WO2023078433A1 - Procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz - Google Patents

Procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz Download PDF

Info

Publication number
WO2023078433A1
WO2023078433A1 PCT/CN2022/130111 CN2022130111W WO2023078433A1 WO 2023078433 A1 WO2023078433 A1 WO 2023078433A1 CN 2022130111 W CN2022130111 W CN 2022130111W WO 2023078433 A1 WO2023078433 A1 WO 2023078433A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
oil
gas
flooding
reservoir
Prior art date
Application number
PCT/CN2022/130111
Other languages
English (en)
Chinese (zh)
Inventor
于文英
鲁振国
Original Assignee
北京红蓝黑能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京红蓝黑能源科技有限公司 filed Critical 北京红蓝黑能源科技有限公司
Priority to CN202280006070.0A priority Critical patent/CN116438362A/zh
Publication of WO2023078433A1 publication Critical patent/WO2023078433A1/fr

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/20—Displacing by water
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells

Definitions

  • the method belongs to an oil and gas extraction method in the oil and gas energy industry.
  • the comprehensive oil and gas recovery power such as bottom water steam flooding and bottom water hot water flooding is bottom-up, changing water injection/ Steam enters the driving direction of the reservoir.
  • a large amount of thermal energy is required to heat the bottom water, and the high recovery rate can effectively amortize the cost.
  • the space for improving the recovery rate is limited, and low energy consumption oil and gas drives are urgently needed. method.
  • the centralized thermal recovery method of the oil reservoir consumes less bottom water, the depressurization production mode, and the production relationship curve of centralized thermal recovery (Fig . 1 ). 40-54%.
  • the reservoir temperature was 180°C, indicating that the fluidity of the crude oil was fine.
  • the reason for the shutdown was that there was no energy supplement during the oil production process, the reservoir pressure dropped rapidly, and the energy recovery of the formation was limited.
  • the characteristic of water flow is to flow from the high potential energy area to the low potential energy area.
  • the intrusion of bottom water into oil and gas reservoirs during oil and gas production indicates that bottom water can overcome gravity and flow from the high potential energy area to the low potential energy area from bottom to top.
  • the story of the crow drinking water also shows that if certain conditions are met, the water level can rise steadily.
  • oil, gas and water are in the same pressure system, and the oil-water contact is relatively stable.
  • Oil and gas production leads to oil and gas reservoir formation energy deficit, and the water layer becomes a relatively high potential energy area.
  • the oil-water contact rises slowly, but the rising speed is lower than the oil and gas production speed.
  • the low recovery rate at the end of primary oil recovery shows that it is not enough to rely solely on formation water to restore oil and gas reservoir pressure.
  • the oil and gas recovery method of injecting water into the water layer of the oil and gas reservoir is characterized in that, in the process of oil and gas production, water is injected into the water layer of the oil and gas reservoir at a certain rate to supplement the water shortage in the water layer, enhance the driving force of oil and gas production, and make up for the energy deficit of the oil and gas reservoir.
  • the oil and gas reservoirs include cold recovery oil and gas reservoirs and various oil and gas reservoirs that are thermally recovered by heating water layers; the water layers include edge water layers and bottom water layers.
  • Water injection into the water layer of oil and gas reservoirs is especially important for oil and gas reservoirs with undeveloped water layers.
  • the injected water can be in various forms, such as surface water, formation water outside oil and gas reservoirs, or oil and gas production and recovery water, or multiphase fluid mixtures. It may be cold water or hot water, and it is not limited to enumeration.
  • the oil and gas recovery method of injecting water into the water layer of the oil and gas reservoir, for the cold recovery oil and gas reservoir can directly inject water into the bottom water layer, and can also inject water while heating the water layer; For reservoir water injection, only hot water can be injected, or water can be injected while heating the water layer during the oil production stage.
  • Water injection into the water layer of oil and gas reservoirs can be divided into the following three types due to different water temperatures: less than or equal to the formation temperature of crude oil, below the boiling point of water, and under the boiling state of water.
  • the oil and gas recovery method of injecting water into the water layer of the oil and gas reservoir has different performances in oil and gas displacement power: cold recovery and water injection, water flooding as the main force for oil and gas displacement, supplemented by pressure flooding; low water boiling point temperature heating and water injection, flooding
  • Oil and gas power is mainly based on bottom water hot water flooding, supplemented by bottom water steam flooding and reservoir elastic pressure flooding; heating at the boiling point of water and injecting water, and oil and gas driving power is mainly based on bottom water steam flooding, bottom water hot water flooding and reservoir Elastic pressure flooding is supplemented; edge water oil and gas reservoirs are dominated by edge water cold water flooding or edge water hot water flooding, supplemented by steam flooding and pressure flooding.
  • Fig. 2 Schematic diagram of the change trajectory of bottom water temperature and pressure under different thermal recovery methods
  • Fig. 3 AB 2 -V 3 is lower than the boiling point of water, heating the bottom water at high temperature and injecting water production relationship curve
  • Fig. 4 AB 2 -V 4 is lower than the boiling point of water, heating the bottom water at low temperature and injecting water production relationship curve
  • Point A is the original formation temperature and pressure
  • section A-B is the reservoir preheating stage
  • B-C and B-V are the oil production stages, where the solid line indicates that the formation water is heated during production, and the dotted line indicates that the formation water is not heated during production;
  • Figures 3 to 6 are the production relationship curves of heating the bottom water and injecting water during the oil production process, and the injection-production ratio is 1:1.
  • the oil and gas recovery method of injecting water into the water layer of the oil and gas reservoir can be used independently or in parallel with the steam flooding and pressure flooding oil and gas recovery methods, and is widely used in the oil and gas recovery of various oil and gas reservoirs: the bottom water is heated at a low boiling point and injected with water or formed by water injection alone Bottom water flooding provides low-cost, high-yield innovative oil and gas recovery power for oil and gas reservoirs that have entered the middle and late stages of development, especially cold recovery oil and gas reservoirs, and can replace existing oil and gas production drive methods; for oil and gas reservoirs, especially bottom water For oil and gas reservoirs with insufficient resources, provide bottom water steam flooding and multiple development methods based on bottom water hot water flooding at a temperature lower than the boiling point of water; provide sufficient bottom water for energy-saving and delayed heating of formation water by bottom water steam flooding oil and gas recovery methods resources, auxiliary steam flooding, and enhanced oil and gas reservoir recovery.
  • the numerical simulation results show that the oil production starts when the top temperature of the oil layer is preheated to 100°C.
  • Concentrated thermal recovery method without heating during oil production, the recovery rate is 34%, and the cost of electricity per ton of oil is 1388 yuan/ton; heating without water injection during oil production, the recovery reaches 45%; heating and water injection during oil production, the recovery rate is 62-75% , the electricity cost is 1,140-1,369 yuan/ton, steam drive water injection at the boiling point of water, the recovery rate is 81-86%, and the cost of electricity per ton of oil is reduced to 950-1,194 yuan/ton.
  • the yield can be increased by 28-52%, and the cost of electricity per ton of oil can be reduced by 20-37%. It can be seen that the oil and gas recovery method by injecting water into the water layer of the oil and gas reservoir can effectively improve the degree of production and recovery of the oil reservoir, and the cost of electricity per ton of oil will decrease with the increase of the recovery rate.
  • the preheating oil layer conditions in the implementation cases are the same. They are all heated until the oil top temperature reaches 100°C, then water injection is started and oil production is continued by heating.
  • the production-injection ratio is 1:1.
  • the temperature and pressure change trajectory at the top of the water layer is shown in Figure 2.
  • Case 1 AB 2 -V 4 heats the bottom water at a low temperature below the boiling point of water and injects water (Fig. 4).
  • the bottom water hot water flooding is the main method, the recovery rate is 62%, the electricity cost per ton of oil is 1369 yuan/ton, and the energy per ton of oil is The consumption is 96 ⁇ 10 5 kJ/t.
  • Case 2 AB 2 -V 3 heats the bottom water at a temperature lower than the boiling point of water and injects water (Fig. 3).
  • the bottom water hot water flooding is dominant, the steam flooding effect of the bottom water increases, the fluidity of high-temperature crude oil increases, and the recovery factor increases. Increased to 75%, 30% higher than that without water injection, and the energy consumption per ton of oil is 80 ⁇ 10 5 kJ/t.
  • Case 3 AB 3 -V 1 water boiling point temperature is low to heat bottom water and inject water (Fig. 5), with bottom water steam flooding as the main effect, bottom water hot water flooding and reservoir elastic pressure flooding as supplementary, the recovery rate is 81% , the electricity cost per ton of oil is 950 yuan/ton, and the energy consumption per ton of oil is 67 ⁇ 10 5 kJ/t.
  • Case 4 AB 3 -V 2 water boiling point temperature heats the bottom water at high temperature and injects water (Fig. 6), with bottom water steam flooding as the main effect, bottom water hot water flooding and reservoir elastic pressure flooding as supplementary, the recovery rate is 86% , the electricity cost per ton of oil is 1194 yuan/ton, and the energy consumption per ton of oil is 84 ⁇ 10 5 kJ/t.
  • Each force can be independent or combined in oil and gas. Play an active role in mining.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Un procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz, caractérisé en ce que, dans un procédé de production de pétrole et de gaz, de l'eau est injectée à une certaine vitesse dans une couche d'eau du réservoir de pétrole et de gaz pour compenser l'insuffisance d'eau dans la couche d'eau, améliorer l'énergie motrice d'exploitation de pétrole et de gaz, compenser le déficit énergétique du réservoir de pétrole et de gaz, améliorer le degré d'utilisation de pétrole et de gaz et le degré de récupération de réserves. L'énergie motrice améliorant l'exploitation de pétrole et de gaz fait référence à l'injection d'eau dans la couche d'eau du réservoir de pétrole et de gaz en fonction de caractéristiques d'écoulement d'eau et de caractéristiques de distribution de pression du réservoir de pétrole et de gaz, pour augmenter l'énergie potentielle de la couche d'eau du réservoir de pétrole et de gaz, de telle sorte qu'une interface pétrole-eau soit poussée de façon stable vers le réservoir de pétrole et de gaz pour créer une énergie intégrale de pétrole et de gaz par injection d'eau ; lorsqu'une vitesse d'injection d'eau est supérieure ou égale à une vitesse d'exploitation de pétrole et de gaz ou lorsqu'une quantité d'injection d'eau accumulée est supérieure ou égale à une différence entre une production de pétrole accumulée et une quantité de stockage d'eau dans le réservoir de pétrole et de gaz, une énergie globale de pétrole et de gaz par injection d'eau est créée de l'extérieur vers l'intérieur, et une forte injection d'eau est formée ; au contraire, il est surtout nécessaire de compenser la déficience d'énergie du réservoir et une faible injection d'eau est formée.
PCT/CN2022/130111 2021-11-05 2022-11-04 Procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz WO2023078433A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202280006070.0A CN116438362A (zh) 2021-11-05 2022-11-04 向油气藏水层注水之油气开采方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111305187.2A CN114016979A (zh) 2021-11-05 2021-11-05 向油气藏水层注水之油气开采方法
CN202111305187.2 2021-11-05

Publications (1)

Publication Number Publication Date
WO2023078433A1 true WO2023078433A1 (fr) 2023-05-11

Family

ID=80061245

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/130111 WO2023078433A1 (fr) 2021-11-05 2022-11-04 Procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz

Country Status (2)

Country Link
CN (2) CN114016979A (fr)
WO (1) WO2023078433A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114016979A (zh) * 2021-11-05 2022-02-08 北京红蓝黑能源科技有限公司 向油气藏水层注水之油气开采方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1487170A (zh) * 2003-08-29 2004-04-07 中国石油天然气股份有限公司 水驱黑油油藏注蒸汽热采方法
CN1487171A (zh) * 2003-08-29 2004-04-07 中国石油天然气股份有限公司 聚驱油藏注蒸汽热采方法
CN1834403A (zh) * 2006-04-17 2006-09-20 尤尼斯油气技术（中国）有限公司 一种古潜山油藏注高温空气平衡采油工艺技术
US20100294488A1 (en) * 2009-05-20 2010-11-25 Conocophillips Company Accelerating the start-up phase for a steam assisted gravity drainage operation using radio frequency or microwave radiation
CN103615215A (zh) * 2013-12-12 2014-03-05 于文英 水平井电加热油藏边底水层热采方法
CN110905470A (zh) * 2019-12-17 2020-03-24 于文英 一种利用油气藏底水资源开采油气的方法
CN114016979A (zh) * 2021-11-05 2022-02-08 北京红蓝黑能源科技有限公司 向油气藏水层注水之油气开采方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2013200986B2 (en) * 2006-09-08 2014-11-13 Bp Corporation North America Inc. Hydrocarbon recovery process
US9719009B2 (en) * 2015-03-30 2017-08-01 King Fahd University Of Petroleum And Minerals Oil recovery processes at high salinity carbonate reservoirs
CN205532555U (zh) * 2016-03-28 2016-08-31 中国石油天然气股份有限公司 一种井网结构
CN112240184B (zh) * 2020-10-30 2022-06-03 中国石油天然气股份有限公司 低渗致密油藏立体驱替提高采收率方法及系统
CN112855079B (zh) * 2021-03-29 2023-01-17 北京红蓝黑能源科技有限公司 一种用于加热地层水的浸没式水平井电加热器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1487170A (zh) * 2003-08-29 2004-04-07 中国石油天然气股份有限公司 水驱黑油油藏注蒸汽热采方法
CN1487171A (zh) * 2003-08-29 2004-04-07 中国石油天然气股份有限公司 聚驱油藏注蒸汽热采方法
CN1834403A (zh) * 2006-04-17 2006-09-20 尤尼斯油气技术（中国）有限公司 一种古潜山油藏注高温空气平衡采油工艺技术
US20100294488A1 (en) * 2009-05-20 2010-11-25 Conocophillips Company Accelerating the start-up phase for a steam assisted gravity drainage operation using radio frequency or microwave radiation
CN103615215A (zh) * 2013-12-12 2014-03-05 于文英 水平井电加热油藏边底水层热采方法
CN110905470A (zh) * 2019-12-17 2020-03-24 于文英 一种利用油气藏底水资源开采油气的方法
CN114016979A (zh) * 2021-11-05 2022-02-08 北京红蓝黑能源科技有限公司 向油气藏水层注水之油气开采方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WANG XUE FENG, ZHANG YONG QING, CHEN SHU WEI : "Development Characteristics and Affecting Factors of CIII1 Oil and Gas Reservoir in Tazhong Oil Field", PETROLEUM GEOLOGY & OILFIELD DEVELOPMENT IN DAQING, vol. 20, no. 4, 12 January 2001 (2001-01-12), pages 26 - 29, XP093062386 *
吴兰平等 (WU, LANPING ET AL.): "屋脊式特高含水油藏人工强边水驱技术研究 (Non-official translation: Research on Artificial Strong Edge Water Flooding Technology of Roof-type Ultra-high Water-cut Reservoir)", 石油化工应用 (PETROCHEMICAL INDUSTRY APPLICATION), vol. 38, no. 6, 30 June 2019 (2019-06-30), XP009545934, ISSN: 1673-5285 *

Also Published As

Publication number Publication date
CN114016979A (zh) 2022-02-08
CN116438362A (zh) 2023-07-14

Similar Documents

Publication Publication Date Title
CN103233713B (zh) 油页岩原位水平井压裂化学干馏提取页岩油气方法及工艺
US8820420B2 (en) Method for increasing the recovery of hydrocarbons
WO2023078433A1 (fr) Procédé d'exploitation de pétrole et de gaz par injection d'eau dans une couche d'eau d'un réservoir de pétrole et de gaz
US5456315A (en) Horizontal well gravity drainage combustion process for oil recovery
US3442332A (en) Combination methods involving the making of gaseous carbon dioxide and its use in crude oil recovery
US20060042794A1 (en) Method for high temperature steam
CN110905470B (zh) 一种利用油气藏底水资源开采油气的方法
CN109723423B (zh) 一种利用相变材料支撑裂缝前缘的复合酸压方法
WO2023046187A1 (fr) Procédé d'augmentation des avantages économiques d'un puits unique par exploitation de pétrole et de gaz à l'aide d'une injection de vapeur d'eau de fond
CA2815737C (fr) Drainage par gravite au moyen de valeur a geometrie d'oxygene ajoutee destine a des reservoirs de bitumes endommages
CN106854984A (zh) 一种结合注入热海水增强甲烷开采和二氧化碳封存的天然气水合物置换方法
CN103232852A (zh) 油页岩原位竖井压裂化学干馏提取页岩油气的方法及工艺
CN102758603A (zh) 一种超稠油油藏sagd开采后期注空气开采方法
US20130098607A1 (en) Steam Flooding with Oxygen Injection, and Cyclic Steam Stimulation with Oxygen Injection
WO2019218798A1 (fr) Procédé de développement de pétrole extra-lourd pour renforcer une chambre de vapeur sagd de façon à percer un réservoir de propriété physique faible
CA2820705A1 (fr) Controle de drainage par gravite au moyen de vapeur dans des reservoirs qui fuient
CN103352681A (zh) 厚层稠油油藏直井同步注采生产方法及装置
CN106593368B (zh) 一种改善sagd开发效果的预处理方法
Ruia et al. pplication of SAGD Technology with Fishbone Steam-Injection Horizontal Well in Super Heavy Oil Reservoirs
CN102392624B (zh) 注采分离油井注热采油工艺及装置
WO2023116798A1 (fr) Procédé d'exploitation de pétrole et de gaz par chauffage continu d'eau de formation à une température inférieure au point d'ébullition de l'eau
CN206071538U (zh) 一种蜡卡井氮气速度热流体免修井解卡系统
CN102606123B (zh) 蒸汽驱辅助重力泄油采油方法
CN107191167B (zh) 一种使用尿素改善蒸汽辅助重力泄油开发的方法
Yin Present situation and development trend of oil production technology in unstable waterflooding

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22889454

Country of ref document: EP

Kind code of ref document: A1