CN112727399B - High-pressure pipe column sealing circulation heat tracing wax-preventing device and implementation process - Google Patents
High-pressure pipe column sealing circulation heat tracing wax-preventing device and implementation process Download PDFInfo
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- CN112727399B CN112727399B CN202110288028.XA CN202110288028A CN112727399B CN 112727399 B CN112727399 B CN 112727399B CN 202110288028 A CN202110288028 A CN 202110288028A CN 112727399 B CN112727399 B CN 112727399B
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- 238000007789 sealing Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000007788 liquid Substances 0.000 claims abstract description 56
- 238000004519 manufacturing process Methods 0.000 claims abstract description 34
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 238000012856 packing Methods 0.000 claims description 45
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 75
- 239000012188 paraffin wax Substances 0.000 description 15
- 230000002265 prevention Effects 0.000 description 8
- 239000001993 wax Substances 0.000 description 7
- 238000005457 optimization Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/006—Combined heating and pumping means
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a high-pressure pipe column sealing circulation heat tracing wax-proofing device and an implementation process, wherein the device comprises an oil pipe (1), a sleeve (2), a core pipe (3), a sealing liquid extraction adapter (4), a sealing bushing 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 subjected to three-layer nesting, and sealing between the sealing bushing joint (13) and the plunger (31) and sealing between the ball throwing packer (14) and high-pressure at the bottom of a well are utilized to isolate the sealing of the high pressure at the bottom of the well, so that annular spaces are respectively realized between the oil pipe (1) and the sleeve (2) and between the oil pipe (1) and the core pipe (3), oil gas extraction liquid flows to the ground through the core pipe (3), and circulating hot water circulates through independent pipelines; the invention has the advantages of low manufacturing cost, simple structure, convenient implementation process, high heating speed of the core tube, energy conservation, environmental protection and the like.
Description
Technical Field
The invention relates to a petroleum underground oil extraction paraffin control device and an implementation process, in particular to a high-pressure pipe column sealing circulation heat tracing paraffin control device and an implementation process.
Background
When the high-pressure wax-containing oil well is produced, the temperature of crude oil is reduced due to the reduction of pressure in the process of pumping out the ground, so that the wax dissolved in the crude oil is separated out and adhered to a production pipe column, the channel of the pipe column is narrowed and blocked, and the high-wax-containing high-pressure oil and gas well cannot be produced normally.
The current pipe column paraffin removal and prevention method used in petroleum exploitation mainly comprises mechanical paraffin removal, chemical paraffin removal and prevention, microbial paraffin removal and prevention, electromagnetic paraffin removal and prevention, thermal paraffin removal and prevention and the like. The mechanical paraffin removal is to put down a tool string containing a paraffin removal scraper blade on the inner side of the production pipe column, and when the production pipe column is blocked, the paraffin removal scraper blade can remove the paraffin in the production pipe column in a mechanical movement mode; the chemical agent and the microbial paraffin removal and prevention agent are injected from the annular area of the tubular column sleeve, and have the advantages that the production operation of an oil well is not affected, but the paraffin removal and prevention effect time of single injection is limited, the chemical agent or the microbial agent needs to be injected regularly, and the cost is high; the electromagnetic paraffin removal and prevention method has the defects that the structure is complex, the operation cost is increased, strong electricity is involved, electric sparks can be generated, and great production hidden danger is brought.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a high-pressure pipe column sealing circulation heat tracing wax-preventing device and an implementation process, wherein an oil pipe, a sleeve and a core pipe are adopted, the three layers of sleeve are used, the sealing assembly with a simple structure is used for sealing the pipes to form independent channels of oil gas produced liquid and circulating hot water, a solar heater on the ground is used for heating the circulating hot water, the temperature of the core pipe column is higher than the temperature of wax precipitation of wax-containing gas, and the long-term stable production of a high-wax-content high-pressure gas well is ensured.
The invention discloses a high-pressure pipe column sealing circulation heat tracing wax-preventing device, which is realized by the following technical scheme:
a high-pressure pipe column sealing circulation heat tracing wax-preventing device comprises an oil pipe, a sleeve, a core pipe, a sealing liquid extraction adapter, a sealing bush joint, a ball injection 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 formed 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 bushing joint is in a circular tube shape, the inner diameter of the upper port of the sealing bushing joint is larger than the outer diameter of the oil pipe, a bushing annular protruding section is arranged in the middle of the inner wall of the sealing bushing joint, a plurality of circulating holes are uniformly formed in the wall of the bushing joint above the bushing annular protruding section along the periphery of the pipe, and the lower end of the sealing bushing joint is fixedly connected with the upper port of the ball throwing packer;
The ball throwing packer consists of a packing tube, a sealing ring and a soluble ball throwing device, wherein the inner diameter of the upper port of the packing tube is larger than the outer diameter of the lower port of the sealing bush joint, the packing tube is round, a packing tube annular protruding section is arranged at the middle lower part of the inner wall of the packing tube, the sealing ring is round, 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 packing tube, the sealing ring is fixedly sleeved on the outer wall of the packing tube at the packing tube annular protruding section, and the soluble ball throwing diameter is smaller than the inner diameter of the packing tube and larger than the inner diameter of the packing tube annular protruding section;
The sealing liquid production adapter consists of two sections of pipe bodies which are mutually perpendicular, wherein the upper end of the sealing liquid production adapter is an upper flange end, the lower end of the sealing liquid production adapter is a lower flange end, a coaxial limiting ring extends out of the pipe body of the sealing 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 a central hole of the oil pipe plugging ring, the upper flange end of the sealing liquid production adapter is fixedly connected with a produced liquid control valve, the upper flange end of the sealing liquid production adapter is connected with an oil gas produced liquid pipeline on the ground, and the lower flange end of the sealing liquid production adapter is fixedly connected with the upper port of the core pipe;
The plunger is in a hollow shuttle shape, the upper port of the plunger is fixedly connected with the lower end of the core tube, the inner diameter of the upper port is larger than the outer diameter of the core tube, the outer diameter of the middle section of the plunger is smaller than the inner diameter of the core tube and the sealing bushing joint and larger than the inner diameter of the annular protruding section of the bushing;
the water inlet end of the hot water circulating system is fixedly connected with the pipe orifice of the oil pipe, and the water outlet end is fixedly connected with the pipe orifice of the sleeve pipe.
As a further optimization of the technical scheme of the invention, the hot water circulating system consists 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 pipe branch opening of the oil pipe, the water outlet end of the circulating water pipeline is fixedly connected with the pipe branch opening 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 pipe branch opening 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 pipeline.
As a further optimization of the technical scheme of the invention, the upper port of the sealing bushing joint is provided with a bushing inner shaft, the upper port of the ball injection packer packing pipe is provided with a packing pipe inner shaft, the port of the lower flange end of the sealing liquid sampling adapter is provided with an adapter inner shaft, and the upper port of the plunger is provided with a plunger inner shaft, so that the purpose of limiting the connection between components is achieved.
As 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 packing pipe.
As a further optimization of the technical scheme of the invention, the sealing bushing joint, the plunger, the packing tube of the ball-throwing packer and the sealing ring are all made of elastic metal materials, such as nickel-chromium steel or rolled manganese bronze.
As a further optimization of the technical scheme of the invention, a plurality of groups of grooves are uniformly formed in the outer wall of the middle section of the plunger along the circumference of the pipe, balls are arranged in the grooves, the diameter of the outer opening of each groove is smaller than that of each ball, and the purpose of reducing friction when the plunger and the sealing bush joint are disassembled is achieved.
The invention relates to an implementation process of a high-pressure pipe column sealing circulation heat tracing wax-preventing device, which comprises the following steps:
(a) The lower end of the oil pipe is fixedly connected with a sealing bushing joint and a ball throwing packer in sequence, the oil pipe is put into the sleeve, a sleeve plugging 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 a branch pipe opening of the oil pipe, and the water outlet end is fixedly connected with the branch pipe opening of the sleeve;
(b) The upper end of the core pipe is fixedly connected with the lower flange end of the sealed liquid production adapter, the lower end of the core pipe is fixedly connected with the plunger, the core pipe is put into an oil pipe to enable the plunger to be lowered to the joint of the sealing bush, and the upper flange end of the sealed liquid production adapter is fixedly connected with the liquid production control valve;
(c) Connecting the lower flange end of the sealing liquid sampling adapter to the oil pipe plugging ring, pressing down the core pipe to seal the plunger and the sealing bushing adapter, and fixedly connecting the lower flange end with the oil pipe plugging ring;
(d) Inflating and pressurizing in the core tube to push the soluble ball of the ball injection packer to move downwards, extruding the annular protruding section of the packing tube and the sealing ring to seal the oil tube and the sleeve and form an annular space, and simultaneously, enabling the oil tube and the core tube to form an annular space;
(e) The circulating water control valve and the circulating water pump of the hot water circulating system are opened, circulating hot water flows in from the branch pipe ports of the oil pipes, and sequentially passes through the annular channel between the core pipe and the oil pipes, the circulating hole on the sealing liner sleeve joint, the annular channel between the oil pipes and the sleeve pipe and the branch pipe ports of the sleeve pipe to form hot water circulation, and the core pipe is heated;
(f) The high-pressure oil and gas produced liquid flows upwards to dissolve the soluble ball, flows out of the core tube, flows to an oil and gas produced liquid pipeline on the ground through the sealed produced liquid adapter, and performs long-term stable production.
In summary, compared with the prior art, the invention has the following technical advantages: according to the high-pressure pipe column sealing circulation heat tracing wax-preventing device and the implementation process, three layers of nesting are carried out on the oil pipe, the sleeve and the core pipe, sealing between the sealing bush joint and the plunger is utilized, sealing isolation of high pressure at the bottom of a well is achieved by the ball throwing packer, annular spaces are respectively achieved between the oil pipe and the sleeve as well as between the oil pipe and the core pipe, oil gas produced liquid flows to the ground through the core pipe, circulating hot water is circulated through an independent pipeline, and the solar heater on the ground is utilized for heating the circulating hot water.
Drawings
FIG. 1 is a schematic diagram of a high pressure pipe column seal cycle heat tracing wax control device embodiment of the invention;
FIG. 2 is a cross-sectional view of a seal bushing joint in accordance with an embodiment of the invention;
FIG. 3 is a cross-sectional view of a ball-casting packer in accordance with an embodiment of the invention;
FIG. 4 is a cross-sectional view of the structure of a plunger in an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a sealed liquid sampling adapter in an embodiment of the present invention;
FIG. 6 is a schematic illustration of a core tube placement tubing in an embodiment of the process of the present invention;
FIG. 7 is a schematic view of a production cycle in the practice of an embodiment of the present invention;
In the figure: 1-tubing, 2-casing, 3-core tube, 4-sealed production fluid adapter, 5-hot water circulation system, 6-produced fluid control valve, 7-oil and gas produced fluid, 8-hot circulating water, 11-tubing plugging ring, 12-tubing branch orifice, 13-sealed liner joint, 14-ball-throwing packer, 21-casing plugging ring, 22-casing branch orifice, 31-plunger, 41-upper flange end, 42-lower flange end, 43-spacing ring, 44-adapter inner shaft space, 51-circulating water pipeline, 52-circulating water pump, 53-circulating water control valve, 54-solar heater, 131-liner annular protruding section, 132-circulating hole, 133-liner inner shaft space, 141-packing tube, 142-sealing ring, 143-soluble ball throwing, 311-sealing ring, 311-plunger inner shaft space, 312-ball, 1411-packing tube annular protruding section, 1412-packing tube inner shaft space.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Figures 1-7 show embodiments of the high pressure pipe column sealing cycle heat tracing wax control device and process of the present invention.
1-5, The high-pressure pipe column sealing circulation heat tracing wax-preventing device comprises an oil pipe 1, a sleeve 2, a core pipe 3, a sealing liquid extraction adapter 4, a sealing bush joint 13, a ball throwing 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;
The upper end of the sleeve 2 is fixedly provided with a sleeve plugging ring 21, 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 formed 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 port 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 circulating holes 132 are uniformly formed in the 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 injection packer 14;
The ball throwing packer 14 consists of a packing tube 141, a sealing ring 142 and a soluble ball throwing 143, wherein the inner diameter of the upper port of the packing tube 141 is larger than the outer diameter of the lower port of the sealing bush joint 13, the packing tube 141 is in a circular tube shape, a packing tube annular protruding section 1411 is arranged at the middle lower part of the inner wall of the packing tube, 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 is larger than the outer diameter of the packing tube 141, the sealing ring 142 is fixedly sleeved on the outer wall of the packing tube 141 at the packing tube annular protruding section 1411, and the diameter of the soluble ball throwing 143 is smaller than the inner diameter of the packing tube 141 and larger than the inner diameter of the packing tube annular protruding section 1411;
The sealing liquid production adapter 4 consists of two sections of pipe bodies which are mutually perpendicular, the upper end of the sealing liquid production adapter 4 is an upper flange end 41, the lower end of the sealing liquid production adapter is a lower flange end 42, a coaxial limiting ring 43 extends out of the pipe body of the sealing 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 sealing liquid production adapter 4 is fixedly connected with a produced liquid control valve 6, the upper flange end 41 of the sealing liquid production adapter 4 is fixedly connected with an oil gas produced liquid pipeline on the ground, and the lower flange end 42 of the sealing liquid production adapter 4 is fixedly connected with the upper port of the core pipe 3;
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, 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 bushing joint 13 and larger than the inner diameter of the bushing annular protruding section 131;
The water inlet end of the hot water circulation 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 circulation system 5 is composed of a circulation water pipe 51, a circulation water pump 52, a circulation water control valve 53 and a solar heater 54, wherein the water inlet end of the circulation water pipe 51 is fixedly connected with the oil pipe branch pipe orifice 12, the water outlet end is fixedly connected with the sleeve pipe branch pipe orifice 22, the circulation water pump 52 is arranged at the water outlet end of the circulation water pipe 51, the circulation water control valve 53 is arranged between the sleeve pipe branch pipe orifice 22 and the circulation water pump 52, and the solar heater 54 is arranged between the circulation water pump 52 and the water inlet end of the circulation water pipe 51.
In this embodiment, an inner bushing shaft gap 133 is provided at the upper port of the seal bushing joint 13, a packer inner shaft gap 1412 is provided at the upper port of the packing 141 of the ball injection packer 14, an inner joint shaft gap 44 is provided at the port of the lower flange end 42 of the seal production adapter 4, and an inner plunger shaft gap 311 is provided at the upper port of the plunger 31.
In this embodiment, the sealing ring 142 of the ball striking packer 14 is integrally connected to the outer wall of the packing 141.
In this embodiment, the sealing bush joint 13, the plunger 31, the packing tube 141 of the ball casting packer 14 and the sealing ring 142 are all made of rolled manganese bronze materials.
In this embodiment, six groups of grooves are uniformly arranged on the outer wall of the middle section of the plunger 31 along the circumference of the pipe, 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.
As shown in fig. 6-7, the implementation process of the high-pressure pipe column sealing circulation heat tracing wax-preventing device comprises the following steps:
(a) The lower end of the oil pipe 1 is fixedly connected with a sealing bushing joint 13 and a ball throwing packer 14 in sequence, the oil pipe 1 is lowered into the sleeve 2, a sleeve blocking ring 21 is fixedly connected with the outer wall of the oil pipe 1, the water inlet end of the hot water circulation system 5 is fixedly connected with an oil pipe branch pipe orifice 12, and the water outlet end is fixedly connected with a sleeve branch pipe orifice 22;
(b) The upper end of the core tube 3 is fixedly connected with the lower flange end 42 of the sealed liquid production adapter 4, the lower end is fixedly connected with the plunger 31, the core tube 3 is put into the oil pipe 1 to enable the plunger 31 to be put down to the sealing lining joint 13, and the upper flange end 41 of the sealed liquid production adapter 4 is fixedly connected with the produced liquid control valve 6;
(c) Connecting the lower flange end 42 of the sealing liquid sampling adapter 4 to the oil pipe plugging ring 11, pressing down the core tube 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 tube 3 to push the soluble ball 143 of the ball injection packer 14 to move downwards, and extruding the annular protruding section 1411 and the sealing ring 142 of the packing tube to seal and annulus the oil tube 1 and the sleeve 2, and simultaneously, the annulus between the oil tube 1 and the core tube 3;
(e) The circulating water control valve 53 and the circulating water pump 52 of the hot water circulating system 5 are opened, circulating hot water flows in from the pipe branch orifice 12 of the oil pipe, and sequentially passes through the annular passage between the core pipe 3 and the oil pipe 1, the circulating hole on the sealing bush joint 13, the annular passage between the oil pipe 1 and the sleeve 2 and the sleeve branch orifice 22 to form hot water circulation 8, and the core pipe 3 is heated;
(f) The high-pressure oil gas produced liquid 7 flows upwards to dissolve the soluble ball 143, flows out of the core tube 3, flows to an oil gas produced liquid pipeline on the ground through the sealed produced liquid adapter 4, and performs long-term stable production.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "upper", "lower", "one side", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Meanwhile, unless explicitly specified and limited otherwise, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The above description is not intended to limit the scope of the invention, but is intended to cover any modifications, equivalents, improvements or the like, which fall within the spirit and scope of the present invention.
Claims (5)
1. The high-pressure pipe column sealing circulation heat tracing wax-preventing device is characterized by comprising an oil pipe (1), a sleeve (2), a core pipe (3), a sealing liquid extraction adapter (4), a sealing bushing joint (13), a ball injection 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);
The upper end of the sleeve (2) is fixedly provided with a sleeve plugging ring (21), 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 formed 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 port of the sealing bushing joint (13);
The sealing bushing joint (13) is in a circular tube shape, the inner diameter of the upper port of the sealing bushing joint is larger than the outer diameter of the oil pipe (1), a bushing annular protruding section (131) is arranged in the middle of the inner wall of the sealing bushing joint (13), a plurality of circulating holes (132) are uniformly formed in the wall of the bushing joint above the bushing annular protruding section (131) along the circumference of the pipe, and the lower end of the sealing bushing joint (13) is fixedly connected with the upper port of the ball throwing packer (14);
The ball throwing packer (14) consists of a packing tube (141), a sealing ring (142) and a soluble ball throwing (143), wherein the inner diameter of the upper port of the packing tube is larger than the outer diameter of the lower port of the sealing bush joint (13), the packing tube (141) is in a circular tube shape, a packing tube annular protruding section (1411) is arranged at the middle lower part of the inner wall of the packing tube, 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) and the inner diameter of the sealing ring is larger than the outer diameter of the packing tube (141), the sealing ring (142) is fixedly sleeved on the outer wall of the packing tube (141) at the packing tube annular protruding section (1411), and the diameter of the soluble ball throwing (143) is smaller than the inner diameter of the packing tube (141) and larger than the inner diameter of the packing tube annular protruding section (1411);
the sealing liquid extraction adapter (4) consists of two sections of pipe bodies which are mutually perpendicular, wherein the upper end of the sealing liquid extraction adapter is an upper flange end (41), the lower end of the sealing liquid extraction adapter is a lower flange end (42), a coaxial limiting ring (43) extends out of the pipe body of the sealing liquid extraction 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 a central hole of the oil pipe plugging ring (11), the upper flange end (41) of the sealing liquid extraction adapter (4) is fixedly connected with a liquid extraction control valve (6), the lower flange end (42) of the sealing liquid extraction adapter (4) is fixedly connected with an upper port of the core pipe (3);
the plunger (31) is in a hollow fusiform shape, the upper port of the plunger 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), 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 bushing joint (13) and larger than the inner diameter of the bushing annular protruding section (131);
The water inlet end of the hot water circulation 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);
An inner bushing shaft gap (133) is arranged at the upper port of the sealing bushing joint (13), a packer pipe inner shaft gap (1412) is arranged at the upper port of a packer pipe (141) of the ball injection packer (14), an adapter inner shaft gap (44) is arranged at the port of a lower flange end (42) of the sealing liquid sampling adapter (4), and a plunger inner shaft gap (311) is arranged at the upper port of the plunger (31);
a plurality of groups of grooves are uniformly formed in the outer wall of the middle section of the plunger (31) along the circumference of the pipe, balls (312) are arranged in the grooves, and the diameter of the outer opening of each groove is smaller than that of each ball (312).
2. The high pressure pipe column sealing cycle heat tracing wax control device according to claim 1, wherein: the hot water circulation 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 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 control device according to claim 1, wherein: the sealing ring (142) of the ball throwing packer (14) is integrally connected with the outer wall of the packing tube (141).
4. The high pressure pipe column sealing cycle heat tracing wax control device according to claim 1, wherein: the sealing bushing joint (13), the plunger (31), the packing tube (141) of the ball throwing packer (14) and the sealing ring (142) are made of elastic metal materials.
5. The implementation process of the high-pressure pipe column sealing circulation heat tracing wax control device according to any one of claims 1 to 4, wherein the implementation process is characterized in that: the method comprises the following steps:
(a) The lower end of the oil pipe (1) is fixedly connected with a sealing bushing joint (13) and a ball throwing packer (14) in sequence, the oil pipe (1) is lowered into the sleeve (2), a sleeve blocking 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 is fixedly connected with a sleeve branch pipe orifice (22);
(b) The upper end of the core tube (3) is fixedly connected with the lower flange end (42) of the sealed liquid production adapter (4), the lower end of the core tube is fixedly connected with the plunger (31), the core tube (3) is put into the oil pipe (1) to enable the plunger (31) to be put down to the sealing bush joint (13), and the upper flange end (41) of the sealed liquid production adapter (4) is fixedly connected with the produced liquid control valve (6);
(c) Connecting the lower flange end (42) of the sealed liquid extraction adapter (4) to the oil pipe plugging ring (11), pressing down the core pipe (3) to seal the plunger (31) and the sealing bushing joint (13), and fixedly connecting the lower flange end (42) with the oil pipe plugging ring (11);
(d) Pumping and pressurizing in the core tube (3), pushing a soluble ball (143) of the ball injection packer (14) to descend, extruding a annular protruding section (1411) and a sealing ring (142) of the packing tube, sealing and annular space between the oil tube (1) and the sleeve (2), and annular space between the oil tube (1) and the core tube (3);
(e) The circulating water control valve (53) and the circulating water pump (52) of the hot water circulating system (5) are opened, circulating hot water flows in from the pipe orifice (12) of the oil pipe, sequentially passes 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 pipe orifice (22) of the sleeve, and forms a hot water circulation (8) to heat the core pipe (3);
(f) The high-pressure oil gas produced liquid (7) flows upwards to dissolve the soluble ball (143), flows out of the core tube (3), flows to an oil gas produced liquid pipeline on the ground through the sealed produced liquid adapter (4), and is produced stably for a long time.
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