CN108827830B - A high-temperature and high-pressure drilling fluid flow performance testing device and method - Google Patents
A high-temperature and high-pressure drilling fluid flow performance testing device and method Download PDFInfo
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Abstract
本发明公开了一种高温高压钻井液流动性能测试装置及方法。该装置主要由流体管道、控温装置1、压力传感器、采样容器17、三相磁力驱动装置18、驱动电机19组成，所述流体管道的垂直管段3、水平管段4和倾斜管段2首尾相接，形成似三角形的钻井液循环系统，旁通管段5两端接在水平管段4上，旁通管段两端之间的水平管段为取样管段6，取样管段连接采样容器17；驱动电机19通过三相磁力驱动装置18驱动流体管道内的钻井液循环流动。利用该装置能够模拟深井和超深井钻井过程中，在高温高压条件下对钻井液上返过程中的流动速度和剪切速率等流动性能进行测试。本发明原理可靠，操作简便，对钻井液流型判断和相关流体计算提供了实验和理论指导。
The invention discloses a high-temperature and high-pressure drilling fluid flow performance testing device and method. The device is mainly composed of a fluid pipeline, a temperature control device 1, a pressure sensor, a sampling container 17, a three-phase magnetic drive device 18, and a drive motor 19. The vertical pipe section 3, the horizontal pipe section 4, and the inclined pipe section 2 of the fluid pipe are connected end to end. , forming a triangular drilling fluid circulation system. Both ends of the bypass pipe section 5 are connected to the horizontal pipe section 4. The horizontal pipe section between the two ends of the bypass pipe section is the sampling pipe section 6. The sampling pipe section is connected to the sampling container 17; the driving motor 19 passes through three The phase magnetic driving device 18 drives the drilling fluid in the fluid pipeline to circulate. This device can be used to simulate the drilling process of deep wells and ultra-deep wells, and test flow properties such as flow speed and shear rate during the return process of drilling fluid under high temperature and high pressure conditions. The invention is reliable in principle and easy to operate, and provides experimental and theoretical guidance for drilling fluid flow pattern judgment and related fluid calculations.
Description
技术领域Technical field
本发明涉及石油勘探开发领域钻井过程中一种高温高压钻井液流动性能测试装置及方法。The invention relates to a high temperature and high pressure drilling fluid flow performance testing device and method in the drilling process in the field of petroleum exploration and development.
背景技术Background technique
在深井及超深井钻井过程中，钻井液在井底受到高温高压的影响，体积较小，流速较慢，随着钻井液从井底返回到地面的过程中，钻井液的温度、压力随井深变浅而变低，钻井液体积变大，流速变快，因而钻井液在上返过程中流动速率和剪切率等流动参数不断变化，对流体计算及钻井液参数选择带来困难。因此，研究钻井液在高温高压条件下流动速率和剪切速率的变化是深井及超深井钻井的一个极其重要的问题。During the drilling process of deep wells and ultra-deep wells, the drilling fluid is affected by high temperature and pressure at the bottom of the well. The volume is small and the flow rate is slow. As the drilling fluid returns from the bottom of the well to the surface, the temperature and pressure of the drilling fluid increase with the depth of the well. As the drilling fluid becomes shallower and lower, the drilling fluid volume becomes larger and the flow velocity becomes faster. Therefore, flow parameters such as flow rate and shear rate continue to change during the upward return process of the drilling fluid, which brings difficulties to fluid calculation and drilling fluid parameter selection. Therefore, studying the changes in flow rate and shear rate of drilling fluid under high temperature and high pressure conditions is an extremely important issue in deep well and ultra-deep well drilling.
钻井液在井下处于高温高压的状态，流动性能受高温高压影响很大，而当前国内对钻井液流动性能测试的实验方法都是针对常温常压下钻井液的流动性能测试或在高温高压釜中进行静止状态下钻井液的流变性能测试。Drilling fluid is in a state of high temperature and high pressure downhole, and its flow performance is greatly affected by high temperature and pressure. However, the current domestic experimental methods for testing the flow performance of drilling fluid are all aimed at testing the flow performance of drilling fluid at normal temperature and pressure or in high temperature and high pressure autoclaves. The rheological properties of drilling fluids were tested under static conditions.
专利“一种高温高压流变性能测试仪”（CN201594064U）主要通过高温高压釜进行钻井液流变性能测试，未考虑钻井液处于流动循环状态。专利“水平井偏心环空顶替参数优化设计方法”（CN103277067）在常温常压下通过模拟水平井偏心环空状态测量钻井液的流变参数，未考虑钻井液处于高温高压状态。专利“异型管式钻井液流变性测量方法”（CN103076263A）通过钻井液在异型管中流动，进行钻井液的流变性自动化在线测量，也未考虑钻井液处于高温高压状态。The patent "A high-temperature and high-pressure rheological property tester" (CN201594064U) mainly tests the rheological properties of drilling fluids through high-temperature and high-pressure autoclave, without considering that the drilling fluid is in a flow circulation state. The patented "Horizontal Well Eccentric Annulus Replacement Parameter Optimization Design Method" (CN103277067) measures the rheological parameters of the drilling fluid by simulating the eccentric annulus state of the horizontal well under normal temperature and pressure, without considering that the drilling fluid is in a high temperature and high pressure state. The patented "Special-shaped Tube Drilling Fluid Rheology Measurement Method" (CN103076263A) performs automated online measurement of the rheology of the drilling fluid by flowing the drilling fluid in the special-shaped tube, without considering that the drilling fluid is in a high-temperature and high-pressure state.
总的来说，目前室内实验设备没有全面考虑在深井及超深井中钻井液同时处于流动和高温高压两个状态。因此，建立实际井下钻井液流动状态进行流动性能测试的实验装置及方法，对于深井及超深井钻井过程中钻井液的流动性能研究具有十分重要的意义。In general, current indoor experimental equipment does not fully consider the conditions in deep wells and ultra-deep wells where the drilling fluid is in both flowing and high-temperature and high-pressure states. Therefore, establishing an experimental device and method for testing the flow performance of actual downhole drilling fluid flow conditions is of great significance for the study of the flow properties of drilling fluid during the drilling process of deep wells and ultra-deep wells.
发明内容Contents of the invention
本发明的目的在于提供一种高温高压钻井液流动性能测试装置，该装置原理可靠，操作简便，能够模拟深井和超深井钻井过程中，在高温高压条件下对钻井液上返过程中的流动速度和剪切速率等流动性能进行测试。The object of the present invention is to provide a high-temperature and high-pressure drilling fluid flow performance testing device. The device is reliable in principle and easy to operate. It can simulate the flow rate of drilling fluid in the process of drilling fluid up and down under high-temperature and high-pressure conditions during the drilling process of deep wells and ultra-deep wells. Flow properties such as shear rate and shear rate were tested.
本发明的另一目的还在于提供利用上述装置对高温高压钻井液流动性能进行测试的方法，该方法原理可靠，操作简便，同时考虑了井筒流体压力、温度随钻井液上返而降低，流速变快等因素，较为完善地考虑了地层条件、流动条件与实际工况对钻井液循环的流动速率和剪切速率的影响。Another object of the present invention is to provide a method for testing the flow properties of high-temperature and high-pressure drilling fluids using the above-mentioned device. The method is reliable in principle and easy to operate. At the same time, it takes into account that the wellbore fluid pressure and temperature decrease as the drilling fluid returns and the flow rate changes. factors such as speed, and the influence of formation conditions, flow conditions and actual working conditions on the flow rate and shear rate of drilling fluid circulation is relatively completely considered.
为达到以上技术目的，本发明采用以下技术方案。In order to achieve the above technical objectives, the present invention adopts the following technical solutions.
一种高温高压钻井液流动性能测试装置，包括流体管道单元、流体管道加热控温单元、压力采集单元、取样单元、泄压单元、三相磁力驱动单元、注气单元和注液单元。A high-temperature and high-pressure drilling fluid flow performance testing device includes a fluid pipeline unit, a fluid pipeline heating and temperature control unit, a pressure acquisition unit, a sampling unit, a pressure relief unit, a three-phase magnetic drive unit, a gas injection unit and a liquid injection unit.
所述流体管道单元包括垂直管段、水平管段、倾斜管段、旁通管段和取样管段，管径均为25mm，不锈钢材质，最大承压为150MPa，耐温极限为250℃。垂直管段、水平管段和倾斜管段首尾相接，形成似三角形的钻井液循环系统，旁通管段两端分别接在水平管段上，取样管段为水平管段的一部分。The fluid pipeline unit includes a vertical pipe section, a horizontal pipe section, an inclined pipe section, a bypass pipe section and a sampling pipe section. The pipe diameter is 25mm, made of stainless steel, with a maximum pressure of 150MPa and a temperature resistance limit of 250°C. The vertical pipe section, the horizontal pipe section and the inclined pipe section are connected end to end to form a triangular drilling fluid circulation system. Both ends of the bypass pipe section are connected to the horizontal pipe section respectively, and the sampling pipe section is part of the horizontal pipe section.
所述流体管道加热控温单元包括总功率为100KW的不锈钢加热圈、Pt100温度传感器、保温层，保温层及不锈钢加热圈覆盖于整个流动管段上。The fluid pipeline heating and temperature control unit includes a stainless steel heating ring with a total power of 100KW, a Pt100 temperature sensor, an insulation layer, and the insulation layer and stainless steel heating ring cover the entire flow pipe section.
所述压力采集单元包括4套量程为0~120MPa，精度为±0.2%FS的316L膜片的带通讯接口的PID智能仪表，在垂直管段上部和下部各安装一套，在水平管段与旁通管段的连接处各安装一套。The pressure acquisition unit includes 4 sets of 316L diaphragm PID intelligent instruments with communication interfaces with a range of 0~120MPa and an accuracy of ±0.2% FS. One set is installed on the upper and lower parts of the vertical pipe section, and one set is installed on the horizontal pipe section and the bypass. One set is installed at each joint of the pipe sections.
所述取样单元包括取样管段、3只200℃/100MPa的高温高压阀门和500mL/100MPa的采样容器。在水平管段与旁通管段连接处之间放置2只高温高压阀门，两阀门之间为取样管段，取样管段与采样容器通过管段相连，在取样管段与采样容器通过一只高温高压阀门相连。The sampling unit includes a sampling pipe section, three 200°C/100MPa high temperature and high pressure valves and a 500mL/100MPa sampling container. Place two high-temperature and high-pressure valves between the connection between the horizontal pipe section and the bypass pipe section. Between the two valves is the sampling pipe section. The sampling pipe section and the sampling container are connected through the pipe section. The sampling pipe section and the sampling container are connected through a high-temperature and high-pressure valve.
所述泄压单元包括旁通管段和1只200℃/100MPa的高温高压阀门。The pressure relief unit includes a bypass pipe section and a 200°C/100MPa high temperature and high pressure valve.
所述三相磁力驱动单元包括气、液、固三相磁力驱动装置和驱动电机，三相磁力驱动装置工作压力为100MPa，工作温度为200℃。三相磁力驱动装置的一端分别连接气体增压机和氮气瓶、液体增压泵和清水池，另一端连接流体管道，驱动电机通过变频调速可改变流体循环速度。The three-phase magnetic drive unit includes a gas, liquid and solid three-phase magnetic drive device and a drive motor. The working pressure of the three-phase magnetic drive device is 100MPa and the operating temperature is 200°C. One end of the three-phase magnetic drive device is connected to the gas booster, nitrogen bottle, liquid booster pump and clean water tank, and the other end is connected to the fluid pipeline. The drive motor can change the fluid circulation speed through frequency conversion speed regulation.
所述注气单元包括氮气瓶、量程为0~100MPa的气体增压机和50℃/100MPa的高压阀门。氮气瓶与气体增压机通过管线相连，气体增压机通过管线和阀门与三相磁力驱动装置相连。The gas injection unit includes a nitrogen bottle, a gas booster with a range of 0~100MPa, and a high-pressure valve of 50°C/100MPa. The nitrogen bottle is connected to the gas booster through pipelines, and the gas booster is connected to the three-phase magnetic drive device through pipelines and valves.
所述注液单元包括清水池、量程为0~100MPa的液体增压泵和50℃/100MPa的高压阀门。清水池与液体增压泵通过管线相连，液体增压泵通过管线和阀门与三相磁力驱动装置相连。The liquid injection unit includes a clear water tank, a liquid booster pump with a range of 0~100MPa, and a high-pressure valve of 50°C/100MPa. The clean water pool is connected to the liquid booster pump through pipelines, and the liquid booster pump is connected to the three-phase magnetic drive device through pipelines and valves.
利用上述装置对高温高压钻井液流动性能进行测试的方法，依次包括以下步骤：The method of testing the flow properties of high-temperature and high-pressure drilling fluid using the above device includes the following steps:
（1）将钻井液充满流体管道并通过三相磁力驱动装置使其以初速度V初的速度循环流动，其循环流动方向为垂直管段—倾斜管段—水平管段—垂直管段，开启气体增压机，液体增压泵，以一定的气液比升高压力，通过控温装置升高温度，使流体管道内钻井液达到最深地层处的温度和压力，并通过三相磁力驱动装置使钻井液以V0的速度循环流动；(1) Fill the fluid pipe with drilling fluid and circulate it through the three-phase magnetic drive device at an initial speed V. The direction of the circulation flow is vertical pipe section - inclined pipe section - horizontal pipe section - vertical pipe section, and start the gas booster. , a liquid booster pump, which raises the pressure with a certain gas-liquid ratio, raises the temperature through the temperature control device, so that the drilling fluid in the fluid pipeline reaches the temperature and pressure of the deepest formation, and uses the three-phase magnetic drive device to make the drilling fluid Circular flow at a speed of V 0 ;
（2）通过三相磁力驱动装置测量钻井液此时流动的剪切速率γ0；(2) Use the three-phase magnetic drive device to measure the shear rate γ 0 of the drilling fluid flowing at this time;
（3）通过采样容器从取样管段中取出一部分钻井液，测试并记录钻井液相应流变参数，并通过取样过程降低流体管道中的压力，通过控温装置降低流体管道中的温度，从而建立地层中下一特定深度的压力和温度条件，通过相应计算得到该深度的速度V1，并通过三相磁力驱动装置使钻井液的循环速度达到V1，测量钻井液在该深度时的剪切速率γ1；(3) Take out a portion of the drilling fluid from the sampling pipe section through the sampling container, test and record the corresponding rheological parameters of the drilling fluid, reduce the pressure in the fluid pipeline through the sampling process, and reduce the temperature in the fluid pipeline through the temperature control device, thereby establishing the formation According to the pressure and temperature conditions at the next specific depth, the velocity V 1 at that depth is obtained through corresponding calculations, and the circulation speed of the drilling fluid reaches V 1 through the three-phase magnetic drive device, and the shear rate of the drilling fluid at this depth is measured. γ 1 ;
（4）重复上述（3）过程，直到钻井液达到地面的温度和压力。(4) Repeat the above process (3) until the drilling fluid reaches the surface temperature and pressure.
与现有技术相比，本发明具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
在模拟高温高压钻井液循环过程中，同时考虑了井筒流体压力、温度随钻井液上返而降低，流速变快等因素，较为完善地考虑了地层条件、流动条件与实际工况对钻井液循环的流动速率和剪切速率的影响，对钻井液流型判断和相关流体计算提供了实验和理论指导。In the process of simulating the circulation of high-temperature and high-pressure drilling fluid, factors such as wellbore fluid pressure and temperature, which decrease as the drilling fluid returns, and the flow rate becomes faster, are also taken into account. The effects of formation conditions, flow conditions and actual working conditions on drilling fluid circulation are more completely considered. The influence of flow rate and shear rate provides experimental and theoretical guidance on the judgment of drilling fluid flow pattern and related fluid calculations.
附图说明Description of the drawings
图1是高温高压钻井液流动性能测试装置的结构示意图。Figure 1 is a schematic structural diagram of a high-temperature and high-pressure drilling fluid flow performance testing device.
图中：1—控温装置，2—倾斜管段，3—垂直管段，4—水平管段，5—旁通管段，6—取样管段，7、8、9、10—高温高压阀门，11、12—高压阀门，13、14、15、16—压力传感器，17—采样容器，18—三相磁力驱动装置，19—驱动电机，20—氮气瓶，21—气体增压机，22—液体增压泵，23—清水池。In the picture: 1—temperature control device, 2—inclined pipe section, 3—vertical pipe section, 4—horizontal pipe section, 5—bypass pipe section, 6—sampling pipe section, 7, 8, 9, 10—high temperature and high pressure valves, 11, 12 —High-pressure valve, 13, 14, 15, 16 — pressure sensor, 17 — sampling container, 18 — three-phase magnetic drive device, 19 — drive motor, 20 — nitrogen bottle, 21 — gas booster, 22 — liquid booster Pump, 23—Clear pool.
具体实施方式Detailed ways
下面根据附图和实施例进一步说明本发明。The present invention will be further described below based on the drawings and examples.
参看图1。See Figure 1.
一种高温高压钻井液流动性能测试装置，由流体管道、控温装置1、压力传感器13—16、采样容器17、三相磁力驱动装置18、驱动电机19、气体增压机21、氮气瓶20、液体增压泵22、清水池23组成。A high-temperature and high-pressure drilling fluid flow performance testing device, consisting of a fluid pipeline, a temperature control device 1, pressure sensors 13-16, a sampling container 17, a three-phase magnetic drive device 18, a drive motor 19, a gas booster 21, and a nitrogen bottle 20 , liquid booster pump 22, and clear pool 23.
所述流体管道包括垂直管段3、水平管段4、倾斜管段2、旁通管段5，垂直管段3、水平管段4和倾斜管段2首尾相接，形成似三角形的钻井液循环系统，旁通管段5两端分别接在水平管段4上，旁通管段两端之间的水平管段为取样管段6；所述控温装置1包括加热圈、保温层和温度传感器，加热圈、保温层覆盖于整个流体管道上；所述垂直管段3上下两端、所述水平管段4与旁通管段5的左右连接处分别安装压力传感器13—16；所述取样管段6连接采样容器17，取样管段6两端、取样管段6与采样容器17之间、旁通管段5上均设置高温高压阀门7—10；所述三相磁力驱动装置18分别通过高压阀门12、11连接气体增压机21和氮气瓶20、液体增压泵22和清水池23，还连接驱动电机19，驱动电机通过三相磁力驱动装置18驱动流体管道内的钻井液循环流动。The fluid pipeline includes a vertical pipe section 3, a horizontal pipe section 4, an inclined pipe section 2, and a bypass pipe section 5. The vertical pipe section 3, the horizontal pipe section 4, and the inclined pipe section 2 are connected end to end to form a triangular drilling fluid circulation system. The bypass pipe section 5 Both ends are respectively connected to the horizontal pipe section 4, and the horizontal pipe section between the two ends of the bypass pipe section is the sampling pipe section 6; the temperature control device 1 includes a heating ring, an insulation layer and a temperature sensor, and the heating ring and insulation layer cover the entire fluid On the pipeline; pressure sensors 13-16 are respectively installed at the upper and lower ends of the vertical pipe section 3 and at the left and right connections of the horizontal pipe section 4 and the bypass pipe section 5; the sampling pipe section 6 is connected to the sampling container 17, and both ends of the sampling pipe section 6, High-temperature and high-pressure valves 7-10 are installed between the sampling pipe section 6 and the sampling container 17 and on the bypass pipe section 5; the three-phase magnetic driving device 18 is connected to the gas booster 21 and the nitrogen cylinder 20 and 20 through the high-pressure valves 12 and 11 respectively. The liquid booster pump 22 and the clean water tank 23 are also connected to the driving motor 19, which drives the drilling fluid in the fluid pipeline to circulate through the three-phase magnetic driving device 18.
安装在垂直管段3上的压力传感器13和14，可采集垂直管段3上不同位置的压力数据，安装在水平管段4与旁通管段5的连接处的压力传感器15和16，可采集水平管段4上不同位置的压力数据。The pressure sensors 13 and 14 installed on the vertical pipe section 3 can collect pressure data at different locations on the vertical pipe section 3. The pressure sensors 15 and 16 installed at the connection between the horizontal pipe section 4 and the bypass pipe section 5 can collect the pressure data on the horizontal pipe section 4. pressure data at different locations.
所述三相磁力驱动装置驱动钻井液的循环流动方向为垂直管段3—倾斜管段2—水平管段4—垂直管段3。The three-phase magnetic driving device drives the drilling fluid in a circular flow direction of vertical pipe section 3 - inclined pipe section 2 - horizontal pipe section 4 - vertical pipe section 3.
所述驱动电机19通过变频调速改变流体循环速度，所述三相磁力驱动装置18采集钻井液流动速率和剪切速率数据。The driving motor 19 changes the fluid circulation speed through frequency conversion speed regulation, and the three-phase magnetic driving device 18 collects drilling fluid flow rate and shear rate data.
在取样管段两端设置高温高压阀门7、8，取样管段6与采样容器17之间也有高温高压阀门10，关闭高温高压阀门7、8，打开高温高压阀门10可将取样管段中6中的钻井液放入采样容器17中，用于分析钻井液相关特性参数。High-temperature and high-pressure valves 7 and 8 are provided at both ends of the sampling pipe section. There is also a high-temperature and high-pressure valve 10 between the sampling pipe section 6 and the sampling container 17. Close the high-temperature and high-pressure valves 7 and 8, and open the high-temperature and high-pressure valve 10 to remove the wells in 6 in the sampling pipe section. The liquid is put into the sampling container 17 for analyzing the relevant characteristic parameters of the drilling fluid.
所述旁通管段5上安装高温高压阀门9，当需要泄压时打开高温高压阀门9进行泄压。A high-temperature and high-pressure valve 9 is installed on the bypass pipe section 5. When pressure relief is required, the high-temperature and high-pressure valve 9 is opened to relieve pressure.
所述氮气瓶20、气体增压机21通过管线、高压阀门12与三相磁力驱动装置18相连，可对循环管段内的流体流动压力进行控制。The nitrogen bottle 20 and gas booster 21 are connected to the three-phase magnetic drive device 18 through pipelines and high-pressure valves 12, which can control the fluid flow pressure in the circulation pipe section.
所述清水池23、液体增压泵22通过管线、高压阀门11与三相磁力驱动装置18相连，可对循环管段内的流体流动压力进行控制。The clean water pool 23 and the liquid booster pump 22 are connected to the three-phase magnetic drive device 18 through pipelines and high-pressure valves 11, and can control the fluid flow pressure in the circulation pipe section.
利用上述装置对高温高压钻井液流动性能进行测试的方法，依次包括以下步骤：The method of testing the flow properties of high-temperature and high-pressure drilling fluid using the above device includes the following steps:
a、实验前期准备：a. Preparation for the experiment:
安装水平管段、垂直管段和倾斜管段及相关装置，检查氮气瓶和储水池中流体是否充足；将所有阀门均设为关闭状态；检查所有仪器仪表是否正常工作。Install horizontal pipe sections, vertical pipe sections, inclined pipe sections and related devices, check whether there is sufficient fluid in nitrogen bottles and storage pools; set all valves to closed state; check whether all instruments and meters are working properly.
b、开启实验设备：b. Turn on the experimental equipment:
打开气体增压机、液体增压泵与三相磁力驱动装置连接的阀门，同时打开水平管段上的两个阀门，将钻井液充满流动管道并通过三相磁力驱动装置使其循环流动，通过气体增压机和液体增压泵将循环管段内的流体压力增压到最深地层压力；开启控温装置开关，对管道内流体加热到设定温度；通过驱动电机带动三相磁力驱动装置将管道中流体的流速增加到设定速度，关闭气体增压机、液体增压泵，关闭控温装置。Open the valves connecting the gas booster, liquid booster pump and three-phase magnetic drive device, and open the two valves on the horizontal pipe section at the same time. Fill the flow pipe with drilling fluid and circulate it through the three-phase magnetic drive device. Through the gas The booster and liquid booster pump boost the fluid pressure in the circulating pipe section to the deepest formation pressure; turn on the temperature control device switch to heat the fluid in the pipeline to the set temperature; drive the motor to drive the three-phase magnetic drive device to The flow rate of the fluid increases to the set speed, the gas booster and liquid booster pump are turned off, and the temperature control device is turned off.
c、进行高温高压钻井液流动性能测试实验：c. Conduct high-temperature and high-pressure drilling fluid flow performance test experiments:
当4个压力传感器的压力数据及倾斜管段控温装置的温度数据稳定且等于设定的地层最深处的温度、压力时，记录此时的温度压力数据和三相磁力驱动装置得到的管段内流体流动的流动速率和剪切速率作为第一组数据。然后通过每次均匀地从取样管段取出一定体积的钻井液用来模拟钻井液在上返过程中所受压力降低的实际工况，通过散热来模拟钻井液在上返过程中地层温度降低的实际工况，通过取样容器中的流体气、液、固含量分析每组实验的钻井液特性参数，通过三相磁力驱动装置增加循环管段内流体速度模拟钻井液在上返过程中流速变快的实际工况，每取出一次钻井液，调节一次钻井液循环流速、压力和温度，记录所有压力、温度、流动速率和剪切速率数据作为一组实验数据，直到井筒流体压力降低到设定值为止，实验结束。When the pressure data of the four pressure sensors and the temperature data of the inclined pipe section temperature control device are stable and equal to the set temperature and pressure at the deepest part of the formation, record the temperature and pressure data at this time and the fluid in the pipe section obtained by the three-phase magnetic drive device. The flow rate and shear rate of the flow serve as the first set of data. Then, a certain volume of drilling fluid is taken out evenly from the sampling pipe section each time to simulate the actual working conditions of the pressure reduction of the drilling fluid during the upward return process, and the actual decrease in formation temperature of the drilling fluid during the upward return process is simulated through heat dissipation. Working conditions, the drilling fluid characteristic parameters of each set of experiments were analyzed through the fluid gas, liquid, and solid contents in the sampling container, and the three-phase magnetic drive device was used to increase the fluid velocity in the circulating pipe section to simulate the actual flow rate of the drilling fluid becoming faster during the upward return process. Working conditions, each time the drilling fluid is taken out, the drilling fluid circulation flow rate, pressure and temperature are adjusted, and all pressure, temperature, flow rate and shear rate data are recorded as a set of experimental data until the wellbore fluid pressure is reduced to the set value. The experiment is over.
d、实验结果整理：d. Compilation of experimental results:
整理及分析所采集数据。Organize and analyze collected data.
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| CN112324369B (en) * | 2019-08-05 | 2023-04-25 | 创升益世(东莞)智能自控有限公司 | Real-time on-site monitoring management system for performance of oil-based water-based drilling fluid |
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