CN103291244A - Method for compensating thermal energy of horizontal well mining heavy oil reservoirs in large power and subsection mode in pit - Google Patents
Method for compensating thermal energy of horizontal well mining heavy oil reservoirs in large power and subsection mode in pit Download PDFInfo
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- CN103291244A CN103291244A CN2013102497692A CN201310249769A CN103291244A CN 103291244 A CN103291244 A CN 103291244A CN 2013102497692 A CN2013102497692 A CN 2013102497692A CN 201310249769 A CN201310249769 A CN 201310249769A CN 103291244 A CN103291244 A CN 103291244A
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Abstract
The invention relates to a method of heavy oil thermal production in an oil field and underground coal bed thermal cracking gas production, in particular to a method for compensating thermal energy of horizontal well mining heavy oil reservoirs in a large power and subsection mode in a pit. According to the method, an oil well tubular column and an electric heater system are included. The oil well tubular column is composed of a well mouth device, a casing pipe, an oil pipe, a horizontal section sieve pipe and a packer. The electric heater system is composed of a ground part and an underground part. The ground part is composed of a power source control cabinet, a cable roller, a cable injection head, a cable conductor and a cable sealer. The underground part is a cable system composed of a mineral heating cable at the hot end and a mineral conductor cable at the cold end from bottom to top, so that injected steam of a straight well, an inclined well and a horizontal well of middle and deep heavy oil reservoirs are compensated, and the method can be used for crude oil production tracing heating of a horizontal section of the horizontal well and a fireflood oil production igniter.
Description
Technical field
The present invention relates to the method for a kind of oil-field thick-oil heating exploitation and the gas production of subterranean coal thermal cracking, be specifically related to the method for the high-power segmented compensation heat energy in a kind of horizontal wells heavy crude reservoir down-hole.
Background technology
There is the viscous crude resource of suitable reserves in China, and has the characteristics such as dark, that viscosity is big of burying, and the oil field mainly based on heat extraction by steam injection, is namely injected high temperature and high pressure steam at thickened oil recovery to the stratum.Its purpose one is to improve reservoir temperature, reduction viscosity of thickened oil, the 2nd, and can make formation pressure raise, increase oil-displacement capacity.Completion mode has straight well and horizontal well.
Mainly be the energy loss in the pit shaft in steam injection process, directly affect the thermal recovery effect, in order to reduce heat waste and the protective casing in the steam injection process, adopt insulated tubing usually.Insulated tubing generally adopts double-deck concentric tube, filling thermal insulation material in two-layer annular space, and will manage two ends and shut to guarantee excellent heat insulation property, because the application of instlated tubular, km is able to economic development with interior heavy crude reservoir.
Exploitation at middle deep fat is constantly used, conventional steam injection technology has seemed helpless, because, the steam that injects in the pit shaft is two phase flow, comprise saturated vapour (gas phase) and saturation water (liquid phase), increasing along with the steam injection degree of depth, along in the pit shaft flow process, heat constantly scatters and disappears to the stratum, water vapour pressure, temperature constantly changes, simultaneously its pressure, temperature also will satisfy the corresponding relation of saturated vapour and saturation pressure under greater than zero situation in the steam mass dryness fraction, just makes that also steam undergoes phase transition, the density of steam, parameters such as viscosity also increase thereupon, the heating exploitation deleterious.
Compare with conventional straight well, horizontal well has increased the contact area of pit shaft and oil reservoir, thereby can increase substantially the vapour amount of annotating, and increases the crude oil flow ability, improves oil well productivity.In the horizontal well steam injection, because the horizontal well horizontal segment is longer, generally more than 300 meters, the residing reservoir physical property in each position of horizontal segment also has nothing in common with each other, the heat that enters oil reservoir is also inhomogeneous along the horizontal segment distribution, and steam is not to enter oil reservoir equably along horizontal segment.Steam horizontal segment and is flowed friction loss is arranged in addition, and the pressure of steam is more and more littler, and steam becomes more and more littler along the mass flow of horizontal segment, simultaneously, steam is also more and more littler along the mass dryness fraction that horizontal segment flows, and steam constantly transmits heat to oil reservoir, and heating radius is also more and more littler.Add up according to the Liaohe Oil Field test data, the result shows: horizontal segment is employed uneven horizontal well and is accounted for 80% of total well number, horizontal segment is employed preferably, and the well section accounts for 1/3～1/2 of total well section, as 59 horizontal wells are put down in 84 1 shops of shutting out, when 2760t steam was injected in accumulation, the 1st～4 oil layer section had all obtained good heating, and the 5th oil layer section only heats and is subjected to imitate a part, 6th, 7 oil layer sections are also effectively heated, and the effective heat rate of whole horizontal segment is 51%.
Summary of the invention
At the problem of above-mentioned existence, the invention provides the method for the high-power segmented compensation heat energy in a kind of horizontal wells heavy crude reservoir down-hole.
The method of the high-power segmented compensation heat energy in a kind of horizontal wells heavy crude reservoir down-hole of the present invention, main points are to be made up of oil well pipe and electric heater system.Oil well pipe is made up of wellhead assembly, sleeve pipe, oil pipe, horizontal segment screen casing, packer, the electric heater system is made up of above ground portion, down-hole part, above ground portion is made up of electrical power control cabinet, cable drum, cable injection head, cable conductor and cable seal device, and the down-hole part is formed cable system by the mineral heating cable in hot junction and the mineral leader cable of cold junction from the bottom to top.
Working method of the present invention is achieved in that
The process that is used for horizontal well steam injection compensation heat is: at first be that high-power stainless steel heating cable is lowered to horizontal well, the hot junction of high-power stainless steel heating cable is to the middle part of horizontal segment, and finger tip is apart from 30 meters of artificials bottom of a well.The high dry saturated steam that injects enters down-hole oil tube by the four-way of wellhead assembly, enters horizontal segment by oil pipe; The circuit of heating is: electric current makes electric current in the mineral cable conductor is sent into high-power stainless steel heating cable by the control of electrical power control cabinet, and the stainless steel outer sleeve of lead and oil pipe form power circuit then.In galvanization, high-power stainless steel heating cable overcoat heating, surface temperature can reach 650 ℃, and the low mass dryness fraction steam of flowing through is carried out reheat, enters the finger tip direction of horizontal segment, generally injects about 2000 sides of steam equivalent, stewing well 3～7 days.Can trip out the mineral cable, oily down-hole pump production according to producing needs; Can be designed to also that steam injection string is parallel with the mineral cable to be lowered in the pit shaft, also can not trip out, use for the production of process companion heat, the segmented compensation heat can be coiled folding and unfolding mineral cable by the land cable cylinder, makes the mineral heating cable over against the bringing-up section of needs.
The invention has the beneficial effects as follows: the injection steam of straight well, inclined shaft and the horizontal well of dark heavy crude reservoir obtains thermal compensation, can also be applied to the heating process of the underground cracking cracking in coal seam or gasification in addition for production crude oil companion's heat and the fire flood igniter of horizontal well horizontal segment in making.
Description of drawings
Fig. 1 is structural representation of the present invention;
Among the figure: 1 electrical power control cabinet, 2 cable drums, 3 cable injection heads, 4 cable seal devices, 5 wellhead assemblies, 6 sleeve pipes, 7 oil pipes, 8 cable systems are formed.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
The method of the high-power segmented compensation heat energy in a kind of horizontal wells heavy crude reservoir down-hole of the present invention, formed by oil well pipe and electric heater system, oil well pipe is by wellhead assembly (5), sleeve pipe (6), oil pipe (7), the horizontal segment screen casing, packer is formed, the horizontal segment screen casing of oil well pipe is the pit shaft that creeps into certain-length along the oil reservoir horizontal direction, and by sleeve pipe (6) and ground UNICOM, and controlled by wellhead assembly (5), oil pipe (7) is positioned at sleeve pipe (6), extend to the root of top of oil horizon or horizontal segment screen casing, oil pipe (7) top and wellhead assembly (5) connect, and form the steam injection pipeline.
The electric heater system is made up of above ground portion, down-hole part.Above ground portion is by electrical power control cabinet (1), cable drum (2), cable injection head (3), mineral leader cable part and the cable seal device (4) of the cold junction of cable system (8) are formed, the down-hole part is partly formed cable system (8) by the mineral leader cable of the cold junction of the mineral heating cable part in the hot junction of cable system (8) and cable system (8) from the bottom to top, cable seal device (4) is positioned at wellhead assembly (5) upper bolt and links to each other, cable injection head (3) is positioned at cable seal device (4) top, 200 meters of the length of hot junction mineral heating cable, every meter power reaches 3 kilowatts, cold junction mineral leader cable is made more than 1600 meters according to reservoir depth, and to make external diameter with the mineral heating cable be 32 millimeter one whole isometrical dimensions, and it is coiled on cable drum.
The mineral heating cable is high-power stainless steel heating cable (MISS), it includes conductor thread core, insulating layer and stainless steel sheath pipe and forms, conductor thread core is linked by conductor wire core, transition and the heating core is formed, the conductor thread core outside is enclosed with the mineral insulation layer, is surrounded by the stainless steel sheath pipe in the insulating layer outside.Mineral heating cable heating principle is under the effect of kelvin effect and kindred effect, causes the pillar heating, by surface-type heat exchange method wall heat transferred is injected steam, makes steam obtain reheat.
Being used for the electrically-fired process of fireflood is: at first be the air injection pit shaft that high-power stainless steel heating cable is lowered to fire flood, the bottom of high-power stainless steel heating cable is at the middle part of oil reservoir, air enters down-hole oil tube by the four-way of ground air compressor by wellhead assembly, enters oil reservoir by oil pipe; The circuit of heating is: electric current is by the control of electrical power control cabinet, make electric current in the mineral cable conductor is sent into high-power stainless steel heating cable, produce kelvin effect and kindred effect, the heating of body of stainless steel overcoat, surface temperature can reach 650 ℃, with air heat to the 400 ℃ temperature of flowing through, the injection steam of straight well, inclined shaft and the horizontal well of dark heavy crude reservoir obtains thermal compensation, can accompany heat and fire flood igniter for the production crude oil of horizontal well horizontal segment in making.
Claims (1)
1. the method for the high-power segmented compensation heat energy in horizontal wells heavy crude reservoir down-hole, it is characterized in that being formed by oil well pipe and electric heater system, oil well pipe is by wellhead assembly, sleeve pipe, oil pipe, the horizontal segment screen casing, packer is formed, the electric heater system is by above ground portion, the down-hole part is formed, above ground portion is by electrical power control cabinet, cable drum, the cable injection head, cable conductor and cable seal device are formed, the down-hole part is formed cable system by the mineral heating cable in hot junction and the mineral leader cable of cold junction from the bottom to top, and working method of the present invention is achieved in that
The process that is used for horizontal well steam injection compensation heat is: at first be that high-power stainless steel heating cable is lowered to horizontal well, the hot junction of high-power stainless steel heating cable is to the middle part of horizontal segment, finger tip is apart from 30 meters of artificials bottom of a well, the high dry saturated steam that injects enters down-hole oil tube by the four-way of wellhead assembly, enters horizontal segment by oil pipe; The circuit of heating is: electric current is by the control of electrical power control cabinet, make electric current in the mineral cable conductor is sent into high-power stainless steel heating cable, the stainless steel outer sleeve of lead and oil pipe form power circuit then, in galvanization, high-power stainless steel heating cable overcoat heating, surface temperature can reach 650 ℃, the low mass dryness fraction steam of flowing through is carried out reheat, enter the finger tip direction of horizontal segment, about 2000 sides of general injection steam equivalent, stewing well 3～7 days can trip out the mineral cable, oily down-hole pump production according to producing needs; Can be designed to also that steam injection string is parallel with the mineral cable to be lowered in the pit shaft, also can not trip out, use for the production of process companion heat, the segmented compensation heat can be coiled folding and unfolding mineral cable by the land cable cylinder, makes the mineral heating cable over against the bringing-up section of needs.
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| CN103953321A (en) * | 2014-04-02 | 2014-07-30 | 中国石油天然气股份有限公司 | Deviated well in-situ combustion continuous-tube electric ignition tubular column and ignition method |
| CN104373096A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Electric and steam integrated steam injection system and steam injecting method thereof |
| CN104818972A (en) * | 2015-03-10 | 2015-08-05 | 中国海洋石油总公司 | Offshore thick oil heat injection and oil extraction pipe column and method |
| CN106058742A (en) * | 2016-07-28 | 2016-10-26 | 西安石竹能源科技有限公司 | Hard cable injection system |
| CN106194139A (en) * | 2016-07-08 | 2016-12-07 | 中国石油天然气股份有限公司 | The ignition method of combustion in situ |
| CN106337675A (en) * | 2016-11-21 | 2017-01-18 | 重庆科技学院 | Formation electric eddy current heating thick oil recovery system and the mining method |
| CN106351631A (en) * | 2016-08-23 | 2017-01-25 | 中国石油大学(北京) | Method for increasing dense oil single well daily output |
| CN106499377A (en) * | 2016-10-13 | 2017-03-15 | 中国石油天然气股份有限公司 | Electric ignition system |
| CN106499376A (en) * | 2017-01-03 | 2017-03-15 | 中国石油大学(华东) | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode |
| CN106593379A (en) * | 2016-12-21 | 2017-04-26 | 中国石油天然气股份有限公司 | Starting method for steam assisted gravity drainage of horizontal well and device |
| CN106640005A (en) * | 2016-12-20 | 2017-05-10 | 中国石油天然气股份有限公司 | Downhole electric heating horizontal well pipe column structure and oil layer heating method thereof |
| CN106884638A (en) * | 2017-04-14 | 2017-06-23 | 太原理工大学 | A kind of In Situ Heating method of coal bed gas heating exploitation |
| CN107558978A (en) * | 2017-08-28 | 2018-01-09 | 新疆国利衡清洁能源科技有限公司 | Thickened oil recovery system and method |
| CN108505977A (en) * | 2018-04-18 | 2018-09-07 | 吉林大学 | A method of utilizing sheath tube heater exploitation of gas hydrate |
| CN108952653A (en) * | 2018-07-19 | 2018-12-07 | 新疆博凯通益石油科技有限公司 | The thickened oil recovery method of electric heating assisted gravity oil drainage |
| CN109162689A (en) * | 2018-10-29 | 2019-01-08 | 中为(上海)能源技术有限公司 | Wellhead Control System and its operating method for coal underground gasifying technology |
| CN109989734A (en) * | 2019-05-16 | 2019-07-09 | 西南石油大学 | Underground Segmented heating device |
| CN111075417A (en) * | 2020-01-20 | 2020-04-28 | 中国石油大学(北京) | Reservoir exploitation device and method |
| CN111322045A (en) * | 2020-03-03 | 2020-06-23 | 西南石油大学 | Method for improving steam dryness at bottom of deep well heavy oil well by electric heating |
| CN112727405A (en) * | 2021-01-20 | 2021-04-30 | 王柱军 | Mining method for improving coal bed permeability of coal bed gas development well |
| CN112761585A (en) * | 2021-01-20 | 2021-05-07 | 王柱军 | Process method for improving yield of coal-bed gas well |
| CN112832727A (en) * | 2021-01-15 | 2021-05-25 | 栾云 | Underground ignition and oil displacement method using coiled tubing to carry electromagnetic wave heating system |
| CN113530507A (en) * | 2020-04-15 | 2021-10-22 | 中国石油天然气股份有限公司 | Method for improving dryness of underground steam |
| CN114622876A (en) * | 2020-12-11 | 2022-06-14 | 中国石油天然气股份有限公司 | Method for exploiting thickened oil by using electric heating to assist throughput of horizontal well |
| CN116839223A (en) * | 2023-09-01 | 2023-10-03 | 新疆智普科研服务有限公司 | Intelligent oil gas heating device and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694907A (en) * | 1986-02-21 | 1987-09-22 | Carbotek, Inc. | Thermally-enhanced oil recovery method and apparatus |
| CN2176429Y (en) * | 1993-10-19 | 1994-09-07 | 赵河 | Heater of oil well pump |
| CN202483541U (en) * | 2012-03-28 | 2012-10-10 | 周志斌 | Oil production system for heavy oil reservoir |
| CN102979493A (en) * | 2012-12-04 | 2013-03-20 | 尤尼斯油气技术（中国）有限公司 | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof |
-
2013
- 2013-06-21 CN CN2013102497692A patent/CN103291244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4694907A (en) * | 1986-02-21 | 1987-09-22 | Carbotek, Inc. | Thermally-enhanced oil recovery method and apparatus |
| CN2176429Y (en) * | 1993-10-19 | 1994-09-07 | 赵河 | Heater of oil well pump |
| CN202483541U (en) * | 2012-03-28 | 2012-10-10 | 周志斌 | Oil production system for heavy oil reservoir |
| CN102979493A (en) * | 2012-12-04 | 2013-03-20 | 尤尼斯油气技术（中国）有限公司 | Gas injection system for combustion of oil in-situ under super-critical pressure and gas injection method thereof |
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| CN103953321A (en) * | 2014-04-02 | 2014-07-30 | 中国石油天然气股份有限公司 | Deviated well in-situ combustion continuous-tube electric ignition tubular column and ignition method |
| CN103953321B (en) * | 2014-04-02 | 2016-08-31 | 中国石油天然气股份有限公司 | Inclined shaft combustion in situ continuous pipe electric ignition tubing string and ignition method |
| CN104373096A (en) * | 2014-10-29 | 2015-02-25 | 中国石油天然气股份有限公司 | Electric and steam integrated steam injection system and steam injecting method thereof |
| CN104818972A (en) * | 2015-03-10 | 2015-08-05 | 中国海洋石油总公司 | Offshore thick oil heat injection and oil extraction pipe column and method |
| CN106194139A (en) * | 2016-07-08 | 2016-12-07 | 中国石油天然气股份有限公司 | The ignition method of combustion in situ |
| CN106194139B (en) * | 2016-07-08 | 2018-10-16 | 中国石油天然气股份有限公司 | The ignition method of combustion in situ |
| CN106058742A (en) * | 2016-07-28 | 2016-10-26 | 西安石竹能源科技有限公司 | Hard cable injection system |
| CN106351631A (en) * | 2016-08-23 | 2017-01-25 | 中国石油大学(北京) | Method for increasing dense oil single well daily output |
| CN106499377A (en) * | 2016-10-13 | 2017-03-15 | 中国石油天然气股份有限公司 | Electric ignition system |
| CN106337675A (en) * | 2016-11-21 | 2017-01-18 | 重庆科技学院 | Formation electric eddy current heating thick oil recovery system and the mining method |
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| CN106593379B (en) * | 2016-12-21 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of horizontal well steam assisted gravity drainage starting method and device |
| CN106499376A (en) * | 2017-01-03 | 2017-03-15 | 中国石油大学(华东) | A kind of air injection auxiliary super-viscous oil underground cracking modifying process based on pit shaft heating mode |
| CN106884638A (en) * | 2017-04-14 | 2017-06-23 | 太原理工大学 | A kind of In Situ Heating method of coal bed gas heating exploitation |
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| CN108505977A (en) * | 2018-04-18 | 2018-09-07 | 吉林大学 | A method of utilizing sheath tube heater exploitation of gas hydrate |
| CN108505977B (en) * | 2018-04-18 | 2020-04-21 | 吉林大学 | Method for exploiting natural gas hydrate by using sleeve type heater |
| CN108952653A (en) * | 2018-07-19 | 2018-12-07 | 新疆博凯通益石油科技有限公司 | The thickened oil recovery method of electric heating assisted gravity oil drainage |
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| CN109989734A (en) * | 2019-05-16 | 2019-07-09 | 西南石油大学 | Underground Segmented heating device |
| CN111075417A (en) * | 2020-01-20 | 2020-04-28 | 中国石油大学(北京) | Reservoir exploitation device and method |
| CN111322045A (en) * | 2020-03-03 | 2020-06-23 | 西南石油大学 | Method for improving steam dryness at bottom of deep well heavy oil well by electric heating |
| CN113530507A (en) * | 2020-04-15 | 2021-10-22 | 中国石油天然气股份有限公司 | Method for improving dryness of underground steam |
| CN114622876A (en) * | 2020-12-11 | 2022-06-14 | 中国石油天然气股份有限公司 | Method for exploiting thickened oil by using electric heating to assist throughput of horizontal well |
| CN112832727A (en) * | 2021-01-15 | 2021-05-25 | 栾云 | Underground ignition and oil displacement method using coiled tubing to carry electromagnetic wave heating system |
| CN112761585A (en) * | 2021-01-20 | 2021-05-07 | 王柱军 | Process method for improving yield of coal-bed gas well |
| CN112727405A (en) * | 2021-01-20 | 2021-04-30 | 王柱军 | Mining method for improving coal bed permeability of coal bed gas development well |
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Application publication date: 20130911 |