CN-122014132-A - Rotary jet flow blocking removing tool

CN122014132ACN 122014132 ACN122014132 ACN 122014132ACN-122014132-A

Abstract

The invention relates to the technical field of underground operation equipment, in particular to a rotary jet flow blocking removing tool which comprises a connecting cylinder, a guide shell, a sealing tube, a transmission shaft, a turbine, a rotary sealing assembly and a rotary shell, wherein the guide shell is fixedly arranged on the inner side of the upper part of the connecting cylinder. The invention has reasonable and compact structure, when in use, the upper end of the connecting cylinder is connected with the pipe string, high-pressure fluid is introduced into the pipe string, after impacting the turbine, the high-pressure fluid is forced to pass through the diversion hole on the diversion shell, and enters the annular flow passage formed between the inner wall of the connecting cylinder and the outer wall of the sealing pipe, the fluid flows in the annular flow passage and bypasses the sealing pipe, then the fluid is converged into the injection cavity of the rotary shell under the constraint of the rotary sealing assembly, and then is injected out from the first nozzle, the second nozzle and the third nozzle. The structure effectively solves the problems of easy blockage of the prior transmission shaft due to liquid inlet, short sealing life and insufficient rock breaking torque, and has the advantages of reliable sealing, large output torque and long service life.

Inventors

MU ZONGJIE
TAN YAWEN
HAN XIAORAN
LI GENSHENG
TIAN SHOUCENG
ZHANG PANPAN

Assignees

中国石油大学(北京)克拉玛依校区

Dates

Publication Date: 20260512
Application Date: 20260414

Claims (10)

1. The utility model provides a rotatory efflux deblocking instrument, a serial communication port, the steam generator comprises a connecting cylinder, the water conservancy diversion shell, the seal tube, the transmission shaft, the turbine, rotary seal subassembly and rotary housing, connecting cylinder upper portion inboard fixed mounting has the water conservancy diversion shell, the water conservancy diversion shell is big-end-up's funnel form, the water conservancy diversion shell outside is along circumference interval distribution has the water conservancy diversion hole of the inside and outside intercommunication of a plurality of, water conservancy diversion shell lower extreme central authorities and seal tube upper end fixed mounting together, seal tube internal seal rotates and installs the transmission shaft, transmission shaft upper end outside interval fixed mounting has a plurality of turbine about corresponding water conservancy diversion shell top position, transmission shaft lower extreme fixed mounting who corresponds seal tube below position has the connection pad, be equipped with rotary seal subassembly between connection pad upper end and the connecting cylinder lower extreme, connection pad outside fixed mounting has the rotary housing, rotary housing inboard is equipped with the injection chamber, connection pad upper end along circumference interval distribution has a plurality of and the overflow hole of injection chamber, the interval distribution has a plurality of first jet orifice of second jet orifice of the outside rotary housing lower part, a plurality of second jet orifice and a third jet orifice in every first jet orifice, install the third jet orifice in every second jet orifice.
2. The rotary jet flow blocking remover according to claim 1, wherein three turbines are fixedly arranged at upper and lower intervals on the outer side of the upper part of the transmission shaft, and each turbine comprises a plurality of blades fixedly arranged on the outer side of the transmission shaft at intervals along the circumference.
3. The rotary jet flow blocking remover according to claim 1 or 2, wherein the middle part of the sealing tube is outwards protruded to form a bearing cavity, and a plurality of bearings sleeved on the outer side of the transmission shaft are arranged on the inner side of the bearing cavity at intervals.
4. The rotary jet flow blocking remover according to claim 1 or 2, characterized in that the rotary seal assembly comprises a stationary ring, a thrust ring, a movable ring, a sealing ring, a compression ring and an elastic reset piece, wherein the inner side of the lower end of the connecting cylinder is fixedly provided with a connecting inner ring table, the stationary ring is fixedly arranged on the inner side of the connecting inner ring table, the thrust ring is sleeved on the inner side of the lower end of the stationary ring, the movable ring is arranged at the lower end of the thrust ring, the lower end of the movable ring is fixedly arranged together with the upper end of the connecting disc, a compression step surface is arranged on the inner side of the movable ring, the lower end of the thrust ring is provided with a mounting ring groove, the sealing ring and the compression ring are sequentially arranged in the mounting ring groove from top to bottom, and the elastic reset piece is arranged between the compression ring and the compression step surface.
5. The rotary jet flow blocking remover according to claim 3, wherein the rotary sealing assembly comprises a stationary ring, a thrust ring, a movable ring, a sealing ring, a compression ring and an elastic reset piece, wherein the inner side of the lower end of the connecting cylinder is fixedly provided with a connecting inner ring table, the inner side of the connecting inner ring table is fixedly provided with the stationary ring, the inner side of the lower end of the stationary ring is sleeved with the thrust ring, the lower end of the thrust ring is provided with the movable ring, the lower end of the movable ring is fixedly arranged with the upper end of the connecting disc, the inner side of the movable ring is provided with a compression step surface, the lower end of the thrust ring is provided with a mounting annular groove, the sealing ring and the compression ring are sequentially arranged in the mounting annular groove from top to bottom, and the elastic reset piece is arranged between the compression ring and the compression step surface.
6. The rotary jet flow blocking remover according to claim 4, wherein the elastic reset piece comprises a plurality of compression springs, a plurality of limiting grooves with upward openings are circumferentially distributed on the compression step surface at intervals, the compression springs with the upper ends fixedly connected with the lower sides of the compression rings are installed in each limiting groove, the sealing rings are sleeved in the installation ring grooves corresponding to the outer sides of the compression rings, and the lower ends of the sealing rings and the upper ends of the movable rings are fixedly installed together.
7. The rotary jet flow blocking remover according to claim 1, wherein the elastic reset piece comprises a plurality of compression springs, a plurality of limiting grooves with upward openings are circumferentially distributed on the compression step surface at intervals, the compression springs with the upper ends fixedly connected with the lower sides of the compression rings are installed in each limiting groove, the sealing rings are sleeved in the installation annular grooves corresponding to the outer sides of the compression rings, and the lower ends of the sealing rings and the upper ends of the movable rings are fixedly installed together.
8. The rotary jet flow blocking remover according to claim 1,2, 5, 6 or 7, wherein the lower end of the rotary shell protrudes outwards to form a spherical crown-shaped guide part, the second jet hole and the third jet hole are arranged at intervals on the outer side of the lower part of the guide part, and two first jet holes which are radially penetrated are distributed at intervals along the circumference on the outer side of the lower part of the rotary shell corresponding to the position above the guide part.
9. The rotary jet flow blocking remover according to claim 3, wherein the lower end of the rotary shell is protruded outwards to form a spherical crown-shaped guide part, the second injection hole and the third injection hole are arranged at intervals on the outer side of the lower part of the guide part, and two first injection holes which are penetrated in radial direction are distributed at intervals along the circumference on the outer side of the lower part of the rotary shell corresponding to the position above the guide part.
10. The rotary jet flow blocking remover according to claim 4, wherein the lower end of the rotary shell is protruded outwards to form a spherical crown-shaped guide part, the second injection hole and the third injection hole are arranged at intervals on the outer side of the lower part of the guide part, and two first injection holes which are penetrated in radial direction are distributed at intervals along the circumference on the outer side of the lower part of the rotary shell corresponding to the position above the guide part.

Description

Rotary jet flow blocking removing tool Technical Field The invention relates to the technical field of underground operation equipment, in particular to a rotary jet flow blocking removing tool. Background In the later stages of field development, well bore waxing, fouling and screen plugging are the primary causes of production degradation. The rotary jet tool matched with the continuous oil pipe is a main current blocking removing means. Existing rotary jetting tools typically employ high pressure fluid to drive an internal turbine, which in turn drives a nozzle to rotate. The Chinese patent document with the publication number of CN216429534U discloses a sectional type blocking remover for a horizontal well, which comprises a pipe column and an injection pipe sleeved outside the pipe column, wherein the injection pipe is provided with an injection hole which can be communicated with an inner cavity of the pipe column, an injection mechanism is arranged inside the pipe column and comprises a double-turbine mechanism, and the double-turbine mechanism comprises a rotating shaft, a front turbine and a rear turbine which are arranged on the rotating shaft. The chinese patent publication No. CN114837635B discloses a downhole double-turbine cavitation generating device, which includes an oil pipe, an O-ring, a sleeve, a housing, an upper turbine, a lower turbine, a nozzle inducer, and a nozzle cartridge; the upper turbine is positioned at the upper end of the shell and consists of an upper turbine inner ring, upper turbine blades and an upper turbine outer ring, the thickness of the upper turbine blades gradually increases from top to bottom, and the rotation direction of the upper turbine blades is left rotation; the lower turbine is arranged at the lower end of the shell and consists of a lower turbine inner ring, lower turbine blades, a lower turbine outer ring and threaded holes below the lower turbine inner ring, the thickness of the lower turbine blades is gradually thickened from top to bottom, the rotation direction of the lower turbine blades is right-handed, the nozzle deflector is arranged below the lower turbine, external threads are formed above the nozzle deflector and connected with the threaded holes below the inner ring of the lower turbine through threads, the wall surface of the nozzle deflector is uniformly distributed with 10-14 rows of conical through holes I along the circumferential direction, 4-6 conical through holes I of each row are uniformly distributed along the axial direction, the aperture of the conical through holes I is gradually reduced from inside to outside, the nozzle barrel is arranged below the nozzle deflector, internal threads are formed above the inner wall of the nozzle barrel and connected with the external threads of the shell, 12-16 rows of conical through holes II are uniformly distributed along the circumferential direction, the aperture of the conical through holes II is gradually reduced from inside to outside, and the maximum aperture of the conical through holes II is smaller than the maximum aperture of the conical through holes I. However, the prior art has the defects that the bearing is fast in sealing failure, high-pressure fluid often directly flows through or surrounds the bearing assembly in the traditional design, solid-phase particles (such as fracturing sand and stratum cuttings) in the fluid are easy to invade a bearing cavity, so that the bearing is blocked or damaged, the service life of a tool is seriously influenced, the dynamic sealing life is short, a high-pressure dynamic sealing structure between a rotating part and a static part is complex, end face abrasion or spring fatigue is easy to occur under the conditions of high rotating speed and flushing of sand-containing fluid, leakage is caused, hydraulic energy cannot be effectively transmitted to a nozzle, the jet efficiency is reduced, the tool failure is possibly caused, the torque output is insufficient, the existing single-stage turbine structure has limitation on the energy conversion efficiency, and the tool is often blocked and cutting operation cannot be finished due to insufficient output torque when high-hardness plugs (such as hard scaling and cement plugs) are processed. Disclosure of Invention The invention provides a rotary jet flow blocking remover, which overcomes the defects of the prior art and can effectively solve the problems of unreliable sealing and insufficient torque of the prior blocking remover. The technical scheme is that the rotary jet flow blocking removing tool comprises a connecting cylinder, a flow guiding shell, a sealing tube, a transmission shaft, turbines, a rotary sealing assembly and a rotary shell, wherein the inner side of the upper part of the connecting cylinder is fixedly provided with the flow guiding shell, the flow guiding shell is in a funnel shape with a large upper part and a small lower part, the outer side of the flow guiding shell is c