阅读说明：本技术 一种高压管柱密封循环伴热防蜡装置及实施工艺 (High-pressure pipe column sealing circulating heat tracing wax-proof device and implementation process ) 是由 王今腾 于 2021-03-17 设计创作，主要内容包括：本发明公开了一种高压管柱密封循环伴热防蜡装置及实施工艺,包括油管(1)、套管(2)、芯管(3)、密封采液转接头(4)、密封衬套接头(13)、投球封隔器(14)、柱塞(31)和热水循环系统(5),通过将油管(1)、套管(2)和芯管(3)进行三层嵌套,利用密封衬套接头(13)和柱塞(31)之间的密封,以及投球封隔器(14)对井底高压的密封隔绝,使油管(1)和套管(2)之间、油管(1)和芯管(3)之间分别实现环空,使油气采出液通过芯管(3)流到地面,而循环热水则通过独立管路进行循环；本发明具有制作成本低、结构简单、实施工艺方便、对芯管加热速度快、节能环保等优点。(The invention discloses a high-pressure pipe column sealing circulation heat tracing paraffin control device and an implementation process, wherein the high-pressure pipe column sealing circulation heat tracing paraffin control device comprises an oil pipe (1), a sleeve (2), a core pipe (3), a sealing liquid production adapter (4), a sealing bush joint (13), a ball throwing packer (14), a plunger (31) and a hot water circulation system (5), wherein the oil pipe (1), the sleeve (2) and the core pipe (3) are nested in three layers, the annular space is respectively realized between the oil pipe (1) and the sleeve (2) and between the oil pipe (1) and the core pipe (3) by utilizing the sealing between the sealing bush joint (13) and the plunger (31) and the sealing isolation of the ball throwing packer (14) to the high pressure at the bottom of a well, the produced oil gas liquid flows to the ground through the core pipe (3), and the circulating hot; the invention has the advantages of low manufacturing cost, simple structure, convenient implementation process, high heating speed of the core pipe, energy saving, environmental protection and the like.)

1. A high-pressure pipe column sealing circulation heat tracing paraffin control device is characterized by comprising an oil pipe (1), a sleeve (2), a core pipe (3), a sealing liquid production adapter (4), a sealing bush adapter (13), a ball throwing packer (14), a plunger (31) and a hot water circulation system (5);

the inner diameter of the casing (2) is larger than the outer diameter of the oil pipe (1), the outer diameter of the core pipe (3) is smaller than the inner diameter of the oil pipe (1), the oil pipe (1) is arranged in the casing (2), and the core pipe (3) is arranged in the oil pipe (1);

a sleeve plugging ring (21) is fixedly arranged at the upper end of the sleeve (2), the inner edge of the sleeve plugging ring is fixedly connected with the outer wall of the oil pipe (1), and a sleeve branch pipe orifice (22) is arranged below the sleeve plugging ring (21) on the pipe body of the sleeve (2);

an oil pipe plugging ring (11) is fixedly arranged at the upper end of the oil pipe (1), the diameter of a central hole of the oil pipe plugging ring is larger than the outer diameter of the core pipe (3), a connecting threaded hole is formed in the oil pipe plugging ring (11), an oil pipe branch pipe orifice (12) is arranged below the oil pipe plugging ring (11) on the pipe body of the oil pipe (1), and the lower end of the oil pipe (1) is fixedly connected with the upper end orifice of the sealing bush joint (13);

the sealing bush joint (13) is in a circular tube shape, the inner diameter of the upper port of the sealing bush joint is larger than the outer diameter of the oil pipe (1), a bush annular protruding section (131) is arranged in the middle of the inner wall of the sealing bush joint (13), a plurality of circulation holes (132) are uniformly formed in the pipe wall of the bush joint above the bush annular protruding section (131) along the circumference of the pipe, and the lower end of the sealing bush joint (13) is fixedly connected with the upper port of the ball throwing packer (14);

the ball throwing packer (14) consists of a packing pipe (141), a sealing ring (142) and a soluble ball throwing (143), the inner diameter of the upper port of the packing pipe (141) is larger than the outer diameter of the lower port of the sealing bush joint (13), the packing pipe (141) is in a circular pipe shape, the middle lower part of the inner wall of the packing pipe is provided with a packing pipe annular protruding section (1411), the sealing ring (142) is in a circular ring shape, the outer diameter of the sealing ring (142) is smaller than the inner diameter of the sleeve (2), the inner diameter of the sealing ring (141) is larger than the outer diameter of the packing pipe (141), the sealing ring (142) is fixedly sleeved on the outer wall of the packing pipe (141) at the packing pipe annular protruding section (1411), and the diameter of the soluble ball throwing (143) is smaller than the inner diameter of the packing pipe (141);

the sealed liquid production adapter (4) is composed of two sections of pipe bodies which are perpendicular to each other, the upper end of the sealed liquid production adapter is an upper flange end (41), the lower end of the sealed liquid production adapter is a lower flange end (42), a coaxial limiting ring (43) extends out of the pipe body of the sealed liquid production adapter (4) on the end face of the lower flange end (42), the inner diameter of the limiting ring (43) is larger than the outer diameter of the core pipe (3), the outer diameter of the limiting ring is smaller than the diameter of the central hole of the oil pipe plugging ring (11), the upper flange end (41) of the sealed liquid production adapter (4) is fixedly connected with the produced liquid control valve (6), the latter is connected with an oil gas liquid production pipeline on the ground, and the lower flange end (42) of the sealed liquid production adapter (4) is fixedly connected with the upper end opening of;

the plunger (31) is in a hollow shuttle shape, the upper end opening of the plunger is fixedly connected with the lower end of the core pipe (3), the inner diameter of the upper end opening is larger than the outer diameter of the core pipe (3), and the outer diameter of the middle section of the plunger (31) is smaller than the inner diameters of the core pipe (3) and the sealing bush joint (13) and is larger than the inner diameter of the annular protruding section (131) of the bush;

the water inlet end of the hot water circulating system (5) is fixedly connected with the oil pipe branch pipe orifice (12), and the water outlet end of the hot water circulating system is fixedly connected with the sleeve pipe branch pipe orifice (22).

2. The high-pressure pipe column sealing cycle heat tracing wax prevention device according to claim 1, wherein: the hot water circulating system (5) is composed of a circulating water pipeline (51), a circulating water pump (52), a circulating water control valve (53) and a solar heater (54), wherein the water inlet end of the circulating water pipeline (51) is fixedly connected with the oil pipe branch pipe orifice (12), the water outlet end of the circulating water pipeline (51) is fixedly connected with the sleeve pipe branch pipe orifice (22), the circulating water pump (52) is arranged at the water outlet end of the circulating water pipeline (51), the circulating water control valve (53) is arranged between the sleeve pipe branch pipe orifice (22) and the circulating water pump (52), and the solar heater (54) is arranged between the circulating water pump (52) and the water inlet end of the circulating water pipeline (51).

3. The high-pressure pipe column sealing cycle heat tracing wax prevention device according to claim 1, wherein: the upper port of the sealing bush joint (13) is provided with a bush inner shaft space (133), the upper port of the packer (14) packing tube (141) is provided with a packing tube inner shaft space (1412), the port of the lower flange end (42) of the sealing liquid-producing adapter (4) is provided with an adapter inner shaft space (44), and the upper port of the plunger (31) is provided with a plunger inner shaft space (311).

4. The high-pressure pipe column sealing cycle heat tracing wax prevention device according to claim 1, wherein: and the sealing ring (142) of the ball throwing packer (14) is integrally connected with the outer wall of the packing pipe (141).

5. The high-pressure pipe column sealing cycle heat tracing wax prevention device according to claim 1, wherein: the sealing bush joint (13), the plunger (31), the packer pipe (141) of the ball throwing packer (14) and the sealing ring (142) are all made of elastic metal materials.

6. The high-pressure pipe column sealing cycle heat tracing wax prevention device according to claim 1, wherein: the outer wall of the middle section of the plunger (31) is uniformly provided with a plurality of groups of grooves along the circumference of the tube, the grooves are provided with balls (312), and the diameter of the outer opening of each groove is smaller than that of each ball (312).

7. The implementation process of the high-pressure pipe column sealing cycle heat tracing wax-proof device according to any one of claims 1 to 6, wherein: the method comprises the following steps:

(a) the lower end of the oil pipe (1) is sequentially and fixedly connected with a sealing bush joint (13) and a ball throwing packer (14), the oil pipe (1) is put into the casing pipe (2), a casing pipe plugging ring (21) is fixedly connected with the outer wall of the oil pipe (1), the water inlet end of the hot water circulating system (5) is fixedly connected with an oil pipe branch pipe orifice (12), and the water outlet end of the hot water circulating system is fixedly connected with a casing pipe branch pipe orifice (22);

(b) fixedly connecting the upper end of the core pipe (3) with a lower flange end (42) of the sealed liquid production adapter (4), fixedly connecting the lower end of the core pipe with the plunger (31), lowering the core pipe (3) into the oil pipe (1) to enable the plunger (31) to be lowered to a sealing bush joint (13), and fixedly connecting an upper flange end (41) of the sealed liquid production adapter (4) with the liquid production control valve (6);

(c) connecting a lower flange end (42) of the sealed liquid production adapter (4) to an oil pipe plugging ring (11), pressing down the core pipe (3) to seal the plunger (31) and the sealing bush joint (13), and fixedly connecting the lower flange end (42) with the oil pipe plugging ring (11);

(d) inflating and pressurizing in the core pipe (3), pushing a soluble ball (143) of a ball throwing packer (14) to move downwards, and extruding an annular protruding section (1411) and a sealing ring (142) of a packing pipe to seal and encircle the oil pipe (1) and the sleeve (2), and meanwhile, annularly enclosing the oil pipe (1) and the core pipe (3);

(e) opening a circulating water control valve (53) and a circulating water pump (52) of the hot water circulating system (5), enabling circulating hot water to flow in from an oil pipe branch pipe orifice (12), sequentially pass through an annular channel between the core pipe (3) and the oil pipe (1), a circulating hole in the sealing bush joint (13), an annular channel between the oil pipe (1) and the sleeve pipe (2) and a sleeve pipe branch pipe orifice (22), forming hot water circulation (8), and heating the core pipe (3);

(f) the high-pressure oil gas produced liquid (7) flows upwards, the soluble throwing balls (143) are dissolved and flow out of the core pipe (3), and the oil gas produced liquid flows to an oil gas produced liquid pipeline on the ground through the sealed liquid production adapter (4) to carry out long-term stable production.

Technical Field

The invention relates to a petroleum underground oil extraction wax-proofing device and an implementation process thereof, in particular to a high-pressure pipe column sealing circulation heat tracing wax-proofing device and an implementation process thereof.

Background

When a high-pressure wax-containing oil well is produced, in the process of pumping oil gas of the wax-containing oil well out of the ground, the temperature of crude oil is reduced due to the reduction of pressure, so that wax dissolved in the crude oil is separated out and adhered to a production pipe column, a channel of the pipe column is narrowed and blocked, and the high-wax-containing high-pressure oil well cannot normally produce.

The present method for removing wax and preventing wax of tubular column used in petroleum exploitation mainly includes mechanical wax removal, chemical agent wax removal and prevention, microbe wax removal and prevention, electromagnetic wax removal and prevention, thermal wax removal and prevention, etc. The mechanical paraffin removal method is characterized in that a tool string containing a paraffin removal scraper is placed on the inner side of a production string, when the production string is blocked, the paraffin removal scraper removes the paraffin in the production string in a mechanical movement mode, and the method has the defects that the paraffin removal is not thorough and the string is easily damaged; the chemical agent and the microbial wax removal and prevention are injected from the annular area of the pipe column sleeve, and have the advantages that the production operation of an oil well is not influenced, but the wax removal and prevention action time of single injection is limited, the chemical agent or the microbial agent needs to be thrown in periodically, and the cost is higher; the electromagnetic wax removal and prevention method has the advantages that the electromagnetic coil is arranged on the periphery of the pipe column sleeve, the pipe column is heated by electromagnetic heating, the method is complex in structure and complex in operation, meanwhile, the operation cost is increased, strong electricity is involved, electric sparks are possibly generated, and great production hidden dangers are brought.

Disclosure of Invention

The invention aims to provide a high-pressure pipe column sealing circulation heat tracing wax-proofing device and an implementation process thereof aiming at the defects in the prior art.

The high-pressure pipe column sealing circulation heat tracing wax-proof device is realized by the following technical scheme:

a high-pressure pipe column sealing circulation heat tracing paraffin control device comprises an oil pipe, a sleeve, a core pipe, a sealing liquid production adapter, a sealing bush adapter, a ball throwing packer, a plunger and a hot water circulation system;

the inner diameter of the sleeve is larger than the outer diameter of the oil pipe, the outer diameter of the core pipe is smaller than the inner diameter of the oil pipe, the oil pipe is arranged in the sleeve, and the core pipe is arranged in the oil pipe;

the upper end of the sleeve is fixedly provided with a sleeve plugging ring, the inner edge of the sleeve plugging ring is fixedly connected with the outer wall of the oil pipe, and a sleeve branch pipe orifice is arranged below the sleeve plugging ring on the sleeve pipe body;

an oil pipe plugging ring is fixedly arranged at the upper end of the oil pipe, the diameter of a central hole of the oil pipe is larger than the outer diameter of the core pipe, a connecting threaded hole is formed in the oil pipe plugging ring, an oil pipe branch pipe orifice is arranged below the oil pipe plugging ring on the oil pipe body, and the lower end of the oil pipe is fixedly connected with the upper port of the sealing bush joint;

the sealing bush joint is in a circular tube shape, the inner diameter of the upper port of the sealing bush joint is larger than the outer diameter of the oil pipe, a bush annular protruding section is arranged in the middle of the inner wall of the sealing bush joint, a plurality of circulation holes are uniformly formed in the pipe wall of the bush joint above the bush annular protruding section along the circumference of the pipe, and the lower end of the sealing bush joint is fixedly connected with the upper port of the pitching packer;

the ball throwing packer consists of an isolation pipe, a sealing ring and a soluble ball throwing, wherein the inner diameter of the upper port of the ball throwing packer is larger than the outer diameter of the lower port of the sealing bush joint, the isolation pipe is in a circular pipe shape, the middle lower part of the inner wall of the isolation pipe is provided with an annular protruding section of the isolation pipe, the sealing ring is in a circular ring shape, the outer diameter of the sealing ring is smaller than the inner diameter of the sleeve, the inner diameter of the sealing ring is larger than the outer diameter of the isolation pipe, the sealing ring is fixedly sleeved on the outer wall of the isolation pipe at the annular protruding section of the isolation pipe, and the diameter of the soluble ball throwing is smaller than the;

the sealed liquid production adapter is composed of two sections of pipe bodies which are vertical to each other, the upper end of the sealed liquid production adapter is an upper flange end, the lower end of the sealed liquid production adapter is a lower flange end, a coaxial limiting ring extends out of the pipe body of the sealed liquid production adapter on the end face of the lower flange end, the inner diameter of the limiting ring is larger than the outer diameter of the core pipe, the outer diameter of the limiting ring is smaller than the diameter of the central hole of the oil pipe plugging ring, the upper flange end of the sealed liquid production adapter is fixedly connected with a produced liquid control valve, the latter is connected with an oil gas produced liquid pipeline on the ground, and the lower flange end of the sealed liquid production adapter is fixedly connected with;

the plunger is in a hollow shuttle shape, the upper end opening of the plunger is fixedly connected with the lower end of the core pipe, the inner diameter of the upper end opening is larger than the outer diameter of the core pipe, and the outer diameter of the middle section of the plunger is smaller than the inner diameters of the core pipe and the joint of the sealing bush and is larger than the inner diameter of the annular protruding section of the bush;

and the water inlet end of the hot water circulating system is fixedly connected with the branch pipe port of the oil pipe, and the water outlet end of the hot water circulating system is fixedly connected with the branch pipe port of the sleeve.

As a further optimization of the technical scheme of the invention, the hot water circulating system is composed of a circulating water pipeline, a circulating water pump, a circulating water control valve and a solar heater, wherein the water inlet end of the circulating water pipeline is fixedly connected with the branch pipe port of the oil pipe, the water outlet end of the circulating water pipeline is fixedly connected with the branch pipe port of the sleeve pipe, the circulating water pump is arranged at the water outlet end of the circulating water pipeline, the circulating water control valve is arranged between the branch pipe port of the sleeve pipe and the circulating water pump, and the solar heater is arranged between the circulating water pump and the water inlet end of the circulating water.

As a further optimization of the technical scheme of the invention, the upper port of the sealing bush joint is provided with an inner shaft space of the bush, the upper port of the packer packing tube of the pitching packer is provided with an inner shaft space of the packing tube, the port of the lower flange end of the sealed liquid-collecting adapter is provided with an inner shaft space of the adapter, and the upper port of the plunger is provided with an inner shaft space of the plunger, so that the connection between the components is limited.

As a further optimization of the technical scheme of the invention, the sealing ring of the ball throwing packer is integrally connected with the outer wall of the packer pipe.

As a further optimization of the technical scheme of the invention, the sealing bush joint, the plunger piston and the packer tube and the sealing ring of the pitching packer are all made of elastic metal materials, such as nickel-chromium steel or rolled manganese bronze and the like.

As a further optimization of the technical scheme of the invention, a plurality of groups of grooves are uniformly arranged on the outer wall of the middle section of the plunger along the circumference of the pipe, the grooves are filled with balls, and the diameter of the outer opening of each groove is smaller than that of each ball, so that the friction is reduced when the joint of the plunger and the sealing bush is disassembled.

The invention relates to an implementation process of a high-pressure pipe column sealing circulation heat tracing wax-proof device, which adopts the technical scheme that the implementation process comprises the following steps:

(a) the lower end of the oil pipe is fixedly connected with a sealing bush joint and a ball throwing packer in sequence, the oil pipe is put into the sleeve, a sleeve blocking ring is fixedly connected with the outer wall of the oil pipe, the water inlet end of the hot water circulating system is fixedly connected with an oil pipe branch pipe orifice, and the water outlet end of the hot water circulating system is fixedly connected with the sleeve branch pipe orifice;

(b) fixedly connecting the upper end of the core pipe with the lower flange of the sealed liquid production adapter, fixedly connecting the lower end of the core pipe with the plunger, putting the core pipe into an oil pipe to enable the plunger to be put down to the joint of the sealing bush, and fixedly connecting the upper flange of the sealed liquid production adapter with the liquid production control valve;

(c) connecting the lower flange end of the sealed liquid production adapter to the oil pipe plugging ring, pressing the core pipe downwards to seal the joint of the plunger and the sealing bush, and fixedly connecting the lower flange end with the oil pipe plugging ring;

(d) inflating and pressurizing the core pipe, pushing the soluble ball throwing of the ball throwing packer to move downwards, and extruding the annular protruding section and the sealing ring of the packing pipe to seal the oil pipe and the sleeve pipe into an annular space, and meanwhile, enclosing the oil pipe and the core pipe into the annular space;

(e) opening a circulating water control valve and a circulating water pump of the hot water circulating system, enabling circulating hot water to flow in from a branch pipe opening of an oil pipe, sequentially passing through an annular channel between a core pipe and the oil pipe, a circulating hole in a sealing bush joint, an annular channel between the oil pipe and a sleeve pipe and a branch pipe opening of the sleeve pipe, forming hot water circulation, and heating the core pipe;

(f) the high-pressure oil gas produced liquid flows upwards, the soluble shot is dissolved and flows out of the core pipe, and the oil gas produced liquid flows to an oil gas produced liquid pipeline on the ground through the sealed liquid production adapter to carry out long-term stable production.

In summary, the present invention has the following technical advantages over the prior art: the high-pressure pipe column sealing circulation heat tracing paraffin prevention device and the implementation process have the advantages that the oil pipe, the sleeve and the core pipe are nested in three layers, the sealing between the sealing bush joint and the plunger piston is utilized, and the ball throwing packer is used for sealing and isolating high pressure at the well bottom, so that annular spaces are respectively formed between the oil pipe and the sleeve pipe and between the oil pipe and the core pipe, oil gas produced liquid flows to the ground through the core pipe, circulating hot water circulates through an independent pipeline, and then the circulating hot water is heated by the solar heater on the ground.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of a high-pressure pipe column sealing circulation heat tracing wax-proofing device of the present invention;

FIG. 2 is a cross-sectional view of the construction of a seal bushing joint in an embodiment of the present invention;

FIG. 3 is a structural cross-sectional view of a ball throwing packer in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of the structure of the plunger in an embodiment of the present invention;

figure 5 is a cross-sectional view of the sealed fluid production adapter of an embodiment of the present invention;

FIG. 6 is a schematic view of a core tube placed in an oil pipe according to an embodiment of the present invention;

FIG. 7 is a schematic view of a production cycle in an embodiment of the present invention;

in the figure: 1-oil pipe, 2-sleeve pipe, 3-core pipe, 4-sealed liquid production adapter, 5-hot water circulating system, 6-produced liquid control valve, 7-oil gas produced liquid, 8-hot circulating water, 11-oil pipe plugging ring, 12-oil pipe branch pipe orifice, 13-sealed bush joint, 14-ball throwing packer, 21-sleeve pipe plugging ring, 22-sleeve pipe branch pipe orifice, 31-plunger, 41-upper flange end, 42-lower flange end, 43-limiting ring, 44-adapter inner shaft space, 51-circulating water pipeline, 52-circulating water pump, 53-circulating water control valve, 54-solar heater, 131-sleeve ring-shaped protruding section, 132-circulating hole, 133-inner shaft space of sleeve, 141-sealed pipe, 141-isolated pipe, 142-sealing ring, 143-soluble ball, 311-sealing ring, 311-plunger inner shaft, 312-ball, 1411-packer tube annular protruding section and 1412-packer tube inner shaft.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1-7 show the high-pressure pipe column sealing circulation heat tracing wax-proof device and the implementation process of the invention.

As shown in fig. 1-5, a high-pressure pipe column sealing circulation heat tracing paraffin control device comprises an oil pipe 1, a casing 2, a core pipe 3, a sealing liquid production adapter 4, a sealing bush adapter 13, a pitching packer 14, a plunger 31 and a hot water circulation system 5;

the inner diameter of the sleeve 2 is larger than the outer diameter of the oil pipe 1, the outer diameter of the core pipe 3 is smaller than the inner diameter of the oil pipe 1, the oil pipe 1 is arranged in the sleeve 2, and the core pipe 3 is arranged in the oil pipe 1;

a sleeve plugging ring 21 is fixedly arranged at the upper end of the sleeve 2, the inner edge of the sleeve plugging ring is fixedly connected with the outer wall of the oil pipe 1, and a sleeve branch pipe orifice 22 is arranged below the sleeve plugging ring 21 on the pipe body of the sleeve 2;

an oil pipe plugging ring 11 is fixedly arranged at the upper end of the oil pipe 1, the diameter of a central hole of the oil pipe plugging ring 11 is larger than the outer diameter of the core pipe 3, a connecting threaded hole is formed in the oil pipe plugging ring 11, an oil pipe branch pipe orifice 12 is arranged below the oil pipe plugging ring 11 on the pipe body of the oil pipe 1, and the lower end of the oil pipe 1 is fixedly connected with an upper end orifice of the sealing bush joint 13;

the sealing bush joint 13 is in a circular tube shape, the inner diameter of the upper port of the sealing bush joint is larger than the outer diameter of the oil pipe 1, a bush annular protruding section 131 is arranged in the middle of the inner wall of the sealing bush joint 13, eight circulation holes 132 are uniformly formed in the pipe wall of the bush joint above the bush annular protruding section 131 along the circumference of the pipe, and the lower end of the sealing bush joint 13 is fixedly connected with the upper port of the ball throwing packer 14;

the ball throwing packer 14 comprises an isolation pipe 141, a sealing ring 142 and a soluble ball throwing 143, wherein the inner diameter of the upper port of the ball throwing packer is larger than the outer diameter of the lower port of the sealing bush joint 13, the isolation pipe 141 is in a circular pipe shape, the middle lower part of the inner wall of the isolation pipe is provided with an annular protruding section 1411 of the isolation pipe, the sealing ring 142 is in a circular ring shape, the outer diameter of the sealing ring is smaller than the inner diameter of the sleeve 2, the inner diameter of the sealing ring is larger than the outer diameter of the isolation pipe 141, the sealing ring 142 is fixedly sleeved on the outer wall of the isolation pipe 141 at the annular protruding section 1411 of the isolation pipe, and the diameter of the soluble ball throwing 143 is smaller than the inner diameter of the isolation;

the sealed liquid production adapter 4 is composed of two sections of pipe bodies which are perpendicular to each other, the upper end of the sealed liquid production adapter 4 is an upper flange end 41, the lower end of the sealed liquid production adapter 4 is a lower flange end 42, a coaxial limiting ring 43 extends out of the pipe body of the sealed liquid production adapter 4 on the end face of the lower flange end 42, the inner diameter of the limiting ring 43 is larger than the outer diameter of the core pipe 3, the outer diameter of the limiting ring is smaller than the diameter of the central hole of the oil pipe plugging ring 11, the upper flange end 41 of the sealed liquid production adapter 4 is fixedly connected with the produced liquid control valve 6, the latter is connected with an oil gas produced liquid pipeline on the ground, and the lower flange end 42 of the sealed liquid production adapter 4 is fixedly;

the plunger 31 is in a hollow shuttle shape, the upper port of the plunger 31 is fixedly connected with the lower end of the core tube 3, the inner diameter of the upper port is larger than the outer diameter of the core tube 3, and the outer diameter of the middle section of the plunger 31 is smaller than the inner diameters of the core tube 3 and the sealing bush joint 13 and is larger than the inner diameter of the annular protruding section 131 of the bush;

the water inlet end of the hot water circulating system 5 is fixedly connected with the oil pipe branch pipe orifice 12, and the water outlet end is fixedly connected with the sleeve pipe branch pipe orifice 22.

In this embodiment, the hot water circulating system 5 comprises a circulating water pipeline 51, a circulating water pump 52, a circulating water control valve 53 and a solar heater 54, wherein the water inlet end of the circulating water pipeline 51 is fixedly connected with the oil pipe branch pipe orifice 12, the water outlet end of the circulating water pipeline 51 is fixedly connected with the sleeve pipe branch pipe orifice 22, the circulating water pump 52 is arranged at the water outlet end of the circulating water pipeline 51, the circulating water control valve 53 is arranged between the sleeve pipe branch pipe orifice 22 and the circulating water pump 52, and the solar heater 54 is arranged between the circulating water pump 52 and the water inlet end of the circulating water pipeline 51.

In this embodiment, a liner inner space 133 is provided at an upper port of the seal liner joint 13, a packer inner space 1412 is provided at an upper port of the packer tube 141 of the ball injector packer 14, a joint inner space 44 is provided at a port of the lower flange end 42 of the seal production joint 4, and a plunger inner space 311 is provided at an upper port of the plunger 31.

In this embodiment, the sealing ring 142 of the ball injector packer 14 is integrally connected to the outer wall of the packer tube 141.

In this embodiment, the seal bush joint 13, the plunger 31, the packing tube 141 of the ball injector packer 14 and the seal ring 142 are all made of rolled manganese bronze material.

In this embodiment, six sets of grooves are uniformly arranged on the outer wall of the middle section of the plunger 31 along the circumference of the tube, the grooves are provided with balls 312, and the diameter of the outer opening of each groove is smaller than that of the ball 312.

As shown in fig. 6-7, an implementation process of a high-pressure pipe column sealing circulation heat tracing wax-proof device comprises the following steps:

(a) the lower end of the oil pipe 1 is sequentially and fixedly connected with a sealing bush joint 13 and a ball throwing packer 14, the oil pipe 1 is put into the casing 2, a casing plugging ring 21 is fixedly connected with the outer wall of the oil pipe 1, the water inlet end of the hot water circulating system 5 is fixedly connected with an oil pipe branch pipe orifice 12, and the water outlet end of the hot water circulating system is fixedly connected with a casing branch pipe orifice 22;

(b) fixedly connecting the upper end of the core pipe 3 with the lower flange end 42 of the sealed liquid production adapter 4, fixedly connecting the lower end of the core pipe with the plunger 31, lowering the core pipe 3 into the oil pipe 1 to lower the plunger 31 to the position of the sealing bush joint 13, and fixedly connecting the upper flange end 41 of the sealed liquid production adapter 4 with the produced liquid control valve 6;

(c) connecting a lower flange end 42 of the sealed liquid production adapter 4 to the oil pipe plugging ring 11, pressing down the core pipe 3 to seal the plunger 31 and the sealing bush joint 13, and fixedly connecting the lower flange end 42 with the oil pipe plugging ring 11;

(d) inflating and pressurizing the core pipe 3, pushing the soluble ball 143 of the ball throwing packer 14 to descend, and extruding the annular protruding section 1411 and the sealing ring 142 of the packing pipe to seal and encircle the oil pipe 1 and the sleeve 2, and meanwhile, the oil pipe 1 and the core pipe 3;

(e) opening a circulating water control valve 53 and a circulating water pump 52 of the hot water circulating system 5, enabling circulating hot water to flow in from the branch pipe orifice 12 of the oil pipe, sequentially passing through an annular channel between the core pipe 3 and the oil pipe 1, a circulating hole on the sealing bush joint 13, an annular channel between the oil pipe 1 and the sleeve 2 and the branch pipe orifice 22 of the sleeve to form hot water circulation 8, and heating the core pipe 3;

(f) the high-pressure oil gas produced liquid 7 flows upwards, dissolves the soluble shot 143, flows out of the core pipe 3, flows to an oil gas produced liquid pipeline on the ground through the sealed liquid production adapter 4, and is stably produced for a long time.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "upper", "lower", "one side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Also, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and thus, for example, "connected" may be fixedly, detachably, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made by those skilled in the art without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.