技术领域technical field
本发明涉及一种实验室用可精细控制泥饼厚度的机械装置，属于石油钻井工程技术领域。The invention relates to a laboratory-used mechanical device capable of finely controlling the thickness of mud cake, belonging to the technical field of petroleum drilling engineering.
背景技术Background technique
固井二界面指水泥环与地层(或外层套管)之间的胶结面。油田所遇到的层间窜、管外冒油气水、环空“声变”、固井一界面的“声幅”等问题都与固井二界面封固系统失效有直接的关系。固井作业完成后，泥饼夹在水泥浆与地层之间，泥饼的质量直接关系到固井二界面的胶结质量。所以，固井二界面的研究是钻井工程的一大重点。The second interface of cementing refers to the cemented surface between the cement sheath and the formation (or outer casing). Problems encountered in oil fields such as interlayer channeling, oil, gas and water leakage outside the pipe, "sound change" in the annular space, and "sound amplitude" at the cementing interface are all directly related to the failure of the sealing system at the cementing interface. After the cementing operation is completed, the mud cake is sandwiched between the cement slurry and the formation, and the quality of the mud cake is directly related to the cementing quality of the cementing interface. Therefore, the research on the cementing interface is a major focus of drilling engineering.
为了深入研究固井二界面，顾军教授研制出仿地井筒制备方法(专利号：ZL200810047342.3)，到目前为止，实验室已经进行了包括钻井液、养护时间、泥饼改性剂、泥饼厚度等对固井二界面胶结强度影响的实验研究，所有的实验都离不开制备仿地井筒和去除虚泥饼的过程。现阶段，实验室去除虚泥饼采用的是玻璃棒刮泥饼的方式，该方式实验效率较低，难免存在因人为操作而产生的厚度不均匀、泥饼面不光滑的问题。In order to study the cementing interface in depth, Professor Gu Jun developed a ground-like wellbore preparation method (patent number: ZL200810047342.3). Experimental research on the influence of cake thickness on the bond strength of cementing interface, all experiments are inseparable from the process of preparing imitation wellbore and removing virtual mud cake. At present, the method of removing virtual mud cakes in the laboratory is the method of scraping mud cakes with glass rods. The experimental efficiency of this method is low, and there are inevitably problems of uneven thickness and rough surface of mud cakes due to human operation.
目前为止，许多学者致力于泥饼的研究，相关专利分为两种，一种是不同条件下泥饼的制取，另一种是泥饼厚度的测量。这两种类型专利所涉及到的方法均无法直接获得具有一定厚度的泥饼，难免存在实验效率较低、实验结果误差较大的问题。So far, many scholars have devoted themselves to the research of mud cake, and related patents are divided into two types, one is the preparation of mud cake under different conditions, and the other is the measurement of mud cake thickness. The methods involved in these two types of patents cannot directly obtain a mud cake with a certain thickness, which inevitably has the problems of low experimental efficiency and large error in experimental results.
发明内容Contents of the invention
本发明的目的在于克服现有技术的不足，并提供一种基于顾军教授“仿地井筒制备方法”专利的室内实验用泥饼厚度精细控制装置。The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a fine control device for mud cake thickness for indoor experiments based on the patent of Professor Gu Jun's "preparation method of ground-like wellbore".
实现本发明目的所采用的技术方案为，一种室内实验用泥饼厚度精细控制装置，至少包括支架和安装于支架上的刮刀组件，支架上安装有螺旋微调器和仿地井筒基座，刮刀组件、螺旋微调器和仿地井筒基座从上至下顺序安装于支架上，螺旋微调器的位置与刮刀组件中刀片的高度相对应；所述刮刀组件包括电动机、转杆、刀片和刀片紧固件，电动机的转轴与转杆固连，转杆的轴线与仿地井筒基座的轴线重合，转杆中沿轴向开设有贯穿转杆的刀片槽，刀片通过刀片紧固件固定于刀片槽中；所述螺旋微调器包括粗调旋钮、精调旋钮、行星轮系、连接杆、刻度尺和齿轮齿条机构，齿轮齿条机构的齿轮封装于支架内部、齿条固定于支架上沿水平方向开设的安装孔中并且与刀片的刀背相对，刻度尺与齿条固连并且刻度尺与刀片的刀背相接触，所述行星轮系由外齿圈、太阳轮、行星轮和行星架构成，粗调旋钮与外齿圈固连，精调旋钮连接太阳轮，连接杆的一端突出于支架并且固定于外齿圈上、另一端位于支架内部并且与齿轮连接，太阳轮和行星轮均通过行星架与齿轮连接，行星架与齿轮间隙配合，粗调旋钮和精调旋钮的外表面上均设有刻度。The technical solution adopted to achieve the purpose of the present invention is a fine control device for mud cake thickness for indoor experiments, which at least includes a bracket and a scraper assembly mounted on the bracket. The component, the screw trimmer and the ground-like wellbore base are installed on the bracket in sequence from top to bottom, and the position of the screw trimmer corresponds to the height of the blade in the scraper assembly; the scraper assembly includes a motor, a rotating rod, a blade and a blade tight Firmware, the rotating shaft of the motor is fixedly connected with the rotating rod, the axis of the rotating rod coincides with the axis of the ground imitation wellbore base, a blade groove is opened in the rotating rod along the axial direction, and the blade is fixed to the blade through the blade fastener In the groove; the spiral fine tuner includes a coarse adjustment knob, a fine adjustment knob, a planetary gear train, a connecting rod, a scale and a rack and pinion mechanism, the gear of the rack and pinion mechanism is packaged inside the bracket, and the rack is fixed on the upper edge of the bracket In the installation hole opened in the horizontal direction and opposite to the knife back of the blade, the scale is fixedly connected with the rack and the scale is in contact with the knife back of the blade. The planetary gear train is composed of an outer ring gear, a sun gear, a planetary gear and a planetary frame , the coarse adjustment knob is fixedly connected with the outer ring gear, the fine adjustment knob is connected with the sun gear, one end of the connecting rod protrudes from the bracket and is fixed on the outer ring gear, the other end is located inside the bracket and connected with the gear, the sun gear and the planetary gear pass through The planetary carrier is connected with the gear, and the planetary carrier and the gear gap match, and scales are arranged on the outer surfaces of the coarse adjustment knob and the fine adjustment knob.
所述电动机通过电机固定组件与支架连接，所述电机固定组件包括电机固定筒、横杆和螺纹紧固件，电动机安装于电机固定筒中，横杆的一端与电机固定筒的侧面固连、另一端通过螺纹紧固件固定于支架上。The motor is connected to the bracket through a motor fixing assembly, the motor fixing assembly includes a motor fixing cylinder, a cross bar and threaded fasteners, the motor is installed in the motor fixing cylinder, one end of the cross bar is fixedly connected to the side of the motor fixing cylinder, and the other One end is fixed on the bracket by a threaded fastener.
所述支架上沿轴向开设有滑槽，横杆靠近支架的端部上设有与滑槽相匹配的滑块，滑块与滑槽构成滑动副。A chute is provided on the support in the axial direction, and a slide block matching the chute is provided on the end of the cross bar close to the support, and the slide block and the chute form a sliding pair.
支架上设有底座，底座位于仿地井筒基座的正下方。The bracket is provided with a base, and the base is located directly below the ground-like shaft base.
所述行星架呈人字形，包括太阳轮支架和L型行星轮支架，太阳轮支架的两端分别位于太阳轮和齿轮中心开设的安装孔中并且与安装孔间隙配合，L型行星轮支架的一端套于太阳轮支架上并且与太阳轮支架间隙配合、另一端与行星轮的中心固连。The planet carrier is herringbone-shaped and includes a sun gear bracket and an L-shaped planet gear bracket. One end is sleeved on the sun gear bracket and is loosely matched with the sun gear bracket, and the other end is fixedly connected with the center of the planetary gear.
所述仿地井筒基座与支架固连，仿地井筒基座的内孔孔径等于仿地井筒的外径。The base of the ground-like wellbore is fixedly connected with the support, and the diameter of the inner hole of the base of the ground-like wellbore is equal to the outer diameter of the ground-like wellbore.
所述连接杆呈弯折状、由3段折臂构成，两段水平折臂分别固定于竖直折臂的两端并且位于竖直折臂的两侧，其中一段水平折臂位于支架外并且固定于外齿圈上、另一段水平折臂安装于支架中并且与齿轮连接。The connecting rod is bent and consists of three sections of folding arms. Two sections of horizontal folding arms are respectively fixed to the two ends of the vertical folding arms and located on both sides of the vertical folding arms. One of the horizontal folding arms is located outside the bracket and It is fixed on the outer ring gear, and the other horizontal folding arm is installed in the bracket and connected with the gear.
由上述技术方案可知，本发明提供的室内实验用泥饼厚度精细控制装置主体包括四部分：支架、刮刀组件、螺旋微调器和仿地井筒基座，其中1、支架，为装置的整体支撑结构，同时限定刮刀组件的移动轨迹；2、刮刀组件，用于刮除虚泥饼，包括电动机、转杆、刀片和刀片紧固件，转杆由电动机驱动、用于固定刀片，转杆带动刀片转动，刀片绕转杆轴线做定轴转动，将位于其转动半径中的虚泥饼刮除，从而得到设定厚度的泥饼；3、螺旋微调器，用于精确调节刀片的转动半径，包括粗调旋钮、精调旋钮、行星轮系、连接杆、刻度尺和齿轮齿条机构，内部集成行星轮系，行星轮系的太阳轮和外齿圈具有一齿比，从而实现刀片转动半径的粗调和精调，行星轮系与齿轮齿条机构通过连接杆传递扭矩，粗调旋钮与外齿圈固连、精调旋钮连接太阳轮，粗调旋钮和精调旋钮均为扭矩输入端，连接杆连接外齿圈与齿轮，外齿圈为扭矩输出端，行星架实现太阳轮、行星轮和齿轮之间的连接，行星架与太阳轮和齿轮均采用间隙配合，形成两组转动副，即行星架仅起到支撑太阳轮和行星轮的作用，而不传递扭矩，外齿圈输出的扭矩作用于齿轮齿条机构的齿轮上，通过齿轮齿条机构将扭矩转化为齿条沿水平方向的移动，齿条与刀片的刀背相对，齿条与刻度尺固连，刻度尺与刀片的刀背相接触，齿条通过刻度尺作用于刀片进而调节刀片的转动半径，通过刻度尺上的长度刻度可直接获取刀片的转动半径；4、仿地井筒基座，与顾军教授“仿地井筒制备方法”专利所制备的仿地井筒配套使用，用于放置仿地井筒，泥饼位于仿地井筒中。It can be seen from the above technical solution that the fine control device for indoor experiment mud cake thickness provided by the present invention mainly includes four parts: a bracket, a scraper assembly, a screw trimmer and a ground-like wellbore base, wherein 1, the bracket, is the overall support structure of the device , while limiting the moving track of the scraper assembly; 2. The scraper assembly is used to scrape off the virtual mud cake, including a motor, a rotating rod, a blade and a blade fastener. The rotating rod is driven by a motor and is used to fix the blade, and the rotating rod drives the blade Rotate, the blade rotates around the axis of the rotating rod at a fixed axis, and scrapes off the virtual mud cake located in its radius of rotation, so as to obtain a mud cake with a set thickness; 3. Spiral trimmer, used to precisely adjust the radius of rotation of the blade, including Coarse adjustment knob, fine adjustment knob, planetary gear system, connecting rod, scale and rack and pinion mechanism, the planetary gear system is integrated inside, the sun gear and the outer ring gear of the planetary gear system have a gear ratio, so as to realize the rotation radius of the blade Coarse adjustment and fine adjustment, the planetary gear system and the rack and pinion mechanism transmit torque through the connecting rod, the coarse adjustment knob is fixedly connected with the outer ring gear, and the fine adjustment knob is connected with the sun gear, both the coarse adjustment knob and the fine adjustment knob are torque input terminals, connected The rod connects the outer ring gear and the gear, the outer ring gear is the torque output end, and the planet carrier realizes the connection between the sun gear, the planet gear and the gear. The planet carrier only plays the role of supporting the sun gear and the planetary gear, but does not transmit torque. The torque output by the outer ring gear acts on the gear of the rack and pinion mechanism, and the torque is converted into the horizontal direction of the rack through the rack and pinion mechanism. Move, the rack is opposite to the back of the blade, the rack is fixedly connected to the scale, the scale is in contact with the back of the blade, the rack acts on the blade through the scale to adjust the radius of rotation of the blade, and the length scale on the scale can be Directly obtain the turning radius of the blade; 4. The ground-like wellbore base is used in conjunction with the ground-like wellbore prepared by Professor Gu Jun's patent "Preparation Method of the Ground-like Wellbore", and is used to place the ground-like wellbore, and the mud cake is located in the ground-like wellbore .
电动机通过电机固定组件与支架连接，电动机放置于电机固定筒中，通过电机固定筒安装电动机，不需要改变电动机的自身结构，支架上沿轴向开设滑槽，横杆靠近支架的端部上设有与滑槽相匹配的滑块，滑块与滑槽构成滑动副，通过滑块与滑槽限制电动机绕支架的转动自由度，防止电动机上下移动时转动，保证刀片转动半径的调节精度；刮除的虚泥饼通过设置于仿地井筒基座的正下方的底座盛接，避免虚泥饼污染实验台。The motor is connected to the bracket through the motor fixing component. The motor is placed in the motor fixing barrel. The motor is installed through the motor fixing barrel without changing the structure of the motor itself. The bracket is provided with a slide slot along the axial direction, and the end of the cross bar near the bracket is equipped with a The slider matched with the chute, the slider and the chute constitute a sliding pair, the freedom of rotation of the motor around the bracket is limited by the slider and the chute, preventing the motor from turning when it moves up and down, and ensuring the adjustment accuracy of the blade rotation radius; scraping The virtual mud cake is connected to the base directly below the ground-like wellbore base to prevent the virtual mud cake from polluting the test bench.
与现有的玻璃棒刮泥饼技术相比，本发明提供的室内实验用泥饼厚度精细控制装置具有如下有益效果：Compared with the existing glass rod mud cake scraping technology, the fine control device for indoor experiment mud cake thickness provided by the present invention has the following beneficial effects:
1、本发明利用螺旋微调器对泥饼厚度进行精细控制，改变了传统玻璃棒刮泥饼不均匀的缺陷，利用电动机的带动，提高实验室去除虚泥饼的速率，极大地提高了实验准确度，可以精细控制泥饼厚度，为研究涉及到泥饼厚度的科研问题提供便利。1. The present invention uses a spiral fine-tuner to finely control the thickness of the mud cake, which changes the defect of uneven scraping of the mud cake by the traditional glass rod, and uses the drive of the motor to improve the speed of removing the virtual mud cake in the laboratory, which greatly improves the accuracy of the experiment. The thickness of the mud cake can be precisely controlled, and it is convenient to study scientific research issues related to the thickness of the mud cake.
2、本发明提供的室内实验用泥饼厚度精细控制装置，各组成部分结构简单，易于操作，精度较高，可靠性强，装置制作工艺简单易行，和顾军教授研制出的仿地井筒制备装置配合使用，具有广阔的推广应用前景。2. The fine control device for indoor experiment mud cake thickness provided by the present invention has simple structure of each component, easy operation, high precision, strong reliability, simple and easy manufacturing process of the device, and the ground-like shaft developed by Professor Gu Jun. The preparation device is used together, and has broad application prospects.
附图说明Description of drawings
图1为本发明提供的室内实验用泥饼厚度精细控制装置的结构示意图。Fig. 1 is a structural schematic diagram of an indoor experiment mud cake fine control device provided by the present invention.
图2为图1的主视图。Fig. 2 is a front view of Fig. 1 .
图3为图1的左视图。Fig. 3 is a left side view of Fig. 1 .
图4为图1拆除电动机后的俯视图。Fig. 4 is a top view of Fig. 1 with the motor removed.
图5为螺旋微调器的外部结构图。Figure 5 is an external structural diagram of the spiral trimmer.
图6为螺旋微调器的内部结构图。Figure 6 is a diagram of the internal structure of the spiral trimmer.
其中，1-支架，2-刮刀组件，3-螺旋微调器，4-仿地井筒基座，5-电机固定组件，6-底座，7-滑槽，8-横杆，9-刻度尺，10-精调旋钮，11-粗调旋钮，12-电动机，13-刀片，14-转杆，15-刀片紧固件，16-螺纹紧固件，17-电机固定筒，18-刀片槽，19-刻度，20-外齿圈，21-太阳轮，22-行星轮，23-连接杆，24-齿轮，25-齿条，26-行星架，261-太阳轮支架，262-L型行星轮支架。Among them, 1-bracket, 2-scraper assembly, 3-screw trimmer, 4-imitation ground shaft base, 5-motor fixing assembly, 6-base, 7-chute, 8-cross bar, 9-scale, 10-fine adjustment knob, 11-coarse adjustment knob, 12-motor, 13-blade, 14-rotary rod, 15-blade fastener, 16-thread fastener, 17-motor fixing cylinder, 18-blade groove, 19-scale, 20-outer ring gear, 21-sun gear, 22-planetary gear, 23-connecting rod, 24-gear, 25-rack, 26-planet carrier, 261-sun gear bracket, 262-L type planet Wheel bracket.
具体实施方式Detailed ways
下面结合附图和实施例对本发明进行详细具体说明，本发明的内容不局限于以下实施例。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, and the content of the present invention is not limited to the following embodiments.
本发明提供的室内实验用泥饼厚度精细控制装置，其结构如图1所示，包括支架1、刮刀组件2、螺旋微调器3、仿地井筒基座4、电机固定组件5和底座6，刮刀组件2、螺旋微调器3、仿地井筒基座4和底座6从上至下顺序安装于支架1上，底座6尺寸为200*120*10mm，支架1直径为10mm、长度设计值为600mm，底座6位于仿地井筒基座4的正下方，所述仿地井筒基座4与支架1固连，仿地井筒基座4高度为50mm、内径为100mm(仿地井筒的外径为100mm)、壁厚为10mm、距离底座上表面为150mm，电机固定组件5用于支撑刮刀组件2中的电动机12，螺旋微调器3的位置与刮刀组件中刀片13的高度相对应；The fine control device for mud cake thickness for indoor experiments provided by the present invention has a structure as shown in Figure 1, including a bracket 1, a scraper assembly 2, a screw trimmer 3, a ground-like wellbore base 4, a motor fixing assembly 5 and a base 6, The scraper assembly 2, the screw trimmer 3, the ground imitation wellbore base 4 and the base 6 are installed on the support 1 in order from top to bottom, the base 6 has a size of 200*120*10mm, the diameter of the support 1 is 10mm, and the design length is 600mm , the base 6 is located directly below the ground-like wellbore base 4, the ground-like wellbore base 4 is fixedly connected with the support 1, the height of the ground-like wellbore base 4 is 50mm, and the inner diameter is 100mm (the outer diameter of the ground-like wellbore is 100mm ), the wall thickness is 10mm, and the distance from the upper surface of the base is 150mm, the motor fixing assembly 5 is used to support the motor 12 in the scraper assembly 2, and the position of the screw trimmer 3 corresponds to the height of the blade 13 in the scraper assembly;
参见图2至图4，所述刮刀组件2包括电动机12、转杆14、刀片13和刀片紧固件15，电动机12的转轴与转杆14固连，转杆14的轴线与仿地井筒基座4的轴线重合，转杆中沿轴向开设有贯穿转杆的刀片槽18，刀片通过刀片紧固件固定于刀片槽18中，刀片长120mm、宽、25mm，刀刃倾斜角的设定值为45°，刀片底部距离转杆底部为20mm，以保证下一步微调工作的顺利进行；2 to 4, the scraper assembly 2 includes a motor 12, a rotating rod 14, a blade 13 and a blade fastener 15, the rotating shaft of the motor 12 is fixedly connected to the rotating rod 14, the axis of the rotating rod 14 is connected to the base The axes of the seat 4 are coincident, and a blade groove 18 penetrating through the rod is provided in the rotating rod in the axial direction, and the blade is fixed in the blade groove 18 by a blade fastener. 45°, the distance between the bottom of the blade and the bottom of the rotating rod is 20mm, so as to ensure the smooth progress of the fine-tuning work in the next step;
参见图2，所述电机固定组件2包括电机固定筒17、横杆8和螺纹紧固件16，电动机12安装于电机固定筒17中，横杆8的一端与电机固定筒17的侧面固连、另一端通过螺纹紧固件16固定于支架1上，支架1上沿轴向开设有滑槽7，横杆靠近支架的端部上设有与滑槽相匹配的滑块，滑块与滑槽7构成滑动副，滑槽的长度为300mm、宽为6mm，滑槽底端距离仿地井筒基座4的顶面垂直距离为100mm、距离底座6底面(实验台)310mm；Referring to Fig. 2, the motor fixing assembly 2 includes a motor fixing cylinder 17, a cross bar 8 and a threaded fastener 16, the motor 12 is installed in the motor fixing cylinder 17, and one end of the cross bar 8 is fixedly connected to the side of the motor fixing cylinder 17 , the other end is fixed on the bracket 1 by threaded fasteners 16, the bracket 1 is provided with a chute 7 along the axial direction, and the end of the cross bar close to the bracket is provided with a slider matching the chute, the slider and the slider Groove 7 constitutes sliding pair, and the length of chute is 300mm, and width is 6mm, and the vertical distance of chute bottom is 100mm from the top surface of imitation ground shaft base 4, and is 310mm from base 6 bottom surface (experiment bench);
参见图5和图6，所述螺旋微调器包括粗调旋钮11、精调旋钮10、行星轮系、连接杆23、刻度尺9和齿轮齿条机构，齿轮齿条机构的齿轮24封装于支架1内部、齿条25固定于支架上沿水平方向开设的安装孔中并且与刀片13的刀背相对，刻度尺9与齿条固连并且刻度尺9与刀片的刀背相接触，所述行星轮系由外齿圈20、太阳轮21、行星轮22和行星架26构成，粗调旋钮11与外齿圈20固连，精调旋钮10连接太阳轮21，粗调旋钮和精调旋钮的外表面上均设有刻度19，所述连接杆23呈弯折状、由3段折臂构成，两段水平折臂分别固定于竖直折臂的两端并且位于竖直折臂的两侧，其中一段水平折臂位于支架1外并且固定于外齿圈20上、另一段水平折臂安装于支架1中并且与齿轮24连接，太阳轮和行星轮均通过行星架与齿轮连接，所述行星架26呈人字形，包括太阳轮支架261和L型行星轮支架262，太阳轮支架的两端分别位于太阳轮和齿轮中心开设的安装孔中并且与安装孔间隙配合，L型行星轮支架的一端套于太阳轮支架上并且与太阳轮支架间隙配合、另一端与行星轮的中心固连。Referring to Fig. 5 and Fig. 6, described spiral trimmer comprises coarse adjustment knob 11, fine adjustment knob 10, planetary gear train, connecting rod 23, scale 9 and rack-and-pinion mechanism, and the gear 24 of rack-and-pinion mechanism is encapsulated in bracket 1. Inside, the rack 25 is fixed in the installation hole provided on the bracket along the horizontal direction and is opposite to the back of the blade 13. The scale 9 is fixedly connected with the rack and the scale 9 is in contact with the back of the blade. The planetary gear train It is composed of an outer ring gear 20, a sun gear 21, a planetary gear 22 and a planet carrier 26. The coarse adjustment knob 11 is fixedly connected to the outer ring gear 20, and the fine adjustment knob 10 is connected to the sun gear 21. The outer surfaces of the coarse adjustment knob and the fine adjustment knob There are scales 19 on each of them. The connecting rod 23 is bent and consists of three sections of folding arms. A section of horizontal folding arm is located outside the bracket 1 and fixed on the outer ring gear 20, and another section of horizontal folding arm is installed in the bracket 1 and connected with the gear 24. Both the sun gear and the planetary gear are connected to the gear through the planet carrier, and the planet carrier 26 is herringbone, including the sun gear bracket 261 and the L-shaped planet gear bracket 262, the two ends of the sun gear bracket are respectively located in the mounting holes provided in the center of the sun gear and the gear and are matched with the mounting holes, one end of the L-shaped planet gear bracket It is set on the sun gear bracket and fits with the sun gear bracket in clearance, and the other end is fixedly connected with the center of the planetary gear.
该室内实验用泥饼厚度精细控制装置与顾军教授的发明专利“一种仿地井筒及其制备方法”(专利号ZL200810047342.3)提供的仿地井筒配合使用，具体操作步骤如下：The fine control device for mud cake thickness used in indoor experiments is used in conjunction with the ground-like wellbore provided by Professor Gu Jun's invention patent "A ground-like wellbore and its preparation method" (Patent No. ZL200810047342.3). The specific operation steps are as follows:
(1)首先制备具有特定渗透率及孔隙度的仿地井筒，密封仿地井筒的一端，将钻井液置于仿地井筒中一段时间，模拟钻井液向仿地井壁的静态滤失而获得具有未知厚度的泥饼，并将仿地井筒放入仿地井筒基座4中；(1) First, prepare a ground-like wellbore with specific permeability and porosity, seal one end of the ground-like wellbore, place the drilling fluid in the ground-like wellbore for a period of time, and simulate the static filtration of the drilling fluid to the ground-like wellbore wall to obtain a A mud cake of unknown thickness, and the ground-like wellbore is placed in the ground-like wellbore base 4;
(2)然后将清洗干净的刀片13装入刀片槽18内，松开电动机12的螺纹紧固件16，将电机固定组件5和刮刀组件2共同向下移动一段距离并固定，目的是使刀片13的旋转半径可以得到调节；(2) Then put the cleaned blade 13 into the blade groove 18, loosen the threaded fastener 16 of the motor 12, move the motor fixing assembly 5 and the scraper assembly 2 together for a certain distance and fix them, the purpose is to make the blade 13 The radius of rotation can be adjusted;
(3)从螺旋微调器3的起始位置调节旋钮，先用粗调旋钮11调节，快接近指定泥饼厚度时，改用精调旋钮10调节至指定刻度，通过刻度尺9达到调节刀片旋转半径的目的；(3) Adjust the knob from the initial position of the screw trimmer 3, first use the coarse adjustment knob 11 to adjust, when it is close to the specified mud cake thickness, use the fine adjustment knob 10 to adjust to the specified scale, and adjust the blade rotation through the scale 9 the purpose of the radius;
(4)待调整好刀片13且固定后，将螺旋微调器恢复至原位，将电机固定组件5和刮刀组件2共同下到滑槽7末端并固定，在底座6上放置烧杯，打开电动机12，通过电动机12的低速旋转，带动刀片13的旋转，制得指定厚度的泥饼，去除的虚泥饼落入烧杯中，防止钻井液污染试验台；(4) After the blade 13 is adjusted and fixed, return the screw trimmer to its original position, lower the motor fixing assembly 5 and the scraper assembly 2 to the end of the chute 7 and fix them, place a beaker on the base 6, and turn on the motor 12 , through the low-speed rotation of the motor 12, the rotation of the blade 13 is driven to produce a mud cake of a specified thickness, and the removed virtual mud cake falls into the beaker to prevent the drilling fluid from polluting the test bench;
(5)在电动机12旋转15秒后，关闭电动机12，为防止拆卸过程中刀片触碰到泥饼内壁，先松开刀片13的刀片紧固件15，将刀片13向转杆中心移动一段距离，在保证刀片13不会碰到泥饼后，松开电动机12的螺纹紧固件16，将电机固定组件5和刮刀组件2共同向上滑动，待转杆2底部完全离开仿地井筒后，固定电机固定组件5和刮刀组件2，将刀片13卸下来清洗干净，待下次使用；(5) After the motor 12 rotates for 15 seconds, turn off the motor 12. In order to prevent the blade from touching the inner wall of the mud cake during disassembly, first loosen the blade fastener 15 of the blade 13 and move the blade 13 to the center of the rotating rod for a certain distance After ensuring that the blade 13 will not touch the mud cake, loosen the threaded fastener 16 of the motor 12, slide the motor fixing assembly 5 and the scraper assembly 2 upward together, and fix it after the bottom of the rotating rod 2 completely leaves the ground-like wellbore. Motor fixing assembly 5 and scraper assembly 2, remove the blade 13 and clean it for next use;
(6)取出仿地井筒，一个样品完成。(6) Take out the imitation ground wellbore, and one sample is completed.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396500.0ACN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396500.0ACN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
| Publication Number | Publication Date |
|---|---|
| CN105867438A CN105867438A (en) | 2016-08-17 |
| CN105867438Btrue CN105867438B (en) | 2018-09-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610396500.0AExpired - Fee RelatedCN105867438B (en) | 2016-06-06 | 2016-06-06 | A kind of laboratory experiment cake thickness precise controlling device |
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| CN (1) | CN105867438B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9417754B2 (en) | 2011-08-05 | 2016-08-16 | P4tents1, LLC | User interface system, method, and computer program product |
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| CN1072497A (en)* | 1991-11-19 | 1993-05-26 | 西安石油学院 | Mud cake thickness measuring apparatus |
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| CN101250999A (en)* | 2008-04-16 | 2008-08-27 | 中国地质大学（武汉） | A ground-like wellbore and its preparation method |
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3281599A (en)* | 1959-08-25 | 1966-10-25 | Chevron Res | Mud-cake-thickness measuring device for gamma-gamma density logger |
| CN1072497A (en)* | 1991-11-19 | 1993-05-26 | 西安石油学院 | Mud cake thickness measuring apparatus |
| CN2441113Y (en)* | 2000-09-14 | 2001-08-01 | 西南石油学院 | Device for measuring thickness of filtering cake for drilling fluid |
| CN101250999A (en)* | 2008-04-16 | 2008-08-27 | 中国地质大学（武汉） | A ground-like wellbore and its preparation method |
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| Haiyang Hao，等.Comparative study on cementation of cement-mudcake interface with and without mud-cake-solidification-agents application in oil & gas wells.《Journal of Petroleum Science and Engineering》.2016,第147卷第143-153页.* |
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