CN101328798A - Method for extracting thick oil - Google Patents

Method for extracting thick oil Download PDF

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CN101328798A
CN101328798A CN 200810117487 CN200810117487A CN101328798A CN 101328798 A CN101328798 A CN 101328798A CN 200810117487 CN200810117487 CN 200810117487 CN 200810117487 A CN200810117487 A CN 200810117487A CN 101328798 A CN101328798 A CN 101328798A
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oil
viscosity
production
reducer
method
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CN 200810117487
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CN101328798B (en )
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付亚荣
吕德福
孙学峰
孙玉民
尤冬青
洪 常
张庚祥
李冬青
炜 田
胡书宝
范 董
蔡远红
郝玉军
郭小玉
马永忠
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中国石油天然气股份有限公司
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Abstract

The invention provides a heavy oil cold production method applied to the production of oilfield heavy oil reservoirs at normal temperature and pressure. The method is characterized by comprising: a. a step of preparing water-soluble viscosity reducer I; b. a step of preparing viscosity reducer II; c. a step of preparing viscosity reducer III; d. a step of squeezing the water-soluble viscosity reducer I into oil reservoirs; and e. a step of using an oil pumping unit or screw pump lifting equipment to lift produced well fluid and adding the pitshaft viscosity reducer II or the pitshaft viscosity reducer III from an annular space between an oil pipe and an casing pipe of an oil well according to the different viscosity of produced fluid crude oil. The method has the advantages that: a chemical method is adopted to reduce the viscosity of heavy oil in the oil reservoirs and well fluid inside pitshafts, so as to improve heavy oil production effect; and the method has the continuous production time of the oil wells far more than that of the production methods in the prior art, greatly reduces production operation cost, and is obviously superior to the prior heavy oil production technology.

Description

一种稠油开采的方法技术领域本发明涉及油田采油方法,特别涉及一种稠油开采的方法,尤其是采用降低原油粘度的方法开采原油。 The method of the technical field of the present invention relates to a heavy oil recovery oil recovery methods, and particularly relates to a method for heavy oil recovery, especially the use of a method for reducing the viscosity of crude oil mining. 适用于地面原油50°C时,原油粘度为100 mPa • s〜10000mPa • s; 20。 When applied to the ground crude 50 ° C, the oil viscosity is 100 mPa • s~10000mPa • s; 20. C时原油密度大于0. 92g/cm3; 凝固点为-20 。 When C oil density greater than 0. 92g / cm3; freezing point of -20. C〜50。 C~50. C;胶质沥青质大于25%;含硫大于0.2%;含蜡量大于1.0%,常温常压稠油油藏的开采的问题。 C; asphaltene colloid greater than 25%; greater than 0.2% sulfur; waxy greater than 1.0%, the problem of mining heavy oil reservoir temperature and pressure. 背景技术目前,热力开采方法是油田传统的稠油开采方法,其技术核心是通过对油藏或井筒加热以降低原油粘度,提高原油的流动性能,以达到提高油井产量的目的。 BACKGROUND OF THE INVENTION Currently, thermal recovery of heavy oil recovery method is the traditional method of oil, which is the core technology of the reservoir or by heating the wellbore to decrease the viscosity of crude oil, to improve the flow properties of crude oil, in order to achieve the purpose of improving oil yield. 主要有注蒸汽、伴热电缆、井下加热炉、电热杆、火烧油层等方法。 There main steam injection, heating cables, underground heating furnace, electric pole, or the like situ combustion. 经多年生产实践表明,其技术已日臻成熟, 但普遍存在投资高,井下情况复杂,对开采技术要求高,对薄层、互薄层油藏及边底水活跃油藏适应性差等问题。 After years of production practice showed that the technology has matured, but the high prevalence of investment, the situation underground complex, technically demanding mining of thin, thin reservoir and mutual active edge and bottom water reservoirs and poor adaptability. 因此,从事稠油开采的技术人员已将注意力转移到稠油冷的研究和应用上。 Therefore, in heavy oil recovery technicians have attention to the cold heavy oil research and application. 稠油冷采是指应用常规抽油泵和各种非热力方法开采稠油的过程,主要有井筒加药、化学解堵、螺杆泵、抽稠泵、注空气、注氮气、 注碱水等方法。 Cold heavy oil pump means using conventional methods and various non-thermal process heavy oil exploitation, the main wellbore dosing, chemical plugging, screw pump, the pump pumping thick, injection of air, nitrogen injection, injection or the like alkaline . 发明内容本发明的目的是:提供一种稠油开采的方法,主要提供一个系列的降粘剂,在油井包括油层和油井井筒使稠油降粘,提高稠油的流动性。 Object of the present invention is: to provide a method for heavy oil recovery, mainly to provide a series of viscosity reducer, comprising a reservoir in the well and the well bore so that viscosity reduction, improve the fluidity of heavy oil. 根据稠油5(TC时原油的粘度、凝固点、含蜡量、胶质沥青质含量及油层厚度、有效孔隙度、渗透率,利用0.2%〜2.0%的水溶性降粘剂I: 50 1113〜3001113挤入油层后,解决地层原油流入井筒的问题;在井筒 The heavy 5 (TC crude oil viscosity, the freezing point, wax content, asphaltene content, and gum reservoir thickness, effective porosity, permeability, 0.2% ~2.0% using a water-soluble reducing agent I: 50 1113~ 3,001,113 squeeze into the reservoir, to solve the problem of formation of crude oil into the wellbore; wellbore

举升过程中,当采出井液的5(TC粘度小于5000mPa. s时,应用降粘剂II进行减阻降粘,当采出井液的5(TC粘度大于5000mPa.s时,降粘剂 During the lifting, when the produced well fluids 5 (TC viscosity of less than 5,000 mPa. S, the drag-lowering agent II for viscosity reduction, when the produced well fluids 5 (TC viscosity greater than 5000 mPa.s, a viscosity reducing agent

III,,利用降粘剂III进行减阻降粘。 III ,, for drag reduction using a reducing agent III viscosity reduction. 实现5(TC时,地面原油粘度:100 When implementing 5 (TC, ground oil viscosity: 100

mPa's〜10000mPa *s; 20°C时,原油密度大于0. 92g/cm3;凝固点:-20 mPa's~10000mPa * s; time 20 ° C, oil density of greater than 0. 92g / cm3; freezing point: -20

°C〜50°C;胶质沥青质大于25%;含硫大于O. 2%;含蜡量大于:1. 0%的 ° C~50 ° C; asphaltene colloid greater than 25%; sulfur is greater than O. 2%; waxy greater than: 10% by weight.

稠油在常温常压下稠油油藏的原油更有效地开采。 Heavy crude oil under normal temperature and pressure in the heavy oil reservoir exploitation more effectively.

本发明为解决其技术问题所采取的技术方案是: The present invention to solve the technical problem of technical solutions are adopted:

一种稠油冷采的方法,实施该方法的步骤如下: One kind of cold heavy oil method, the step of implementing the method is as follows:

1、制备水溶性降粘剂I:水溶性降粘剂I的各组分重量比:3〜 1. Preparation of water-soluble reducing agent I: a water-soluble reducing agent of the components by weight ratio of I: 3 ~

5%的氢氧化钠、2〜6%的多乙烯多胺聚氧丙烯聚氧乙烯醚(I )的8〜10% 碳酸钠,2〜3.5%丁基萘磺酸钠,2〜4.5%碳酸氢钠,其余为水,各组分重量百分数之和为100%。 5% sodium hydroxide, 2 ~ 6% of polyethylene polyamine polyoxypropylene polyoxyethylene ethers (I) is 8~10% of sodium carbonate, 2~3.5% sodium butyl naphthalene sulfonate, carbonate, 2~4.5% sodium hydroxide, the remainder being water, the percentages by weight of the components is 100%. 主要设备: Major equipment:

具有搅拌、加热、冷却及真空系统的搪瓷反应釜。 With stirring, heating, cooling and vacuum system enamel reactor.

生产方法: production method:

首先,将氢氧化钠、碳酸钠和碳酸氢钠三种原料按比例加入搪瓷反 First, sodium hydroxide, sodium carbonate and bicarbonate, to join three materials enamel trans

应釜。 It should kettle. 缓慢升温到50〜60°C,其次,加入20%的水,在不断搅拌30分钟后,然后在不断搅拌的情况下按比例依次加入多乙烯多胺聚氧丙烯聚氧乙烯醚(I)、 丁基萘磺酸钠;最后按比例加入其余的水,边加入边搅拌,搅拌20分钟后,停止加热,边冷却边搅拌至常温出料,得到水溶性降粘剂I。 Slowly warmed to 50~60 ° C, followed by addition of 20% water, and after stirring for 30 minutes continuously, then under constant stirring were added in proportion of polyethylene polyamine polyoxypropylene polyoxyethylene ethers (the I), butyl-naphthalene sulfonate; after the last addition of the remaining proportion of water, is added with stirring, stirring for 20 minutes, heating was stopped while cooling the material to room temperature with stirring, a water-soluble reducing agent to give I.

所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(I )的代号为破乳剂AE7921,生产单位:常州石油化工总厂。 Said polyethylene polyamine polyoxypropylene polyoxyethylene ethers (I) code-named demulsifier AE7921, production units: Changzhou Petrochemical. 多乙烯多胺聚氧丙烯聚氧乙烯醚在黄洪周主编的化学工业出版社出版的《中国表面活性剂总览》(第473页)一书中有介绍。 Polyethylene polyamine polyoxypropylene polyoxyethylene ethers Wong Hung circumferential edited Chemical Industry Publishing House "Chinese surfactant Overview" (page 473) have described a book.

所述的丁基萘磺酸钠在赵福麟主编的中国石油大学出版社出版的面向21世纪课程教材《油田化学》(第302页) 一书中有介绍。 The butyl naphthalene sulfonate in Zhao Fulin editor of the China Petroleum University Press published curriculum materials for the 21st century "Oilfield Chemistry" (p. 302) have introduced a book.

所述的丁基萘磺酸钠可以采用2, 6-二叔丁基萘磺酸钠,用量相同。 The butyl naphthalene sulfonate may be used 2,6-di-t-butyl naphthalene sulfonate, the same dosage. 2,6-二叔丁基萘磺酸钠的分子式是:C18H23S03Na。 Butyl-naphthalene sulfonate is of the formula: C18H23S03Na.

2、 制备降粘剂II:降粘剂II的各组分重量比:45〜50%的粗苯、2〜 4%的多乙烯多胺聚氧丙烯聚氧乙烯醚(11),其余为200ft溶剂油,各组分重量百分数之和为100%。 2. Preparation of reducing agent II: II the components weight ratio of reducing agent: 45~50% crude benzene, 2 ~ 4% polyethylene polyamine polyoxypropylene polyoxyethylene ethers (11), the remainder being 200ft solvent oil, the weight percentages of the components is 100%.

上述粗苯是煤炼焦化过程中回收的副产物(市场有销售),其主要成份是苯(分子式CeH6)、甲苯(分子式C7H8) 、 二甲苯(分子式C 8Hio)。 Of the above crude benzene is recovered during coking coal byproduct (market sales), which is the main component of benzene (Formula CeH6), toluene (molecular formula C7H8), xylene (Formula C 8Hio). 因此,本发明中的粗苯可以采用苯、甲苯或二甲苯代替。 Thus, in the present invention may be crude benzene, benzene, toluene or xylene instead of employing. 粗苯、 苯、甲苯和二甲苯都是很好的液体溶剂,使用量相同。 Benzol, benzene, toluene and xylene are good liquid solvent, using the same amount.

主要设备: Major equipment:

具有搅拌、加热、冷却及真空系统的常压搪瓷反应釜。 With stirring, heating, cooling and vacuum pressure enamel reactor system.

生产方法: production method:

将粗苯、多乙烯多胺聚氧丙烯聚氧乙烯醚(n)和200tt溶剂油三种组 The crude benzene, polyethylene polyamine polyoxypropylene polyoxyethylene ether (n) and solvent oil three components 200tt

分按比例加入搪瓷反应釜,边加边搅拌,加完料再搅拌60分钟后停止 Added proportionally divided enamel reactor, stirring plus side, completion of the addition and then stirred for 60 minutes to stop

搅拌出料,得到降粘剂n。 The material was stirred to give a viscosity reducing agent n.

所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(n)的代号为破乳剂 Said polyethylene polyamine polyoxypropylene polyoxyethylene ether (n) is code-named demulsifiers

AE8051,生产单位:山东滨化集团公司。 AE8051, production units: Shandong foreshore Group. 多乙烯多胺聚氧丙烯聚氧乙、烯醚在黄洪周主编的化学工业出版社出版的《中国表面活性剂总览》 (第473页)一书中有介绍。 Polyethylene polyamine polyoxyethylene polyoxypropylene alkenyl ethers Wong Hung circumferential edited Chemical Industry Publishing House "Chinese surfactant Overview" (page 473) have described a book.

3、 制备降粘剂ni:降粘剂III的各组分重量比:30〜35%的多乙烯多胺聚氧丙烯聚氧乙烯醚(ni)、 5—8%的醋酸乙酯(分子式C4H802)、其余为水,各组分重量百分数之和为100%。 3. Preparation of Ni reducing agent: reducing agent of the components by weight ratio of III: 30~35% of polyethylene polyamine polyoxypropylene polyoxyethylene ethers (ni), 5-8% ethyl acetate (formula C4H802 ), the remainder being water, the percentages by weight of the components is 100%.

主要设备:具有搅拌、加热、冷却及真空系统的搪瓷反应釜。 The main apparatus: a stirring, heating, cooling and vacuum system enamel reactor. 生产方法: production method:

将多乙烯多胺聚氧丙烯聚氧乙烯醚(III)、 5—8%的醋酸乙酯和水三 The polyethylene polyamine polyoxypropylene polyoxyethylene ethers (III), 5-8% of water and ethyl acetate three

种组分在不断搅拌的情况下按比例加入搪瓷反应釜。 Kinds of components in proportion to the constant stirring is added enamel reactor. 缓慢升温到50〜 6(TC,搅拌60分钟后停止加热,边冷却边搅拌至常温出料,得到降粘 Slowly warmed to 50~ 6 (TC, stirred for 60 minutes heating was stopped while cooling the material to room temperature with stirring to give a viscosity reduction

剂ni。 Agent ni.

所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(m)的代号为破乳剂 Said polyethylene polyamine polyoxypropylene polyoxyethylene ethers (m) is the code for the demulsifier

AP121,生产单位:金陵石化公司化工二厂。 AP121, production units: Jinling Petrochemical Corporation Chemical Plant. 多乙烯多胺聚氧丙烯聚氧 Polyethylene polyamine polyoxypropylene polyoxy

乙烯醚在黄洪周主编的化学工业出版社出版的《中国表面活性剂总览》 Vinyl ethers Wong Hung circumferential edited Chemical Industry Publishing House "Chinese surfactant Overview"

(第471页)一书中有介绍。 (P. 471) have introduced a book.

4、 将油层挤入液挤入油层:水与水溶性降粘剂I按重量比为100: 4, the reservoir fluid to squeeze oil squeeze: I a water-soluble reducing agent weight ratio of 100:

0.2〜2.0,混合均匀配制成油层挤入液;将501113〜3001113的油层挤入液挤入油层,憋压24〜48小时。 0.2~2.0, formulated into an oil squeeze mixed solution; squeeze the oil layer 501113~3001113 reservoir fluid to squeeze, hold pressure 24~48 hours.

油层挤入液进入油层后,使油层中的稠油降粘,提高油层中稠油的流动性,解决地下油层的稠油流入井筒困难的问题。 Squeeze fluid into the reservoir after the reservoir, so that the oil viscosity reduction, improve the fluidity of the heavy oil, the heavy oil solution flows into an underground reservoir wellbore difficult problem. 油层挤入液挤入油层的方法和憋压方法是油田井下施工人员熟知的常用的方法,不详细介绍。 Method squeeze and hold compression method of fluid to squeeze oil reservoir is commonly used method well known to persons downhole construction, not described in detail.

5、 采用抽油机或螺杆泵举升设备举升采出井液;并检测采出井液5(TC时的粘度。抽油机或螺杆泵举升采出井液和检测采出井液的50°C 时粘度方法是本领域技术人员熟知技术,不详细介绍。 5, using pumping or lifting device lifting screw Produced well fluids; and detecting the produced well fluid 5 (TC pumping viscosity or screw lift the produced well fluids and the detection of the produced well fluids 50 ° C. when the viscosity method is well known to those skilled in art, not described in detail.

当采出井液的5(TC粘度小于5000mPa.s时,从油井油管与套管之 When the produced well fluids 5 (TC viscosity of less than 5000mPa.s, from the well casing and the tubing

间的环空加入降粘剂n,同时举升采出井液。 The annulus between the viscosity reducing agent was added n, while lifting the produced well fluid. 降粘剂n的加入重量与 By weight of viscosity reducer is added to the n

油井产液体积比为600〜800毫克:l升。 Well liquid production volume ratio 600~800 mg: l l. 比如:油井产液为10m7d, 加药周期为7天,那么7天的产液量合计为70 1113,那么加药量为42kg〜 56kg。 For example: oil well production fluid is 10m7d, dosing period of 7 days, then the fluid production seven days the total of 701,113, then the dosage is 42kg~ 56kg. 如果加药周期为10天,那么10天的产液量合计为100 m3,那么加药量为60kg〜80kg。 If the dosing period is 10 days, then the fluid production 10 days total of 100 m3, then the dosage is 60kg~80kg. 当采出井液的5(TC粘度大于5000mPa. s时,从油井油管与套管之 When the produced well fluids 5 (TC viscosity greater than 5000mPa. S, from the well casing and the tubing

间降粘剂ni,同时举升采出井液。 Between viscosity reducer ni, while lifting the produced well fluid. 降粘剂ni液的加入重量与油井产液 Ni solution viscosity reducing agent is added to the oil well production fluids by weight

体积比为400〜600毫克:1升。 400~600 mg volume ratio: 1 liter.

上述说明中3次使用同一名字叫"多乙烯多胺聚氧丙烯聚氧乙烯醚"的组分,市场上有多个产品都叫这个名字。 In the above description three times with the same name "polyethylene polyamine polyoxypropylene polyoxyethylene ethers" components, a plurality of call name products in the market. 他们的生产厂家不一样,分子量也不一样,产品代号不同。 Their manufacturers are not the same, not the same molecular weight, different product code. 为把3次使用同一名字"多乙烯多胺聚氧丙烯聚氧乙烯醚"组分区分开,在"多乙烯多胺聚氧丙烯 3 is the use the same name "polyethylene polyamine polyoxypropylene polyoxyethylene ethers" separate set of partitions, the "polyethylene polyamine polyoxypropylene

聚氧乙烯醚"后注有(i)、 (n)或(iii)的区分符号。 After polyoxyethylene ethers "marked with (i), (n) or (iii) to distinguish symbols.

从油井油管与套管之间的环空加入降粘剂方法是本领域技术人员熟知技术,不详细介绍。 The method of reducing agent added from the annulus between the tubing and the well casing are well known to those skilled in art, not described in detail.

本发明的有益效果:本发明采用的稠油开采方法,与现有的稠油 Advantageous Effects of Invention: heavy oil recovery methods employed in the present invention, conventional heavy oil

开采方法不同。 Different mining methods. 采用化学方法使油层中稠油降粘,提高油层中稠油的 Chemical methods in that the oil viscosity reduction, increase in heavy oil reservoir

流动性,解决地下油层的稠油流入井筒困难的问题;并区分采出井液5(TC的粘度,从油井油管与套管之间的环空加入不同的井筒性减阻降粘液,降低井筒内井液的粘度,提高稠油开采效果。油井连续生产时间远远大于现有技术的开采方法,生产运行成本大幅度降低,明显优于现有稠油开采技术。在华北油田冀中南部稠油油藏平均下泵深度为1439m的54 口稠油井中实验,已累计多生产原油52. 940X10"屯。单井平均检泵周期816天。 Mobility, heavy oil solution flows into an underground reservoir, the wellbore difficult problem; distinguish the produced well fluids and 5 (TC viscosity, with different drag reducing properties of mucus from the wellbore annulus between the tubing and the well casing, the wellbore decreased the viscosity of the well fluids, heavy oil recovery effect of improving oil well production time is much greater than the continuous mining method of the prior art, a significant reduction in operating costs of production, significantly better than the prior art heavy oil recovery. south center portion of heavy oil in North the average depth of the reservoir pumps 54 to 1439m heavy experimental wells, production of crude oil has accumulated plurality 52. ​​940X10 "Tun. the average single well pump i 816 days.

具体实施方式 detailed description

利用本发明在华北油田采油五厂多个稠油油藏中实验,均收到显著的开发效果。 Experiment using the present invention in North oilfield Wuchang plurality of heavy oil reservoirs, have received significant development effect. 以深南油田为例进行说明。 To Shennan oilfield as an example.

实施例l:深南油田的泽70稠油油藏,油藏自上而下发育着Qp, Nm, Ng, Ed及Es地层,油层主要分布于Ed,油藏平均中深2400m,其油层物性为:孔隙度为:15%〜25. 5%;渗透率为:208 X 10_3〜2290X 10—3W/z?2;地面原油粘度:(50°C) 1157〜85085mPa. s; 20。 Embodiment Example l: Bright field Shennandian heavy oil reservoir 70, the reservoir top-down development Qp, Nm, Ng, Ed and Es formation, mainly in the oil Ed, 2400m deep average reservoir, which reservoir properties as: porosity: 15% 5% ~ 25; permeability:.? 208 X 10_3~2290X 10-3W / z 2; ground oil viscosity: (50 ° C) 1157~85085mPa s; 20.. C原油密度: 0. 9442〜1. 0035g/cm3;凝固点:20〜40°C;胶质沥青质:29. 38%〜 C oil density: 0. 9442~1 0035g / cm3; freezing point:. 20~40 ° C; asphaltene colloid: 29 ~ 38%

71.23%;含硫:0. 4%〜0. 82%;含蜡:1.56〜10. 75%;油藏平均温度: 71.23%; sulfur: 0 ~ 0 82% 4%; waxy: 1.56~10 75%; average temperature reservoir:

93.4°C;地温梯度:3.34°C/100m;原始地层压力:23.0腦Pa;压力系 93.4 ° C; temperature gradient: 3.34 ° C / 100m; original formation pressure: 23.0 Pa brain; pressure lines

数:0.99,属常温、常压稠油油藏。 Number: 0.99, is a normal temperature and pressure heavy oil reservoirs.

开发该油藏时,测得泽70断块稠油酸值在1. 26〜1. 85mgK0H/g, 属于强活性稠油,具体实施时采取了以下步骤,以泽70 — 23井为例, 进一步详细说明。 When the development of the reservoir, measured acid value Ze heavy Block 70 1. 26~1 85mgK0H / g, the activity of heavy oil are strong, the steps taken when particular embodiment, Ze to 70 - 23 wells, for example, further detail.

泽70 — 23井油层物性为:有效孔隙度为:19. 8%;渗透率为:1042. 3 X10—3//辺2,地面原油粘度:(50°C) 4386. 2mPa. s; 20。 Ze 70--23 reservoir properties as well: Effective porosity: 19 8%; permeability: 1042 3 X10-3 // vicinities 2, ground oil viscosity: (50 ° C) 4386. 2mPa s; 20... . C原油密度: 0.9985g/cm3,凝固点:27°C;胶质沥青质:58.4%;含硫:0.76%;含蜡:7.5%,油藏温度:94.3°C,地温梯度:3.34°C/100m,原始地层压力:24.3MPa,压力系数:0.99;原油酸值在1.57mgK0H/g。 C oil density: 0.9985g / cm3, freezing point: 27 ° C; asphaltene colloid: 58.4%; sulfur: 0.76%; wax: 7.5%, reservoir temperature: 94.3 ° C, temperature gradient: 3.34 ° C / 100m, the original formation pressure: 24.3MPa, pressure coefficient: 0.99; crude acid value 1.57mgK0H / g.

1、 制备水溶性降粘剂I:水溶性降粘剂I的各组分重量比:3.5% 1. Preparation of water-soluble reducing agent I: a water-soluble reducing agent I weight ratio of the components: 3.5%

的氢氧化钠、4.5%的代号破乳剂AE7921、 2.8%的丁基萘磺酸钠、8.5% 碳酸钠、3.0%碳酸氢钠、其余为水,各组分重量百分数之和为100%。 Sodium hydroxide, 4.5% demulsifier code AE7921, 2.8% of sodium butyl naphthalene sulfonate, 8.5% sodium carbonate, 3.0% sodium bicarbonate, the balance water, the weight percentages of the components is 100%. 首先,将氢氧化钠、碳酸和碳酸三种组分按比例加入搪瓷反应釜。 First, sodium hydroxide, and carbonate three components are added proportionally enamel reactor. 缓慢升温到55。 Slowly warming to 55. C,其次,加入水用量的20%,在不断搅拌30分钟,然后在不断搅拌的情况下按比例依次加入破乳剂AE7921、 丁基萘磺酸钠; 最后按比例加入其余的水,边加入边搅拌,搅拌20分钟后,停止加热, 边冷却边搅拌至常温出料,得到水溶性降粘剂I 。 C, followed by addition of 20% of the amount of water, stirring continuously for 30 minutes and then under constant stirring were added demulsifier proportion AE7921, butyl-naphthalene sulfonate; and finally adding the remaining proportion of water is added with edge after stirring, stirring for 20 minutes, heating was stopped while cooling the material to room temperature with stirring to give a water-soluble reducing agent I.

2、 将水溶性降粘剂I挤入油层:水与水溶性降粘剂I按重量比为100: 1.2,混合均匀配制成油层挤入液;将150 1113的油层挤入液挤入油层;憋压30小时。 2, to squeeze the oil-soluble reducing agent I: I a water-soluble reducing agent weight ratio of 100: 1.2, to squeeze into the mixed solution formulated as oil; and 1,501,113 to squeeze fluid to squeeze oil reservoir; pressure - 30 hours.

3、 采用举升设备抽油机举升采出井液;并检测得到采出井液50 'C的粘度为4834mPa. s (因取样时间不同,测定的粘度值有一定的波动); 3, using the lifting device lifting the produced well fluid pumping unit; and detecting the produced well fluids to obtain 50 'C a viscosity of 4834mPa s (due to the different sampling time, a certain viscosity value measured fluctuations).;

4、 制备降粘剂II:降粘剂II的各组分重量比:47.5%的粗苯、3.0% 的破乳剂AE8051,其余为200#溶剂油,各组分重量百分数之和为100。 4. Preparation of reducing agent II: II the components weight ratio of reducing agent: crude benzene 47.5%, 3.0% demulsifier AE8051, the balance 200 # solvent oil, the weight percentages of the components is 100. /。 /. .

制备油溶性降粘剂II的方法:将粗苯、破乳剂AE8051和200tt溶剂油三种组分按比例加入搪瓷反应釜,边加边搅拌,加完料再搅拌60分 The method of preparing an oil-soluble reducing agent II: A mixture of crude benzene, solvent oil demulsifier AE8051 and 200tt three components added proportionally enamel reactor, stirring plus side, completion of the addition was stirred for 60 minutes

钟后停止搅拌出料,得到油溶性降粘剂n。 Minutes later stirring was stopped discharge, the oil-soluble reducing agent to obtain n.

5、 最后,从油井油管与套管之间的环空加入油溶性降粘剂n,同时举升采出井液。 5, finally, an oil-soluble reducing agent added from n annulus between the tubing and the well casing, while lifting the produced well fluid. 油溶性降粘剂n的加入重量与油井产液体积比为7oo Oil-soluble reducing agent is added to n and the weight ratio of the volume of liquid production wells 7oo

毫克:l升。 Mg: l l.

实施例2:泽70 — 25井,地面原油粘度:(50°C) 9886.'2mPa. s; Example 2: Ze 70--25 wells, ground oil viscosity: (50 ° C) 9886.'2mPa s;

1、 采用实施例1的步骤1。 1, using the procedure of Example 1 of Embodiment 1.

2、 采用实施例1的步骤2。 2, using the procedure of Example 1 of Embodiment 2.

3、 采用举升设备抽油机举升采出井液;并检测得到采出5(TC的粘度为9812.3mPa.s (因取样时间不同,测定的粘度值有一定的波动); 3, using the lifting device lifting the produced well fluid pumping unit; and detecting the produced obtained 5 (TC viscosity of 9812.3mPa.s (by sampling at different times, the viscosity value measured with a certain fluctuation);

4、 制备降粘剂III:降粘剂III的各组分重量比:329&的破乳剂AP121、 6.2%的醋酸乙酯、其余为水,各组分重量百分数之和为100%。 4. Preparation of reducing agent III: III of the components weight ratio of reducing agent: 329 & demulsifier AP121, 6.2% of ethyl acetate, the remainder being water, the percentages by weight of the components is 100%.

制备降粘剂III的方法:将破乳剂AP121、醋酸乙酯和水三种组分在不断搅拌的情况下按比例加入搪瓷反应釜。 Preparation method of reducing agent III: demulsifier AP121, ethyl acetate and water, in the case of three components added proportionally constant stirring enamel reactor. 缓慢升温到55t:,搅拌60 分钟后停止加热,边冷却边搅拌至常温出料,得到降粘剂III。 Slowly warmed to 55t :, stirred for 60 min heating was stopped while cooling the material to room temperature with stirring to give a viscosity reducing agent III.

5、 从油井油管与套管之间的环空加入降粘剂III,同时举升采出井液。 5, addition of viscosity reducing agent III from the annulus between the tubing and the well casing, while lifting the produced well fluid. 降粘剂III液的加入重量与油井产液体积比为430毫克:l升。 III solution viscosity reducing agent is added to the weight of the oil solution producing a volume ratio of 430 mg: l l.

在采用本发明的稠油开采过程中,减阻降粘率达75°/。 In the present invention, the heavy oil recovery process, the viscosity reducing drag reduction rate of 75 ° /. 以上,在华北油田冀中南部稠油油藏平均下泵深度为1439m的54 口稠油井中实验, 已累计多生产原油52.940X 104吨。 Above, the heavy oil reservoir North south center portion average depth of the pump 54 of the heavy-oil wells experiment 1439m, has accumulated plurality 52.940X 104 tons of crude oil production. 单井平均检泵周期816天。 The average single well pump inspection cycle of 816 days. 实施例3-5:各组分重量百分比列表如下:各组分重量百分数之和为100%。 Example 3-5: percentage by weight of the components listed below: The percentages by weight of the components is 100%. (实施例5中采用的是2,6-二叔丁基萘磺酸钠) (Example 5 was employed 2,6-di-butyl naphthalene sulfonate)

<table>table see original document page 12</column></row> <table> <Table> table see original document page 12 </ column> </ row> <table>

Claims (8)

  1. 1、一种稠油冷采的方法,其特征是:该方法的步骤如下: a、制备水溶性降粘剂I:水溶性降粘剂I的各组分重量比:3~5%的氢氧化钠、2~6%的多乙烯多胺聚氧丙烯聚氧乙烯醚(I)的8~10%碳酸钠、2~3.5%丁基萘磺酸钠、2~4.5%碳酸氢钠,其余为水,各组分重量百分数之和为100%。 1. A method of cold heavy oil, characterized in that: the step of the method is as follows: a, preparing a water soluble reducing agent I: a water-soluble reducing agent of the components by weight ratio of I: 3 to 5% hydrogen sodium oxide, 2 to 6% of polyethylene polyamine polyoxypropylene polyoxyethylene ethers (I) 8-10% sodium carbonate, 2 to 3.5% of sodium butyl naphthalene sulfonate, sodium bicarbonate 2 to 4.5%, the remainder water, the weight percentages of the components is 100%. 制备水溶性降粘剂I的方法: 首先,将氢氧化钠、碳酸钠和碳酸氢钠三种组分按比例加入搪瓷反应釜。 Preparation of a water-soluble reducing agent I: First, sodium hydroxide, sodium carbonate and bicarbonate, to join the three components enamel reactor. 缓慢升温到50~60℃,其次,加入20%的水,搅拌30分钟,然后在不断搅拌的情况下按比例依次加入多乙烯多胺聚氧丙烯聚氧乙烯醚(I)、丁基萘磺酸钠;最后按比例加入其余的水,边加入边搅拌,搅拌20分钟,停止加热,边冷却边搅拌至常温出料,得到水溶性降粘剂I。 Was slowly warmed to 50 ~ 60 ℃, followed by addition of 20% water, stirred for 30 min, then under constant stirring were added in proportion of polyethylene polyamine polyoxypropylene polyoxyethylene ethers (the I), butyl naphthalene sulfonate sodium; and finally adding the remaining proportion of water is added with stirring, stirring for 20 minutes, heating was stopped while cooling the material to room temperature with stirring, a water-soluble reducing agent to give I. b、制备降粘剂II:降粘剂II的各组分重量比:45~50%的粗苯、2~4%的多乙烯多胺聚氧丙烯聚氧乙烯醚(II),其余为200#溶剂油,各组分重量百分数之和为100%。 B, Preparation of reducing agent II: II the components weight ratio of reducing agent: 45 to 50% crude benzene, 2 to 4 percent polyethylene polyamine polyoxypropylene polyoxyethylene ethers (II), the remaining 200 # solvent oil, the weight percentages of the components is 100%. 制备降粘剂II的方法: 将粗苯、多乙烯多胺聚氧丙烯聚氧乙烯醚(II)和200#溶剂油三种原料按比例加入搪瓷反应釜,边加边搅拌,加完料再搅拌60分钟后停止搅拌出料,得到降粘剂II。 Preparation method of reducing agent II: The crude benzene, polyethylene polyamine polyoxypropylene polyoxyethylene ethers (II) and 200 # solvent oil, to add three materials enamel reactor, stirring plus side, and then completion of the addition after stirring for 60 minutes stirring was stopped and the material, reducing agent to give II. c、制备降粘剂III:降粘剂III的各组分重量比:30~35%的多乙烯多胺聚氧丙烯聚氧乙烯醚(III)、5-8%的醋酸乙酯、其余为水,各组分重量百分数之和为100%。 C, a viscosity reducing agent III was prepared: Component Weight ratio of each of the reducing agent III: 30 to 35% polyethylene polyamine polyoxypropylene polyoxyethylene ethers (III), 5-8% of the ethyl acetate, the remainder being water, and the percentages of the components is 100% by weight. 制备降粘剂III的方法: 将多乙烯多胺聚氧丙烯聚氧乙烯醚(III)、5-8%的醋酸乙酯和水三种组分在不断搅拌的情况下按比例加入搪瓷反应釜。 Preparation method of reducing agent III: A polyethylene polyamine polyoxypropylene polyoxyethylene ethers (III), 5-8% ethyl acetate and water, in the case of three components added proportionally constant stirring enamel reactor . 缓慢升温到50~60℃,搅拌60分钟停止加热,边冷却边搅拌至常温出料,得到降粘剂III。 It was slowly warmed to 50 ~ 60 ℃, stirred for 60 minutes heating was stopped while cooling the material to room temperature with stirring to give a viscosity reducing agent III. d、将油层挤入液挤入油层:水与水溶性降粘剂I按重量比为100∶0.2~2.0,混合均匀配制成油层挤入液;将50m3~300m3的油层挤入液挤入油层,憋压24~48小时。 d, squeeze the reservoir fluid to squeeze oil: water-soluble reducing agent and a weight ratio of I to 2.0 100:0.2, formulated into an oil squeeze mixed liquid; 50m3 ~ 300m3 of the reservoir fluid to squeeze oil squeeze , pressure - 24 to 48 hours. e、采油:采用抽油机或螺杆泵举升设备举升采出井液;并检测采出井液50℃时的粘度。 e, oil: using pumping or lifting device lifting screw Produced well fluids; and detecting the produced well fluid viscosity at 50 ℃. 采出井液的50℃粘度小于5000mPa.s时,从油井油管与套管之间的环空加入降粘剂II,同时举升采出井液。 Produced well fluids at 50 ℃ viscosity of less than 5000 mPa.s, a viscosity reducing agent II was added from the annulus between the tubing and the well casing, while lifting the produced well fluid. 降粘剂II的加入重量与油井产液体积比为600~800毫克∶1升; 或采出井液的50℃粘度大于5000mPa.s时,从油井油管与套管之间降粘剂III,同时举升采出井液。 II reducing agent is added to the oil weight ratio of liquid production volume of 600 liters to 800 mg :1; or when the produced well fluid viscosity of greater than 50 deg.] C 5000mPa.s, from the well between the tubing and the casing reducing agent III, while the lift the produced well fluid. 降粘剂III液的加入重量与油井产液体积比为400~600毫克∶1升。 III solution viscosity reducing agent is added to the oil weight ratio of liquid production volume of 400 liters to 600 mg :1.
  2. 2、 如权利要求l所述的稠油冷采的方法,其特征是:所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(I )的代号为破乳剂AE7921。 2, as heavy l cold production method according to claim, wherein: said polyethylene polyamine is polyoxypropylene polyoxyethylene ethers (I) in the code for the demulsifier AE7921.
  3. 3、 如权利要求l所述的稠油冷采的方法,其特征是:所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(II)的代号为破乳剂AE8051 。 3, as heavy l cold production method according to claim, wherein: said polyethylene polyamine code polyoxyethylene polyoxypropylene vinyl ether (II) is demulsifier AE8051.
  4. 4、 如权利要求l所述的稠油冷采的方法,其特征是:所述的多乙烯多胺聚氧丙烯聚氧乙烯醚(III)的代号为破乳剂AP121。 4, as heavy l cold production method according to claim, wherein: said polyethylene polyamine code polyoxyethylene polyoxypropylene vinyl ether (III) is demulsifier AP121.
  5. 5、 如权利要求l、 2、 3或4所述的稠油冷采的方法,其特征是-所述的粗苯是苯。 5, as claimed in claim l, cold heavy oil method 2, 3 or 4, wherein - said crude benzene is benzene.
  6. 6、 如权利要求l、 2、 3或4所述的稠油冷采的方法,其特征是: 所述的粗苯是甲苯。 6, as claimed in claim l, cold heavy oil method 2, 3 or 4, wherein: said crude benzene is toluene.
  7. 7、 如权利要求l、 2、 3或4所述的稠油冷采的方法,其特征是: 所述的粗苯是二甲苯。 7, as claimed in claim l, heavy oil 2, 3 or 4, wherein the cold production method, wherein: said crude benzene xylene.
  8. 8、如权利要求l、 2、 3或4所述的稠油冷采的方法,其特征是: 所述的丁基萘磺酸钠是2, 6-二叔丁基萘磺酸钠。 8, as claimed in claim l, heavy oil 2, 3 or 4, wherein the cold production method, wherein: said 2-butyl naphthalene sulfonate, 2,6-di-butyl naphthalene sulfonate.
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CN102010703A (en) * 2010-11-27 2011-04-13 成都孚吉科技有限责任公司 Thickened oil cold production displacement agent for thickened oil production and preparation process thereof
CN102364206A (en) * 2010-12-14 2012-02-29 新疆德蓝股份有限公司 New method for reducing viscosity of thickened oil for oil and gas extraction
CN102373077A (en) * 2010-08-25 2012-03-14 中国石油天然气股份有限公司 Extra-heavy oil functional demulsifier as well as preparation and application thereof
CN102635343A (en) * 2012-04-13 2012-08-15 中国石油天然气股份有限公司 Method for lifting heavy oil through shaft in heavy oil cold production
CN102852489A (en) * 2012-09-04 2013-01-02 中国石油天然气股份有限公司 Method for treating cold oil extraction layer of thickened oil
CN101852073B (en) 2009-11-13 2013-01-16 新疆德蓝股份有限公司 Novel integration technique for improving recovery ratio of thick oil with high thickness and low yield
CN105112039A (en) * 2015-06-30 2015-12-02 中国石油化工股份有限公司 High temperature resistant oil-soluble viscosity reducer and preparation method thereof

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CN88105018A (en) 1988-02-01 1988-12-21 辽河石油学校 Method of thick-oil viscosity depression by emulsification
GB0410961D0 (en) 2004-05-17 2004-06-16 Caltec Ltd A separation system for handling and boosting the production of heavy oil
CN1861979A (en) 2006-06-23 2006-11-15 中国石油天然气股份有限公司 Method of heavy oil cold flow production

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CN101852073B (en) 2009-11-13 2013-01-16 新疆德蓝股份有限公司 Novel integration technique for improving recovery ratio of thick oil with high thickness and low yield
CN102373077B (en) 2010-08-25 2014-01-15 中国石油天然气股份有限公司 Extra-heavy oil functional demulsifier as well as preparation and application thereof
CN102373077A (en) * 2010-08-25 2012-03-14 中国石油天然气股份有限公司 Extra-heavy oil functional demulsifier as well as preparation and application thereof
CN102010703B (en) 2010-11-27 2012-10-03 成都孚吉科技有限责任公司 Thickened oil cold production displacement agent for thickened oil production and preparation process thereof
CN102010703A (en) * 2010-11-27 2011-04-13 成都孚吉科技有限责任公司 Thickened oil cold production displacement agent for thickened oil production and preparation process thereof
CN102364206A (en) * 2010-12-14 2012-02-29 新疆德蓝股份有限公司 New method for reducing viscosity of thickened oil for oil and gas extraction
CN102635343A (en) * 2012-04-13 2012-08-15 中国石油天然气股份有限公司 Method for lifting heavy oil through shaft in heavy oil cold production
CN102635343B (en) * 2012-04-13 2014-11-19 中国石油天然气股份有限公司 Method for lifting heavy oil through shaft in heavy oil cold production
CN102852489A (en) * 2012-09-04 2013-01-02 中国石油天然气股份有限公司 Method for treating cold oil extraction layer of thickened oil
CN105112039A (en) * 2015-06-30 2015-12-02 中国石油化工股份有限公司 High temperature resistant oil-soluble viscosity reducer and preparation method thereof

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