CN105370253A - Method and equipment for realizing steam assisted gravity oil drainage thermal extraction in same well - Google Patents

Method and equipment for realizing steam assisted gravity oil drainage thermal extraction in same well Download PDF

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Publication number
CN105370253A
CN105370253A CN201510103214.6A CN201510103214A CN105370253A CN 105370253 A CN105370253 A CN 105370253A CN 201510103214 A CN201510103214 A CN 201510103214A CN 105370253 A CN105370253 A CN 105370253A
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China
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oil
well
string
sand
injection
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CN201510103214.6A
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Chinese (zh)
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徐文江
陈壁
谭先红
丘宗杰
景凤江
戈仁刚
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中国海洋石油总公司
中海石油(中国)有限公司
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Priority to CN201510103214.6A priority Critical patent/CN105370253A/en
Publication of CN105370253A publication Critical patent/CN105370253A/en

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Abstract

The invention relates to a method and equipment for realizing steam assisted gravity oil drainage thermal extraction in the same well. Equipment at least comprising a sand-control completion pipe string, a heat injection pipe column and an oil extraction production pipe column is arranged in one well with an upwarp tail part; steam flows in from the center of the heat injection pipe column, enters a heat injection cavity through an apertured tube, and enters a storage layer on the upper part of an oil deposit from the upwarp tail part of the well to reduce viscosity of crude oil; and under action of gravity, the viscosity-reduced crude oil flows to the bottom of the oil deposit, enters an oil extraction production cavity through a sand-control sieve tube, and is extracted from the ground through an oil extraction production channel under the lifting action of an electric submersible pump set of the oil extraction production pipe column. According to the method, steam assisted gravity oil drainage thermal extraction is realized in the same well, so that the characteristic of a few offshore oilfield development wells is adapted, oil well service efficiency and offshore thermal extraction development economic benefits are improved.

Description

一种同井蒸汽辅助重力泄油热采方法及其设备 An isotype steam assisted gravity drainage wells thermal recovery method and apparatus

技术领域 FIELD

[0001] 本发明涉及一种海上稠油油田开发领域中用于热力采油的同井蒸汽辅助重力泄油热采方法及其设备。 [0001] The present invention relates to the field of the development of heavy oil for offshore wells with thermal oil recovery steam assisted gravity drainage thermal recovery method and apparatus.

背景技术 Background technique

[0002] 热力采油是稠油油田开发的主导技术,而蒸汽辅助重力泄油技术又是国内外常用的热采技术之一。 [0002] thermal recovery of heavy oil field development is the dominant technology, and steam assisted gravity drainage technology at home and abroad is one of the commonly used thermal recovery techniques. 蒸汽辅助重力泄油技术是钻两口相互平行的水平井,两井之间相距5-15米,通过上部水平井注热,原油降粘后在重力作用下,流至下方的生产井,通过人工举升方式将降粘后的原油采出至井口。 Steam assisted gravity drainage technique is to drill two mutually parallel horizontal wells, two wells between 5-15 meters away, through the upper horizontal heat injection wells, oil viscosity reduction under the action of gravity, flows to the bottom of the production well, by manually lift for the recovery of crude oil viscosity reduction to a wellhead.

[0003] 由于海上油田开发井集中在采油平台上,同时钻井成本较高,故开发井数与陆地油田相比较少,因此发明利用一口井实现蒸汽辅助重力泄油采油方式,对于降低热采开发成本很有利。 [0003] Since the field development well offshore oil platform focused on, while the high cost of drilling, and therefore the number of development wells onshore and small compared, thus the use of the invention to achieve a well steam assisted gravity drainage oil recovery schemes, development for reducing thermal recovery cost is very favorable.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种同井蒸汽辅助重力泄油热采方法,在同一口井中实现蒸汽辅助重力泄油热采,适应海上油田开发井少的特点,提高油井使用效率和海上热采开发经济效益。 [0004] The object of the present invention is to provide one of one and the same thermal recovery wells steam assisted gravity drainage method in the same well, steam assisted gravity drainage thermal recovery, less adaptation field development well offshore, Improving the efficiency of oil wells offshore and thermal recovery economic development.

[0005] 本发明所述的同井蒸汽辅助重力泄油热采设备:在一口尾部上翘的井中,设置有至少包括防砂完井管柱、注热管柱和采油生产管柱的设备;所述的防砂完井管柱由防砂筛管、盲管、生产套管串联组成,生产套管与防砂筛管通过防砂封隔器与座封挂接相连;所述的注热管柱由打孔管、油管、井下安全阀串联组成,井下安全阀连接有安全阀液控管线,通过地面液压控制进行开关操作;所述的采油生产管柱与注热管柱为同心结构,采油生产管柱由Y接头与电潜栗机组连接,电潜栗机组通过电缆进行供电;防砂完井管柱的盲管与注热管柱之间通过隔离封隔器座封连接,隔离封隔器将注热管柱与防砂完井管柱的环形空间分隔成两部分,注热腔和采油生产腔;注热管柱与采油生产管柱之间形成的环形空间为采油生产通道。 [0005] with the steam assisted gravity drainage wells thermal recovery apparatus according to the present invention: in an upturned tail well, provided with a completion string comprises at least sand, heat injection and oil production tubing string device; the the sand control completion string by the sand control screen, the blind tube, in series production casing, production casing and sand through the sand control screen packer sealing seat hook connected; said heat pipe string from the perforated injection pipes, tubing, downhole safety valve in series, the downhole safety valve is connected to the liquid valve controls line switching operation performed by the hydraulic pressure control surface; the heat injection and oil production tubing string in a concentric structure, oil production tubing by a linker Y Li unit electrically connected to the submersible electric submersible unit is powered via a cable Li; sealing connection between the seat isolation packer completion string blind sand injection tube heat pipe string, the isolation packer heat injection string and sand End the well string annular space divided into two portions, the heat injection and oil production chamber cavity; an annular space formed between the heat injection and oil production tubing string for oil production channel.

[0006] 本发明所述的同井蒸汽辅助重力泄油热采方法是:蒸汽通过注热管柱的中心流入,通过打孔管进入注热腔,蒸汽经井上翘的尾部进入油藏上部储层降粘原油;降粘后的原油在重力作用下流向油藏底部,通过防砂筛管进入采油生产腔,在采油生产管柱的电潜栗机组举升作用下,通过采油生产通道采出地面。 [0006] with the steam assisted gravity drainage wells thermal recovery method according to the present invention are: injection of steam through the center of the heat flows into the column, heat injection into the chamber through perforated tubes, wells upturned tail steam through the reservoir into the upper portion of the reservoir oil viscosity reduction; viscosity reduction of crude oil flowing to the base of the reservoir under gravity, into the oil chamber through the sand control screen production, in oil production tubing string lifting action of the electrostatic latent Li units, produced by oil recovery passage ground.

[0007] 本发明所述的同井蒸汽辅助重力泄油热采方法,在同一口井中实现蒸汽辅助重力泄油热采,适应海上油田开发井少的特点,提高油井使用效率和海上热采开发经济效益。 [0007] with the steam assisted gravity drainage wells thermal recovery method according to the present invention, steam assisted gravity drainage achieve thermal recovery in the same well, little adaptation field development well offshore, Improving the efficiency and offshore oil wells developed thermal recovery economic benefits.

附图说明 BRIEF DESCRIPTION

[0008] 图1同井蒸汽辅助重力泄油热采设备设置示意图。 [0008] FIG. 1 is provided with well steam assisted gravity drainage schematic thermal recovery device.

图2同井蒸汽辅助重力泄油热采方法示意图。 FIG 2 with steam assisted gravity drainage wells thermal method, Fig.

[0009] 其中:1防砂完井管柱、11防砂筛管、12盲管、13生产套管; [0009] wherein: a completion string sand, sand screen 11, blind tube 12, production casing 13;

[0010] 2注热管柱、21打孔管、22油管、23井下安全阀、24安全阀液控管线; [0010] 2 Note heat column, perforated pipe 21, pipe 22, the downhole safety valve 23, valve 24 Controls fluid line;

[0011] 3防砂封隔器、4隔离分隔器; [0011] The sand packer 3, spacer 4 spacer;

[0012] 5采油生产管柱、51Y接头、52电潜栗机组、53电缆; [0012] 5 oil production tubing, connectors 51Y, Li electric submersible unit 52, the cable 53;

[0013] 6油藏上部储层;7油藏底部; [0013] Reservoir upper reservoir 6; 7 base of the reservoir;

[0014] a注热腔、b采油生产腔、c采油生产通道; [0014] a heat injection chamber, b oil production chamber, c oil production channel;

具体实施方式 Detailed ways

[0015] 本发明所述的同井蒸汽辅助重力泄油热采方法,如图1所示,在一口尾部上翘的井中,设置有至少包括防砂完井管柱1、注热管柱2和采油生产管柱5的设备。 [0015] with the steam assisted gravity drainage wells thermal recovery method according to the present invention, shown in Figure 1, in an upturned tail well, provided with a sand control completion string comprising at least 1, column 2 and the heat injection oil 5 production tubing equipment. 所述的防砂完井管柱1由防砂筛管11、盲管12、生产套管13串联组成,生产套管与防砂筛管通过防砂封隔器3与座封挂接相连;所述的注热管柱2由打孔管21、油管22、井下安全阀23串联组成,井下安全阀连接有安全阀液控管线24,通过地面液压控制进行开关操作;所述的采油生产管柱5与注热管柱2为同心结构,采油生产管柱由Y接头51与电潜栗机组52连接,电潜栗机组通过电缆53进行供电;防砂完井管柱1的盲管12与注热管柱2之间通过隔离封隔器4座封连接,隔离封隔器将注热管柱2与防砂完井管柱的环形空间分隔成两部分,为注热腔a和采油生产腔b ;注热管柱2与采油生产管柱5之间形成的环形空间为采油生产通道c。 The injection; said completion string 1 by the sand sand control screen 11, the blind tube 12, the sleeve 13 in series production, the production casing and sand through the sand control screen packer closure hook is connected to the seat 3 column 2 by a perforated heat pipe 21, tubing 22, 23 in series downhole safety valve, a safety valve connected to the downhole safety valve controls fluid line 24, a switching operation performed by the hydraulic pressure control ground; said injection and oil production tubing string 5 column 2 is concentric heat, oil production tubing 51 is connected by a Y connector unit 52 and an electrostatic latent chestnut, chestnut electric submersible unit 53 is powered through the cable; cul sand between the completion string 12 of column 2 and the heat injection 4 are connected by sealing isolation packer, the isolation packer pipe string 2 and the heat injection sand control completion string annular space into two portions, a cavity for the heat injection and oil production chamber B; heat injection and oil production tubing string 2 forming an annular space between the production tubing 5 for the production of oil passage c.

[0016] 本发明所述的同井蒸汽辅助重力泄油热采方法是:蒸汽通过注热管柱2的中心流入,通过打孔管21进入注热腔a,蒸汽经井上翘的尾部进入油藏上部储层6降粘原油;降粘后的原油在重力作用下流向油藏底部7,通过防砂筛管11进入采油生产腔b,在采油生产管柱5的电潜栗机组52举升作用下,通过采油生产通道c采出地面。 [0016] with the steam assisted gravity drainage wells thermal recovery method according to the present invention are: injection of steam through the central column 2 of the heat flows through the perforated tube 21 into the heat injection chamber a, upturned tail steam through the well into the reservoir Viscosity upper oil reservoir 6; viscosity reduction of crude oil flowing to the base of the reservoir 7 under gravity, through the sand screen into the oil production chamber b 11, in oil production tubing string electrostatic latent Li effect lifting units 5 52 , c by oil production recovery passage ground. 如图2所示。 as shown in picture 2.

Claims (2)

1.一种同井蒸汽辅助重力泄油热采设备,其特征在于:在一口尾部上翘的井中,设置有至少包括防砂完井管柱、注热管柱和采油生产管柱的设备;所述的防砂完井管柱由防砂筛管、盲管、生产套管串联组成,生产套管与防砂筛管通过防砂封隔器与座封挂接相连;所述的注热管柱由打孔管、油管、井下安全阀串联组成,井下安全阀连接有安全阀液控管线,通过地面液压控制进行开关操作;所述的采油生产管柱与注热管柱为同心结构,采油生产管柱由Y接头与电潜栗机组连接,电潜栗机组通过电缆进行供电;防砂完井管柱的盲管与注热管柱之间通过隔离封隔器座封连接,隔离封隔器将注热管柱与防砂完井管柱的环形空间分隔成两部分,注热腔和采油生产腔;注热管柱与采油生产管柱之间形成的环形空间为采油生产通道。 A well with hot steam assisted gravity drainage collection apparatus, comprising: a well in an upturned tail, is provided with a completion string comprises at least sand, heat injection and oil production tubing string device; the the sand control completion string by the sand control screen, the blind tube, in series production casing, production casing and sand through the sand control screen packer sealing seat hook connected; said heat pipe string from the perforated injection pipes, tubing, downhole safety valve in series, the downhole safety valve is connected to the liquid valve controls line switching operation performed by the hydraulic pressure control surface; the heat injection and oil production tubing string in a concentric structure, oil production tubing by a linker Y Li unit electrically connected to the submersible electric submersible unit is powered via a cable Li; sealing connection between the seat isolation packer completion string blind sand injection tube heat pipe string, the isolation packer heat injection string and sand End the well string annular space divided into two portions, the heat injection and oil production chamber cavity; an annular space formed between the heat injection and oil production tubing string for oil production channel.
2.一种同井蒸汽辅助重力泄油热采方法,其特征在于:在一口尾部上翘的井中,采用权利要求1所述的同井蒸汽辅助重力泄油热采设备;蒸汽通过注热管柱的中心流入,通过打孔管进入注热腔,蒸汽经井上翘的尾部进入油藏上部储层降粘原油;降粘后的原油在重力作用下流向油藏底部,通过防砂筛管进入采油生产腔,在采油生产管柱的电潜栗机组举升作用下,通过采油生产通道采出地面。 A well with steam assisted gravity drainage thermal recovery method, comprising: in an upturned tail well, using the same wells as claimed in claim steam assisted gravity drainage thermal recovery apparatus of claim 1; by injection of steam heat pipe string central inflow, into the chamber through the perforated pipe heat injection, tail upturned steam through wells into the upper oil reservoir in the viscosity reduction; viscosity reduction of crude oil flowing to the base of the reservoir under gravity, into the oil produced by the sand control screen chamber, in oil production tubing string lifting action of the electrostatic latent Li units, produced by oil recovery passage ground.
CN201510103214.6A 2015-03-10 2015-03-10 Method and equipment for realizing steam assisted gravity oil drainage thermal extraction in same well CN105370253A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106869884A (en) * 2017-03-13 2017-06-20 中国海洋石油总公司 Method for optimizing longitudinal position of injection and production well based on steam-assisted gravity drainage of two horizontal wells

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CN201474673U (en) * 2009-08-19 2010-05-19 中国石油天然气股份有限公司 Oil-producing pipe column for sectional water control of horizontal well
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