CN202348231U - Geothermal wellbore insulating system - Google Patents
Geothermal wellbore insulating system Download PDFInfo
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- CN202348231U CN202348231U CN 201120429992 CN201120429992U CN202348231U CN 202348231 U CN202348231 U CN 202348231U CN 201120429992 CN201120429992 CN 201120429992 CN 201120429992 U CN201120429992 U CN 201120429992U CN 202348231 U CN202348231 U CN 202348231U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The utility model relates to a geothermal wellbore insulating system. The technical scheme is characterized in that the geothermal wellbore insulating system mainly comprises an under-pump heat pipe high-temperature and constant-temperature system and an over-pump heat pipe sucker rod constant-temperature system; the under-pump heat pipe high-temperature and constant-temperature system consists of an under-pump heat pipe and a suspended pup joint; a heat absorption section at the bottom of the under-pump heat pipe is provided with a high-temperature oil layer, and a cooling section at the top is connected with an oil well pump by the suspended pup joint, and a middle section is connected with the heat absorption section at the bottom and the cooling section at the top through a heat transfer section; the over-pump heat pipe sucker rod constant-temperature system consists of a heat pipe sucker rod, a heat pipe polished rod and a heat pipe plugging and emptying device; the cooling section at the top is connected with the heat pipe polished rod and the middle section is connected by the heat transfer section; and the top of the heat pipe polished rod is connected with the heat pipe plugging and emptying device. The geothermal wellbore insulating system disclosed by the utility model has the following beneficial effects that: through the under-pump heat pipe high-temperature and constant-temperature system and the high-temperature and constant-temperature system of the heat pipe sucker rod, according to the requirements on the wellbore temperature, the temperatures at different depths of the well are extracted; the work temperature of a production pipe column is increased and maintained by using the heat pipe effect and the requirements on production and management are satisfied.
Description
Technical field:
The present invention relates to a kind of oil field pit shaft insulation new technology, particularly a kind of underground heat pit shaft heat-insulation system.
Background technology:
At present; In China's managemet of the developmet of oilfeild,, cause the content of wax and pitch crude oil fluidity variation owing to receive the influence of stratum natural temperature gradient; Stop up the production pipeline such as the pit shaft wax deposition; Perhaps because temperature reduction well product viscosity increases, can both have a strong impact on the ordinary production of oil well, the difficulty that increases management drops into production.So managemet of the developmet of oilfeild person and technician in order to guarantee the good fluidity of well product in the pit shaft oil pipe, reduce the pumping unit live load, and improve the oil recovery comprehensive benefit of management, pit shaft have been taked the heating measure of various ways.The mode that is for example adopted has: the one, by sleeve valve hot-water flooding in the oil jacket annular space; The 2nd, adopted the mode of hollow rod hot water circuit in recent years; The 3rd, adopt pit shaft to be lowered to the mode of ribbon heater, these many modes all realize that through consume fuel and direct power consumption these modes have not only been wasted human Limited resources, and, directly or indirectly caused the pollution of human environment.
Summary of the invention:
The object of the invention is exactly the above-mentioned defective that exists to prior art, and a kind of underground heat pit shaft heat-insulation system is provided, and extracts underground heat through heat pipe, realizes the task performance of equality of temperature at the bottom of whole pit shaft and the high temperature well; Guarantee the constant required operating temperature of production of pit shaft realization with this, reach the purpose that helps oil field oil recovery production and improve the oil recovery comprehensive benefit.
A kind of underground heat pit shaft heat-insulation system; Its technical scheme is: mainly be made up of heat pipe sucker rod constant temperature system on heat pipe high temperature constant temperature system and the pump under the pump; Heat pipe high temperature constant temperature system is made up of heat pipe under the pump and suspension short circuit under the described pump, and heat pipe is made up of endotherm section, heat transfer segment, heat release section under the described pump, and the endotherm section of bottom is located at the high temperature oil reservoir; The heat release section at top is connected with oil well pump through the suspension short circuit, and the centre is connected with the heat release section at top through the endotherm section of heat transfer segment with the bottom; Heat pipe sucker rod constant temperature system is made up of heat pipe sucker rod, heat pipe polished rod and heat pipe shutoff emptying device on the described pump; Described heat pipe sucker rod comprises endotherm section, heat transfer segment and heat release section; The bottom of endotherm section links to each other with the piston of oil well pump; The heat release section at top links to each other with the heat pipe polished rod, and is middle through the heat transfer segment connection; The top of described heat pipe polished rod connects heat pipe shutoff emptying device.
The endotherm section of heat pipe is made up of many heat pipes under the pump; Wherein, The lower end pipe is the heat pipe of a lower end for dead mouth or plug formation, and the upper end has thread, through screw thread many endotherm section heat pipes is coupled together; Constitute the endotherm section of heat-obtaining heat pipe under the pump, the enough heats of picked-up high temperature oil reservoir from the shaft bottom.
The Heat Transfer of Heat Pipe on Heat Pipe section constitutes hollow section by many hollow sections under the pump, links to each other successively through screw thread; Described heat release section is made up of many heat pipes, and wherein, topmost heat pipe suspension short circuit links to each other under the top of heat pipe and the pump, the heat release section of heat-obtaining heat pipe under the formation pump, and effect is to make the temperature into the pump well product reach the designing requirement temperature.
Above-mentioned heat pipe shutoff emptying device is installed the vacuum meter of monitoring heat pipe sucker rod system condition.
The invention has the beneficial effects as follows: direct action effect of the present invention is the high temperature constant temperature system through heat pipe high temperature constant temperature system under the pump and heat pipe sucker rod; Needs according to temperature in wellbore; Extract the temperature of different well depths; Utilize the operating temperature of raising of heat pipe effect and maintenance flow string, to satisfy the needs of production management.
Native system can substitute the electric-heating belt, hollow rod hot water circuit of oil development field by using now or the like pit shaft heater.
According to the conveying needs, can regulate wellhead temperature, to satisfy the temperature requirement that well product is delivered to gathering station.So just can reduce the configuration of well head heating furnace.
Because well product has had sufficiently high temperature, on the petroleum pipeline of metering room, installs the heat pipe cover additional, and heat exchange of heat pipe is installed in janitor's room, just can solve the heating problem of janitor's room.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is structure charts of heat pipe high temperature constant temperature system under the pump of the present invention;
Accompanying drawing 3 is structural representations of heat pipe under the pump of the present invention;
Accompanying drawing 4 is structural representations of the heat pipe sucker rod on the pump of the present invention;
Accompanying drawing 5 is structural representations of heat pipe sucker rod heat-insulation system on the pump of the present invention;
Among the last figure: heat pipe 2, tail pipe 3, short circuit 4, oil well pump 5, flow string 6, heat pipe sucker rod 7, heat pipe polished rod 8, heat pipe shutoff emptying device 9, vacuum meter 10 under high temperature oil reservoir 1, the pump.
The specific embodiment:
In conjunction with accompanying drawing 1-5, the present invention is done further description:
A kind of underground heat pit shaft heat-insulation system; Mainly constitute by heat pipe sucker rod constant temperature system on heat pipe high temperature constant temperature system and the pump under the pump; Heat pipe high temperature constant temperature system is made up of heat pipe under the pump 2 and suspension short circuit 4 under the described pump, and heat pipe 2 is made up of endotherm section, heat transfer segment, heat release section under the described pump, and the endotherm section of bottom is located at the high temperature oil reservoir; The heat release section at top is connected with oil well pump 5 through suspension short circuit 4, and the centre is connected with the heat release section at top through the endotherm section of heat transfer segment with the bottom; Heat pipe sucker rod constant temperature system is made up of heat pipe sucker rod 7, heat pipe polished rod 8 and heat pipe shutoff emptying device 9 on the described pump; Described heat pipe sucker rod 7 comprises endotherm section, heat transfer segment and heat release section; The bottom of endotherm section links to each other with the piston of oil well pump; The top of heat release section links to each other with heat pipe polished rod 8, and is middle through the heat transfer segment connection; The top of described heat pipe polished rod 8 connects heat pipe shutoff emptying device 9.On above-mentioned heat pipe shutoff emptying device 9, the vacuum meter 10 of monitoring heat pipe sucker rod system condition is installed.
Wherein, The endotherm section of heat pipe 2 is made up of many heat pipes under the pump, and wherein, heat pipe is the heat pipe of a lower end for dead mouth or plug formation bottom; The upper end has thread; Through screw thread many endotherm section heat pipes are coupled together, constitute the endotherm section of heat-obtaining heat pipe under the pump, the enough heats of picked-up high temperature oil reservoir 1 from the shaft bottom.Wherein, the heat transfer segment of heat pipe 2 is made up of the adiabatic heat pipe of many outer walls under the pump, links to each other successively through screw thread; Described heat release section is made up of many heat pipes, wherein, heat pipe topmost with pump under heat pipe suspension short circuit 4 link to each other, the heat release section of heat-obtaining heat pipe under the formation pump, effect is to make the temperature into the pump well product reach the designing requirement temperature.
Specify as follows:
Heat pipe high temperature constant temperature system implementation plan under the pump: the one, the endotherm section that constitutes by many heat pipes; This section is the heat pipe that selected material of basis and outer shape are processed, and wherein, heat pipe is the heat pipe of a lower end for dead mouth or plug formation bottom; The upper end has thread; Through screw thread many endotherm section heat pipes are coupled together, constitute the endotherm section of heat-obtaining heat pipe under the pump, effect is the enough heats of picked-up high temperature oil reservoir 1 from the shaft bottom.The 2nd, by the heat transfer segment that the adiabatic heat pipes of many outer walls constitute, its structure is identical with the endotherm section heat pipe structure, links to each other with screw thread root root, can decide on demand with can be different on the material, and effect is heat transfer, also can be used for neither endothermic nor exothermic.The 3rd, the heat release section that constitutes by many heat pipes; This section also is the heat pipe that selected material of basis and outer shape are processed; Type of attachment is the same, wherein, heat pipe topmost with pump under heat pipe suspension short circuit 4 link to each other; Constitute the heat release section of heat-obtaining heat pipe under the pump, effect is to make the temperature into the pump well product reach the designing requirement temperature; The 4th, heat pipe suspension short circuit is a special connector that serves many purposes under the pump; Effect one is that heat pipe under tail pipe 3, the pump 2 and oil well pump 5 bases are linked together; Effect two is the completion that realize heat pipe technology under the pump.
Heat pipe sucker rod heat-insulation system embodiment:
Heat pipe sucker rod 7 heat-insulation systems are to be made up of five parts such as endotherm section, heat transfer segment, heat release section, heat pipe polished rod and heat pipe shutoff emptying devices 8; Its form of structure is shown in accompanying drawing four.Its characteristic: the one, the endotherm section that constitutes by many heat pipe sucker rods 7; This section is the hollow section sucker rod that selected material of basis and outer shape are processed; Heat pipe sucker rod 7 links to each other with the oil well pump piston bottom; Then, many endotherm section heat pipe sucker rods 7 are coupled together, constitute the endotherm section of heat pipe sucker rod 7 through screw thread; Effect is to suck from oil well pump 5 to obtain enough heats the well product.The 2nd, by the heat transfer segment that many heat pipe sucker rods 7 constitute, its structure is identical with endotherm section heat pipe sucker rod 7 structures, links to each other with screw thread root root, can decide on demand with can be different on the material; Effect is just conducted heat, and also can be used for absorbing heat or heating.The 3rd, the heat release section that constitutes by many heat pipe sucker rods 7; This section also is the heat pipe sucker rod 7 that selected material of basis and outer shape are processed, and type of attachment is the same, wherein; Topmost heat pipe sucker rod 7 links to each other with heat pipe polished rod 8, constitutes the heat release section of heat pipe sucker rod 7; Effect is to make that the well product temperature reaches the design holding temperature in the flow string; The 4th, heat pipe polished rod 8 tops are connected with heat pipe shutoff emptying device 9, accomplish the heat pipe process structure of heat pipe sucker rod.Heat pipe shutoff emptying device 9 is special connectors that serve many purposes; Effect one is a heat pipe process structure of accomplishing the heat pipe sucker rod; Effect two is the heat pipe technology that realizes heat pipe sucker rod 7.
A kind of underground heat pit shaft heat preserving method, its technical scheme is may further comprise the steps:
At first, make up heat pipe high temperature constant temperature system under the pump: calculate and to confirm that pump sucks well product temperature required according to the ordinary production temperature needs of flow string on the pump 6, confirm the position and the length of the endotherm section of heat pipe 2 under the pump again according to local formation temperature gradient; Through workover treatment, with heat pipe under the pump 2 and tail pipe 3 connect separately be lowered to oil well after, be connected to again under the pump on the heat pipe suspension short circuit 4; Then, be connected with oil well pump 5 through heat pipe suspension short circuit 4 under the pump.
Secondly; Make up heat pipe sucker rod constant temperature system on the pump: carry out oil well pump 5 earlier and be connected operation, after the flow string on the pump 6 connects, usual manner is pressed in heat pipe sucker rod 7 endotherm section bottoms be connected with the piston of oil well pump 5 with flow string 6 oil pipes; Be lowered in the flow string; Topmost be connected with heat pipe polished rod 8, the heat pipe polished rod is installed heat pipe shutoff emptying device 9 topmost, and the vacuum meter 10 of observing monitoring pumping rod hot pipe system condition is installed on the heat pipe shutoff emptying device 9; After last two work were accomplished, entirely hot well tube heat-insulation system was completion.
Heat pipe 2 is made up of endotherm section, heat transfer segment, heat release section under the above-mentioned pump; The endotherm section of bottom is arranged on high temperature oil reservoir position; The heat release section at top is connected with oil well pump 5 through suspension short circuit 4, and the centre is connected with the heat release section at top through the endotherm section of heat transfer segment with the bottom;
Above-mentioned heat pipe sucker rod 7 is made up of endotherm section, heat transfer segment, heat release section; The endotherm section of bottom is installed in oil well pump 5 and sucks in the well product; To obtain enough heats, the heat release section at top links to each other with heat pipe polished rod 8, and effect is to make that the well product temperature reaches the design holding temperature in the flow string; Middle through the heat transfer segment connection.
Effect of the present invention is following:
Native system can substitute the electric-heating belt, hollow rod hot water circuit of oil development field by using now or the like pit shaft heater.
According to the conveying needs, can regulate wellhead temperature, to satisfy the temperature requirement that well product is delivered to gathering station.So just can reduce the configuration of well head heating furnace; Also can reduce the heating furnace that the part measuring station is provided with.
Owing to be provided with underground heat pit shaft heat-insulation system, make the well head well product have sufficiently high temperature, if on the petroleum pipeline of metering room, install the heat pipe cover additional, and heat exchange of heat pipe is installed in janitor's room, just can solve the heating problem of janitor's room.
Economical effective:
Environmental protection industry, green energy conservation: adopt heat pipe picked-up underground heat, neither pollute also atmosphere pollution not of stratum.The zero free of contamination innovative technology of energy consumption has been realized the fine wish of people from enterprise environmental protection.
Simple in structure, investment reduces: simplified the complicated technology and the material input of former heating tape, hollow rod hot water circuit heat form, not only saved investment but also saved resource.
Constant high temperature, stable yields are efficient: because temperature in wellbore is set according to this well effluent production requirement temperature; Huge thermal source has guaranteed constant high temperature; So, not only help the normal operation of producing, and good thrifty effect also arranged in the Kakyusei production. art.
Technology is simple, cost efficiency: because the wellhead temperature science is set, can exempt the heating furnace of well head and part measuring station, reduce the development investment cost.
Power consumption is zero, increases production relatively: because pit shaft adopts underground heat heating and insulation, so the waste of having saved gas fuel or electricity or coal equal energy source has promptly increased oil well output (natural gas can be amounted to oil production).
The constant temperature pit shaft, reduce operation: because temperature in wellbore has satisfied the needs of ordinary production, so, oil well work operations such as exempted that paraffin removal from oil well, heat are washed; Once completion, Unsupervised: after hot-pipe system is accomplished, just need not to have managed again, save labor.
The invention belongs to a new technology of the strategic new industry category of country's " energy-conserving and environment-protective industry ".Be a new technology and new approaches, can be applied to the numerous areas of social development according to the different demands of social production, life and economic development to geothermal utilization.
Claims (4)
1. underground heat pit shaft heat-insulation system; It is characterized in that: mainly constitute by heat pipe sucker rod constant temperature system on heat pipe high temperature constant temperature system and the pump under the pump; Heat pipe high temperature constant temperature system is made up of heat pipe under the pump (2) and suspension short circuit (4) under the described pump; Heat pipe under the described pump (2) is made up of endotherm section, heat transfer segment, heat release section; The endotherm section of bottom is located at the high temperature oil reservoir, and the heat release section at top is connected with oil well pump (5) through suspension short circuit (4), and the centre is connected with the heat release section at top through the endotherm section of heat transfer segment with the bottom; Heat pipe sucker rod constant temperature system is made up of heat pipe sucker rod (7), heat pipe polished rod (8) and heat pipe shutoff emptying device (9) on the described pump; Described heat pipe sucker rod (7) comprises endotherm section, heat transfer segment and heat release section; The bottom of endotherm section links to each other with the piston of oil well pump; The heat release section at top links to each other with heat pipe polished rod (8), and is middle through the heat transfer segment connection; The top of described heat pipe polished rod (8) connects heat pipe shutoff emptying device (9).
2. underground heat pit shaft heat-insulation system according to claim 1; It is characterized in that: the endotherm section of heat pipe under the pump (2) is made up of many heat pipes, and wherein, the lower end pipe is the heat pipe of a lower end for dead mouth or plug formation; The upper end has thread; Through screw thread many endotherm section heat pipes are coupled together, constitute the endotherm section of heat-obtaining heat pipe under the pump, the enough heats of picked-up high temperature oil reservoir (1) from the shaft bottom.
3. underground heat pit shaft heat-insulation system according to claim 1 is characterized in that: the heat transfer segment of heat pipe under the pump (2) constitutes hollow section by many hollow sections, links to each other successively through screw thread; Described heat release section is made up of many heat pipes, and wherein, topmost heat pipe suspension short circuit (4) links to each other under the top of heat pipe and the pump, the heat release section of heat-obtaining heat pipe under the formation pump, and effect is to make the temperature into the pump well product reach the designing requirement temperature.
4. underground heat pit shaft heat-insulation system according to claim 1 is characterized in that: described heat pipe shutoff emptying device (9) is installed the vacuum meter (10) of monitoring heat pipe sucker rod system condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120429992 CN202348231U (en) | 2011-11-03 | 2011-11-03 | Geothermal wellbore insulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120429992 CN202348231U (en) | 2011-11-03 | 2011-11-03 | Geothermal wellbore insulating system |
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| CN202348231U true CN202348231U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120429992 Expired - Fee Related CN202348231U (en) | 2011-11-03 | 2011-11-03 | Geothermal wellbore insulating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383762A (en) * | 2011-11-03 | 2012-03-21 | 王凯一 | Geothermal heat-insulating system and geothermal heat-insulating method for pit shaft |
| CN105370216A (en) * | 2014-08-29 | 2016-03-02 | 中国石油化工股份有限公司 | Heat-insulating completion pipe string |
| CN105401888A (en) * | 2014-08-29 | 2016-03-16 | 中国石油化工股份有限公司 | Thermal insulation completion pipe string and thermal insulation completion method |
-
2011
- 2011-11-03 CN CN 201120429992 patent/CN202348231U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383762A (en) * | 2011-11-03 | 2012-03-21 | 王凯一 | Geothermal heat-insulating system and geothermal heat-insulating method for pit shaft |
| CN105370216A (en) * | 2014-08-29 | 2016-03-02 | 中国石油化工股份有限公司 | Heat-insulating completion pipe string |
| CN105401888A (en) * | 2014-08-29 | 2016-03-16 | 中国石油化工股份有限公司 | Thermal insulation completion pipe string and thermal insulation completion method |
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| Date | Code | Title | Description |
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| 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: 20120725 Termination date: 20121103 |