Mdt MDT is a three-dimensional mechanical design software of autodesk and an extension of autocad. But now autodesk's new inventor series software is more powerful and easier to operate. Previous MDT users have switched to inventor one after another. Software with the same function, such as SolidEdge, SolidWorks, UG, Pro. Engineers often need to use several softwares to exchange data effectively with each other to complete a project. For example, the MRP II/ERP system of an enterprise should generally include Photoshop, Scansmithpreditor and other software; Scan the old image into a raster image, and then edit it; You can edit raster vectors and vectorize them, such as AutoCAD overlay and GTX. Now the universal 2D mechanical drawing platform AutoCAD；; MDT is a general 3D parametric mechanical design platform that integrates 2D and 3D. CAE software, such as wmmotion finite element analysis of mechanism simulation; WM concept; CAM software, such as HyperCAM, is in the machining center; Metal sheet SMP, SPI；; It should also include CAPP, PDM and other related software. The system needs to effectively transmit CAD graphic data to other CAE software for analysis and calculation or CAM software for processing and manufacturing. A project often needs to use the advantages of several softwares to create synthetic documents directly, such as: using the powerful Word processing and spreadsheet functions of Word, citing AutoCAD drawings as the flow; Using the powerful vector drawing function of AutoCAD, the raster image obtained by digital camera or scanner is marked or measured. Below, I will talk about my personal experience in integrating AutoCAD, MDT and other software. Because the corresponding version of MDT contains all the functions of the corresponding version of AutoCAD, except only MDT, both of them are applicable. Data information exchange between 1.AutoCAD and other software. Exchange data by standard graphic format AutoCAD uses DXF or international IGES file format to transmit graphic data to other software for analysis, calculation or manufacturing, and creates graphics in AutoCAD according to data generated by other non-graphic software, which can also realize data conversion between AutoCAD and other CAD systems. Every AutoCAD developer should spend some time learning DXF file format in order to compile the required interface program. When using DXF format conversion, it is realized by "file \ output ..." and "file \ open" or using commands "DXFOUT" and "DXF in"; When using IGES format conversion, it is carried out through IGES converter of AutoCAD software. 2. Data conversion through standard image formats AutoCAD realizes the input and output of raster images through standard image formats such as PCX, GIF, BMP, TIFF, TGA, PostScript and JPG, which is more widely used in desktop typesetting, high-quality printing, image processing, realistic display and animation applications. For raster file output, select "New ..." and then "AutoCAD raster file output driver" and "File \ Output ..." or "Tools \ System Settings ..." dialog box of raster file format (including BMP, TGA, PCX and TIFF) in the "Printer" tab to establish and save raster file output settings. When printing, select. You can display raster images in the current window or screen. In the "Observe \ Render \ Render ..." dialog box, select "File", then select the following "Other Options", "File Format (including BMP, TGA, PCX, TIFF, PostScript)" and related options, and finally select "OK" to output; Use the corresponding submenu under Insert to operate the input. 3. By connecting the database AutoCAD, you can access and manipulate the non-graphic data stored in the external database, such as bill of materials and parts list. The new functions of database connection manager and data browser in AutoCAD 2000 make it more convenient to connect, query, modify and update data and graphics, and provide a C++ API interface for application development to construct advanced database application software and functions. In AutoCAD 2000, select Tools \ Database Connection and perform related operations in the corresponding submenu or database connection manager under the new database connection. The uniqueness of MDT lies in that global, local and inhibitory variables can coexist in an external database, and the default is Excel database. Generally, the assembly size should be made into a global variable, and one line of data corresponds to one product. You can query, modify and update data at any time, add and delete variables, and drive the shapes and drawings of corresponding products in the browser. Because MDT can construct suppression variables, the function of automatically suppressing zero-length parameters to drive dimensions is added in 4.0, which makes parametric modeling of products with subtle structural differences more convenient. 4. Input and output through other file formats, such as 3DS and WMF. Select "File \ Output ..." for output and enter it through the corresponding submenu under the command of "Insert" or "Import". The DWF file of AutoCAD is a highly compressed 2D vector file, so the file is relatively small. When sending e-mail or publishing content on the Internet, you can use a web browser, such as Netscape. IE, or you can use the plug-in module WHIP provided by Autodesk! Wait for it to open. DWF format files are only used for output, and can be output through the command "DWFOUT". However, the disadvantage is that the paper space command in AutoCAD R 14 is invalid, or you can set and save the output settings of electronic format files and the AutoCAD Electronic Format Output Driver dialog box on the Printer tab in Tools \ System Settings .... When printing, you can select this setting for output. AutoCAD can use slide file (.SLD) or script command to group files (to quickly display graphics in sequence in the system. SCR), can also be used to make your own dialog box file graphical prompts (. DCL)。 Use the "MSLIDE" command to make slides, and use the "VSLIDE" command to browse slides. When using the "MSLIDE" command, it should be noted that in model space, only the graphics in the current window are made into slides, and in paper space, all windows and graphics in windows are made into slides; In the slide, the graphic parts that are not displayed on the screen and the closed or frozen layers are not included; When making, it should be made on a high-resolution display as much as possible. Second, directly use other software to create a document 1. Other software refers to AutoCAD and MDT data. The default background of general software is white, while the default background of AutoCAD is black. To create a document in other software, you must first change the background of AutoCAD to white, and do the corresponding operation under the Display tab in Tools/System Settings ... Dialog box changes the background to white. Other softwares import AutoCAD drawings by copying, pasting or inserting OLE. After adjusting the position and size of the graphic, the border should be removed to prevent the black edge of the graphic from being printed. In general, the software selects the object and performs the corresponding operation in the pop-up menu with the right mouse button. 2. Cite raster image information in AutoCAD and MDT. In AutoCAD, raster images can be input by copying, pasting or directly dragging. This method is usually suitable for references that have been opened and edited in other software. You can also use "Insert \ Raster Image ..." to insert. This method can manage, adjust, cut, open or close the boundary of the inserted raster image. The disadvantage is that the raster image is linked to the graphic file through the path, which is not a part of the graphic file, so the original raster file cannot be deleted. Otherwise, "Not Found" will be displayed in the list of the Image dialog box, and the original image will be blank. For other formats, you can use Not Found. You can also use "Insert \OLE Object ..." to input, but OLE objects are subject to many restrictions in AutoCAD, such as: they cannot be displayed or printed in inserted blocks and drawings or external reference drawings; Running AutoCAD on a platform other than Windows cannot be displayed or printed; You cannot print with a printer driven by ADI or a non-Windows driver, but you must print with a Windows system printer. If you don't respond to the rotation change of the "PLOT" command, you should change the settings of the system printer. Therefore, when inputting raster images, more suitable methods should be considered comprehensively. In order to solve the problem that it is difficult to adjust the size and position of raster image when printing with other software, AutoCAD is used to print raster image. After raster images are input, those suitable for paper printing can be printed directly through "window selection", otherwise, corresponding auxiliary lines such as paper boundaries should be drawn, and then the position and size of raster images should be adjusted. Finally, use the powerful printing function of AutoCAD to print. After taking pictures of products with digital cameras, some dimensions need to be marked for the sake of product quality or product description. The annotation function in vector drawing software is relatively powerful, that is, it is necessary to establish raster vector mixed files. However, GTX, AutoCAD Overlay and other raster vector hybrid editing software are all professional software, each set costs tens of thousands of RMB, which is not available to ordinary individuals or occasional users. The following use AutoCAD to build raster vector mixed file. After the raster image enters, the corresponding auxiliary lines should be drawn first to adjust the relative position and size of the raster image and vector graphics. If you use "Insert \ Raster Image ...", you can use the corresponding submenus under "Modify \ Entity \ Image", "Modify \ Entity \ Crop Boundary" and "Tools \ Display Order" to perform corresponding operations, in which closing the boundary can ensure that the image will not be accidental. Comprehensive attribute editing ... it is convenient to adjust all parameters at once. In addition, in AutoCAD 2000, you can use the convenient right-click pop-up menu to perform corresponding operations, just like "Paste" or "OLE Object". After adjustment, the vector part can be constructed. Because the angle is not affected by horizontal and vertical linear changes, the angle in some products can be measured or marked by taking photos of the products with a digital camera or scanning them into raster images with a scanner. Sometimes it is necessary to match several images, and then create a raster vector mixed file, draw corresponding auxiliary lines, and remove the raster images. As long as the plane is not inclined and the auxiliary lines are carefully drawn when forming the grating image, the measurement accuracy can meet the general engineering application, sometimes even higher than that of the dividing head measurement. The main application of MDT = modular formation dynamic tester is to test formation pressure. According to the sample points designed by geologists, the formation pressure at the sample points is tested and the pressure gradient is regressed, so as to judge the possible fluid types. The fluid in the formation can also be directly extracted from the sampling point for further chemical analysis. MDT modular formation tester MDT modular formation tester is the third generation cable formation tester of Schlumberger Company. Compared with the other two generations (the first generation FT and the second generation RFT), it has made great progress in formation testing technology and service. With strong combination ability, it has advantages in real-time monitoring of fluid dynamics, strict pressure control sampling, full-face sealing test of double packers, simultaneous measurement of multiple probes, etc., and has made great achievements in oil and gas exploration. The standard MDT tester consists of power module, hydraulic module, single probe module, sampling module, MDT fluid pipeline system and double probe system. Optional modules include multi-probe system, flow control module, pumping module, optical fluid analyzer module, multi-sampling module and double packer module. The so-called modular formation tester means that the formation tester is composed of multiple modules. According to different test purposes and formation conditions, we can choose the appropriate module combination to run into the wellbore to complete the formation test. The main functional modules of the formation tester include power module, hydraulic power module, packer module, probe and pressure measuring module, flow control module, sampling barrel module, fluid identification module, pump displacement module and data interpretation model and method. These modules have different combinations according to different test purposes. The basic functions of modular formation tester MDT mainly include the following parts: (1) accurately measure formation pressure at various points along the wellbore; (2) Take out high-quality formation fluid samples (keep formation pressure and eliminate real formation fluid affected by mud filtrate); (3) According to different formation characteristics, determine the best test parameters (flow, test chamber volume, etc.). ) control and selection on the ground, so as to sample and test special (such as low permeability) strata; (4) The bubble point pressure of formation fluid can be measured in real time, and the performance of fluid flowing through the instrument and sampling chamber can be controlled and monitored synchronously. Its extended functions include: (4. 1) accurately judging the oil-water and oil-gas interface according to the pressure gradient curve; (4.2) Judge whether the formation contains oil and gas, and provide samples of formation fluid for laboratory analysis, so as to obtain the composition, phase state and various physical parameters of the fluid; (4.3) According to the pressure response under the known flow rate, the spatial distribution of permeability is inversed, so as to determine the seepage capacity of the reservoir and predict the productivity; (4.4) The vertical distribution of formation pollution coefficient can be measured. Working process of formation tester: The pressure measurement process of modular formation tester is similar to RFT. The sampling process is different from RFT because of the additional functions of fluid identification and pump discharge. The specific steps are as follows: (1) According to the test purpose and task requirements, select the appropriate functional modules and complete the assembly of the formation tester on the ground; (2) Positioning the modular formation tester in the wellbore through imaging logging (such as FMI); (3) Close the balance valve and rely on the hydraulic motor to push the instrument probe against (or seal the packer) the borehole wall; (4) Set a moving piston with appropriate speed to extract formation fluid, identify the formation fluid entering the instrument during the pumping process, and pump the formation fluid sample into the sampling cylinder when the content of pollutants (mud and its filtrate) is determined within the allowable range; (5) Re-select pressure measurement and sampling points, repeat the above process, and conduct multiple sampling.