindrical section, and the circumferential arc length of the self-adaptive clamping groove and the circumferential arc length of the self-adaptive clamping protrusion are smaller than 1/3 of an arc.
3. The eccentric self-adaptive turbine rotary guide shoe according to claim 2, wherein the hard alloy cutter head is eccentrically arranged on the tooth holder body, the cylindrical surface of the cylindrical section and the side surface of the tooth holder body are partially coplanar, the part of the cylindrical section and the side surface of the tooth holder body coplanar faces the direction of the shortest generatrix of the eccentric conical section, and the side surface of the tooth holder body facing the longest generatrix of the eccentric conical section is provided with a limiting conical surface.
4. An eccentric adaptive turbine rotary guide shoe as in claim 3 wherein the bottom of the tooth holder body is provided with fluid balance pressure grooves which are of conical configuration.
5. The eccentric adaptive turbine rotary guide shoe according to any one of claims 1-4, wherein at least two arc-shaped guide grooves are formed in the side face of the cutter body, and the guide grooves are in sliding fit with sliding blocks arranged on the inner wall of the adaptive sliding edge.
6. The eccentric self-adaptive turbine rotary guide shoe according to claim 5, wherein the bottom of the outer end surface of the cutter body is in contact connection with the edge of the self-adaptive sliding edge under the condition that the self-adaptive cutter is at the maximum inclination angle position, the top of the self-adaptive sliding edge is provided with a movable striking plate, a reset spring is arranged between the movable striking plate and the self-adaptive sliding edge, and the bottom of the movable striking plate is in contact fit with the top surface of the cutter body.
7. The eccentric self-adaptive turbine rotary guide shoe according to claim 1, wherein a coaxial sleeve connected with the turbine is arranged in the first cylindrical section, the top of the coaxial sleeve is of a horn mouth structure, an adaptive spring is arranged between the coaxial sleeve and the adaptive cutter, the adaptive spring spirally extends towards the tooth holder direction, and the spiral periphery of the adaptive spring is in contact with the adaptive cutter.
8. The eccentric adaptive turbine rotary lead of claim 7 wherein the cross-sectional footprint of the adaptive spring is parabolic and the parabolic opening faces away from the spiral center of the adaptive spring.
9. The eccentric adaptive turbine rotary guide shoe of claim 1, wherein a circumferential hardfacing layer is provided on the outer wall of the adaptive mounting hole.
10. The eccentric self-adaptive turbine rotary guide shoe according to claim 1, wherein the guide shoe head is provided with a first special-shaped sinking groove at the shortest bus position, the guide shoe head is provided with a pair of second special-shaped sinking grooves at two sides of the longest bus position, and the three water outlet channels are respectively obliquely communicated with the first special-shaped sinking groove and the two second special-shaped sinking grooves.
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| CN202411832674.8A CN119288354B (en) | 2024-12-13 | 2024-12-13 | Eccentric self-adaptive turbine rotary guide shoe |
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| CN202411832674.8A CN119288354B (en) | 2024-12-13 | 2024-12-13 | Eccentric self-adaptive turbine rotary guide shoe |
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| CN119288354B true CN119288354B (en) | 2025-03-14 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106761472A (en) * | 2016-12-29 | 2017-05-31 | 德州汉隆石油设备有限公司 | Self- steering covers tube vibration guide shoe |
| CN115992654A (en) * | 2021-10-18 | 2023-04-21 | 中国石油化工股份有限公司 | Self-rotating floating shoes |
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|---|---|---|---|---|
| GB2339227B (en) * | 1998-01-24 | 2002-11-20 | Downhole Products Plc | Downhole Tool |
| US6401820B1 (en) * | 1998-01-24 | 2002-06-11 | Downhole Products Plc | Downhole tool |
| GB0404170D0 (en) * | 2004-02-25 | 2004-03-31 | Synergetech Ltd | Improved shoe |
| CN203452724U (en) * | 2013-08-30 | 2014-02-26 | 中国石油集团川庆钻探工程有限公司 | Sleeve pipe float shoe |
| CN208252057U (en) * | 2017-12-29 | 2018-12-18 | 博德世达（天津）能源科技有限公司 | A kind of reaming shoes |
| CN212249896U (en) * | 2020-06-05 | 2020-12-29 | 陕西海荔石油机械有限公司 | Vortex rotation type reaming guide shoe |
| CN112227957B (en) * | 2020-09-15 | 2023-04-07 | 长江大学 | Self-drilling tool Adaptation turbine guide shoe instrument |
| CN214035569U (en) * | 2020-11-27 | 2021-08-24 | 中国石油集团渤海钻探工程有限公司 | Eccentric hydraulic rotary guide shoe capable of repairing well |
| EP4303396A1 (en) * | 2022-07-06 | 2024-01-10 | Downhole Products Limited | Rasping shoe for non-rotational deployment of casing string |
| CN220667438U (en) * | 2023-05-20 | 2024-03-26 | 德州金玉石油机械科技有限公司 | Eccentric vibration rotary cementing tool |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761472A (en) * | 2016-12-29 | 2017-05-31 | 德州汉隆石油设备有限公司 | Self- steering covers tube vibration guide shoe |
| CN115992654A (en) * | 2021-10-18 | 2023-04-21 | 中国石油化工股份有限公司 | Self-rotating floating shoes |
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