CN205243490U - Energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit - Google Patents
Energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit Download PDFInfo
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- CN205243490U CN205243490U CN201520946035.4U CN201520946035U CN205243490U CN 205243490 U CN205243490 U CN 205243490U CN 201520946035 U CN201520946035 U CN 201520946035U CN 205243490 U CN205243490 U CN 205243490U
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Abstract
The utility model discloses an energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit, the elder generation includes the hierarchical hoop, packer, sand screen, the well -flushing valve that connect gradually after extremely certainly, the sand screen sets up at least two to the sand screen has connected gradually thermal -arrest control by temperature change economizer and heating power compensator after to from earlier between two liang. Thermal -arrest control by temperature change economizer includes tube, tube core, end cover, joint, inside the tube is placed in to the tube core, tube diaxon port installation end cover, the diaxon of tube end still sets up the joint, and the root of joint sets up the connection sealing member, the attached endothermic medium of inner wall of tube core, the heat energy medium is filled to heat absorption medium kind, and the well chambers of the heart of tube core flows past the hot -fluid. The utility model provides a steam take in and send out that the vapour inequality time is inhaled in the exploitation, steam affects the inefficiency, the poor problem of degree is vertically employed to the oil reservoir, make full use of heat energy cycle control pit shaft temperature reaches energy saving and consumption reduction.
Description
Technical field
The utility model relates to thermal production well completion tubular column, specifically down-hole thermal-arrest temperature-control energy-saving completion integral tubing string.
Background technology
Viscous crude resource is very abundant in the world, and its potential reserve may be 6 times of explored ordinary crude oils reserves, distributesScope is also very extensive, and all there is heavy crude reservoir in similar each oil-producing country. China's heavy crude reservoir major part is buried deeply, injects and steamsVapour is large along the heat loss of pit shaft, and in cyclic steam stimulation process, along with reservoir temperature and pressure decline gradually, crude oil is being liftedIn liter, constantly degassed and cooling, causes wellbore oil viscosity to raise, and flow resistance increases, and yield reducation is easily too earlyThe completed product run cycle, must control wellbore heat loss in order to improve production development effect, control temperature in wellbore, reach viscosity reductionThe object of volume increase.
The concrete implementation step that thermal production well completion adopts is at present: completion tubular column connects; Completion tubular column is lowered to; Swollen envelope bore holePacker, opens sizing collar; Well cementation, closes hydraulic stage collar; Hou Ning, bores plug; Well-flushing, acidifying; Lower steam injection string;Formation pre processing, steam injection; Stewing well; Open flow; Lower flow string, roofbolt. Construction is complicated, and the cycle is long, and construction cost is high,And completion tubular column used and accessory are metal material, and the heat loss of pit shaft and oil reservoir is large.
Utility model content
The purpose of this utility model is to provide down-hole thermal-arrest temperature-control energy-saving completion integral tubing string, lower tubular column and tool combinationsAfter completion, by hot fluid circulation well-flushing, improve utilization efficiency of heat energy, carry out temperature mould according to different reservoir condition simultaneouslyIntend controlling, while having solved cyclic steam stimulation, inhale vapour inequality, steam sweep efficiency is low, poor the asking of the longitudinal development degree of oil reservoirTopic, makes full use of heat circulation control temperature in wellbore, reaches energy-saving and cost-reducing.
In order to reach above-mentioned purpose, the utility model has adopted following technical scheme, down-hole thermal-arrest temperature-control energy-saving completion oneChange tubing string, comprise from first to after the sizing collar, packer, sand screen, the flushing valve that connect successively, described sand screen settingAt least two, and sand screen between any two from first to after be connected with thermal-arrest temperature-control energy saving device and thermal compensator in turn.
Described thermal-arrest temperature-control energy saving device comprises shell, tube core, end cap, joint, and described tube core is placed in shell inside, pipeShell diaxon port installation end lid, the two axial ends of described shell also arranges joint, and the root of joint arranges connection sealing element, instituteThe inwall of stating tube core attaches heat-absorbing medium, heat-absorbing medium kind filling heat energy medium, and the center cavity of tube core flows through hot fluid.
Described tube core is the capillary structure of being close to inner wall of tube shell, and capillary structure tube core is multiple layer metal wire mesh tube or fiber, clothComposite material tube, described heat-absorbing medium is lining, lining is made up of Multi-hole energy-saving ceramic honey comb or sintering metal.
Described shell is metal material or resin composite materials or ceramic composite or concrete composite material or carbon fiberComposite.
Described flushing valve is the board-like flushing valve of dish or spherically seated flushing valve.
The board-like flushing valve of dish comprises valve seat and inserts the sealing intubate of valve base cavity, the rear port installation guide shoe of valve seat, instituteState sealing intubate, valve seat circle wall and all offer through hole.
Compared to prior art, the utlity model has following beneficial effect:
The utility model is saved by sizing collar, packer, sand screen, thermal-arrest temperature-control energy saving device, thermal compensator and multiple-effectCan form by flushing valve, the main body of this thermal-arrest temperature-control energy saving device is with a shell, and internal cavities has heat energy medium and capillaryThe part compositions such as the tube core of structure, end cap, connection sealing element. By suitable hot-fluid conversion, tube wall temperature is adjusted to oilThe temperature that layer is corresponding suitable, to adjust the flow regime of crude oil on different section of reservoir, controls wellbore heat loss, reduces formerOil viscosity, carries out temperature simulation control according to different reservoir condition, strengthening internal heat transfer. Make full use of heat circulation controlTemperature in wellbore, strengthens hot fluid de-plugging effect, reduces interfacial tension, improves plane sweep efficiency, reach viscosity reduction volume increase,Energy-saving and cost-reducing object. This thermal-arrest temperature-control energy saving device can be placed on the position that any required heat energy of thermal recovery completion tubular column is optimized,Be suitable for various well types, after lower tubular column and tool combinations completion, by hot fluid circulation well-flushing, improve utilization efficiency of heat energy,The working procedure of having simplified thermal production well, has shortened the duration, has reduced cost.
Brief description of the drawings
Fig. 1 is down-hole of the present utility model thermal-arrest temperature-control energy-saving completion integral tubular column structure schematic diagram;
Fig. 2 is thermal-arrest temperature-control energy saving device schematic diagram;
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are respectively four kinds of structural representations of the tube core of thermal-arrest temperature-control energy saving device;
Fig. 7 is thermal-arrest temperature-control energy saving device cavity operation principle schematic diagram;
Fig. 8 is the structural representation of flushing valve.
1-sizing collar, 2-packer, 3-sand screen, 4-thermal-arrest temperature-control energy saving device, 401-heat energy medium, 402-hot-fluidBody, 403-heat-absorbing medium, 404-shell, 405-tube core; 406-end cap, 407-connection sealing element, 408-joint, 5-Thermal compensator, 6-flushing valve, 601-seals intubate; 602-valve seat; 603-guide shoe.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides referenceWith the use of explanation, be not used for the utility model to be limited.
As shown in Figure 1, the completion tubular column of the utility model embodiment comprise sizing collar 1, packer 2, sand screen 3,Thermal-arrest temperature-control energy saving device 4, thermal compensator 5 and efficient energy-saving flushing valve 6 form. Connect successively sizing collar, packer,Sand screen, flushing valve, at least two of described sand screen settings, and sand screen between any two from first to after be connected with in turnThermal-arrest temperature-control energy saving device and thermal compensator.
Described thermal-arrest temperature-control energy saving device 4 comprises shell 404, tube core 405, end cap 406, joint 408, described tube coreBe placed in shell inside, shell diaxon port installation end lid, the two axial ends of described shell also arranges joint, and the root of joint is establishedPut connection sealing element 407, the inwall of described tube core attaches heat-absorbing medium 403, heat-absorbing medium kind filling heat energy medium 401,The center cavity of tube core flows through hot fluid 402. Described tube core is the capillary structure of being close to inner wall of tube shell, and capillary structure tube core is manyLayer metallic mesh tube or fiber, cloth composite material tube, described heat-absorbing medium is lining, lining is by Multi-hole energy-saving ceramic honey combOr sintering metal forms. Described shell is metal material or resin composite materials or ceramic composite or concrete composite woodMaterial or carbon fibre composite.
Described flushing valve is the board-like flushing valve of dish or spherically seated flushing valve. The board-like flushing valve of dish comprises valve seat and inserts valveThe sealing intubate of seat inner chamber, the rear port of valve seat is installed guide shoe, and described sealing intubate, valve seat circle wall are all offered through hole.
According to the requirement of the condition of oil reservoir and production lifting, carry out the required heat energy budgetary estimate of oil reservoir, thermal-arrest temperature control is savedCan carry out the check of tubing string force analysis by device 4, serious for oil reservoir vertical heterogeneity, what the longitudinal development degree of oil reservoir was poor asksTopic, is adjusted at tube wall temperature the temperature that oil reservoir is corresponding suitable by suitable hot-fluid conversion, to adjust different section of reservoirThe flow regime of upper crude oil.
The Main Function of hot-fluid injection 402 is to increase reservoir drive energy, reduces viscosity of crude, reduces flow resistance. ThisOutward, crude oil expands and also contributes to improve recovery ratio, and to the solidifying oil reservoir of height or the lower heavy crude reservoir of viscosity of crude, raising is changedHot device efficiency, energy-saving effect is obvious. Meanwhile, near being conducive to avoid, top of oil horizon forms steam tonguing, has improved waterOil mobility ratio, the gravity segregation effect that such completion mode can be utilized hot fluid, has improved oil displacement efficiency and sweep efficiency.
Hot-fluid injection 402 (comprises hot-water flooding, waste heat sewage, steam, nitrogen, carbon dioxide, flue gas, hot compoundChemical agent and other thermals source etc.), can inject continuously, also can adopt the mode of intermittently injecting. Reduce viscosity of crude, strengthen heatFluid de-plugging effect, reduces interfacial tension, and the thermal expansion of fluid and rock reduces thickness compaction.
As shown in Figure 2, the main body of the thermal-arrest temperature-control energy saving device 4 of the utility model embodiment is with a shell404, internal cavities have heat energy medium 401, heat-absorbing medium 403 and capillary structure tube core 405, end cap 406, be connected closeThe part such as sealing 407, joint 408 composition. Shell 404 can be metal, can be also other composites, as treeThe composites after treatment such as fat, pottery, concrete, carbon fiber.
Heat energy medium 401 will have the higher latent heat of vaporization, thermal conductivity factor, suitable saturation pressure and boiling point, and lower is stickyDegree and good stability, also should have larger surface tension and the ability of wetting capillary structure, makes the capillary structure can be to heatEnergy medium effect also produces necessary capillary force, and heat energy medium can not produce dissolution to capillary structure and tube wall, otherwiseDissolved material will destroy capillary structure.
The tube core 405 of thermal-arrest temperature-control energy saving device 4 is capillary structures of being close to inner wall of tube shell, can use multiple layer metal silk screenOr the composite such as fiber, cloth is close to inwall to reduce thermal contact resistance with lining form, lining also can be by Multi-hole energy-saving honeycombPottery or sintering metal form, and can utilize waste and old porcelain tube material, Metal magnesium dross, gangue and shale for Raw material processing proportioningThe heat storage of sinter molding, material can be pottery, metal, fiber or other composites, can have multiple combination perhapsForm, the utility model has only been enumerated several, and as shown in accompanying drawing 3, Fig. 4, Fig. 5, Fig. 6, other assembled scheme is alsoBe considered as embodiment of the present utility model.
Different according to the combination of the aspects such as the structure of tube core 405, material and heat energy medium, reflux according to heat energy medium 401Power-section can be divided into core heat pipe, gravity-type, gravity auxiliary type, rotary-type, electrohydrodynamic type, magneto hydrodynamic type,Infiltration pattern of fever etc., the utility model has only been enumerated a kind, and as shown in Figure 7, other feasible program is also considered as this practicalityNovel embodiment.
As shown in Figure 8, the flushing valve 6 of the utility model embodiment is the board-like flushing valve of dish, also can wash with spherically seatedWell valve, the utility model has only provided the board-like efficient energy-saving flushing valve of dish structural representation, and other assembled scheme is also considered as thisThe embodiment of utility model. Wherein, guide shoe 603 can utilize the cavity operation principle of accompanying drawing 7 to design and process, closeEnvelope intubate 601 is as in Flushing tubular column lower going-into-well.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, otherUse the equivalence of patent spirit of the present utility model to change, all should all belong to the scope of the claims of the present utility model.
Claims (6)
1. down-hole thermal-arrest temperature-control energy-saving completion integral tubing string, it is characterized in that, comprise from first to after the sizing collar, packer, sand screen, the flushing valve that connect successively, at least two of described sand screen settings, and sand screen between any two from first to after be connected with thermal-arrest temperature-control energy saving device and thermal compensator in turn.
2. down-hole according to claim 1 thermal-arrest temperature-control energy-saving completion integral tubing string, it is characterized in that, described thermal-arrest temperature-control energy saving device comprises shell, tube core, end cap, joint, described tube core is placed in shell inside, shell diaxon port installation end lid, and the two axial ends of described shell also arranges joint, the root of joint arranges connection sealing element, the inwall of described tube core attaches heat-absorbing medium, filling heat energy medium in heat-absorbing medium, and the center cavity of tube core flows through hot fluid.
3. down-hole according to claim 2 thermal-arrest temperature-control energy-saving completion integral tubing string, it is characterized in that, described tube core is the capillary structure of being close to inner wall of tube shell, capillary structure tube core is multiple layer metal wire mesh tube or fiber, cloth composite material tube, described heat-absorbing medium is lining, and lining is made up of Multi-hole energy-saving ceramic honey comb or sintering metal.
4. down-hole according to claim 2 thermal-arrest temperature-control energy-saving completion integral tubing string, is characterized in that, described shell is metal material or resin composite materials or ceramic composite or concrete composite material or carbon fibre composite.
5. down-hole according to claim 1 thermal-arrest temperature-control energy-saving completion integral tubing string, is characterized in that, described flushing valve is the board-like flushing valve of dish or spherically seated flushing valve.
6. down-hole according to claim 5 thermal-arrest temperature-control energy-saving completion integral tubing string, it is characterized in that, the board-like flushing valve of dish comprises valve seat and inserts the sealing intubate of valve base cavity, the rear port installation guide shoe of valve seat, and described sealing intubate, valve seat circle wall are all offered through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520946035.4U CN205243490U (en) | 2015-11-24 | 2015-11-24 | Energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520946035.4U CN205243490U (en) | 2015-11-24 | 2015-11-24 | Energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit |
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| Publication Number | Publication Date |
|---|---|
| CN205243490U true CN205243490U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520946035.4U Expired - Fee Related CN205243490U (en) | 2015-11-24 | 2015-11-24 | Energy -conserving well completion integration tubular column of thermal -arrest control by temperature change in pit |
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| CN (1) | CN205243490U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761625A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | Underground thermal-arrest temperature-control energy-saving completion integral tubing string and technique |
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2015
- 2015-11-24 CN CN201520946035.4U patent/CN205243490U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761625A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | Underground thermal-arrest temperature-control energy-saving completion integral tubing string and technique |
| CN106761625B (en) * | 2015-11-24 | 2023-04-18 | 中国石油化工股份有限公司 | Underground heat collection temperature control energy-saving well completion integrated pipe column and process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20191124 |