CN103321622A - Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof - Google Patents
Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof Download PDFInfo
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- CN103321622A CN103321622A CN2013102755340A CN201310275534A CN103321622A CN 103321622 A CN103321622 A CN 103321622A CN 2013102755340 A CN2013102755340 A CN 2013102755340A CN 201310275534 A CN201310275534 A CN 201310275534A CN 103321622 A CN103321622 A CN 103321622A
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- pipe
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- 239000004576 sand Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000000605 extraction Methods 0.000 title abstract description 7
- 239000007924 injection Substances 0.000 title abstract description 4
- 238000002347 injection Methods 0.000 title abstract description 4
- 239000003921 oil Substances 0.000 claims abstract description 76
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 239000003129 oil well Substances 0.000 claims abstract description 22
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 21
- 239000000295 fuel oil Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 24
- 238000011084 recovery Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 16
- 241000251468 Actinopterygii Species 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 210000002445 nipple Anatomy 0.000 claims description 5
- 238000004062 sedimentation Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000010924 continuous production Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000001965 increasing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 2
- 230000007115 recruitment Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/129—Adaptations of down-hole pump systems powered by fluid supplied from outside the borehole
Abstract
The invention provides a sand draining and oil extracting method in a manner of integrating injection and extraction for a thermal producing well and a device thereof. The method includes that in the process of steam injection, high-temperature and high-pressure steam passes a wellhead device with thermal compensation effect, enters a downhole power fluid tube and a downhole mixing fluid tube, enters a downhole water jetting pump working barrel connected with the downhole power fluid tube and the downhole mixing fluid tube, enters a heavy or super-heavy oil reservoir, and steam injection operation of the oil well is realized. The oil extraction is performed after the steam injection is completed. A water jetting pump core is delivered to a downhole water jetting pump barrel through power fluid to enable the water jetting pump to work, and is lifted to the ground continuously via annular space between the downhole power fluid tube and the downhole mixing fluid tube. The sealed part in the water jetting pump barrel adopts screw seal or metal seal. By the aid of the method and the device, the oil art for heavy oil, super-heavy oil and sandy oil deposit is simplified, well maintenance required due to throughput period production of the thermal producing well is reduced, and producing cost is also reduced.
Description
Technical field
The present invention relates to a kind of oil extraction method and device thereof, method and the device thereof of especially a kind of viscous crude, super-heavy oil deposit oil extraction.
Background technology
Along with deepening continuously of oil field development, increasing low-grade reserves are employed gradually.Wherein, the shared proportion of viscous crude and super-heavy oil deposit is increasing.Because be subjected to the impact of oil reservoir cementation method, reservoir temperature, viscosity of crude, viscous crude, super-heavy oil deposit shake out seriously, and mobile non-constant, and be even not mobile.In order to improve the development effectiveness of viscous crude, super-heavy oil deposit, the overwhelming majority viscous crude, super heavy oil wells take behind the sand control oil recovery by heating method of steam soak to exploit, at first inject the high-temperature water vapor of some when namely bringing in the oil reservoir, utilize its entrained heat energy that viscous crude, super viscous crude in the oil reservoir are heated, its temperature is raise, reduced viscosity, the mobile enhancing.And then adopt wellbore lift technique that crude oil is lifted to ground.There are following deficiency in viscous crude, the ultra-thick oil thermal power oil production method taked at present:
1, when oil well needs steam injection, workover treatment on the needs trips out first the flow string in the well, then is lowered to annotate the steam injection of steam tubing string.Operation troop moves in the steam injection process.After the oil well steam injection finishes, need again go up workover treatment, trip out first the interior steam injection tubing string of well, then be lowered to the flow string production of recovering the oil.So each production cycle of handling up of oil well needs twice workover treatment.
2, workover treatment has not only increased the cost of production of oil well, rate when having reduced oil well production, and simultaneously, the fracturing fluid in the workover treatment process has reduced the temperature of near wellbore zone, has caused cold damage to oil well.
3, be subjected in process of production the impact of viscosity of crude owing to viscous crude, super heavy oil wells, the resistance of pit shaft mill is larger, and most of well need to be taked the viscosity reducing measure, increases management difficulty and the overhead cost of oil well.
4, increased the resistance of stratum liquid inflow pit shaft after the sand control, reduced oil well output, producing cost is high, and the sand control life is short, the wellbore tool complex structure, and the possibility that the pit shaft accident occurs increases.Existing SAND DISCHARGING AND OIL PRODUCTING TECHNOLOGY can not satisfy the requirement of oil well steam injection condition.
Comprehensive above-mentioned reason, present production practice caused viscous crude, the workover treatment of super viscous crude producing well frequent, improved the cost of winning of viscous crude, super-heavy oil deposit, directly affected viscous crude, the exploitation effect of super-heavy oil deposit and the economic benefit of oil field development.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of oil recovery by heating well to annotate and adopts integrated sand-discharge oil production method, and it can make the exploitation of viscous crude, super-heavy oil deposit realize the integrated production of steam injection, oil recovery two procedures.
Another technical problem to be solved by this invention provides a kind of device of realizing said method.
The present invention realizes like this, a kind of oil recovery by heating well is annotated and is adopted integrated sand-discharge oil production method, described method is, in the steam injection process, the wellhead assembly of high-temperature high-pressure steam through the thermal compensation effect is arranged enters well dynamic liquid pipe and down-hole mixed liquor pipe, and then warp enters viscous crude or super Heavy Oil Reservoir with the downhole hydraulic water jet pump seating nipple that well dynamic liquid pipe is connected with down-hole mixed liquor pipe, the steam injection operation of realization oil well; The production of recovering the oil after steam injection is finished, with power fluid hydraulic jet pump pump core is delivered to the hydraulic jet pump pump barrel of down-hole and made the jetting pump work, by the jetting pump intake down to oil reservoir lower bound or sand control top of fish top oil well liquid-producing is sucked, and the annular space between well dynamic liquid pipe, down-hole mixed liquor pipe is lifted to ground continuously, thread seal or metal sealing are adopted in sealing position in the jetting pump barrel, can adapt to the conditional request of oil well steam injection; After the production of recovering the oil is finished, trip out hydraulic jet pump pump core and standing valve with power fluid, enter the next one and handle up the cycle, realize annotating and adopt integrated continuous production.
The cross-sectional area of down-hole mixed liquor pipe runner is little, thereby makes the mixed liquor that contains sand upwards flow to ground by wellhead assembly to be far longer than the shake out flow velocity of settling rate of oil reservoir, prevents the oil reservoir sedimentation of shaking out.
A kind of oil recovery by heating well of the present invention is annotated and adopted integrated sand discharge oil-producing device is to realize like this, it has the wellhead assembly that possesses the thermal compensation effect, the runner of power fluid import in wellhead assembly on the wellhead assembly is connected with well dynamic liquid pipe in the wellbore casing, the runner of mixture export on the wellhead assembly in wellhead assembly is connected with down-hole mixed liquor pipe in the pit shaft, well dynamic liquid pipe and down-hole mixed liquor pipe with hydraulic jet pump be connected, be connected with one way valve below the hydraulic jet pump, thermal packer is arranged below the one way valve, and the jetting Pump Suction Nozzle is positioned at the top of oil reservoir lower bound or sand control top of fish; At the described wellhead assembly that possesses the thermal compensation effect two way seal device and compensating pipe are arranged; Thread seal or metal sealing are adopted in sealing position in the jetting pump barrel.
Adopt above-mentioned oil recovery by heating well to annotate and adopt integrated sand-discharge oil production method and device thereof, high-temperature high-pressure steam enters well dynamic liquid pipe and down-hole mixed liquor pipe through wellhead assembly, and then enters viscous crude, super Heavy Oil Reservoir through downhole hydraulic water jet pump seating nipple.One way valve and packer prevent that high-temperature high-pressure steam from entering the sleeve pipe annular space, to reduce thermal loss.Because wellhead assembly has the thermal compensation effect to the thermal dilation difference of well dynamic liquid pipe and down-hole mixed liquor pipe, can automatically eliminate the stress that well dynamic liquid pipe and down-hole mixed liquor pipe expanded by heating produce.The jetting pump barrel can satisfy the condition of the HTHP in the steam injection process, and therefore, the method and device thereof can guarantee the normal operation of viscous crude, super heavy oil wells steam injection technique.After steam injection process is finished, send into downhole hydraulic water jet pump pump core in the down-hole pump seating nipple and drive its work with power fluid, hydraulic jet pump will comprise in the formation fluid suction pump of crude oil, sand production in oil, water etc., and mix with power fluid and to form mixed liquor, mixed liquor is upwards delivered to well head through down-hole mixed liquor pipe, discharge ground, finish the oil extraction process.Because one way valve allows the liquid in the casing annulus to flow to the below of packer, therefore, can detect the producing fluid level of oil well in oil recovery process.After oil recovery process is finished, trip out downhole hydraulic water jet pump pump core with power fluid, change the next steam process of annotating over to.This oil production method and device have been simplified the oil production technology of viscous crude, super viscous crude, sand production petroleum reservoir, have reduced the oil recovery by heating well because the cycle that turns of handling up is produced necessary workover treatment, have reduced producing cost.Simultaneously, the sand discharge function of the method has increased the permeability of near wellbore zone oil reservoir, has increased substantially oil well output, has improved the overall efficiency of oil extraction, has also solved the viscosity reducing problem in viscous crude, the super heavy oil wells manufacturing process.
Description of drawings
Fig. 1 is the schematic diagram that the present invention's oil recovery by heating well is annotated a kind of embodiment that adopts integrated sand discharge oil-producing device.
Fig. 2 is that the present invention's oil recovery by heating well notes are adopted the schematic diagram that integrated sand discharge oil-producing device is used for the embodiment of sand proof well.
Fig. 3 is the schematic diagram that the present invention's notes are adopted the jetting pump configuration of the power fluid direct circulation mode in the integrated sand discharge oil-producing device.
Fig. 4 is the schematic diagram that the present invention's notes are adopted the jetting pump configuration of the anti-endless form of power fluid in the integrated sand discharge oil-producing device.
Fig. 5 is the structure principle chart of the thermal compensation part of the wellhead assembly among the present invention.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present invention.
As shown in drawings, a kind of oil recovery by heating well of the present invention is annotated and is adopted integrated sand discharge oil-producing device, it has the wellhead assembly 1 that possesses the thermal compensation effect, the runner of power fluid import 3 in wellhead assembly on the wellhead assembly is connected with well dynamic liquid pipe 7 in the wellbore casing 5, the runner of mixture export 9 in wellhead assembly on the wellhead assembly is connected with down-hole mixed liquor pipe 6 in the pit shaft, well dynamic liquid pipe and down-hole mixed liquor pipe with hydraulic jet pump 10 be connected, be connected with one way valve 11 below the hydraulic jet pump 10, thermal packer 12 is arranged below the one way valve, and jetting Pump Suction Nozzle 13 is positioned at the top of oil reservoir lower bound or sand control top of fish 14; At the described wellhead assembly 1 that possesses the thermal compensation effect compensating pipe 2.1 is arranged, the upper end of well dynamic liquid pipe 7 is positioned at compensating pipe, and well dynamic liquid tube outside is equipped with two way seal device 2.2; Thread seal or metal sealing are adopted in sealing position in the jetting pump barrel.
The mixed liquor that contains sand in the mixed liquor pipe of down-hole upwards flow to ground by wellhead assembly with the flow velocity that is far longer than oil reservoir sand settling rate, can prevent the sedimentation of oil reservoir sand.Jetting Pump Suction Nozzle 13 is positioned at oil reservoir 8 lower bounds; For the oil well that sand preventing tool is arranged in the pit shaft, the jetting pump intake is positioned at the top of sand control top of fish 14, can prevent that like this sand from burying oil reservoir.
Fig. 1 represented a kind of oil well not the oil recovery by heating well during sand control annotate and adopt integrated sand discharge oil-producing device.
Fig. 2 has represented that the oil recovery by heating well after a kind of sand control is annotated and has adopted integrated sand discharge oil-producing device.
Fig. 1, oil recovery by heating well shown in Figure 2 are annotated and are adopted integrated sand discharge oil-producing device in oil recovery process, also can adopt the anti-circulation mode of production, namely send into power fluid from the mixed liquor pipe of down-hole, and send mixed liquor from well dynamic liquid pipe.
When oil well need to recover the oil, usable power liquid by wellhead assembly with hydraulic jet pump pump core through well dynamic liquid pipe, deliver to the operating position in the hydraulic jet pump pump barrel.
In Fig. 3, the first sealing ring A1 is used for the sealing between power fluid and the production fluid.The second sealing ring B1 is used for the sealing between production fluid and the mixed liquor, and the first pump core print seat C1 is used for support hydraulic jet pump pump core.Power fluid enters pump core runner D1 from the first power fluid and enters in the hydraulic jet pump, mixed liquor flows out from mixture export E1, below the pump in-core of hydraulic jet pump has the first nozzle 6.1, the first nozzle, be the first trunnion 6.2, in the first formation fluid entrance F1 of pump housing bottom the first one way valve 6.3 be installed.
In Fig. 4, the 3rd sealing ring A2 is used for the sealing between production fluid and the mixed liquor.The 4th sealing ring B2 is used for the sealing between power fluid and the production fluid, and the second pump core print seat C2 is used for support hydraulic jet pump pump core.Power fluid enters pump core runner E2 from the second power fluid and enters in the hydraulic jet pump, and mixed liquor flows out from mixture export D2.Below the pump in-core of hydraulic jet pump has second nozzle 8.1, second nozzle, be aux. venturi 8.2, in the second formation fluid entrance F2 of pump housing bottom the second one way valve 8.3 be installed.
High-temperature high-pressure steam is provided by the ground injection boiler.
The required high voltage power liquid of Downhole jetting pump work is provided by the Surface power drive liquid pump, and power fluid adopts oil reservoir output water, can be recycled behind plain sedimentation.
The oil reservoir production fluid generally can be directly outer defeated.Higher when the production fluid sand content, cause and defeated at need desanding device can be set near wellhead assembly outward, outer defeated again after the desanding.
Little the referring to of cross-sectional area of down-hole mixed liquor pipe runner, the cross-sectional area of down-hole mixed liquor pipe runner are less than the cross-sectional area of well dynamic liquid pipe runner, and be little of the mixed liquor that contains sand is upwards flowed to be far longer than the flow velocity that contains the sand settling rate.
As shown in Figure 5, compensating pipe 2.1 is arranged on the wellhead assembly among the present invention, the upper end of well dynamic liquid pipe 7 is positioned at compensating pipe, and well dynamic liquid tube outside is equipped with two way seal device 2.2.The thermal compensation effect is achieved in that in the oil well stream-injection process, down-hole mixed liquor pipe in the pit shaft, the length of well dynamic liquid pipe can increase along with the rising of temperature in the pit shaft, because coefficient of thermal expansion is different, the recruitment of the length of well dynamic liquid pipe is greater than the recruitment of down-hole mixed liquor pipe.At this moment, well dynamic liquid pipe can freely extend, and its upper end can freely enter compensating pipe.The two way seal device can be under the elongation of well dynamic liquid pipe, retraction and inactive state, realizes sealing between mixed liquor and the air and the sealing between power fluid and the air, and then reaches the purpose of the sealing between down-hole mixed liquor pipe and the well dynamic liquid pipe.
Thread seal or metal sealing are adopted in sealing position in the jetting pump barrel, in the high voltage bearing while, can satisfy resistant to elevated temperatures requirement.And rubber ring is adopted in original sealing, can't satisfy above-mentioned requirements.
In the bottom of wellhead assembly sleeve valve 4 is arranged.
The aufbauprinciple of downhole hydraulic water jet pump seating nipple, jetting pump barrel, hydraulic jet pump pump core, standing valve etc. is identical on a kind of sand-discharge oil production method of CN1274797 and the device thereof with existing China Patent Publication No., no longer describes in detail.
Claims (3)
1. an oil recovery by heating well is annotated and is adopted integrated sand-discharge oil production method, it is characterized in that, described method is, in the steam injection process, the wellhead assembly of high-temperature high-pressure steam through the thermal compensation effect is arranged enters well dynamic liquid pipe and down-hole mixed liquor pipe, and then warp enters viscous crude or super Heavy Oil Reservoir with the downhole hydraulic water jet pump seating nipple that well dynamic liquid pipe is connected with down-hole mixed liquor pipe, the steam injection operation of realization oil well; The production of recovering the oil after steam injection is finished, with power fluid hydraulic jet pump pump core is delivered to the hydraulic jet pump pump barrel of down-hole and made the jetting pump work, by the jetting pump intake down to oil reservoir lower bound or sand control top of fish top oil well liquid-producing is sucked, and the annular space between well dynamic liquid pipe, down-hole mixed liquor pipe is lifted to ground continuously, thread seal or metal sealing are adopted in sealing position in the jetting pump barrel, can adapt to the conditional request of oil well steam injection; After the production of recovering the oil is finished, trip out hydraulic jet pump pump core and standing valve with power fluid, enter the next one and handle up the cycle, realize annotating and adopt integrated continuous production.
2. oil recovery by heating well as claimed in claim 1 is annotated and is adopted integrated sand-discharge oil production method, it is characterized in that, the cross-sectional area of down-hole mixed liquor pipe runner is little, thereby make the mixed liquor that contains sand upwards flow to ground by wellhead assembly to be far longer than the shake out flow velocity of settling rate of oil reservoir, prevent the oil reservoir sedimentation of shaking out.
3. device of realizing the described method of claim 1, it is characterized in that, it has the wellhead assembly (1) that possesses the thermal compensation effect, the runner of power fluid import (3) in wellhead assembly on the wellhead assembly is connected with the well dynamic liquid pipe (7) in the wellbore casing (5), the runner of mixture export on the wellhead assembly (9) in wellhead assembly is connected with down-hole mixed liquor pipe (6) in the pit shaft, well dynamic liquid pipe and down-hole mixed liquor pipe with hydraulic jet pump (10) be connected, be connected with one way valve (11) below the hydraulic jet pump (10), thermal packer (12) is arranged below the one way valve, and jetting Pump Suction Nozzle (13) is positioned at the top of oil reservoir lower bound or sand control top of fish (14); At the described wellhead assembly (1) that possesses the thermal compensation effect compensating pipe (2.1) is arranged, the upper end of well dynamic liquid pipe (7) is positioned at compensating pipe, and well dynamic liquid tube outside is equipped with two way seal device (2.2); Thread seal or metal sealing are adopted in sealing position in the jetting pump barrel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102755340A CN103321622A (en) | 2013-07-03 | 2013-07-03 | Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof |
| PCT/CN2014/082574 WO2015000447A1 (en) | 2013-07-03 | 2014-07-21 | Injection-extraction integrated sand-discharging oil extraction method for a thermal recovery and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102755340A CN103321622A (en) | 2013-07-03 | 2013-07-03 | Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103321622A true CN103321622A (en) | 2013-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013102755340A Pending CN103321622A (en) | 2013-07-03 | 2013-07-03 | Sand draining and oil extracting method in manner of integrating injection and extraction for thermal producing well and device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103321622A (en) |
| WO (1) | WO2015000447A1 (en) |
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| WO2015000447A1 (en) * | 2013-07-03 | 2015-01-08 | 胜利油田隆迪石油技术(装备)有限责任公司 | Injection-extraction integrated sand-discharging oil extraction method for a thermal recovery and device thereof |
| CN106837276A (en) * | 2017-02-15 | 2017-06-13 | 轮台县胜利无杆泵采油技术服务有限公司 | A kind of jet pump steam note adopts one extracting device of oil and method |
| CN114562235A (en) * | 2022-02-07 | 2022-05-31 | 中海油能源发展股份有限公司 | Offshore oilfield heavy oil well steam injection and jet flow integrated process system and production method thereof |
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| CN115197744B (en) * | 2022-06-28 | 2023-09-19 | 中国矿业大学 | System for removing water and sand scraps from ground thickened oil and oil-water separation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106837276A (en) * | 2017-02-15 | 2017-06-13 | 轮台县胜利无杆泵采油技术服务有限公司 | A kind of jet pump steam note adopts one extracting device of oil and method |
| CN106837276B (en) * | 2017-02-15 | 2019-04-05 | 新疆胜利无杆泵采油技术有限公司 | A kind of jet pump steam note adopts integrated extracting device of oil |
| CN114562235A (en) * | 2022-02-07 | 2022-05-31 | 中海油能源发展股份有限公司 | Offshore oilfield heavy oil well steam injection and jet flow integrated process system and production method thereof |
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| WO2015000447A1 (en) | 2015-01-08 |
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