CN201254982Y - Oil production system with heating, viscosity reducing and de-waxing device - Google Patents
Oil production system with heating, viscosity reducing and de-waxing device Download PDFInfo
- Publication number
- CN201254982Y CN201254982Y CNU2008201095371U CN200820109537U CN201254982Y CN 201254982 Y CN201254982 Y CN 201254982Y CN U2008201095371 U CNU2008201095371 U CN U2008201095371U CN 200820109537 U CN200820109537 U CN 200820109537U CN 201254982 Y CN201254982 Y CN 201254982Y
- Authority
- CN
- China
- Prior art keywords
- oil
- oil pipe
- hot water
- annular space
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses an oil heating, viscosity-reducing and wax-removing device, which comprises a heating furnace, a hot water pump, a sleeve and a double-layer oil pipe. The heating furnace and the hot water pump are connected with each other through a pipeline with flowing heat conducting liquid; the double-layer oil pipe is arranged in the sleeve; the inner pipe of the double-layer oil pipe is connected with an oil pump; the pipe wall of the outer layer of the double-layer oil pipe close to the oil pump is provided with a plurality of through holes which can communicate the annular space between the inner pipe and the outer pipe of the double-layer oil pipe and the annular space between the outer pipe of the double-layer oil pipe and the sleeve; radial baffles are arranged between the outer pipe of the double-layer oil pipe and the sleeve as well as between the inner pipe and the outer pipe of the double-layer oil pipe in the position close to the oil pump, so as to isolate the space at the two sides of the baffles; a heat conducting liquid inlet is communicated with the annular space between the inner pipe and the outer pipe of the double-layer oil pipe; and the heat conducting liquid outlet is communicated with the annular space between the outer pipe of the double-layer oil pipe and the sleeve. The utility model can solve the problems of errors in calculating the amount of the mixed water and the oil amount, difficult oil-water separation and high water consumption, and the failure thereof can not result in the shutdown of the oil well.
Description
Technical field
The utility model relates to a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has.
Background technology
Viscosity of crude and temperature relation show: viscosity of crude reduces along with the rising of temperature, and viscosity changes and also to have inflection temperature, and when temperature surpassed inflection temperature, viscosity of crude can sharply reduce.Viscosity height, heavy crude oil claim viscous crude.The viscous crude flow resistance is big, flows into pit shaft from oil reservoir, or it is all very difficult to give rise to ground from pit shaft.For the viscous crude that flows in the pit shaft, adopt viscosity reduction method or dilution method, take the heating exploitation method for the viscous crude in the oil reservoir.The viscosity reduction method adds a certain amount of soluble epoxide ethane, expoxy propane, lauryl alcohol ether, the agent of sodium alkyl benzene sulfonate isoreactivity in water, be made into active water solution.Inject into well according to a certain percentage, the interior viscous crude of active water solution and well is mixed, form the oil-in-water emulsion unsettled, that viscosity is lower, exploit with conventional method again by mechanism.
Also to prevent near long-pending wax on the tubing wall in the exploitation, to guarantee the oil well ordinary production with the shaft bottom.The paraffin that contains varying number in the crude oil under reservoir condition, generally is in dissolved state.When the oil pipe, temperature, pressure reduce crude oil gradually from the shaft bottom upwelling, and wax is separated out gradually, assemble, the long-pending tube wall that invests, and claim oil well paraffinication.It diminishes pipe aperture, influences capacity of well, and oil well is stopped production.The oil well of different oil fields, oil reservoir, because oil property is different with paraffin content, temperature, pressure, flox condition and oil pipe surface condition etc., the position of beginning wax deposition is also different.Flowing well, pumpingh well or gas-lift well be (comprising flow line) beginning wax deposition more than a certain well section all.In process of production, the temperature of oil reservoir is low near the shaft bottom, or because water filling, when making reservoir temperature be reduced to the wax deposition temperature, and also can be near the shaft bottom or the inner wax deposition of oil reservoir.The heating power wax removal with deep fat or other heat transfer medium circulation well cleanup, is taken the wax fusing outside the well out of.This method can be used for the oil well of various oil production methods.Near the stratum wax deposition shaft bottom can adopt molten the removing of the method for clamp-oning deep fat or solvent (as light oil) to amass wax.
The viscosity reduction of heavy oil wells conductive fluid heating at present technology mainly adopts water mixing and three kinds of technologies of ground water mixing under water mixing on the pump, the pump, as shown in Figure 1, the hot water of heating furnace 1 output by water pump 3 in big four 6 is sent into annular space between oil pipe 7 and the oil well casing 11, and enter in the oil pipe 7 near the through hole 10 of packer 8 from the oil pipe 7 and mix with crude oil, realization is to the heating of crude oil, mixed liquor after viscosity reduces is handled through water-oil separating at last more again by oil extraction pump 9 extraction, realizes crude oil production.Though this method reduces viscosity of crude, and can prevent wax deposition in the oil well, helps crude oil production, also brings the following problem that can't avoid, that is:
One, owing to the mode of taking hot water to mix with crude oil heats crude oil, thereby needs to consume a large amount of water, need to consume a large amount of heating energy simultaneously;
Two, since extraction be the mixed liquor of crude oil and water, at first need to carry out water-oil separating and handle, thereby increased the workload of oil extraction;
In a single day three, owing to stop hot feed in the oil well running, crude oil will pass through hole 10 and enter annular space between oil pipe 7 and the sleeve pipe 11, the paraffin of separating out in the crude oil will stop up through hole 10, even the annular space between shutoff oil pipe 7 and the sleeve pipe 11, cause the oil well production difficulty, therefore increased the management difficulty of oil well.
The utility model content
At the problems referred to above, the purpose of this utility model provides a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has, this system heats crude oil by adopting recirculated water, both reduced the viscosity of crude oil, prevent oil well paraffinication, saved water resource again, when heater breaks down, also can not bring extra adverse effect by oil well simultaneously, thereby make things convenient for the management of oil well.
For achieving the above object, a kind of oil extraction system that has the heating viscosity reduction except that wax apparatus of the utility model, comprise heating furnace, heat-exchanger pump, oil well casing, oil pipe and oil extraction pump, oil well casing is inserted solid in oil well, oil extraction pump is arranged on the oil pipe lower end, oil pipe is inserted in the oil well casing, and between near its lower end and oil well casing, be provided with packer, between oil pipe external surface above this packer and oil well casing, leave annular space, wherein, heating furnace, heat-exchanger pump is connected with described annular space by pipeline, and constitute a hot water circulation system with this annular space is common, utilize the hot water and the oil pipe tube wall of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe is heated.
Further, at least be provided with the conduit of a lower ending opening in the described annular space, this conduit lower end is near described packer setting, described heating furnace, heat-exchanger pump join by pipeline and conduit upper end, by conduit to described annular space bottom delivering hot water, the hot water that enters in the annular space rises along annular space, and sends into heating furnace in the upper end near described oil well casing once more by pipeline, constitutes hot water circulation system thus.
Further, described oil well casing upper end is provided with and has the braced structures that supports the conical surface, described oil pipe top is set with hanger, have on this hanger with described braced structures on the conical surface that is complementary of the support conical surface, oil pipe is mounted on the braced structures by hanger; Described annular space upper end is sealed by braced structures or by hanger; The water supply connector of be provided with also on the braced structures that an end and described conduit join, the other end and outside hot water conveyance conduit joining also is provided with backwater joint on the braced structures, the hot water in the described annular space is given described heating furnace through this backwater joint loopback.
Further, described oil well casing upper end connects big four, and described oil well casing upper end is provided with braced structures, and the upper end of described braced structures links to each other with the production tree lower end, and described annular space upper end is by braced structures and production tree sealing; Screwed connecting portion is extended in described production tree lower end, be used for linking to each other with oil pipe, the water supply connector that described production tree lower end is provided with an end and described conduit joins, the other end and outside hot water conveyance conduit join, backwater joint also is set on the braced structures, and the hot water in the described annular space is given described heating furnace through this backwater joint loopback.
Further, described oil pipe is a double-decker, has toroidal cavity between the double-layer tube wall, and this toroidal cavity lower end closed is provided with through hole near described packer upper surface place on the oil pipe outer wall; Described heating furnace, heat-exchanger pump by pipeline from oil pipe top the described toroidal cavity delivering hot water on oil pipe, enter the bottom that the interior hot water described through hole descending along toroidal cavity and on the oil pipe outer wall of toroidal cavity enters described annular space, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace once more by pipeline near the upper end of described oil well casing.
Further, described oil well casing upper end is provided with the braced structures that supports the conical surface, this braced structures upper end is provided with well head and is communicated with heat transfer device, it is bilateral flange arrangement that described well head is communicated with heat transfer device, its upper flanges is for joining with the oil field production tree, its lower end is threaded connecting portion, this threaded joints is used to connect the inner layer tube wall of described oil pipe, the outer wall top of described oil pipe is set with hanger, have on this hanger with described braced structures on the conical surface that is complementary of the support conical surface, the outer wall of oil pipe is mounted on the braced structures by hanger; Described annular space upper end is by braced structures or by the hanger sealing, and described toroidal cavity then is communicated with the heat transfer device sealing by well head; Braced structures is provided with backwater joint, and well head is communicated with heat transfer device and is provided with water supply connector, and the hot water in the described hot water circulation system enters described toroidal cavity through water supply connector, and sends described heating furnace back to through the backwater structure, moves in circles thus.
Further, described oil well casing upper end is provided with the braced structures that supports the conical surface, this braced structures upper end is provided with well head and is communicated with heat transfer device, it is bilateral flange arrangement that described well head is communicated with heat transfer device, its upper flanges is for joining with the oil field production tree, and its lower end is threaded connecting portion, and described threaded joints is a two-layer pipe, be used to connect the inside and outside layer tube wall of described oil pipe, described toroidal cavity then is communicated with the heat transfer device sealing by well head; Braced structures is provided with backwater joint, and well head is communicated with heat transfer device and is provided with water supply connector, and the hot water in the described hot water circulation system enters described toroidal cavity through water supply connector, and sends described heating furnace back to through the backwater structure, moves in circles thus.
Further, through hole on the described oil pipe outer wall is uniform around oil pipe axis annular, described packer is divided into the inner layer pipe packer that is used for packing inner layer tube wall and oil well casing and is used for the outer tube packer of packing outer wall and oil well casing, and two kinds of packers are annular.
Further, be provided with the surge tank that has fluviograph between described backwater joint and the heating furnace, be used for showing the water yield of pipeline.
The utility model is owing to adopt isolated closed circulation, be that conductive fluid is not mixed mutually with the crude oil liquid that flow out on the stratum, form well head to the closed circulation of pit shaft, thereby solve the problem that watering quantity and fuel gauging error and water-oil separating difficulty, water consumption are big, waste energy, and, oil heating viscosity reduction cause oil well to stop production when removing the wax apparatus Shi Buhui that breaks down, so maintenance is convenient, has higher promotional value.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structure chart that existing a kind of oil heating viscosity reduction removes wax apparatus;
Fig. 2 is the structure chart that the heating viscosity reduction removes the oil extraction system of wax apparatus that has of the utility model embodiment 1;
Fig. 3 is the structure chart that the heating viscosity reduction removes the oil extraction system of wax apparatus that has of the utility model embodiment 2;
Fig. 4 is the structure chart that the heating viscosity reduction removes the oil extraction system of wax apparatus that has of the utility model embodiment 3;
Fig. 5 is the double layer oil pipe structure chart of the utility model embodiment 3;
Fig. 6 is the structure chart that the heating viscosity reduction removes the oil extraction system of wax apparatus that has of the utility model embodiment 4.
The specific embodiment
Embodiment 1:
As shown in Figure 2, present embodiment provides a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has, comprise: heating furnace 1, heat-exchanger pump 3, oil well casing 11, oil pipe 7 and oil extraction pump 9, oil well casing 11 is inserted solid in oil well, oil extraction pump 9 is arranged on oil pipe 7 lower ends, oil pipe 7 is inserted in the oil well casing 11, and is being provided with packer 18 near between its lower end and the oil well casing 11, is used for preventing that conductive fluid from flowing in the oil reservoir and play the effect of support oil pipe 7.Between oil pipe 7 external surfaces above this packer 18 and oil well casing 11, leave annular space, wherein, heating furnace 1, heat-exchanger pump 3 are connected with annular space by pipeline 2, and constitute a hot water circulation system with this annular space is common, utilize the hot water and oil pipe 7 tube walls of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe 7 is heated.
At least be provided with the conduit 17 of a lower ending opening in the annular space, conduit 17 lower ends are provided with near packer 18, heating furnace 1, heat-exchanger pump 3 join by pipeline and conduit 17 upper ends, by conduit 17 to annular space bottom delivering hot water, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace 1 once more by pipeline near the upper end of oil well casing 11.
Oil well casing 11 upper ends connect the big four 6 that has the conical surface, the upper end of big four 6 links to each other with the flange of production tree 4 lower ends, oil pipe 7 links to each other with the hanger that has the conical surface, the hanger conical surface matches with the conical surface of big four 6, conduit 17 is connected with the outlet of heat-exchanger pump 3 by a side valve door 12 of big four 6, the opposite side valve of big four 6 is a backwater joint, links to each other with the inlet of heating furnace 1.
Also be provided with the surge tank 31 that has fluviograph between backwater joint and the heating furnace 1, be used for showing the water yield of pipeline, when because the leakage of pipeline when causing the water yield in the hot water circulation system to reduce to a certain degree, just need be in hot water circulation system amount of makeup water.
It is as follows except that the using method of the oil extraction system of wax apparatus that this has the heating viscosity reduction:
1, downhole tools such as oil pipe 7, sucker rod 91, oil extraction pump 9 are configured inserts in the well, connect big four 6, well head production tree 4.
2, well-flushing and filling heat-conductive liquid: the crude oil mixed liquor in the pit shaft is thoroughly washed out, in pit shaft, fill with required conductive fluid (demineralized water) then.
3, be lowered to conduit and backwater joint, heating furnace 1, heat-exchanger pump 3, conduit 17 and water supply connector are connected in turn with pipeline.
4, required conductive fluid is pumped into conduit 17 by the water supply connector of heat-exchanger pump 3 by production tree 4 belows and big four 6 junctions and begin the circulation heating, after conductive fluid temperature constant relatively (greater than this well inflection temperature or wax deposition point temperature), start pumpingh well, adjust the surface production parameter, guarantee the oil well ordinary production.The high temperature conductive fluid from bottom to top in the flow process by heat exchange method with the crude oil liquid in the thermal energy transfer rail 7, reach the intensification viscosity reduction, increase single well productivity, reduce the individual well cost, improve the purpose of system benefit and efficient.Heat-conducting liquid after the exchange heat returns heating furnace 1 by backwater joint, pumps in the well through heat-exchanger pump 3 after the heating again, moves in circles, continuously heating.
5, replenish conductive fluid according to conductive fluid dissipation situation (as leaking etc.) in good time.
Present embodiment has the structure that the heating viscosity reduction removes the oil extraction system of wax apparatus, has following characteristics:
The conduit of conductive fluid being introduced by being provided between oil pipe and casing tube, adopt the isolated mode of crude oil in conductive fluid and the oil pipe that crude oil is heated, to reach the purpose of viscosity reduction, paraffin removal, so former well head and oil pipe are not made change, simple and convenient.
Embodiment 2:
As shown in Figure 3, present embodiment provides a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has, comprise: heating furnace 1, heat-exchanger pump 3, oil well casing 11, oil pipe 7 and oil extraction pump 9, oil well casing 11 is inserted solid in oil well, oil extraction pump 9 is arranged on oil pipe 7 lower ends, oil pipe 7 is inserted in the oil well casing 11, and is being provided with packer 18 near between its lower end and the oil well casing 11, is used for preventing that conductive fluid from flowing in the oil reservoir and play the effect of support oil pipe 7.Between oil pipe 7 external surfaces above this packer 18 and oil well casing 11, leave annular space, wherein, heating furnace 1, heat-exchanger pump 3 are connected with annular space by pipeline 2, and constitute a hot water circulation system with this annular space is common, utilize the hot water and oil pipe 7 tube walls of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe 7 is heated.
At least be provided with the conduit 17 of a lower ending opening in the annular space, conduit 17 lower ends are provided with near packer 18, heating furnace 1, heat-exchanger pump 3 join by pipeline and conduit 17 upper ends, by conduit 17 to annular space bottom delivering hot water, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace 1 once more by pipeline near the upper end of oil well casing 11.
Also be provided with the surge tank 31 that has fluviograph between backwater joint and the heating furnace 1, be used for showing the water yield of pipeline, when because the leakage of pipeline when causing the water yield in the hot water circulation system to reduce to a certain degree, just need be in hot water circulation system amount of makeup water.
It is identical with embodiment 1 except that the using method of the oil extraction system of wax apparatus that this has the heating viscosity reduction.
Present embodiment has the structure that the heating viscosity reduction removes the oil extraction system of wax apparatus, compares with embodiment 1, has following characteristics:
The well head connected mode is changed, do not use hanger, the production tree bottom is transformed, oil pipe is directly linked to each other with production tree, and conduit directly penetrates vertically downward from the flange of production tree, conduit uses straight tube to get final product, needn't be as adding bent tube section among the embodiment 1, conductive fluid is mobile better like this, so former well head and oil pipe is not made change, only process the lower flange of a production tree, simple and convenient.
Embodiment 3:
As shown in Figure 4 and Figure 5, present embodiment provides a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has, comprise: heating furnace 1, heat-exchanger pump 3, oil well casing 11, oil pipe 7 ' and oil extraction pump 9, oil well casing 11 is inserted solid in oil well, oil extraction pump 9 is arranged on oil pipe 7 ' lower end, oil pipe 7 ' is inserted in the oil well casing 11, and is being provided with packer near between its lower end and the oil well casing 11, is used for preventing that conductive fluid from flowing in the oil reservoir and play the effect of support oil pipe 7 '.Between 7 ' external surface of the oil pipe above this packer and oil well casing 11, leave annular space, wherein, heating furnace 1, heat-exchanger pump 3 are connected with annular space by pipeline, and constitute a hot water circulation system with this annular space is common, utilize the hot water and the oil pipe 7 ' tube wall of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe 7 ' is heated.
Oil pipe 7 ' is a double-decker, has toroidal cavity between the double-layer tube wall, this toroidal cavity lower end closed, and oil pipe outer wall 71 ' is gone up near packer upper surface place and is provided with through hole 10 '; Heating furnace 1, heat-exchanger pump 3 by pipeline 2 from oil pipe top the toroidal cavity delivering hot water on oil pipe, enter the bottom that hot water in the toroidal cavity and through hole through oil pipe outer wall 71 ' on 10 ' descending along toroidal cavity enters annular space, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace 1 once more by pipeline near the upper end of oil well casing 11.
Oil well casing 11 upper ends connect the big four 6 that has the conical surface, big four 6 upper ends connect well head and are communicated with heat transfer device, it is bilateral flange arrangement that well head is communicated with heat transfer device, screwed connecting portion is extended in the lower end, be used to connect the inner layer tube wall 72 ' of oil pipe 7 ', the outer wall of oil pipe 7 links to each other with the hanger that has the conical surface, the conical surface of hanger matches with the conical surface of big four 6, well head is communicated with the heat transfer device outer wall and is provided with water supply connector 5, link to each other with the heat-exchanger pump output by pipeline, one side valve door 12 of big four 6 is a backwater joint, link to each other with heating furnace 1 input by pipeline, through hole 10 ' on the oil pipe outer wall 71 ' is uniform around oil pipe axis annular, packer is divided into the inner layer pipe packer 18 that is used for packing inner layer tube wall 72 ' and oil well casing 11 and 8, the two kinds of packers of outer tube packer that are used for packing outer wall 71 ' and oil well casing 11 is annular.
Also be provided with the surge tank 31 that has fluviograph between backwater joint and the heating furnace 1, be used for showing the water yield of pipeline, when because the leakage of pipeline when causing the water yield in the hot water circulation system to reduce to a certain degree, just need be in hot water circulation system amount of makeup water.
It is as follows except that the using method of the oil extraction system of wax apparatus that this has the heating viscosity reduction:
1, downhole tools such as oil pipe 7 ', sucker rod 91, oil extraction pump 9 are configured inserts in the well, connect big four 6, well head is communicated with heat transfer device, well head production tree 4, backwater joint, heating furnace 1, heat-exchanger pump 3 and water supply connector 5 are connected in turn with pipeline.
2, well-flushing and filling heat-conductive liquid: the crude oil mixed liquor in the pit shaft is thoroughly washed out, in pit shaft, fill with required conductive fluid (demineralized water) then.
3, the toroidal cavity that required conductive fluid is pumped into by water supply connector by heat-exchanger pump 3 between the double-layer tube wall of oil pipe 7 ' begins the circulation heating, after conductive fluid temperature constant relatively (greater than this well inflection temperature or wax deposition point temperature), start pumpingh well, adjust the surface production parameter, guarantee the oil well ordinary production.The high temperature conductive fluid from the top down in the flow process by heat exchange method with the crude oil liquid in the thermal energy transfer rail 7 ', reach the intensification viscosity reduction, increase single well productivity, reduce the individual well cost, improve the purpose of system benefit and efficient.Heat-conducting liquid after the exchange heat returns heating furnace 1 by backwater joint, pumps in the well through heat-exchanger pump 3 after the heating again, moves in circles, continuously heating.
4, replenish conductive fluid according to conductive fluid dissipation situation (as leaking etc.) in good time.
Present embodiment oil heating viscosity reduction removes the structure of wax apparatus, has following characteristics:
1. by bimetallic tube flange connecting apparatus (well head connection heat transfer device) and outer wall hanger well head production tree and ectonexine tube wall are coupled together, inner layer tube wall upper end being threaded by flange connecting apparatus, the outer wall upper end is threaded with hanger, by the steel ring sealing of bimetallic tube flange connecting apparatus; Well head connects by flange, so former well head is not made change, only needs bimetallic tube flange connecting apparatus of processing to get final product, and is simple and convenient.
2. do not interconnect between the double layer oil pipe,, do not need junction plate to connect simplified processing process so can take the different oil pipe of two cover specifications to apply mechanically.
3. by being installed, two cover packers can realize the pump heating, the heating better effects if under pump.
Embodiment 4:
As shown in Figure 6, present embodiment provides a kind of oil extraction system that the heating viscosity reduction removes wax apparatus that has, comprise: heating furnace 1, heat-exchanger pump 3, oil well casing 11, oil pipe 7 ' and oil extraction pump 9, oil well casing 11 is inserted solid in oil well, oil extraction pump 9 is arranged on oil pipe 7 ' lower end, oil pipe 7 ' is inserted in the oil well casing 11, and is being provided with packer near between its lower end and the oil well casing 11, is used for preventing that conductive fluid from flowing in the oil reservoir and play the effect of support oil pipe 7 '.Between 7 ' external surface of the oil pipe above this packer and oil well casing 11, leave annular space, wherein, heating furnace 1, heat-exchanger pump 3 are connected with annular space by pipeline, and constitute a hot water circulation system with this annular space is common, utilize the hot water and the oil pipe 7 ' tube wall of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe 7 ' is heated.
Oil pipe 7 ' is a double-decker, has toroidal cavity between the double-layer tube wall, this toroidal cavity lower end closed, and oil pipe outer wall 71 ' is gone up near packer upper surface place and is provided with through hole 10 '; Heating furnace 1, heat-exchanger pump 3 by pipeline 2 from oil pipe top the toroidal cavity delivering hot water on oil pipe, enter the bottom that hot water in the toroidal cavity and through hole through oil pipe outer wall 71 ' on 10 ' descending along toroidal cavity enters annular space, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace 1 once more by pipeline near the upper end of oil well casing 11.
Oil well casing 11 upper ends connect big four 6, big four 6 upper ends connect well head and are communicated with heat transfer device, it is bilateral flange arrangement that well head is communicated with heat transfer device, the connecting portion of two-layer pipe is extended in the lower end, be used to connect oil pipe in, outer wall, well head connection heat transfer device is divided into the two parts up and down by being threaded, top comprises upper surface flange and inner layer tube wall, the lower part comprises lower surface flange and outer tube wall, well head is communicated with the heat transfer device outer wall and is provided with water supply connector 5, link to each other with heat-exchanger pump 3 outputs by pipeline, one side valve door 12 of big four 6 is a backwater joint, link to each other with heating furnace 1 input by pipeline, through hole 10 ' on the oil pipe outer wall 71 ' is uniform around oil pipe axis annular, packer is divided into the inner layer pipe packer 18 that is used for packing inner layer tube wall and oil well casing and 8, the two kinds of packers of outer tube packer that are used for packing outer wall and oil well casing is annular.
Also be provided with the surge tank 31 that has fluviograph between backwater joint and the heating furnace 1, be used for showing the water yield of pipeline, when because the leakage of pipeline when causing the water yield in the hot water circulation system to reduce to a certain degree, just need be in hot water circulation system amount of makeup water.
It is identical with embodiment 1 except that the using method of the oil extraction system of wax apparatus that this has the heating viscosity reduction.
Present embodiment is compared with embodiment 3, by the structure of linkage (well head connection heat transfer device) is improved, making does not need to use hanger (if use hanger when connecting double layer oil pipe, when using the oil pipe of special size, there is not the corresponding standard hanger to match with it, need design and produce special hanger separately), so only processing linkage gets final product, structure is simpler, and linkage employing split design, is convenient to install.
The utility model is owing to adopt isolated closed circulation, be that conductive fluid is not mixed mutually with the crude oil liquid that flow out on the stratum, form well head to the closed circulation of pit shaft, thereby solve the problem that watering quantity and fuel gauging error and water-oil separating difficulty, water consumption are big, waste energy, and, oil heating viscosity reduction cause oil well to stop production when removing the wax apparatus Shi Buhui that breaks down, so maintenance is convenient, has higher promotional value.
Above-mentioned with reference to embodiment to the description that the utility model carries out, be illustrative rather than determinate, therefore, should belong within the protection domain of the present utility model in the variation and the modification that do not break away under the utility model general plotting.
Claims (9)
1. one kind has the oil extraction system that the heating viscosity reduction removes wax apparatus, it is characterized in that, comprise heating furnace, heat-exchanger pump, oil well casing, oil pipe and oil extraction pump, oil well casing is inserted solid in oil well, oil extraction pump is arranged on the oil pipe lower end, oil pipe is inserted in the oil well casing, and between near its lower end and oil well casing, be provided with packer, between oil pipe external surface above this packer and oil well casing, leave annular space, wherein, heating furnace, heat-exchanger pump is connected with described annular space by pipeline, and constitute a hot water circulation system with this annular space is common, utilize the hot water and the oil pipe tube wall of circular flow in the hot water circulation system to carry out interchange of heat, the crude oil in the oil pipe is heated.
2. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 1, it is characterized in that, at least be provided with the conduit of a lower ending opening in the described annular space, this conduit lower end is near described packer setting, described heating furnace, heat-exchanger pump join by pipeline and conduit upper end, by conduit to described annular space bottom delivering hot water, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace once more by pipeline near the upper end of described oil well casing.
3. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 2, it is characterized in that, described oil well casing upper end is provided with and has the braced structures that supports the conical surface, described oil pipe top is set with hanger, have on this hanger with described braced structures on the conical surface that is complementary of the support conical surface, oil pipe is mounted on the braced structures by hanger; Described annular space upper end is sealed by braced structures or by hanger; The water supply connector of be provided with also on the braced structures that an end and described conduit join, the other end and outside hot water conveyance conduit joining also is provided with backwater joint on the braced structures, the hot water in the described annular space is given described heating furnace through this backwater joint loopback.
4. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 2, it is characterized in that, described oil well casing upper end is provided with braced structures, and the upper end of described braced structures links to each other with the production tree lower end, and described annular space upper end is by braced structures and production tree sealing; Screwed connecting portion is extended in described production tree lower end, be used for linking to each other with oil pipe, the water supply connector that described production tree lower end is provided with an end and described conduit joins, the other end and outside hot water conveyance conduit join, backwater joint also is set on the braced structures, and the hot water in the described annular space is given described heating furnace through this backwater joint loopback.
5. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 1, it is characterized in that described oil pipe is a double-decker, have toroidal cavity between the double-layer tube wall, this toroidal cavity lower end closed is provided with through hole near described packer upper surface place on the oil pipe outer wall; The described toroidal cavity delivering hot water on oil pipe enters the bottom that hot water described through hole descending along toroidal cavity and on the oil pipe outer wall in the toroidal cavity enters described annular space from oil pipe top by pipeline for described heating furnace, heat-exchanger pump, the hot water that enters in the annular space rises along annular space, and, constitute hot water circulation system thus sending into heating furnace once more by pipeline near the upper end of described oil well casing.
6. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 5, it is characterized in that, described oil well casing upper end is provided with the braced structures that supports the conical surface, this braced structures upper end is provided with well head and is communicated with heat transfer device, it is bilateral flange arrangement that described well head is communicated with heat transfer device, its upper flanges is for joining with the oil field production tree, its lower end is threaded connecting portion, this threaded joints is used to connect the inner layer tube wall of described oil pipe, the outer wall top of described oil pipe is set with hanger, have on this hanger with described braced structures on the conical surface that is complementary of the support conical surface, the outer wall of oil pipe is mounted on the braced structures by hanger; Described annular space upper end is by braced structures or by the hanger sealing, and described toroidal cavity then is communicated with the heat transfer device sealing by well head; Braced structures is provided with backwater joint, and well head is communicated with heat transfer device and is provided with water supply connector, and the hot water in the described hot water circulation system enters described toroidal cavity through water supply connector, and sends described heating furnace back to through the backwater structure, moves in circles thus.
7. the oil extraction system that has the heating viscosity reduction except that wax apparatus according to claim 5, it is characterized in that, described oil well casing upper end is provided with the braced structures that supports the conical surface, this braced structures upper end is provided with well head and is communicated with heat transfer device, it is bilateral flange arrangement that described well head is communicated with heat transfer device, its upper flanges is for joining with the oil field production tree, its lower end is threaded connecting portion, described threaded joints is a two-layer pipe, be used to connect the inside and outside layer tube wall of described oil pipe, described toroidal cavity then is communicated with the heat transfer device sealing by well head; Braced structures is provided with backwater joint, and well head is communicated with heat transfer device and is provided with water supply connector, and the hot water in the described hot water circulation system enters described toroidal cavity through water supply connector, and sends described heating furnace back to through the backwater structure, moves in circles thus.
8. according to claim 6 or the 7 described oil extraction systems that have the heating viscosity reduction except that wax apparatus, it is characterized in that, through hole on the described oil pipe outer wall is uniform around oil pipe axis annular, described packer is divided into the inner layer pipe packer that is used for packing inner layer tube wall and oil well casing and is used for the outer tube packer of packing outer wall and oil well casing, and two kinds of packers are annular.
9. according to each described oil extraction system that has the heating viscosity reduction except that wax apparatus in claim 3 or 4 or 6 or 7, it is characterized in that, be provided with the surge tank that has fluviograph between described backwater joint and the heating furnace, be used for showing the water yield of pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095371U CN201254982Y (en) | 2008-07-30 | 2008-07-30 | Oil production system with heating, viscosity reducing and de-waxing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201095371U CN201254982Y (en) | 2008-07-30 | 2008-07-30 | Oil production system with heating, viscosity reducing and de-waxing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201254982Y true CN201254982Y (en) | 2009-06-10 |
Family
ID=40738299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201095371U Expired - Fee Related CN201254982Y (en) | 2008-07-30 | 2008-07-30 | Oil production system with heating, viscosity reducing and de-waxing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201254982Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943161A (en) * | 2010-09-02 | 2011-01-12 | 白霞 | Waterable oil-well pump plunger |
| CN102322223A (en) * | 2011-08-31 | 2012-01-18 | 中国石油天然气股份有限公司 | Geothermal heat superconducting heat-transferring wax eliminating and preventing sucker rod |
| CN102434138A (en) * | 2011-10-14 | 2012-05-02 | 西南石油大学 | Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof |
| CN102841392A (en) * | 2011-06-23 | 2012-12-26 | 苏州五方光电科技有限公司 | Circulating system for water used for paraffin removal |
| CN104405354A (en) * | 2014-10-22 | 2015-03-11 | 西南石油大学 | Improved heavy oil thermal recovery method and device |
| CN105735955A (en) * | 2016-02-19 | 2016-07-06 | 栾良辉 | Oil extraction system for viscous heavy oil |
| CN105980655A (en) * | 2014-02-05 | 2016-09-28 | 石油印度有限公司 | A method for preventing wax deposition in oil wells with packers |
| CN106948798A (en) * | 2016-09-29 | 2017-07-14 | 鲍守义 | A kind of oil well open type heat tracing circulation system and its operation method |
| CN110617031A (en) * | 2019-10-17 | 2019-12-27 | 大庆天工开物能源科技有限公司 | Shaft wax-proof sand-proof tubular column for oil extraction in oil field |
| CN111894526A (en) * | 2020-08-17 | 2020-11-06 | 中国石油化工股份有限公司 | Wax-blocking-proof continuous production device of self-blowing oil well |
| CN113464092A (en) * | 2020-03-31 | 2021-10-01 | 中国石油天然气股份有限公司 | Wax control device and oil recovery wax control tubular column |
| CN113719247A (en) * | 2020-05-25 | 2021-11-30 | 中国石油天然气股份有限公司 | Thermal expansion casing pipe tripping method and device |
-
2008
- 2008-07-30 CN CNU2008201095371U patent/CN201254982Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101943161A (en) * | 2010-09-02 | 2011-01-12 | 白霞 | Waterable oil-well pump plunger |
| CN102841392A (en) * | 2011-06-23 | 2012-12-26 | 苏州五方光电科技有限公司 | Circulating system for water used for paraffin removal |
| CN102322223A (en) * | 2011-08-31 | 2012-01-18 | 中国石油天然气股份有限公司 | Geothermal heat superconducting heat-transferring wax eliminating and preventing sucker rod |
| CN102434138A (en) * | 2011-10-14 | 2012-05-02 | 西南石油大学 | Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof |
| CN105980655A (en) * | 2014-02-05 | 2016-09-28 | 石油印度有限公司 | A method for preventing wax deposition in oil wells with packers |
| CN105980655B (en) * | 2014-02-05 | 2019-06-11 | 石油印度有限公司 | The method for preventing the paraffin deposit in the oil well with packer |
| CN104405354A (en) * | 2014-10-22 | 2015-03-11 | 西南石油大学 | Improved heavy oil thermal recovery method and device |
| CN105735955A (en) * | 2016-02-19 | 2016-07-06 | 栾良辉 | Oil extraction system for viscous heavy oil |
| CN106948798A (en) * | 2016-09-29 | 2017-07-14 | 鲍守义 | A kind of oil well open type heat tracing circulation system and its operation method |
| CN110617031A (en) * | 2019-10-17 | 2019-12-27 | 大庆天工开物能源科技有限公司 | Shaft wax-proof sand-proof tubular column for oil extraction in oil field |
| CN113464092A (en) * | 2020-03-31 | 2021-10-01 | 中国石油天然气股份有限公司 | Wax control device and oil recovery wax control tubular column |
| CN113719247A (en) * | 2020-05-25 | 2021-11-30 | 中国石油天然气股份有限公司 | Thermal expansion casing pipe tripping method and device |
| CN113719247B (en) * | 2020-05-25 | 2023-11-28 | 中国石油天然气股份有限公司 | Method and device for breaking out thermal expansion sleeve |
| CN111894526A (en) * | 2020-08-17 | 2020-11-06 | 中国石油化工股份有限公司 | Wax-blocking-proof continuous production device of self-blowing oil well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201254982Y (en) | Oil production system with heating, viscosity reducing and de-waxing device | |
| CN102434138A (en) | Hot water injection circulation viscosity reduction system for producing ultra-deep ultra-heavy oil and application method thereof | |
| CN102635343B (en) | Method for lifting heavy oil through shaft in heavy oil cold production | |
| CN104481432A (en) | Sand washing pipe column for low-pressure absorption well and sand washing method | |
| CN102425403B (en) | Method for determining setting depth of coaxial double hollow sucker rods | |
| CN201273285Y (en) | Fluid-blending viscosity-reducing system of screw pump | |
| CN113062733B (en) | Segmented horizontal well water control three-dimensional simulation experiment device and experiment method thereof | |
| CN203050535U (en) | Double-pipe hollow sucker rod | |
| CN203441440U (en) | Thickened oil recovery system for horizontal well | |
| CN201218093Y (en) | Thick oil borehole viscosity-reduction oil-extraction heating apparatus | |
| CN207686693U (en) | A kind of flow string and device for producing thickened oil | |
| CN111827944B (en) | Pump-crossing closed circulating heating pipe column | |
| CN107401397A (en) | The method for communicating of dual horizontal well | |
| CN201738906U (en) | Process tube string for thinning, viscosity-reducing and lifting thickened oil | |
| CN201507281U (en) | Hollow sucker rod well flushing device | |
| CN105386733A (en) | Cleaning device for workover operation oil tube and oil sucker rod well mouth | |
| CN214787294U (en) | Hot washing pipe column for internal circulation heat-insulation pipe of offshore oilfield | |
| CN205532510U (en) | Paraffin pipe post is prevented to sucker rod pump oil recovery well | |
| CN209195385U (en) | Device for producing thickened oil and thickened oil recovery system | |
| CN101289933A (en) | Thick oil well bore heating and viscosity reducing hot extraction method and apparatus | |
| CN208330325U (en) | Flow string and device for producing thickened oil | |
| CN207437043U (en) | Viscosity-falling unit and oil extraction system | |
| CN102562014B (en) | High solidifying point crude oil exploiting device and high solidifying point crude oil exploiting method | |
| CN208587141U (en) | A kind of hot-washing wax remover tubing string | |
| CN201165865Y (en) | Oil well thermal cycle oil extraction apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090610 Termination date: 20090831 |