WO2016180215A1 - Ct digital core-based microscopic displacement experiment system and microscopic displacement experiment method - Google Patents

Ct digital core-based microscopic displacement experiment system and microscopic displacement experiment method Download PDF

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WO2016180215A1
WO2016180215A1 PCT/CN2016/080031 CN2016080031W WO2016180215A1 WO 2016180215 A1 WO2016180215 A1 WO 2016180215A1 CN 2016080031 W CN2016080031 W CN 2016080031W WO 2016180215 A1 WO2016180215 A1 WO 2016180215A1
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core
displacement
intermediate container
phase intermediate
core holder
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PCT/CN2016/080031
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French (fr)
Chinese (zh)
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杨永飞
姚军
张琦
田同辉
徐耀东
明玉坤
高莹
魏微
赵建林
孙海
张磊
宋文辉
安森友
杜玉山
王军
晁静
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中国石油大学(华东)
中国石油化工股份有限公司胜利油田分公司勘探开发研究院
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Priority to CN201510236593.6A priority Critical patent/CN104819990A/en
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Publication of WO2016180215A1 publication Critical patent/WO2016180215A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material

Abstract

A CT digital core-based microscopic displacement experiment system comprises a core gripper (4) and a microscopic displacement device. The core gripper (4) comprises an inlet end (4-1), an outlet end (4-2), a core area, and a housing. The housing is made of a polyetheretherketone (PEEK) material. The microscopic displacement device comprises an oil-phase intermediate container (2) and an aqueous-phase intermediate container (3) that are parallel, and comprises an advection pump (1) used for driving the oil-phase intermediate container (2) and the aqueous-phase intermediate container (3). Liquid discharge ends of the oil-phase intermediate container (2) and the aqueous-phase intermediate container (3) are each connected to the inlet end (4-1) of the core gripper (4). The core gripper (4) pressurizes a core gripped in the core gripper (4) by means of a hand pump (5). The outlet end (4-2) of the core gripper (4) is provided with a measurement bottle (7). The system is applicable to a small-capacity and small-scale microscopic displacement experiment, and the comprised technical device has a higher operation precision and a higher measurement precision compared with a conventional displacement experiment device.

Description

一种基于CT数字岩心的微观驱替实验系统及微观驱替实验方法Microscopic displacement experimental system based on CT digital core and microscopic displacement experimental method 技术领域Technical field
本发明涉及一种基于CT数字岩心的微观驱替实验系统及微观驱替实验方法,属于石油天然气的物理实验的技术领域。The invention relates to a microscopic displacement experimental system and a microscopic displacement experimental method based on CT digital core, and belongs to the technical field of physical experiments of oil and natural gas.
背景技术Background technique
油田开发的最终目的就是如何从地层孔隙中尽可能多的采出原油,以减少资源浪费。原油存在于地下数千米的沉积岩孔隙中,由于沉积环境以及地层中的流体分布的复杂性,人们没有办法直接大范围的认识地下的油水分布。如何认识地下原油的富集区域和富集形式,如何确定储层中剩余油的分布,是油田开发的主要问题,也是石油上游工业迄今未得到完全解决的重大课题。从微观、小尺度微纳米级别研究剩余油的分布,了解和掌握剩余油的微观形成机理和分布规律,直观再现油藏开发现状,在此基础上开展提高采收率研究,是油藏经营管理决策的重要依据。因此,微观驱替实验以及驱替后岩心内流体的空间分布研究备受国内外各大石油生产国的重视。The ultimate goal of oilfield development is how to extract as much crude oil as possible from the pores of the formation to reduce waste of resources. Crude oil exists in the pores of sedimentary rocks thousands of meters underground. Due to the sedimentary environment and the complexity of fluid distribution in the strata, there is no way to directly understand the distribution of oil and water in the ground. How to understand the enrichment area and enrichment form of underground crude oil, how to determine the distribution of remaining oil in the reservoir is the main problem of oilfield development, and it is also a major issue that the upstream oil industry has not been completely solved so far. The distribution of remaining oil is studied from microscopic and small-scale micro-nano levels. The microscopic formation mechanism and distribution law of remaining oil are understood and mastered, and the status quo of reservoir development is visually reproduced. On this basis, research on enhanced oil recovery is carried out, which is reservoir management. An important basis for decision making. Therefore, microscopic displacement experiments and the spatial distribution of fluids in the core after displacement have attracted the attention of major oil producers at home and abroad.
多孔介质中的流体分布研究常用的方法主要有微观物理模拟和计算机数值模拟两种。计算机数值模拟是通过建立数学模型来研究油藏的物理性质及流体的流动、分布规律。该方法虽然得到广泛的应用,但仍存在明显的不确定性;微观物理模拟就是借助显微镜的放大、录像以及图像处理技术研究储层流体的微观渗流过程,从而揭示多孔介质中流体的微观分布特征。目前,微观物理模拟主要以仿真模型和二维视图为主,但仿真模型不能完全模拟岩心的所有特征,而且流体在岩石孔隙中总是以三维形式分布,单纯从二维的角度观察,很容易带来较大误差。The commonly used methods for fluid distribution in porous media are mainly microphysical simulation and computer numerical simulation. Computer numerical simulation is to establish the mathematical model to study the physical properties of the reservoir and the flow and distribution of the fluid. Although this method has been widely used, there are still obvious uncertainties; microscopic physical simulation is to study the microscopic seepage process of reservoir fluid by means of microscope amplification, video recording and image processing technology, thus revealing the microscopic distribution characteristics of fluid in porous media. . At present, the micro-physical simulation is mainly based on the simulation model and the two-dimensional view, but the simulation model can not fully simulate all the features of the core, and the fluid is always distributed in three-dimensional form in the rock pores. It is easy to observe from a two-dimensional perspective. Brings a big error.
发明内容Summary of the invention
针对现有技术的不足,本发明提供一种基于CT数字岩心的微观驱替实验系统。In view of the deficiencies of the prior art, the present invention provides a microscopic displacement experimental system based on CT digital core.
本发明还提供利用上述实验系统进行微观驱替实验的方法。本发明将常规驱替实验与CT技术有效结合起来,利用CT扫描技术对不同驱替阶段的岩心进行扫描,从而观测岩心孔隙结构,能够实时再现孔隙中流体分布的变化。The present invention also provides a method of performing a microscopic displacement experiment using the above experimental system. The invention effectively combines the conventional displacement experiment with the CT technology, and uses the CT scanning technology to scan the cores of different displacement stages, thereby observing the core pore structure, and realizing the change of the fluid distribution in the pores in real time.
本发明的技术方案如下:The technical solution of the present invention is as follows:
一种基于CT数字岩心的微观驱替实验系统,包括岩心夹持器和微观驱替设备;A microscopic displacement experimental system based on CT digital core, including a core holder and a microscopic displacement device;
所述岩心夹持器,包括进口端、出口端、岩心区、外壳;所述外壳为聚醚醚酮材料(PEEK),PEEK是一种性能优异的特种工程塑料,耐高温(260℃)、机械性能优异、抗辐射、自润滑性好、耐化学品腐蚀等;与金属相比,PEEK材料具有射线透射性,制成的夹持器外壳不会影响CT设备X射线的正常使用;现有传统夹持器外壳为金属材料,X射线无法穿透导致无法利用CT设备扫描获取岩心驱替状态信息,且传统夹持器体型偏大,与CT扫描样品尺寸不符,影响扫描效果;The core holder comprises an inlet end, an outlet end, a core zone and an outer casing; the outer casing is a polyetheretherketone material (PEEK), and the PEEK is a special engineering plastic with excellent performance, high temperature resistance (260 ° C), Excellent mechanical properties, radiation resistance, self-lubricating, chemical corrosion resistance; PEEK material has radio transmission compared with metal, and the resulting holder housing does not affect the normal use of X-rays in CT equipment; The traditional holder shell is made of metal material, and the X-ray cannot penetrate, which makes it impossible to scan the core displacement state information by using CT equipment, and the traditional holder has a large body shape, which is inconsistent with the CT scan sample size, and affects the scanning effect;
所述微观驱替设备,包括并联的油相中间容器和水相中间容器、用于驱替油相中间容器和水相中间容器的平流泵,所述油相中间容器和水相中间容器的出液端均与所述岩心夹持器的进口端相连,所述岩心夹持器通过手摇泵实现对其中夹持的岩心进行加压,在所述岩心夹持器的出口端设置有计量瓶。The microscopic displacement device comprises a parallel oil phase intermediate container and a water phase intermediate container, an advection pump for reversing the oil phase intermediate container and the water phase intermediate container, and the oil phase intermediate container and the water phase intermediate container The liquid end is connected to the inlet end of the core holder, the core holder pressurizes the core clamped therein by a hand pump, and the measuring bottle is arranged at the outlet end of the core holder .
根据本发明优选的,在所述岩心夹持器底部设置有转动座。所述转动座用于在CT扫描过程中将岩心夹持器固定在CT样品台上,驱替实验过程中卸下以便岩心夹持器接入驱替流程。According to a preferred embodiment of the invention, a pivot seat is provided at the bottom of the core holder. The rotating base is used to fix the core holder on the CT sample stage during the CT scanning process, and the displacement during the displacement test is performed so that the core holder can be connected to the displacement process.
根据本发明优选的,所述油相中间容器和水相中间容器的容量均为50-150mL。According to a preferred embodiment of the invention, the oil phase intermediate vessel and the aqueous phase intermediate vessel each have a capacity of from 50 to 150 mL.
根据本发明优选的,在所述手摇泵和岩心夹持器之间的管路上设置有压力表,所述压力 表的量程为10MPa,精度0.25MPa。According to a preferred embodiment of the invention, a pressure gauge is provided on the line between the hand pump and the core holder, the pressure The meter has a range of 10 MPa and an accuracy of 0.25 MPa.
根据本发明优选的,在所述岩心夹持器的进口端设置有进口压力表,所述进口压力表的量程为6MPa,精度0.25MPa。According to a preferred embodiment of the invention, an inlet pressure gauge is provided at the inlet end of the core holder, the inlet pressure gauge having a range of 6 MPa and an accuracy of 0.25 MPa.
利用上述实验系统进行微观驱替实验的方法,包括步骤如下:The method for performing microscopic displacement experiments using the above experimental system includes the following steps:
1)将岩心干燥后安装在所述岩心夹持器中,置于Zeiss MCT-400CT中定位,扫描岩心,获取岩心分析区域三维数字岩心数据体;1) The core is dried and installed in the core holder, placed in the Zeiss MCT-400CT, scanned, and the three-dimensional digital core data body of the core analysis area is obtained;
2)将岩心夹持器接入微观驱替设备,对所述岩心实现单相水相驱替、单相油相驱替或水相、油相多相混合驱替实验;2) Connecting the core holder to the micro-displacement device, realizing single-phase water phase displacement, single-phase oil phase displacement or aqueous phase and oil phase multi-phase mixed displacement experiment for the core;
3)根据驱替实验的研究内容设计观测时刻点,即为驱替时刻,在所述观测时刻暂停对所述岩心驱替,关闭岩心夹持器出口端、进口端、手摇泵;3) designing the observation time point according to the research content of the displacement experiment, that is, the displacement time, suspending the core displacement at the observation time, and closing the core end of the core holder, the inlet end, and the hand pump;
4)将岩心夹持器放入Zeiss MCT-400CT中扫描,获取该驱替时刻时,所述岩心中的流体分布;4) scanning the core holder into the Zeiss MCT-400CT to obtain the fluid distribution in the core at the time of the displacement;
5)重复步骤2)至步骤4),直到按照所述步骤3)所有的设计观测时刻点获取所述岩心中的流体分布。5) Repeat steps 2) through 4) until the fluid distribution in the core is obtained at all design observation time points in accordance with step 3).
根据本发明优选的,所述步骤1)中的岩心的直径为1-2cm,长度为2-4cm。According to a preferred embodiment of the invention, the core in the step 1) has a diameter of 1-2 cm and a length of 2-4 cm.
本发明的优势在于:The advantages of the invention are:
1、本发明采用现场岩心,最大程度还原油藏孔隙结构,模拟油藏流体流动状况,保证实验的可靠性。同时直径1-2cm的岩样大小较直径2.5cm的标准岩样相比,更易于得到精确的CT扫描结果。1. The invention adopts the on-site core to minimize the pore structure of the reservoir, simulate the fluid flow condition of the reservoir, and ensure the reliability of the experiment. At the same time, the size of the rock with a diameter of 1-2 cm is easier to obtain accurate CT scan results than the standard rock sample with a diameter of 2.5 cm.
2、本发明所述实验方法不仅能通过实验测得数据,而且能对不同驱替阶段下岩心内的流体分布进行可视化分析。2. The experimental method of the present invention can not only measure the data through experiments, but also visually analyze the fluid distribution in the core under different displacement stages.
3、本发明所述系统和方法不但可获取多孔介质中流体的三维分布,还保证了测得的流体分布结果的准确性,较二维相比更加符合实际情况。3. The system and method of the present invention not only can obtain the three-dimensional distribution of the fluid in the porous medium, but also ensure the accuracy of the measured fluid distribution result, which is more in line with the actual situation than the two-dimensional.
4、本发明保证了石油行业各类驱替室内实验的进行,可以模拟多种驱替方式、驱替条件。4. The invention ensures the implementation of various types of displacement indoor experiments in the petroleum industry, and can simulate various displacement methods and displacement conditions.
5、本发明所述系统适用于小容量、小规模微观驱替实验,所含技术设备较传统驱替实验设备相比操作精度、测量精度更高。5. The system of the present invention is suitable for small-capacity, small-scale microscopic displacement experiments, and the technical equipment contained therein has higher operational precision and higher measurement accuracy than conventional displacement experimental equipment.
附图说明DRAWINGS
图1为本发明所述驱替系统的结构连接图;Figure 1 is a structural connection diagram of the displacement system of the present invention;
在图1中,1、平流泵;2、油相中间容器;3、水相中间容器;4、岩心夹持器;4-1、进口端;4-2、出口端;5、手摇泵;6、岩心夹持器和手摇泵之间设置的压力表;7、计量瓶。In Figure 1, 1, advection pump; 2, oil phase intermediate container; 3, water phase intermediate container; 4, core holder; 4-1, inlet end; 4-2, outlet end; 5, hand pump ; 6, pressure gauge between the core holder and the hand pump; 7, measuring bottle.
图2为本发明所述驱替实验方法所扫描得到的某时刻的数字岩心中流体分布图。2 is a fluid distribution diagram of a digital core at a certain moment scanned by the displacement test method of the present invention.
具体实施方式detailed description
下面结合实施例和说明书附图对本发明做详细的说明,但不限于此。The present invention will be described in detail below with reference to the embodiments and the drawings, but is not limited thereto.
如图1、图2所示。As shown in Figure 1, Figure 2.
实施例1、Embodiment 1.
一种基于CT数字岩心的微观驱替实验系统,包括岩心夹持器和微观驱替设备;A microscopic displacement experimental system based on CT digital core, including a core holder and a microscopic displacement device;
所述岩心夹持器4,包括进口端4-1、出口端4-2、岩心区、外壳;所述外壳为聚醚醚酮材料(PEEK);The core holder 4 includes an inlet end 4-1, an outlet end 4-2, a core region, and an outer casing; the outer casing is a polyetheretherketone material (PEEK);
所述微观驱替设备,包括并联的油相中间容器2和水相中间容器3、用于驱替油相中间容器2和水相中间容器3的平流泵1,所述油相中间容器2和水相中间容器3的出液端均与所述岩心夹持器4的进口端4-1相连,所述岩心夹持器4通过手摇泵5实现对其中夹持的岩心进行加压,在所述岩心夹持器4的出口端4-2设置有计量瓶7。The microscopic displacement device comprises a parallel oil phase intermediate container 2 and a water phase intermediate container 3, an advection pump 1 for repelling the oil phase intermediate container 2 and the aqueous phase intermediate container 3, the oil phase intermediate container 2 and The liquid outlet end of the aqueous phase intermediate container 3 is connected to the inlet end 4-1 of the core holder 4, and the core holder 4 is used to pressurize the core held therein by the hand pump 5 The metering bottle 7 is provided at the outlet end 4-2 of the core holder 4.
实施例2、Example 2
如实施例1所述的一种基于CT数字岩心的微观驱替实验系统,其区别在于,在所述岩心夹持器4底部设置有转动座。所述转动座用于在CT扫描过程时将岩心夹持器固定在CT样品台上,驱替实验过程中卸下以便岩心夹持器接入驱替流程。 A CT digital core-based micro-displacement experimental system as described in Embodiment 1 is different in that a rotating seat is disposed at the bottom of the core holder 4. The rotating base is used to fix the core holder on the CT sample stage during the CT scanning process, and the displacement is removed during the experiment so that the core holder can be connected to the displacement process.
实施例3、Embodiment 3
如实施例1所述的一种基于CT数字岩心的微观驱替实验系统,其区别在于,所述油相中间容器2和水相中间容器3的容量均为50-150mL。A CT digital core-based microdisplacement experimental system as described in Example 1 differs in that the oil phase intermediate vessel 2 and the aqueous phase intermediate vessel 3 have a capacity of 50-150 mL.
在所述手摇泵5和岩心夹持器4之间的管路上设置有压力表6,所述压力表6的量程为10MPa,精度0.25MPa。A pressure gauge 6 is provided on the line between the hand pump 5 and the core holder 4, and the gauge 6 has a range of 10 MPa and an accuracy of 0.25 MPa.
在所述岩心夹持器4的进口端4-1设置有进口压力表,所述进口压力表的量程为6MPa,精度0.25MPa。An inlet pressure gauge is provided at the inlet end 4-1 of the core holder 4, and the inlet pressure gauge has a measuring range of 6 MPa and an accuracy of 0.25 MPa.
实施例4、Example 4
利用如实施例1-3任意一项所述实验系统进行微观驱替实验的方法,包括步骤如下:A method of performing a microscopic displacement experiment using the experimental system according to any one of embodiments 1-3, comprising the steps of:
1)将岩心干燥后安装在所述岩心夹持器4中,置于Zeiss MCT-400CT中定位,扫描岩心,获取岩心分析区域三维数字岩心数据体;1) The core is dried and installed in the core holder 4, placed in a Zeiss MCT-400CT, scanned, and the three-dimensional digital core data body of the core analysis area is obtained;
2)将岩心夹持器4接入微观驱替设备,对所述岩心实现单相水相驱替、单相油相驱替或水相、油相多相混合驱替实验;2) Connecting the core holder 4 to the micro-displacement device, realizing single-phase water phase displacement, single-phase oil phase displacement or aqueous phase and oil phase multi-phase mixed displacement experiments on the core;
3)根据驱替实验的研究内容设计观测时刻点,即为驱替时刻,在所述观测时刻暂停对所述岩心驱替,关闭岩心夹持器出口端4-2、进口端4-1、手摇泵5;3) Design the observation time point according to the research content of the displacement experiment, that is, the displacement time, suspending the core displacement at the observation time, closing the core end of the core holder 4-2, the inlet end 4-1, Hand pump 5;
4)将岩心夹持器4放入Zeiss MCT-400CT中扫描,获取该驱替时刻时,所述岩心中的流体分布;4) scanning the core holder 4 into the Zeiss MCT-400CT to obtain the fluid distribution in the core at the time of the displacement;
5)重复步骤2)至步骤4),直到按照所述步骤3)所有的设计观测时刻点获取所述岩心中的流体分布。5) Repeat steps 2) through 4) until the fluid distribution in the core is obtained at all design observation time points in accordance with step 3).
所述步骤1)中的岩心的直径为1-2cm,长度为2-4cm。The core in the step 1) has a diameter of 1-2 cm and a length of 2-4 cm.
如图2可知,利用CT扫描可以实时监测到岩心中流体分布。 As can be seen from Figure 2, the fluid distribution in the core can be monitored in real time using CT scanning.

Claims (7)

  1. 一种基于CT数字岩心的微观驱替实验系统,其特征在于,该系统包括岩心夹持器和微观驱替设备;A microscopic displacement experimental system based on CT digital core, characterized in that the system comprises a core holder and a microscopic displacement device;
    所述岩心夹持器,包括进口端、出口端、岩心区、外壳;所述外壳为聚醚醚酮材料,所述微观驱替设备,包括并联的油相中间容器和水相中间容器、用于驱替油相中间容器和水相中间容器的平流泵,所述油相中间容器和水相中间容器的出液端均与所述岩心夹持器的进口端相连,所述岩心夹持器通过手摇泵实现对其中夹持的岩心进行加压,在所述岩心夹持器的出口端设置有计量瓶。The core holder includes an inlet end, an outlet end, a core zone, and an outer casing; the outer casing is a polyetheretherketone material, and the microscopic displacement device includes a parallel phase oil phase intermediate container and a water phase intermediate container, And an advection pump for dispersing the oil phase intermediate container and the water phase intermediate container, wherein the oil phase intermediate container and the liquid phase intermediate container outlet end are connected to the inlet end of the core holder, the core holder The core held therein is pressurized by a hand pump, and a metering bottle is provided at the outlet end of the core holder.
  2. 根据权利要求1所述的一种基于CT数字岩心的微观驱替实验系统,其特征在于,在所述岩心夹持器底部设置有转动座。The CT digital core-based micro-displacement experiment system according to claim 1, wherein a rotating seat is disposed at a bottom of the core holder.
  3. 根据权利要求1所述的一种基于CT数字岩心的微观驱替实验系统,其特征在于,所述油相中间容器和水相中间容器的容量均为50-150mL。The CT digital core-based micro-displacement experiment system according to claim 1, wherein the oil phase intermediate container and the aqueous phase intermediate container have a capacity of 50-150 mL.
  4. 根据权利要求1所述的一种基于CT数字岩心的微观驱替实验系统,其特征在于,在所述手摇泵和岩心夹持器之间的管路上设置有压力表,所述压力表的量程为10MPa,精度0.25MPa。A CT digital core-based micro-displacement experiment system according to claim 1, wherein a pressure gauge is provided on a pipeline between the hand pump and the core holder, and the pressure gauge is The measuring range is 10 MPa and the accuracy is 0.25 MPa.
  5. 根据权利要求1所述的一种基于CT数字岩心的微观驱替实验系统,其特征在于,在所述岩心夹持器的进口端设置有进口压力表,所述进口压力表的量程为6MPa,精度0.25MPa。The CT digital core-based micro-displacement experiment system according to claim 1, wherein an inlet pressure gauge is provided at an inlet end of the core holder, and the inlet pressure gauge has a range of 6 MPa. The accuracy is 0.25 MPa.
  6. 利用如权利要求1-5任意一项所述实验系统进行微观驱替实验的方法,其特征在于,该方法包括步骤如下:A method for performing a microscopic displacement experiment using the experimental system according to any one of claims 1 to 5, characterized in that the method comprises the following steps:
    1)将岩心干燥后安装在所述岩心夹持器中,置于Zeiss MCT-400 CT中定位,扫描岩心,获取岩心分析区域三维数字岩心数据体;1) The core is dried and installed in the core holder, placed in the Zeiss MCT-400 CT, and the core is scanned to obtain a three-dimensional digital core data body in the core analysis area;
    2)将岩心夹持器接入微观驱替设备,对所述岩心实现单相水相驱替、单相油相驱替或水相、油相多相混合驱替实验;2) Connecting the core holder to the micro-displacement device, realizing single-phase water phase displacement, single-phase oil phase displacement or aqueous phase and oil phase multi-phase mixed displacement experiment for the core;
    3)根据驱替实验的研究内容设计观测时刻点,即为驱替时刻,在所述观测时刻暂停对所述岩心驱替,关闭岩心夹持器出口端、进口端、手摇泵;3) designing the observation time point according to the research content of the displacement experiment, that is, the displacement time, suspending the core displacement at the observation time, and closing the core end of the core holder, the inlet end, and the hand pump;
    4)将岩心夹持器放入Zeiss MCT-400 CT中扫描,获取该驱替时刻时,所述岩心中的流体分布;4) placing the core holder in a Zeiss MCT-400 CT to obtain the fluid distribution in the core at the time of the displacement;
    5)重复步骤2)至步骤4),直到按照所述步骤3)所有的设计观测时刻点获取所述岩心中的流体分布。5) Repeat steps 2) through 4) until the fluid distribution in the core is obtained at all design observation time points in accordance with step 3).
  7. 如权利要求6所述的实验方法,其特征在于,所述步骤1)中的岩心的直径为1-2cm,长度为2-4cm。 The experimental method according to claim 6, wherein the core in the step 1) has a diameter of 1-2 cm and a length of 2-4 cm.
PCT/CN2016/080031 2015-05-11 2016-04-22 Ct digital core-based microscopic displacement experiment system and microscopic displacement experiment method WO2016180215A1 (en)

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