WO2020249027A1 - Temperature-controlled automated online drilling fluid rheology measurement apparatus - Google Patents
Temperature-controlled automated online drilling fluid rheology measurement apparatus Download PDFInfo
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- WO2020249027A1 WO2020249027A1 PCT/CN2020/095465 CN2020095465W WO2020249027A1 WO 2020249027 A1 WO2020249027 A1 WO 2020249027A1 CN 2020095465 W CN2020095465 W CN 2020095465W WO 2020249027 A1 WO2020249027 A1 WO 2020249027A1
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- 238000005553 drilling Methods 0.000 title claims abstract description 47
- 239000012530 fluid Substances 0.000 title claims abstract description 46
- 238000000518 rheometry Methods 0.000 title claims abstract description 30
- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
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- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/08—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow
Definitions
- the invention belongs to the field of drilling fluid rheology measuring devices, in particular to an automatic online measuring device for drilling fluid rheology, which is suitable for automatic online measurement of drilling fluid rheological properties on site.
- the rheology of drilling fluid generally includes fluid viscosity, static shear force, dynamic shear force and shear dilution characteristics.
- the control and adjustment of these rheological properties have a very important relationship with the improvement of drilling speed and downhole safety.
- the rheology of the drilling fluid is related to: (1) the ability of the drilling fluid to carry drill cuttings and clean the wellbore; (2) the suspension capacity; (3) the stabilizing effect on the borehole wall; (4) the optimization design of drilling parameters-bit water Horsepower design and calculation of cycle pressure loss, etc. Therefore, the measurement and research of drilling fluid rheology and rheology have been paid much attention.
- the paradigm viscometer is mainly used to measure the rheology of drilling fluid in oil drilling field.
- the basic principle is: the motor drives the outer cylinder to rotate at a constant speed through the transmission device. With the help of the viscosity of the measured liquid, a certain torque acts on the inner cylinder to drive the inner cylinder connected to the torsion spring to rotate by an angle. The effect is calculated by this angle. Shear stress on the inner cylinder. Measure the shear stress at different constant speeds to calculate the rheological parameters of the drilling fluid.
- This instrument has a wide measurement range and is convenient for measurement. It has been an important instrument for on-site drilling fluid engineers for many years; however, this instrument is a manual measurement instrument used to guide the field.
- the purpose of the present invention is to provide a temperature-controlled drilling fluid rheology automatic online measurement device with accurate measurement data and capable of measuring on-site drilling fluid rheology change curves under different temperature conditions in view of the problems in the prior art.
- a temperature-controlled automatic on-line measuring device for rheology of drilling fluids including a pump, a heating device, a flow meter, a rectangular section tube, and a pressure sensor; wherein: two rectangular section tubes with different section areas are connected by a pipeline, and the two rectangular sections Pressure sensors are installed at the inlet and outlet ends of the pipe respectively; conversion joints are connected to both ends of each rectangular section pipe, the internal flow channels of the four conversion joints are streamlined, and the cross-sectional area of each conversion joint is equal; the four pressure sensors and The flowmeter is connected to the data collector and the data processing system through a signal line.
- the above scheme further includes:
- the section height of the two rectangular section tubes is the same, and the width is an integer multiple of the difference.
- the section heights of the two rectangular section tubes are both 2.75mm and the widths are 7cm and 14cm respectively; the distance between the pressure sensor on each rectangular section tube and the inlet and outlet ends of the corresponding rectangular section tube is not less than 10cm, and the distance between each pair of pressure sensors is 50cm .
- the pump is a constant flow pump, and the flow meter is a Coriolis mass flow meter.
- the heating device is an electric heating container or a water bath heating container or a self-controlling pipeline electric heating tape.
- the pressure sensor is a flat membrane pressure sensor.
- the device involved in the present invention adopts the method of changing the width of the rectangular section tube to change the velocity gradient, and can measure the stress value under two velocity gradients at the same time, so there is no need to change the flow rate of the pump to adjust the velocity gradient, which is beneficial to the flow Continuous measurement of denaturation; in addition, the device of the invention uses constant flow pump sampling instead of manual sampling, which reduces the labor intensity of testers and improves the working environment of field testers; at the same time, a heating device is used to heat the drilling fluid, which can achieve continuous measurement. The rheology of drilling fluid at temperature, the required temperature can be adjusted by the heating device.
- the device of the invention solves the problems existing in conventional drilling fluid rheology measurement, improves measurement accuracy, and realizes automatic real-time measurement of drilling fluid rheology at different temperatures.
- Figure 1 is a schematic diagram of an automatic online measuring device for temperature-controlled drilling fluid rheology
- the conversion joint 9 is connected to the drilling fluid container to form a circulation.
- the digital acquisition and processor 14 collects the signals of the flow meter 3 and the pressure sensor into the computer 15.
- the rectangular section tube 5 and the rectangular section tube 8 are two rectangular section tubes with a height of 2.75mm and a length of 70cm, but the widths of the two rectangular section tubes are different, being 7cm and 14cm respectively;
- the pressure sensors are all flat membrane pressure sensors, and each pair of pressure sensors is 50cm apart, and the pressure loss of the rectangular section tube is measured separately;
- the four conversion joints are all joints connecting rectangular cross-section pipes and pipelines.
- the internal flow channel of this joint is streamlined, and the cross-sectional area of each joint is equal, which is used to realize the constant flow rate deformation of the fluid.
- rheological parameters such as plastic viscosity, dynamic shear stress, apparent viscosity, flow pattern index, and consistency coefficient of the drilling fluid, and continuously measure the instantaneous values of these rheological parameters. It can measure and record the rheological parameters of the drilling fluid at the corresponding temperature in real time, and realize the automatic online measurement of the rheological parameters of the drilling fluid at different temperatures.
- the present invention Compared with the prior art, the present invention has the following technical advantages: firstly, it can continuously measure the rheology of drilling fluid at different temperatures; secondly, it uses a constant flow pump as a continuous sampling tool instead of manual sampling; thirdly, the present invention uses two Two rectangular cross-section tubes connected in series with the same thickness and same length but different widths can produce two different instantaneous velocity gradients in the two rectangular cross-section tubes under the condition of constant flow of the constant flow pump; fourth, use The Coriolis mass flowmeter measures the instantaneous value of the flow through the rectangular cross-section tubes in series, and calculates the instantaneous amount of the velocity gradient in the two rectangular cross-section tubes according to the geometric dimensions and flow rates of the two rectangular cross-section tubes; A flat membrane pressure sensor is installed at the two ends of the rectangular section pipe above 10cm to measure the instantaneous pressure loss in the two rectangular section pipes, and calculate the pressure loss of the two pipe walls according to the instantaneous pressure loss in the two rectangular section pipes.
- the instantaneous amount of shear stress calculates the instantaneous amount of rheological parameters of drilling fluid according to the instantaneous values of shear stress under two different velocity gradients; seventh, continuously and automatically measure and record the instantaneous amount of rheological parameters of drilling fluid at different temperatures, Realize automatic online measurement of drilling fluid rheology.
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Abstract
A temperature-controlled automated online drilling fluid rheology measurement apparatus, relating to the field of drilling fluid rheology measurements. The apparatus comprises a pump (1), a heating means (2), a flow meter (3), and two regular-cross-section pipes (5, 8) having different cross-section areas and connected by means of a pipeline. Two pressure sensors (10, 11, 12, 13) are respectively provided on inlet and outlet end portions of each of the two regular-cross-section pipes (5, 8). The apparatus solves problems existing in conventional drilling fluid rheology measurements, improves the measurement precision, and implements automated real-time measurement of drilling fluid rheologies at different temperatures.
Description
本发明属于钻井液流变性测量装置领域，尤其涉及一种钻井液流变性的自动化在线测量装置，适用于现场钻井液流变性能的自动化在线测量。The invention belongs to the field of drilling fluid rheology measuring devices, in particular to an automatic online measuring device for drilling fluid rheology, which is suitable for automatic online measurement of drilling fluid rheological properties on site.
钻井液的流变性一般包括流体的粘度、静切力、动切力和剪切稀释特性等。这些流变性的掌握和调整，与提高钻井速度和井下安全有很重要的关系。钻井液流变性关系到：(1)钻井液携带钻屑、清洁井眼的能力；(2)悬浮能力；(3)对井壁的稳定作用；(4)钻井参数的优化设计——钻头水马力设计和循环压耗的计算等等。所以钻井液流变学及流变性的测量研究一直深受重视。The rheology of drilling fluid generally includes fluid viscosity, static shear force, dynamic shear force and shear dilution characteristics. The control and adjustment of these rheological properties have a very important relationship with the improvement of drilling speed and downhole safety. The rheology of the drilling fluid is related to: (1) the ability of the drilling fluid to carry drill cuttings and clean the wellbore; (2) the suspension capacity; (3) the stabilizing effect on the borehole wall; (4) the optimization design of drilling parameters-bit water Horsepower design and calculation of cycle pressure loss, etc. Therefore, the measurement and research of drilling fluid rheology and rheology have been paid much attention.
目前石油钻井现场主要采用范式黏度计测量钻井液的流变性。其基本原理是：电机经传动装置带动外筒恒速旋转，借助于被测液体的粘滞性作用于内筒一定的扭矩，带动与扭力弹簧相连的内筒旋转一个角度，通过这个角度计算作用于内筒上剪切应力。测量不同恒定转速下的剪切应力从而计算出钻井液的流变参数。这种仪器测量范围宽，测量方便，多少年来一直是现场钻井液工程师的重要仪器；但是，这种仪器是手动测量仪器，用于指导现场存在诸多问题：首先，泥浆的手动取样和手动测量增加了现场工作人员的劳动量，而且增加了实验人员在有害环境下的暴露时间，不利于现场人员的身体健康；其次是手动测量人为误差大，数据可靠性差；第三是手动测量往往测量时间间隔大，不利于及时发现并处理井下异常情况，因而不利于井场安全；第四是手动测量系统性差，不利于数据的对比分析；第五是常规的流变性测量方法无法测量不同温度下钻井液的流变性变化趋势，不能反映温度对钻井液流变性的影响大小。At present, the paradigm viscometer is mainly used to measure the rheology of drilling fluid in oil drilling field. The basic principle is: the motor drives the outer cylinder to rotate at a constant speed through the transmission device. With the help of the viscosity of the measured liquid, a certain torque acts on the inner cylinder to drive the inner cylinder connected to the torsion spring to rotate by an angle. The effect is calculated by this angle. Shear stress on the inner cylinder. Measure the shear stress at different constant speeds to calculate the rheological parameters of the drilling fluid. This instrument has a wide measurement range and is convenient for measurement. It has been an important instrument for on-site drilling fluid engineers for many years; however, this instrument is a manual measurement instrument used to guide the field. There are many problems: first, manual mud sampling and manual measurement increase It increases the workload of field staff and increases the exposure time of experimenters in harmful environments, which is not conducive to the health of field personnel; secondly, manual measurement has large human errors and poor data reliability; thirdly, manual measurement often measures time intervals It is not conducive to timely detection and handling of downhole abnormal conditions, which is not conducive to the safety of the well site; fourth is the poor system of manual measurement, which is not conducive to the comparative analysis of data; the fifth is that conventional rheology measurement methods cannot measure drilling fluid at different temperatures The changing trend of the rheology of the drilling fluid cannot reflect the influence of temperature on the rheology of the drilling fluid.
发明内容Summary of the invention
本发明的目的是针对现有技术存在的问题，提供了一种测量数据准确、可测量不同温度条件下现场钻井液流变性变化曲线的温控式钻井液流变性自动化在线测量装置。The purpose of the present invention is to provide a temperature-controlled drilling fluid rheology automatic online measurement device with accurate measurement data and capable of measuring on-site drilling fluid rheology change curves under different temperature conditions in view of the problems in the prior art.
发明的技术方案：Invented technical solution:
一种温控式钻井液流变性自动化在线测量装置，包括泵、加热装置、流量计、矩形断面管、压力传感器；其中：两个断面面积不同的矩形断面管通过管线连接，在两个矩形断面管的进、出口端部分别安装压力传感器；在每个矩形断面管的两端均连接有变换接头，四个变换接头内部流道为流线型，且各变换接头断面面积相等；四个压力传感器和流量计通过信号线连接到数据采集器与数据处理系统上。A temperature-controlled automatic on-line measuring device for rheology of drilling fluids, including a pump, a heating device, a flow meter, a rectangular section tube, and a pressure sensor; wherein: two rectangular section tubes with different section areas are connected by a pipeline, and the two rectangular sections Pressure sensors are installed at the inlet and outlet ends of the pipe respectively; conversion joints are connected to both ends of each rectangular section pipe, the internal flow channels of the four conversion joints are streamlined, and the cross-sectional area of each conversion joint is equal; the four pressure sensors and The flowmeter is connected to the data collector and the data processing system through a signal line.
上述方案进一步包括：The above scheme further includes:
两个矩形断面管的断面高度相同，宽度分别为整数倍差。The section height of the two rectangular section tubes is the same, and the width is an integer multiple of the difference.
两个矩形断面管的断面高度均为2.75mm，宽度分别为7cm、14cm；每个矩形断面管上的压力传感器与各自对应的矩形断面管进出口端的距离不小于10cm，每对压力传感器相距50cm。The section heights of the two rectangular section tubes are both 2.75mm and the widths are 7cm and 14cm respectively; the distance between the pressure sensor on each rectangular section tube and the inlet and outlet ends of the corresponding rectangular section tube is not less than 10cm, and the distance between each pair of pressure sensors is 50cm .
所述泵为恒流泵，所述流量计为科里奥利质量流量计。The pump is a constant flow pump, and the flow meter is a Coriolis mass flow meter.
所述加热装置为电加热容器或水浴加热容器或自控温管路电热带。The heating device is an electric heating container or a water bath heating container or a self-controlling pipeline electric heating tape.
所述的压力传感器为平面膜压力传感器。The pressure sensor is a flat membrane pressure sensor.
发明的效果：本发明所涉及的装置，采用改变矩形断面管宽度的方法改变速度梯度，可同时测量2个速度梯度下的应力值，所以不需要变化泵的流量来调节速度梯度，有利于流变性的连续测量；另外，该发明装置用恒流泵取样代替手动取样，减少了测试人员劳动强度，改善了现场测试人员的工作环境；同时采用加热装置将钻井液进行加热，可实现连续测量不同温度下的钻井液流变 性，所需温度可由加热装置进行调控。Effect of the invention: The device involved in the present invention adopts the method of changing the width of the rectangular section tube to change the velocity gradient, and can measure the stress value under two velocity gradients at the same time, so there is no need to change the flow rate of the pump to adjust the velocity gradient, which is beneficial to the flow Continuous measurement of denaturation; in addition, the device of the invention uses constant flow pump sampling instead of manual sampling, which reduces the labor intensity of testers and improves the working environment of field testers; at the same time, a heating device is used to heat the drilling fluid, which can achieve continuous measurement. The rheology of drilling fluid at temperature, the required temperature can be adjusted by the heating device.
该发明的装置解决了常规钻井液流变性测量中存在的问题，提高了测量精度，实现了自动化实时测量不同温度下的钻井液流变性。The device of the invention solves the problems existing in conventional drilling fluid rheology measurement, improves measurement accuracy, and realizes automatic real-time measurement of drilling fluid rheology at different temperatures.
图1是一种温控式钻井液流变性自动化在线测量装置示意图；Figure 1 is a schematic diagram of an automatic online measuring device for temperature-controlled drilling fluid rheology;
图1中，1、恒流泵，2、加热装置，3、科里奥利质量流量计，4、5、7、9均为变换接头，5、8为矩形断面管，10、11、12、13均为压力传感器，14、数据采集与处理器，15、计算机。In Figure 1, 1, constant flow pump, 2, heating device, 3, Coriolis mass flow meter, 4, 5, 7, 9 are conversion joints, 5, 8 are rectangular section tubes, 10, 11, 12 , 13 are pressure sensors, 14, data acquisition and processor, 15, computer.
下面结合附图对本发明进行详细的描述。The present invention will be described in detail below in conjunction with the drawings.
把恒流泵1的入口管与钻井液容器相连，恒流泵1与加热装置2、流量计3、变换接头、矩形断面管5和8通过管线依次连接后，由矩形断面管8的出口端变换接头9接入钻井液容器，形成循环。数字采集与处理器14把流量计3、压力传感器的信号采集到计算机15中。Connect the inlet pipe of the constant flow pump 1 to the drilling fluid container, the constant flow pump 1 and the heating device 2, the flow meter 3, the conversion joint, and the rectangular section pipes 5 and 8 are connected in sequence through the pipeline, and the outlet end of the rectangular section pipe 8 The conversion joint 9 is connected to the drilling fluid container to form a circulation. The digital acquisition and processor 14 collects the signals of the flow meter 3 and the pressure sensor into the computer 15.
矩形断面管5和矩形断面管8高度均为2.75mm，长度均为70cm的两个矩形断面管，但两个矩形断面管的宽度不同，分别为7cm和14cm；The rectangular section tube 5 and the rectangular section tube 8 are two rectangular section tubes with a height of 2.75mm and a length of 70cm, but the widths of the two rectangular section tubes are different, being 7cm and 14cm respectively;
压力传感器均为平面膜压力传感器，每对压力传感器相距50cm，分别测量矩形断面管的压力损耗；The pressure sensors are all flat membrane pressure sensors, and each pair of pressure sensors is 50cm apart, and the pressure loss of the rectangular section tube is measured separately;
4个变换接头均为连接矩形断面管与管线的接头，这种接头的内部流道为流线型，且接头各断面面积相等，用于实现流体的等流速变形。The four conversion joints are all joints connecting rectangular cross-section pipes and pipelines. The internal flow channel of this joint is streamlined, and the cross-sectional area of each joint is equal, which is used to realize the constant flow rate deformation of the fluid.
使用时，连续循环容器中的钻井液，调节加热装置至所需温度，给流经钻井液加热，并实时记录流量和4个压力传感器的压力；根据流量瞬时值、和两个矩形断面管的几何参数计算两矩形断面管内钻井液的流动速度梯度瞬时值， 同时根据两个矩形断面管上两对压力传感器所测定的压力损耗和几何参数计算两矩形断面管内的切应力瞬时值，根据两个矩形断面管的速梯和切应力值，计算钻井液的塑性黏度、动切应力、表观黏度、流型指数、稠度系数等流变参数的瞬时值，连续测定这些流变参数的瞬时值，即可实时测量并记录相应温度下的钻井液流变参数，实现不同温度下钻井液流变参数的自动化在线测量。When in use, continuously circulate the drilling fluid in the container, adjust the heating device to the required temperature, heat the flowing drilling fluid, and record the flow rate and the pressure of the 4 pressure sensors in real time; according to the instantaneous value of the flow rate, and the two rectangular section pipes The geometric parameters calculate the instantaneous value of the flow velocity gradient of the drilling fluid in the two rectangular section pipes. At the same time, the instantaneous value of the shear stress in the two rectangular section pipes is calculated according to the pressure loss and geometric parameters measured by the two pairs of pressure sensors on the two rectangular section pipes. Calculate the instantaneous values of rheological parameters such as plastic viscosity, dynamic shear stress, apparent viscosity, flow pattern index, and consistency coefficient of the drilling fluid, and continuously measure the instantaneous values of these rheological parameters. It can measure and record the rheological parameters of the drilling fluid at the corresponding temperature in real time, and realize the automatic online measurement of the rheological parameters of the drilling fluid at different temperatures.
本发明与现有技术相比具有如下技术优势：第一、可连续测量不同温度下的钻井液流变性；其次，采用恒流泵作为连续取样工具代替手动取样；第三，本发明采用两个厚度相同、长度相同，但宽度不同的两个串联的矩形断面管，以便在恒流泵流量不变的情况下，在两个矩形断面管内产生两个不同的速度梯度瞬时量；第四，用科里奥利质量流量计测量通过串联矩形断面管的流量瞬时值，并分别根据两个矩形断面管的几何尺寸和流量计算两个矩形断面管内的速度梯度瞬时量；第五，分别在每个矩形断面管的两端10cm以上处，各安装一个平面膜压力传感器，用来测量两矩形断面管内的压力损耗瞬时量，并根据两段矩形断面管内的压力损耗瞬时量，计算两管管壁的切应力瞬时量；第六，根据两个不同速度梯度下的切应力瞬时值，计算钻井液流变参数的瞬时量；第七，连续自动测量记录不同温度下钻井液流变参数的瞬时量，实现钻井液流变性的自动化在线测量。Compared with the prior art, the present invention has the following technical advantages: firstly, it can continuously measure the rheology of drilling fluid at different temperatures; secondly, it uses a constant flow pump as a continuous sampling tool instead of manual sampling; thirdly, the present invention uses two Two rectangular cross-section tubes connected in series with the same thickness and same length but different widths can produce two different instantaneous velocity gradients in the two rectangular cross-section tubes under the condition of constant flow of the constant flow pump; fourth, use The Coriolis mass flowmeter measures the instantaneous value of the flow through the rectangular cross-section tubes in series, and calculates the instantaneous amount of the velocity gradient in the two rectangular cross-section tubes according to the geometric dimensions and flow rates of the two rectangular cross-section tubes; A flat membrane pressure sensor is installed at the two ends of the rectangular section pipe above 10cm to measure the instantaneous pressure loss in the two rectangular section pipes, and calculate the pressure loss of the two pipe walls according to the instantaneous pressure loss in the two rectangular section pipes. The instantaneous amount of shear stress; sixth, calculate the instantaneous amount of rheological parameters of drilling fluid according to the instantaneous values of shear stress under two different velocity gradients; seventh, continuously and automatically measure and record the instantaneous amount of rheological parameters of drilling fluid at different temperatures, Realize automatic online measurement of drilling fluid rheology.
Claims (6)
- 一种温控式钻井液流变性自动化在线测量装置，包括泵、加热装置、流量计、矩形断面管、压力传感器；其特征是：两个断面面积不同的矩形断面管通过管线连接，在两个矩形断面管的进、出口端部分别安装压力传感器；在每个矩形断面管的两端均连接有变换接头，四个变换接头内部流道为流线型，且各变换接头断面面积相等；四个压力传感器和流量计通过信号线连接到数据采集器与数据处理系统上。A temperature-controlled automatic on-line measuring device for rheology of drilling fluids, which includes a pump, a heating device, a flow meter, a rectangular section tube, and a pressure sensor; it is characterized in that two rectangular section tubes with different section areas are connected by a pipeline. Pressure sensors are installed at the inlet and outlet ends of the rectangular cross-section pipe respectively; the two ends of each rectangular cross-section pipe are connected with conversion joints, the internal flow channels of the four conversion joints are streamlined, and the cross-sectional area of each conversion joint is equal; four pressures The sensor and flow meter are connected to the data collector and the data processing system through signal lines.
- 根据权利要求1所述的温控式钻井液流变性自动化在线测量装置，其特征在于：两个矩形断面管的断面高度相同，宽度分别为整数倍差。The temperature-controlled automatic online measuring device for rheology of drilling fluids according to claim 1, characterized in that the section heights of the two rectangular section pipes are the same, and the widths are respectively an integer multiple of the difference.
- 根据权利要求2所述的温控式钻井液流变性自动化在线测量装置，其特征在于：两个矩形断面管的断面高度均为2.75mm，宽度分别为7cm、14cm；每个矩形断面管上的压力传感器与各自对应的矩形断面管进出口端的距离不小于10cm，每对压力传感器相距50cm。The temperature-controlled drilling fluid rheology automatic online measuring device according to claim 2, characterized in that: the section heights of the two rectangular section pipes are both 2.75mm, and the widths are 7cm and 14cm respectively; The distance between the pressure sensor and the inlet and outlet ends of the corresponding rectangular cross-section pipe is not less than 10cm, and the distance between each pair of pressure sensors is 50cm.
- 根据权利要求1或2、3所述的温控式钻井液流变性自动化在线测量装置，其特征在于：所述泵为恒流泵，所述流量计为科里奥利质量流量计。The temperature-controlled automatic online measurement device for rheology of drilling fluid according to claim 1 or 2, 3, characterized in that: the pump is a constant flow pump, and the flowmeter is a Coriolis mass flowmeter.
- 根据权利要求1或2、3所述的温控式钻井液流变性自动化在线测量装置，其特征在于：所述加热装置为电加热容器或水浴加热容器或自控温管路电热带。The temperature-controlled drilling fluid rheology automatic online measuring device according to claim 1 or 2, 3, characterized in that the heating device is an electric heating vessel or a water bath heating vessel or a self-controlling temperature pipeline electric heating tape.
- 根据权利要求1或2、3所述的温控式钻井液流变性自动化在线测量装置，其特征在于：所述的压力传感器为平面膜压力传感器。The temperature-controlled automatic online measuring device for rheology of drilling fluid according to claim 1 or 2, 3, wherein the pressure sensor is a flat membrane pressure sensor.
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