CN117365329B - Downhole turbine driving sleeve shoe system - Google Patents
Downhole turbine driving sleeve shoe system Download PDFInfo
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- CN117365329B CN117365329B CN202311558862.1A CN202311558862A CN117365329B CN 117365329 B CN117365329 B CN 117365329B CN 202311558862 A CN202311558862 A CN 202311558862A CN 117365329 B CN117365329 B CN 117365329B
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- 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
- E21B17/14—Casing shoes for the protection of the bottom of the casing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to the technical field of petroleum and natural gas, in particular to a downhole turbine driving sleeve shoe system with a structure that the outer diameter of a turbine rotor is not larger than the inner diameter of a turbine stator; the invention provides a downhole turbine driving casing shoe system, which comprises an upper joint, a turbine power part and casing shoes, wherein the upper joint is connected with the turbine power part; the turbine power part comprises a turbine stator shell, a turbine stator is arranged in the turbine stator shell, a turbine rotor is connected in a matched mode in the turbine stator, and the outer diameter of the turbine rotor is not larger than the inner diameter of the turbine stator; when the turbine stator is connected with the upper joint, the turbine rotor is connected with the sleeve shoes; when the turbine stator is connected with the sleeve shoes, the turbine rotor is connected with the upper joint. When the high-pressure drilling fluid passes through the turbine rotor and the turbine stator, the kinetic energy of the fluid is converted into mechanical energy, so that the casing shoes are driven to rotate, and casing drilling or casing running operation is performed.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas, in particular to a tool for helping or promoting a casing to smoothly descend to a preset position in the process of petroleum or natural gas well completion, and more particularly relates to a downhole turbine driving casing shoe system with a structure that the outer diameter of a turbine rotor is not larger than the inner diameter of a turbine stator.
Background
With the increasing demand of petroleum and gas in China, the exploitation of petroleum and gas increasingly adopts high-difficulty well structures such as large-displacement wells, complex track wells and the like. During the operation of these types of wells, the situation of difficult casing running caused by factors such as long open hole section, complex stratum and the like is often encountered, and great challenges are brought to the implementation of petroleum and gas wells. In order to solve the challenges, the power sleeve shoes are used for driving the sleeve shoes by utilizing hydraulic power to overcome the problem of sleeve running blockage caused by complex stratum and the like.
The use of a turbine drill to drive a downhole tool is a common and effective way of driving downhole tools; however, the conventional turbine drilling tool has the disadvantages of complex structure, overlong length, difficult processing and assembly, lower power per unit length and the like, and has great limitation on application.
The conventional turbine drilling tool adopts a multistage independent turbine stator and turbine rotor set structure, a certain axial gap and a certain radial gap are required to be kept between each stage of stator and rotor of the turbine drilling tool and between stator and rotor of adjacent stator and rotor sets, the energy utilization efficiency of a tool with overlarge gap is reduced, and the tool failure caused by collision between parts is caused if the tool with overlarge gap does not exist. The stator and rotor groups with a large number can generate certain tolerance in the processing process, and certain position accumulated deviation can also be generated in the assembling process. Therefore, the gap amount must be increased to ensure that no collision occurs between the stator and the rotor. The main disadvantage of large gaps is firstly the reduced energy conversion efficiency and secondly the increased tool length of the same order. In the assembly process, the conventional turbine drilling tool has a large number of parts, and the assembly work is complicated.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention provides a downhole turbine driven casing shoe system comprising an upper joint, a turbine power section, and a casing shoe; the turbine power part comprises a turbine stator shell, a turbine stator is arranged in the turbine stator shell, a turbine rotor is connected in a matched mode in the turbine stator, and the outer diameter of the turbine rotor is not larger than the inner diameter of the turbine stator; when the turbine stator is connected with the upper joint, the turbine rotor is connected with the sleeve shoes; when the turbine stator is connected with the sleeve shoes, the turbine rotor is connected with the upper joint.
Optionally, an inner turbine group is arranged on the inner wall of the turbine stator, and an outer turbine group corresponding to the inner turbine group is arranged on the outer wall of the turbine rotor.
Optionally, the turbine liquid guiding gutter is arranged on the inner turbine group, the turbine stress wing is arranged on the outer turbine group, the turbine stator is connected with the upper joint, and the turbine rotor is connected with the sleeve shoes.
Optionally, the downhole turbine driving shoe system further comprises a filtering system, one end of the filtering system is arranged on the inner side of the upper joint, and the other end of the filtering system is inserted into the inner side of the turbine rotor so as to filter liquid entering the turbine power part from the upper joint.
Optionally, turbine stress wings are arranged on the inner turbine set, turbine liquid diversion grooves are arranged on the outer turbine set, the turbine stator is connected with the sleeve shoes, and the turbine rotor is connected with the upper joint.
Optionally, the turbine liquid diversion trench is provided with a radial diversion surface.
Optionally, a rupture disc is provided inside the turbine rotor to close off the hollow chamber within the turbine rotor, to generate turbine power when liquid flows through the combination of the turbine stator and turbine rotor, and to rupture when the combination of the turbine stator and turbine rotor is blocked.
Optionally, a bearing system is further included, the bearing system including an upper centralizing bearing and a lower centralizing bearing; the upper centralizing bearing is arranged between the turbine power part and the upper joint; the lower centralizing bearing is arranged between the turbine power part and the sleeve shoe.
Compared with the prior art, the invention at least comprises the following beneficial effects:
According to the underground turbine driving casing shoe system, when high-pressure drilling fluid passes through the turbine rotor and the turbine stator, the kinetic energy of the fluid is converted into mechanical energy, so that the casing shoe is driven to rotate, and casing drilling or casing running operation is performed; the outer diameter of the turbine rotor is not larger than the inner diameter of the turbine stator, the plurality of turbine rotors and the plurality of turbine stators can be respectively processed and respectively assembled, and then the plurality of turbine rotors and the plurality of turbine stators are respectively combined together as a whole; the outer circle matching surfaces and the inner hole matching surfaces can be processed for a plurality of turbine rotors which are combined together, so that the matching precision is improved, the clearance is reduced, and the power conversion efficiency is improved; in addition, due to the design of the structure, the risk of collision of the end faces of the turbine stator and the turbine rotor can be avoided, so that the requirement on axial precision is reduced, and the processing and the assembly are convenient; the structural tool is of an all-metal structure, and the use temperature is not limited by the underground temperature.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic general structure of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an upper joint according to an embodiment of the invention.
Fig. 3 is a schematic view of a stator structure of a turbine stator according to a first embodiment of the present invention.
Fig. 4 is a schematic view of a turbine rotor according to a first embodiment of the present invention.
Fig. 5 is a schematic view of a turbine stator housing according to a first embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a filtration system according to a first embodiment of the present invention.
Fig. 7 is a schematic structural view of an upper centralizing bearing according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of a thrust bearing according to a first embodiment of the present invention.
Fig. 9 is a schematic structural view of a centralizing bearing in a main bearing system according to a first embodiment of the present invention.
Fig. 10 is a schematic structural view of a overshoe according to a first embodiment of the invention.
Fig. 11 is a schematic general structure of a second embodiment of the present invention.
Fig. 12 is a schematic structural diagram of an upper joint in a second embodiment of the present invention.
Fig. 13 is a schematic structural view of a turbine stator according to a second embodiment of the present invention.
Fig. 14 is a schematic view of a turbine rotor according to a second embodiment of the present invention.
Fig. 15 is a schematic view of a turbine stator housing according to a second embodiment of the present invention.
Fig. 16 is a schematic structural view of a shoes with sleeves according to the second embodiment of the invention.
Fig. 17 is a schematic partial structure of a third embodiment of the present invention.
Fig. 18 is a schematic structural diagram of a cyclone connection member in a third embodiment of the invention.
Fig. 19 is a schematic diagram of a second structure of a cyclone connector in a third embodiment of the invention.
Fig. 20 is a schematic structural view of a second land in a third embodiment of the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The invention is described in further detail below with reference to fig. 1-20.
Example 1
As shown in fig. 1, 2,3,4, 5, 6, 7, 8, 9 and 10, a downhole turbine driven casing shoe system includes an upper sub 10, a turbine power section 20 and a casing shoe 40; the turbine power part 20 comprises a turbine stator shell 21, a turbine stator 22 is arranged in the turbine stator shell 21, a turbine rotor 23 is connected in a matched mode in the turbine stator 22, and the outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22; the turbine stator 22 is connected to the upper joint 10, and the turbine rotor 23 is connected to the shoes 40. An inner turbine group is disposed on the inner wall of the turbine stator 22, and an outer turbine group corresponding to the inner turbine group is disposed on the outer wall of the turbine rotor 23. The inner turbine group is provided with turbine liquid diversion grooves, the outer turbine group is provided with turbine stress wings, the turbine stator 22 is connected with the upper joint 10, and the turbine rotor 23 is connected with the sleeve shoes 40. And the turbine liquid diversion trench is provided with a radial diversion surface. The turbine stator 22 is formed by sequentially connecting a plurality of stators; the turbine rotor 23 is formed by sequentially connecting a plurality of rotors.
The invention relates to an underground turbine driving sleeve shoe system, which is an underground turbine driving sleeve shoe system with a structure that the outer diameter of a turbine rotor 23 is not larger than the inner diameter of a turbine stator 22, when high-pressure liquid passes through the stator of the turbine stator 22, vortex is formed, a radial flow guide surface of the stator guides the vortex to the rotor of an adjacent turbine rotor 23 to drive the rotor to rotate, and all the rotors rotate to drive sleeve shoes 40 to rotate; the outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22, so that all the stators of the turbine stator 22 can be first installed into the turbine stator housing 21, if necessary, the inner diameter of the stators can be finished, all the stators can be assembled into the turbine stator, and if necessary, the outer circumference of the turbine rotor 23 can be integrally finished, thereby increasing the fitting accuracy. Compared with the conventional turbine drilling tool, the conventional turbine stator has the advantages that the inner diameter of the turbine stator is smaller than the outer diameter of the turbine rotor, the turbine stator and the turbine rotor are required to be assembled in a single matching way, the assembly is complex, the radial matching precision is not high due to the accumulated error factor of machining, the proportion of liquid which does not pass through turbine stator blades is increased, the turbine power efficiency is reduced, and meanwhile, the axial clearance is required to be increased in order to avoid collision between adjacent stator and rotor due to the consideration of the accumulated error factor, so that the length of a tool is increased, and the efficiency of the tool is influenced. With the technique of the present invention, since the turbine rotor 23 and the turbine stator 22 can be precisely fitted, the amount of liquid leakage without work becomes small, and the tool efficiency increases. Meanwhile, the turbine rotor 23 and the turbine stator 22 can be integrated, so that the structure is simplified, the machining precision is improved, and the assembly complexity is reduced.
The outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22, turbine liquid diversion grooves are arranged in the turbine stator 22, turbine stress wings are arranged outside the turbine rotor 23, radial diversion surfaces are added to the turbine diversion grooves except for the turbine structure of a common downhole tool, and the turbine rotor 23 and the turbine stator 22 are matched to form a part for generating torque, and form a turbine power part together with the turbine stator shell 21.
The working principle and the beneficial effects of the technical scheme are as follows: in this embodiment, a specific structure of a turbine power unit is provided, where the turbine power unit includes a structure in which an outer diameter of a turbine rotor 23 is not greater than an inner diameter of a turbine stator 22, turbine liquid guide grooves are disposed in the turbine stator 22, turbine stress wings are disposed outside the turbine rotor 23, and radial guide surfaces are added to the structure of the turbine guide grooves except for a turbine structure with a conventional downhole tool. Because the outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22, the turbine grooves in the turbine stator 22 have the function of forming vortex flow of a common turbine stator, and the radial flow guiding surface of the turbine grooves can further guide the vortex flow to the stressed wings at the position with smaller diameter to form torque so as to drive the turbine rotor 23 to rotate, and the turbine rotor 23 further drives the sleeve shoes 40 to rotate. The conventional turbine stator has the inner diameter smaller than the outer diameter of the turbine rotor, the turbine stator and the turbine rotor are required to be assembled in a single matching way, the assembly is complex, the radial matching precision is not high due to the accumulated error factor of processing, the proportion of liquid not passing through the turbine stator blades is increased, the turbine power efficiency is reduced, and meanwhile, the axial clearance is required to be increased in order to avoid collision between adjacent stator and rotor due to the consideration of the accumulated error factor, so that the length of a tool is increased, and the efficiency of the tool is influenced. With the technique of the present invention, since the turbine rotor 23 and the turbine stator 22 can be precisely fitted, the amount of liquid leakage without work becomes small, and the tool efficiency increases.
The turbine rotor 1 may be an integral structure, and a plurality of rotors are integrally processed; it is also possible to machine a plurality of rotor segments and then to combine them to form the turbine rotor 1, if necessary with further finishing of the outer diameter of the turbine rotor 1.
The turbine rotor 1 is integrally machined, the integrally machined turbine rotor 1 is easier to improve the accuracy of the outer diameter of the turbine rotor 1, the clearance matched with the turbine stator 22 is reduced, the leakage amount is reduced, and the efficiency is improved. If the rotor is not integrally processed, but is combined by adopting a plurality of turbine rotor sections, the rotors of a plurality of turbines can be combined together firstly during assembly, and if necessary, the combined turbine rotors can be further processed, so that the matching precision with the turbine stator is improved.
The turbine stator 22 has a plurality of stators, which may be individually machined and then assembled together, or may be integrally machined. A plurality of stators may be machined and then fitted into the turbine stator housing 21 by interference fit, and if necessary, the inner circles of the assembled turbine stators 22 may be finished, improving the accuracy of fit with the turbine rotor 1, reducing the fit clearance, and improving the efficiency of the tool. The turbine stator 22 may also be machined as a single piece, which also better ensures uniformity of the inner diameter dimensions of the plurality of stators.
The turbine rotor 23 is hollow and is made of drillable materials such as aluminum, aluminum alloy, copper alloy, etc., and PDC or roller cone bits commonly used in drilling can be drilled through the rotor. In particular designs, the inner diameter of the hollow turbine rotor 23 may be increased to a degree that will ensure that a drill bit of a certain size may pass through it in accordance with the drilling procedure, and the material is not limited by drillability. The hollow structure reduces the time to drill through, and the drillable material allows for greater tool flexibility, particularly when using and running technical casing through which the drill bit can drill. In particular designs, the inner diameter of the hollow turbine rotor 23 may be increased to a degree that will ensure that a drill bit of a certain size may pass through it in accordance with the drilling procedure, and the material is not limited by drillability. Meanwhile, the drilling time can be saved, and the operation cost can be saved.
Inside the turbine rotor 23 is provided a rupture disc 60, which rupture disc 60 may be secured to the inside of the turbine rotor 23 by means of a fixation pin, or may be secured by means of threads or the like. The rupture disc 60 blocks the hollow shaft and fluid flow through the turbine assembly generates turbine power and if large solids are present in the fluid, the pressure breaks the rupture disc 60 to maintain the circulation path as the solids block the fluid to block the turbine assembly.
As shown in fig. 1, the downhole turbine driving casing shoe system is further provided with a bearing system 30, comprising an upper centralizing bearing 31 and a lower main bearing system, the main bearing system further comprising a centralizing bearing 32 and two thrust bearings 33 for bearing bi-directional forces. There are two centralizing bearings located at the upper and lower portions of the turbine rotor 23, respectively. The shown centralizing bearing is a sliding bearing, the sliding surface is sprayed or embedded with hard alloy centralizing bearing, and the contact surface of the sliding bearing adopts sprayed hard alloy powder or embedded with hard alloy blocks to improve the wear resistance; the centralizing bearing can also be a ball bearing or other bearings; the two thrust bearings 33 are embedded PDC bearings commonly used in downhole motors for drilling, and are subjected to bi-directional axial forces.
In the downhole turbine driven shoe system, the shoe 40 is provided and may be replaced with a drill bit, shoe, etc. when applied to drilling or workover.
The casing shoe 40 in the present embodiment includes a body 41, specifically, the body 41 is mounted at the front end of the turbine rotor 1, and one or more of alloy, diamond and diamond composite sheets can be welded or embedded on the outer part of the body 41 according to the requirement, so as to provide wear resistance or reaming capability; the sleeve shoe 40 is provided with a guide head 42 which has a shape for guiding, the cross section of the sleeve shoe is gradually reduced from top to bottom, and the cross section of the sleeve shoe can be any shape; the guide head 42 is made of aluminum alloy or other drillable materials, or can be made of bimetal, and the drillable materials are only used in the part needing penetration; the outer portion of the seeker 42 may optionally be welded or cemented carbide, diamond, or the like superhard material as desired to provide rock breaking or wear resistance.
The downhole turbine driving shoe system further comprises a filtering system 50, one end of the filtering system 50 is arranged on the inner side of the upper joint 10, and the other end of the filtering system 50 is inserted into the inner side of the turbine rotor 23 so as to filter liquid entering the turbine power part 20 from the upper joint 10.
The filter system 50 is a filter screen.
Example two
As shown in fig. 11, 12, 13, 14, 15 and 16, a downhole turbine driven casing shoe system includes an upper sub 10, a turbine power section 20 and a casing shoe 40; the turbine power part 20 comprises a turbine stator shell 21, a turbine stator 22 is arranged in the turbine stator shell 21, a turbine rotor 23 is connected in a matched mode in the turbine stator 22, and the outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22; the turbine stator 22 is connected to the shoe 40, and the turbine rotor 23 is connected to the upper joint 10. An inner turbine group is disposed on the inner wall of the turbine stator 22, and an outer turbine group corresponding to the inner turbine group is disposed on the outer wall of the turbine rotor 23. The inner turbine set is provided with turbine stress wings, the outer turbine set is provided with turbine liquid diversion grooves, the turbine stator 22 is connected with the sleeve shoes 40, and the turbine rotor 23 is connected with the upper joint 10. And the turbine liquid diversion trench is provided with a radial diversion surface. The downhole turbine driven shoe system further includes a rupture disc 60, the rupture disc 60 being mounted within the turbine rotor 23 to seal off a hollow chamber within the turbine rotor 23, to generate turbine power when liquid flows through the combination of the turbine stator 22 and the turbine rotor 23, and to rupture when the combination of the turbine stator 22 and the turbine rotor 23 is plugged. The turbine stator 22 is formed by sequentially connecting a plurality of stators; the turbine rotor 23 is formed by sequentially connecting a plurality of rotors.
In this embodiment, a specific structure of a turbine power unit is provided, and the turbine power unit of the structure includes a structure in which the outer diameter of a turbine rotor is not greater than the inner diameter of a turbine stator, and the difference between the second embodiment and the first embodiment is that the turbine stator 22 rotates to drive the shoes 40 to rotate. Turbine rotor 23 is provided with turbine fluid flow channels and turbine stator 22 is provided with turbine stress wings, the turbine flow channels being configured to provide radial flow surfaces in addition to turbine configurations of conventional downhole tools. Because the outer diameter of the turbine rotor 23 is not larger than the inner diameter of the turbine stator 22, the turbine grooves outside the turbine rotor 23 have the function of forming vortex flow of a common turbine stator, and the radial direction flow guiding surface of the turbine grooves can further guide the vortex flow to the stressed wings positioned at the position with larger diameter to form torque so as to drive the stator to rotate, and the stator further drives the sleeve shoes 40 to rotate. The conventional turbine stator has the inner diameter smaller than the outer diameter of the turbine rotor, the turbine stator and the turbine rotor are required to be assembled singly, the assembly is complex, the radial matching precision is not high due to the accumulated error factor of processing, the proportion of liquid not passing through the turbine stator blades is increased, the turbine power efficiency is reduced, and meanwhile, the axial clearance is required to be increased in order to avoid collision between adjacent stator and rotor due to the consideration of the accumulated error factor, the length of a tool is increased, and the efficiency of the tool is influenced. With the technique of the present invention, since the turbine rotor 23 and the turbine stator 22 can be precisely fitted, the amount of liquid leakage without work becomes small, and the tool efficiency increases.
The turbine power section 20 includes a turbine stator 22, a stator housing 21, and a turbine rotor 23. The turbine rotor of the general turbine drilling tool is formed by stringing a plurality of rotors of turbine structures with the same or different structures together; in the present invention, the turbine rotor 23 is of an integral structure. The turbine rotor 23 is machined as a whole; multiple rotors may also be machined and then combined to form a rotor assembly, and then the outer diameter further finished if necessary.
The turbine rotor 23 is integrally formed, the integrally formed turbine rotor 23 is easier to improve the accuracy of the outer diameter of the turbine rotor 23, the fit clearance with the turbine stator 22 is reduced, the leakage is reduced, and the efficiency is improved. If the rotor is not integrally processed but is combined by a plurality of rotors, the rotors can be combined together firstly during assembly, and if necessary, the combined turbine rotor 23 can be further processed, so that the matching precision with the turbine stator 22 is improved.
The turbine stator 22 has a plurality of stators, which may be individually machined and then assembled together, or may be integrally machined. A plurality of stators may be machined and then fitted into the turbine stator housing 21 by interference fit, and if necessary, the inner circles of the assembled turbine stators 22 may be finished, improving the accuracy of fit with the turbine rotor 1, reducing the fit clearance, and improving the efficiency of the tool. The turbine stator 22 may also be machined as a single piece, which also better ensures uniformity of the inner diameter dimensions of the plurality of stators.
The turbine rotor 23 is hollow and is made of drillable materials such as aluminum, aluminum alloy, copper alloy, etc., and PDC or roller cone bits commonly used in drilling can be drilled through the rotor. In particular designs, the inner diameter of the hollow turbine rotor 23 may be increased to a degree that will ensure that a drill bit of a certain size may pass through it in accordance with the drilling procedure, and the material is not limited by drillability. The hollow structure reduces the time to drill through, and the drillable material allows for greater tool flexibility, particularly when using and running technical casing through which the drill bit can drill. In particular designs, the inner diameter of the hollow turbine rotor 23 may be increased to a degree that will ensure that a drill bit of a certain size may pass through it in accordance with the drilling procedure, and the material is not limited by drillability. Meanwhile, the drilling time can be saved, and the operation cost can be saved.
Inside the turbine rotor 23 is provided a rupture disc 60, which rupture disc 60 may be secured to the inside of the turbine rotor 23 by means of a fixation pin, or may be secured by means of threads or the like. The rupture disc 60 blocks the hollow shaft and fluid flow through the turbine assembly generates turbine power and if large solids are present in the fluid, the pressure breaks the rupture disc 60 to maintain the circulation path as the solids block the fluid to block the turbine assembly.
The downhole turbine driving casing shoe system is further provided with a bearing system 30 comprising a lower centralizing bearing 34 and an upper main bearing system, the main bearing system further comprising a centralizing bearing 32 and thrust bearings 31 and 33 for bearing bi-directional forces.
The working principle and the beneficial effects of the technical scheme are as follows: there are two centralizing bearings located at the upper and lower portions of the turbine rotor 23, respectively. The shown centralizing bearing is a sliding bearing, the sliding surface is sprayed or embedded with hard alloy centralizing bearing, and the contact surface of the sliding bearing adopts sprayed hard alloy powder or embedded with hard alloy blocks to improve the wear resistance; the centralizing bearing can also be a ball bearing or other bearings; the two thrust bearings 33 are embedded PDC bearings commonly used in downhole motors for drilling, and are subjected to bi-directional axial forces.
The shoe 40 of the present invention may be replaced with a drill bit, a shoe, or the like when applied to drilling or workover.
The casing shoe 40 in this embodiment includes a body 41, specifically, the body 41 is mounted at the front end of the turbine rotor 23, and one or more of alloy, diamond, and diamond composite sheets can be welded or embedded on the outer part of the body 41 according to the requirement, so as to provide wear resistance or reaming capability; the sleeve shoe 40 is provided with a guide head 42 which has a shape for guiding, the cross section of the sleeve shoe is gradually reduced from top to bottom, and the cross section of the sleeve shoe can be any shape; the guide head 42 is made of aluminum alloy or other drillable materials, or can be made of bimetal, and the drillable materials are only used in the part needing penetration; the outer portion of the seeker 42 may optionally be welded or cemented carbide, diamond, or the like superhard material as desired to provide rock breaking or wear resistance.
Example III
As shown in fig. 1, 17, 18, 19 and 20, on the basis of the first embodiment, when the turbine rotor 23 is connected with the casing shoe 40, a rotational flow connecting piece 70 is further arranged between the turbine rotor 23 and the casing shoe 40; the swirl connection 70 comprises a first connection disc 71, the first connection disc 71 being sealingly secured to the inner wall of the turbine rotor 23 and being located between the shoes 40 and the rupture disc 60; the first connecting disc 71 is uniformly and circumferentially provided with a plurality of first through holes, the plurality of first through holes are connected with a plurality of first bending guide pipes 72 fixed on the bottom surface of the first connecting disc 71, the central through holes of the first connecting disc 71 are rotationally connected with a rotating shaft 73, a rotational flow impeller 74 is fixed on the rotating shaft 73, and the output ports of the plurality of first bending guide pipes 72 are arranged towards a plurality of wheel surfaces of the rotational flow impeller 74; the rotation shaft 73 is connected to a second connection pad 75, and the second connection pad 75 is connected to the inner side surface of the shoes 40.
The rupture disc 60 in the invention blocks the hollow shaft to enable liquid to flow through the turbine group to generate turbine power, if the liquid is in large solid, the pressure breaks the rupture disc 60 when the solid blocks the liquid to block the turbine group, when the turbine group is blocked, the turbine power part 20 in the invention can not continuously drive the sleeve shoes 40 to rotate, in order to solve the problem that the sleeve shoes 40 can not rotate when the turbine group is blocked, when the turbine rotor 23 is connected with the sleeve shoes 40, a rotational flow connecting piece 70 is arranged between the turbine rotor 23 and the sleeve shoes 40, after the rupture disc 60 breaks, water flows downwards, can flow into a plurality of first bending guide pipes 72 through a plurality of first through holes uniformly and circularly arranged on the first connecting disc 71, and is sprayed on a plurality of wheel faces of the rotational flow impeller 74 through the plurality of first bending guide pipes 72 under the action of water pressure, so as to form rotational flow action, so that the rotational flow impeller 74 rotates, and when the rotational flow impeller 74 rotates, the rotational flow impeller 73 drives the second connecting disc 75 and the sleeve shoes 40 connected with the second connecting disc 75 to rotate through the rotational flow connecting piece 73, and the sleeve shoes 40 rotate, after the rupture disc 23 is connected with the sleeve shoes 40, water drainage holes are arranged on the sleeve shoes 40 so as to enter the circulation channel 70, and the water drainage channel is formed between the circulation channel and the water drainage channel; so that the casing shoe 40 can continue to rotate and descend, effectively grind the inner wall of the well bore, break the well bore obstacle and improve the well completion quality.
The second connecting disc 75 comprises a sliding disc 751 and a connecting disc 752, the centers of the sliding disc 751 and the connecting disc 752 slide on the polygonal surface of the rotating shaft 73, and the lower end of the sliding disc 751 is connected with the connecting disc 752 through a buffer compression spring 753; the upper surface of the sliding disk body 751 is provided with an upper annular groove, the upper annular groove is communicated with a lower annular groove arranged in the sliding disk body 751, the outer diameter of the lower annular groove is larger than that of the upper annular groove, a limiting ring is in sliding fit in the lower annular groove, the limiting ring is fixed at the lower end of a limiting shaft 754, the middle part of the limiting shaft 754 slides in the upper annular groove, the upper end of the limiting shaft 754 is rotationally connected with the lower end of a transmission link 755, the upper end of the transmission link 755 rotates at the eccentric position of the wheel surface of a worm gear 756 through an eccentric shaft, the worm gear 756 is meshed with a worm structure on the rotating shaft 73, and the worm gear 756 rotates on a hanger on the lower surface of the first connecting disk 71.
When the rotating shaft 73 rotates, the worm structure on the rotating shaft 73 is meshed to drive the worm gear 756 to rotate, when the worm gear 756 rotates, one end of the transmission link 755 can be driven to perform circular motion, the other end of the transmission link 755 drives the sliding disc 751 to perform reciprocating sliding in the up-down direction on the polygonal surface of the rotating shaft 73, the limiting ring is fixed at the lower end of the limiting shaft 754, the middle part of the limiting shaft 754 slides in the upper annular groove, the upper end of the limiting shaft 754 is rotationally connected with the lower end of the transmission link 755, so that the transmission link 755 drives the sliding disc 751 to move up and down without affecting the rotating motion of the sliding disc 751, when the sliding disc 751 rotates, the limiting shaft 754 slides in the upper annular groove, the limiting ring slides in the lower annular groove, and the limiting ring plays a role in connecting and limiting; the sliding tray 751 drives the receiving tray 752 to synchronously move when performing up-and-down reciprocating movement and rotating movement, so that the sleeve shoes 40 connected with the receiving tray 752 perform up-and-down reciprocating movement and rotating movement, and the lowering effect of the sleeve shoes 40 in the well hole is further improved; the lower end of the sliding tray 751 is connected with the mounting tray 752 through a buffer compression spring 753; so that the sleeve shoes 40 have certain elastic buffering when encountering resistance, the sleeve shoes 40 can conveniently process obstacles through rotating motion and up-and-down reciprocating motion for more time, and the obstacle breaking effect is improved.
The outside of a plurality of xarm of connecing dress disk 752 is equipped with an inside and outside slide respectively, and a flexible horizontal pole 757 of sliding in every inside and outside slide, flexible horizontal pole 757 outer end is equipped with the adapter plate, and the stopper that flexible horizontal pole 757 inner is fixed slides in the spacing spout of xarm upper surface, and stopper threaded connection is in adjusting screw 758 middle part, and adjusting screw 758 rotates on the xarm. The contact position between the telescopic cross rod 758 and the limiting block can be changed by rotating the adjusting screw 758, so that the telescopic cross rod 757 is driven to slide in the inner and outer directions in the inner and outer slide ways outside the cross arm, the position of the outer end connecting plate of the telescopic cross rod 757 is convenient to adjust, the telescopic cross rod 757 is convenient to be connected with the sleeve shoes 40 with different inner diameters, the applicability is wider, and the connection stability can be improved.
The vertical screw 759 is fixed on the mounting tray body 752, the middle part of the vertical screw 759 slides in a vertical hole of the sliding tray body 751, the limit nut is connected with the vertical screw 759 in a threaded manner, the limit nut is blocked on the upper surface of the sliding tray body 751, the contact position of the limit nut and the vertical screw 759 can be changed by rotating the limit nut, and therefore the initial compression amplitude of the buffer pressure spring 753 between the sliding tray body 751 and the mounting tray body 752 is changed, and the buffer performance is adjusted.
The first connecting disc 71 is further uniformly and circumferentially provided with a plurality of second through holes, the second through holes and the first through holes are alternately arranged at intervals, the second through holes are connected with a plurality of second bending guide pipes 76 fixed on the bottom surface of the first connecting disc 71, the second bending guide pipes 76 and the first bending guide pipes 72 are alternately arranged at intervals, and the output ports of the second bending guide pipes 76 are arranged towards a plurality of wheel surfaces of the cyclone impeller 74; a plurality of plugging sliding plates 77 are slidably matched in a sliding groove frame on the upper surface of the first connecting disc 71, and the plurality of plugging sliding plates 77 are plugged on the plurality of second through holes; the plurality of plugging sliding plates 77 are rotationally connected with the lower ends of the plurality of inclined connecting rods 78, the upper ends of the plurality of inclined connecting rods 78 uniformly rotate around the bearing seat 79, a guide shaft at the lower end of the bearing seat 79 slides in a guide groove at the top of the rotating shaft 73, and the lower end of the bearing seat 79 is connected with the upper surface of the first connecting disc 71 through a bearing spring; the bearing spring is sleeved outside the rotating shaft 73 and the guide shaft.
In a normal state, the first through holes and the first curved ducts 72 are in an open state so as to guide water flow, when the water pressure is high, in order to increase the rotation speed of the sleeve shoe 40, the bearing seat 79 can drive the upper ends of the inclined connecting rods 78 to move downwards when receiving high water flow impact pressure, so that the lower ends of the inclined connecting rods 78 drive the blocking sliding plates 77 to slide outwards to release the blocking of the second through holes, so that water flow can be sprayed towards the surfaces of the vortex impeller 74 through the output ports of the second curved ducts 76, the water inlet speed is increased, the spraying impact effect is improved, the rotation speed of the vortex impeller 74 is further improved, and finally the rotation speed of the sleeve shoe 40 is improved through the cooperation of the second curved ducts 76 and the first curved ducts 72.
The top of the pressure bearing seat 79 is provided with an inverted cone pressure bearing groove; the reverse cone-shaped pressure-bearing groove is positioned below the rupture disc 60, and the reverse cone-shaped pressure-bearing groove can gather water flow better so as to bear more pressure, so that the unsealing effect of the plurality of second through holes is improved to a certain extent.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Claims (7)
1. A downhole turbine driven casing shoe system comprising an upper joint (10), a turbine power section (20) and a casing shoe (40); the turbine power part (20) comprises a turbine stator shell (21), a turbine stator (22) is arranged in the turbine stator shell (21), a turbine rotor (23) is connected in a matched mode in the turbine stator (22), and the outer diameter of the turbine rotor (23) is not larger than the inner diameter of the turbine stator (22); when the turbine stator (22) is connected with the upper joint (10), the turbine rotor (23) is connected with the sleeve shoe (40);
When the turbine rotor (23) is connected with the sleeve shoe (40), a rotational flow connecting piece (70) is arranged between the turbine rotor (23) and the sleeve shoe (40); the rotational flow connecting piece (70) comprises a first connecting disc (71) which is fixed on the inner wall of the turbine rotor (23) in a sealing way; a plurality of first through holes are uniformly and circumferentially arranged on the first connecting disc (71), the plurality of first through holes are connected with a plurality of first bending guide pipes (72) fixed on the bottom surface of the first connecting disc (71), a rotating shaft (73) is rotatably connected in the central through hole of the first connecting disc (71), a rotational flow impeller (74) is fixed on the rotating shaft (73), and the output ports of the plurality of first bending guide pipes (72) are arranged towards a plurality of wheel surfaces of the rotational flow impeller (74); the rotating shaft (73) is connected with a second connecting disc (75), and the second connecting disc (75) is connected to the inner side surface of the sleeve shoe (40);
And a rupture disc (60), the rupture disc (60) being mounted within the turbine rotor (23) to seal off a hollow chamber within the turbine rotor (23) to generate turbine power when liquid flows through the combination of the turbine stator (22) and the turbine rotor (23) and to rupture when the combination of the turbine stator (22) and the turbine rotor (23) is plugged.
2. A downhole turbine driven casing shoe system according to claim 1, wherein an inner turbine group is provided on the inner wall of the turbine stator (22), and an outer turbine group corresponding to the inner turbine group is provided on the outer wall of the turbine rotor (23).
3. A downhole turbine driven casing shoe system according to claim 2, wherein turbine liquid guiding grooves are provided on the inner turbine set, turbine stress wings are provided on the outer turbine set, turbine stators (22) are connected with the upper joint (10), and turbine rotors (23) are connected with the casing shoe (40).
4. A downhole turbine driven shoe system according to claim 3, further comprising a filter system (50), one end of the filter system (50) being mounted inside the upper joint (10), the other end of the filter system (50) being inserted inside the turbine rotor (23) for filtering liquid entering the turbine power section (20) from the upper joint (10).
5. A downhole turbine driven casing shoe system according to claim 3, wherein the turbine liquid flow guide groove is provided with a radial flow guide surface.
6. The downhole turbine driven casing shoe system according to claim 1, wherein the second connection disc (75) comprises a sliding disc body (751) and a receiving disc body (752), centers of the sliding disc body (751) and the receiving disc body (752) are slid on a polygonal surface of the rotating shaft (73), and a lower end of the sliding disc body (751) is connected with the receiving disc body (752) through a buffer compression spring (753); the upper surface of the sliding disc body (751) is provided with an upper annular groove, the upper annular groove is communicated with a lower annular groove arranged in the sliding disc body (751), the outer diameter of the lower annular groove is larger than that of the upper annular groove, a limiting ring is in sliding fit with the lower end of a limiting shaft (754), the middle part of the limiting shaft (754) slides in the upper annular groove, the upper end of the limiting shaft (754) is rotationally connected with the lower end of a transmission connecting rod (755), the upper end of the transmission connecting rod (755) rotates at the eccentric position of the wheel surface of a worm wheel (756) through an eccentric shaft, the worm wheel (756) is meshed with a worm structure on a rotating shaft (73), and the worm wheel (756) rotates on a hanger on the lower surface of a first connecting disc (71).
7. The downhole turbine driving sleeve shoe system according to claim 6, wherein an inner slide way and an outer slide way are respectively arranged on the outer sides of the cross arms of the receiving disc body (752), a telescopic cross rod (757) slides in each inner slide way and the outer ends of the telescopic cross rods (757) are provided with receiving plates, limiting blocks fixed on the inner ends of the telescopic cross rods (757) slide in limiting sliding grooves on the upper surfaces of the cross arms, the limiting blocks are in threaded connection with the middle of an adjusting screw (758), and the adjusting screw (758) rotates on the cross arms.
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| CN202311558862.1A CN117365329B (en) | 2023-11-21 | 2023-11-21 | Downhole turbine driving sleeve shoe system |
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| CN117365329B true CN117365329B (en) | 2024-07-02 |
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| CN114575762A (en) * | 2020-12-01 | 2022-06-03 | 中国石油化工股份有限公司 | Power rotating guide shoe for fixing well completion pipe column |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1331707A (en) * | 1971-04-29 | 1973-09-26 | Inst Burovoi Tekhnik | Turbodrill |
| RU2285103C1 (en) * | 2005-04-04 | 2006-10-10 | Михаил Валерьевич Шардаков | Turbodrill |
| CN202031534U (en) * | 2011-05-16 | 2011-11-09 | 王震 | Downhole rotational-flow shearing generator |
| RU170534U1 (en) * | 2017-01-10 | 2017-04-27 | Общество с ограниченной ответственностью "РОСТЭК Сервис" | Power driven shoe for casing or liner equipment |
| CN106703716A (en) * | 2017-01-12 | 2017-05-24 | 长江大学 | Hydraulic drive turbine type reaming guide shoe tool |
| CN108625786B (en) * | 2017-03-24 | 2020-07-10 | 中国石油化工股份有限公司 | Rotary reaming guide shoe and pipe string |
| CN110067524B (en) * | 2018-01-23 | 2024-12-20 | 中石化石油工程技术服务有限公司 | A casing segmented pushing and running tool |
| CN112227957B (en) * | 2020-09-15 | 2023-04-07 | 长江大学 | Self-drilling tool Adaptation turbine guide shoe instrument |
| CN114607291A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气集团有限公司 | Sleeve shoe |
| CN112483018A (en) * | 2020-12-10 | 2021-03-12 | 中国石油集团渤海钻探工程有限公司 | Double-acting sleeve rotating guide shoe |
| CN112523739B (en) * | 2020-12-28 | 2021-11-16 | 西南石油大学 | An underground hydraulically driven helical-cyclone coupled tubular separator |
| CN114412383B (en) * | 2022-01-24 | 2025-02-28 | 北京佰文恒新能源服务有限公司 | A casing guide shoe system driven by a large-diameter all-metal hollow screw drill |
| CN114439385A (en) * | 2022-02-16 | 2022-05-06 | 成都德维石油技术服务有限责任公司 | Power guide shoe |
| CN217582053U (en) * | 2022-05-06 | 2022-10-14 | 中石化石油工程技术服务有限公司 | Power guide shoe suitable for long horizontal well section |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114575762A (en) * | 2020-12-01 | 2022-06-03 | 中国石油化工股份有限公司 | Power rotating guide shoe for fixing well completion pipe column |
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