The markerfree alignment is based on cross correlation methods and projection matching. Res2dinv software is designed to interpolate and interpret field data of electrical geophysical prospecting 2d sounding of electrical resistivity conductivity and induced polarization. We design seismic borehole sources and receivers and develop specifically tailored software. Protomo is a software package used in electron tomography for markerfree alignment and 3d reconstruction of tilt series. A tomogram is a series of 2d images, called slices which stack together to form a 3d image. Divine microseismic and seismic tomographic imaging software. New tomography software for cross hole sonic logging. Highlights laboratory study of cross hole ert in wellknown and controlled conditions. This software package includes crosshole survey design, model building and modeling, data preprocessing, cdp transformation, tomography, waveequation. Our software reflexw is one of the worlds most popular geophysical near surface. Reflexw software, according to selected module, covers complete range of wave data seismic, gpr, ultrasound and their processing through different geometry assembling such as refraction seismic, reflection seismic, surface investigations and borehole.
Second, it significantly increases the resolution capability of observations. Ertlab is the 3d resistivity and chargeability inversion software that has radically changed the approach to electrical resistivity tomography ert surveys. The software is used to process seismic crosshole testing data obtained after astm4428 and to output results. Crosshole ultrasonic tomography and its application to. This is a package that reconstructs ct data from first, third, fourth. Imaging with crosshole seismoelectric tomography request pdf. Transmission electron tomography fills the gap between high resolution structural methods xray diffraction or nuclear magnetic resonance and optical microscopy.
We developed new software for transmission electron tomography, tomoj. Scxt3000 is a selfcontained sonic logging system, suitable for testing concrete piles, barrettes and other mass concrete structures. The only data files that the demo version can read are the data files included with the. Reflexw gpr and seismic processing software sandmeier. Application of pattern filtering method in crosshole. X86 version of diinso is totally free and can be use in scientific purposes, but it also has not any guarantees, so use diinso at your own.
Its numerical core, based on tetrahedral finite elements, allows the user to input complex topographic information and to invert datasets collected using surface. Electrical tomography software res3dinv, electrical imaging. Tomography is a mathematical procedure that is applied to crosshole sonic logging csl data, providing the user with a visual image of a shafts internal defects. The inversion of the resistivity and ip data is conducted by leastsquare method involving finiteelement and finitedifference methods.
Tomogram and cross hole results show that pwave velocities are in the range between 1400 and 5000 ms. Zondst2d is designed for twodimensional interpretation of seismic tomography data on refracted and reflected waves land, crossborehole and water variants. The most comprehensive ct anatomy atlas on the appstore no hidden inapp purchases the first and only ct anatomy atlas that includes lower extremities. Cross borehole tomography can be thought of as an extension of sonic logging to the reservoir cross section between two boreholes. Seismic data processing software geotomographie gmbh. Crosshole traveltime tomography pygimli geophysical.
Established in 1972, pdi continues to innovate, develop, manufacture and supply stateoftheart qaqc testing and monitoring products and software for the deep foundations industry. Pditomo pile dynamics has released the new pdltomo software for analysis of crosshole sonic log ging csi data. Crosshole sonic logging csl is a method to verify the structural integrity of drilled shafts and other concrete piles the csl method is considered to be more accurate than sonic echo testing in the determination of structural soundness of concrete within the drilled shaft inside of the rebar cage. Clinical spectrum of lamellar macular defects including. Our reconstruction processing engine is optimized for multicore processors, efficient memory access and low cost graphics processing card.
Pengambilan data untuk tomografi cross hole dengan konfigurasi polepole, polebipole, bipolepole dan bipolebipole. Laboratory study of the crosshole resistivity tomography. Pengambilan data untuk tomografi crosshole dengan konfigurasi polepole, polebipole, bipolepole dan bipolebipole. Qualitative and quantitative analysis of certain electrode arrays. Pditomo tomography software for crosshole sonic logging. The information obtained from cross borehole tomography, when properly interpreted in the context of all available information, can often be invaluable for preparing accurate geological cross sections for reservoir development and planning.
Computed tomography ct or computed axial tomography cat is most often associated with imaging the body because it enables clinicians to see the anatomical structure inside the patient without having to do any surgery. Application of crosshole tomography for assessment of. Borehole seismic tomography involves the measurement of the travel times of seismic ray paths between two or more boreholes in order to derive an image of seismic velocity in the intervening ground. The reduction of resistivity variation near boreholes improves the quality of results since this area has very high sensitivity values, leading to high resistivity anomalies in the model, even. Application of cross hole seismic tomography in characterization of heterogeneous aquifers. Grlweap is a onedimensional wave equation analysis program that simulates the pile response to pile driving equipment. Scxt3000 cross hole sonic logging system james fisher. Computed tomography ct is a powerful nondestructive evaluation nde technique for producing 2d and 3d cross sectional images of an object from flat xray images. Directinverse solver diinso is an electrical resistivity tomography ert software which orient to solve 3d direct and 2d3d inverse problems on direct current dc. It predicts driving stresses, hammer performance, the relation between pile bearing capacity and net set per blow and the total driving time.
Sippi includes a reference cross hole gpr data from arrenaes set is also available, and will be used here to demonstrate the use of sippi to solve cross hole tomographic inversion in a probabilistic framework. Our smooth inversion tomographic method is based on physically realistic modeling of. Seismic tomography, crosshole, downhole geotomographie gmbh. Sis offers inhouse 2d and 3d computed tomography software. There are many programs designed to view tomograms, and i have listed some of the more popular choices below particularly programs which can segment and visualize the data.
First, the cross hole seismic tomography method eliminates depthrelated restrictions during observations compared to the surface methods, which allows for the conduction of surveys down in deep depths even given constricted conditions within an urban area. Electron tomography protomo welcome to the protomo website. Fewer boreholes are needed to achieve a continuous picture of the subsurface thereby reducing overall costs and the risk of missing target features. Following picking the raw traveltime data is input into the modeling software and the ray coverage between. The arrays supported include polepole, poledipole, inline dipoledipole, equatorial dipoledipole, wennerschlumberger and also nonconventional arrays. Additional methods supported by the chum are single hole ultra sonic testing sslshut and tomography two and threedimensional. There are many programs designed to view tomograms, and i have listed some of the more popular choices below particularly programs which can segment and visualize. Crosshole seismic tomography which involves measuring travel times of seismic ray paths between two or more. This method provides little indication of concrete soundness outside the cage. Ertlab is the resistivityip inversion software that offers full threedimensional modeling and inversion. This section contains examples for setting up and running an cross hole tomographic inversion using sippi using the reference data from arren. First, the crosshole seismic tomography method eliminates depthrelated restrictions during observations compared to the surface methods, which allows for the conduction of surveys down in deep depths even given constricted conditions within an urban area. Seismic methods can provide detailed information about rock properties and geological structure between boreholes. We propose a crosshole imaging approach based on seismoelectric conversions sc associated with the transmission of seismic waves from seismic sources located in a borehole to receivers.
Software for 3d seismic data processing and inversion. It is great for learning general anatomy or showing patients a normal ct scan for comparison. Cross hole seismic tomography outline borehole seismic tomography involves the measurement of the travel times of seismic ray paths between two or more boreholes in order to derive an image of seismic velocity in the intervening ground. Crosshole ultrasonic tomography and its application to karst. The chum cross hole ultra sonic monitor uses the crosshole sonic logging csl method to perform highresolution quality control of deep foundations the system uses an ultra sonic wave sent from a transmitter to a receiver pulled through water filled access tubes embedded in the concrete. Engineered by james fisher testing services own development team, this ultrasonic pile testing system is supplied with a military spec rugged notebook computer as standard, enabling the operator to perform testing in difficult conditions. It is showed that pfm is a very effective tool in crosshole tomography signal processing, and is prospective for utilization in other realms of engineering. Pdf application of crosshole seismic tomography in. Model stacking technique to improve the quality of resistivity models.
Application of crosshole tomography for assessment of soil. Geophysics at the borehole and crossborehole scale usgs. Our smooth inversion tomographic method is based on physically realistic modeling of first break propagation for pwave and swave surveys. Imaging the vitreous in optically transparent and translucent ocular media using oct and in optically opaque ocular media using ultrasound is discussed. Cross hole seismic tomography which involves measuring travel times of seismic ray paths between two or more boreholes in order to derive an image of seismic velocities between the wells offers an. Crosshole sonic logging csl and 3d tomography what is crosshole sonic logging csl csl integrity testing is performed by transmitting and receiving an ultrasonic signal between two parallel access tubes cast into a deep foundation element. With more than 1600 sold licences our software reflexw is one of the worlds. Its numerical core, based on tetrahedral finite elements, allows the user to input complex topographic information and to invert datasets collected using surface, borehole or surfaceto hole array configurations.
Results figures 3b, 3c and 3d show the results of the tomography, crosshole and downhole surveys, respectively. Based on your download you may be interested in these articles and related software titles. Zondst3d is designed for threedimensional interpretation of seismic tomography data on refracted waves land, crossborehole and water. Ertlab makes use of finite elements algorithm for the accurate modeling of the terrain topography. Sy8 cross hole sonic logging analyzer software can display the threedimensional tubular slice diagram, that is, the variation of the speed value of the external profile of the pile tested is displayed by using the chromatogram, and then the chromatogram is crimped and connected to form the tubular slice diagram to show. It is possible to implement the deviation of the boreholes. We present the major differences between assessing shaft integrity using standard csl and data presentation versus crosshole sonic logging tomography cslt and 3d data visualization. Multihole seismic modeling in 3d space and crosshole seismic tomography analysis for boulder detection.
The 3d ct wizard facility allows users to quickly set up and scan a component to obtain 3d ct data. Ertlab is the 3d resistivity and chargeability inversion software that has radically changed the approach to electrical resistivity tomography ert surveys, allowing full flexibility in the threedimensional arrangement of the electrodes and creating the market of resistivity surveys around buildings. Csl integrity testing allows an evaluation of concrete integrity and homogeneity within the shaft. Boundless electrical resistivity tomography bert 2 the. Computerized tomography free download tucows downloads. Crosshole sonic logging eval uates the integrity of the con crete of drilled shafts and other. Measurement of fullthickness macular hole size using en. Multihole seismic modeling in 3d space and crosshole.
The only data files that the demo version can read are the data files included with the program set. Tomogram and crosshole results show that pwave velocities are in the range between 1400 and 5000 ms. Aug 06, 20 this paper will demonstrate that, at a minimum, csl data can be processed and presented in two and threedimensional format for a shaft. Solutions for borehole and nearsurface seismic surveys. Our rayfract refraction tomography software allows reliable imaging of subsurface velocity structure including faults, strong lateral velocity variation and other velocity anomalies. Seismic data can be sorted and edited and traveltimes can be determined. The geophysical tomography team crosshole resistivity. The information obtained from crossborehole tomography, when properly interpreted in the context of all available information, can often be invaluable for preparing accurate geological cross sections for reservoir development and planning. Geophysics at the borehole and crossborehole scale carole johnson, john lane and john williams ogwbranch of geophysics. To assess the feasibility and interest of measuring macular hole mh size using en face optical coherence tomography oct compared with manual diameter measurements on b.
Results figures 3b, 3c and 3d show the results of the tomography, cross hole and downhole surveys, respectively. Trying to read any other data files will make the program exit. Geotomographie, founded in 1999 in germany, provides complete solutions for borehole and nearsurface seismic surveys to geophysical, engineering and mining companies. Optical coherence tomography oct is an imaging modality that has revolutionised the way a myriad of ocular conditions are now diagnosed and monitored. Crosshole or crosswell seismic measures the velocity of seismic waves between boreholes. Established in 1972, pdi continues to innovate, develop, manufacture and supply stateoftheart qaqc testing and monitoring products and. X86 version of diinso is totally free and can be use in scientific purposes, but it also has not any guarantees, so use diinso at your own risk. The program re places an older tomography program, with sgnificant advan tages. The toolbox apps generally take a set of projections xray intensity measurements and filter and back project them in order to recreate the image or volume that the projections represent. There are many types of tomography, and i work with one called electron tomography.
Aug 06, 2007 transmission electron tomography fills the gap between high resolution structural methods xray diffraction or nuclear magnetic resonance and optical microscopy. Characteristics of the internal structure of an object such as dimensions, shape, internal defects, and density are readily available from ct images. Sensitivity analysis of cross hole electrode arrays. This paper will demonstrate that, at a minimum, csl data can be processed and presented in two and threedimensional format for a shaft. We propose a cross hole imaging approach based on seismoelectric conversions sc associated with the transmission of seismic waves from seismic sources located in a borehole to receivers. In areas with complex geology, there is no substitute for a fully 3d surveys.
Jeol usa offers tomography support that consists of three software packages. Following picking the raw traveltime data is input into the modeling software and the ray coverage between displayed as a ray density profile right. Crosshole seismic tomography which involves measuring travel times of seismic ray paths between two or more boreholes in order to derive an image of seismic velocities between the wells offers an. Crossborehole tomography can be thought of as an extension of sonic logging to the reservoir cross section between two boreholes. Tomoj is a plugin for the now standard image analysis and processing software for optical microscopy, imagej. This provides an initial indication of the amount of data within different sections of the profile and helps illustrate the resolution of the final model. Tomography software for crosshole sonic logging csl data quality assurance for deep foundations what is tomography. Copenhagen computed tomography toolbox is a collection of applications and libraries for flexible and efficient ct reconstruction. Finally the wave velocities were calculated for different depth ranges by means of a linear regression figure 3d. Pdi, is the largest manufacturer of industrystandard, high quality deep foundation testing solutions, worldwide. A powerful pattern filtering software has been developed by delphi tool, and batch signals can be more efficiently processed. Scientific results from the mallik 2002 gas hydrate production research well program, mackenzie delta, northwest territories, canada. Borehole seismic methods largely fall into two categories, namely, crosshole seismics and seismic tomography.
Sales, rentals of seismic sources, receivers and processing software, training and support. In crosshole seismic tomography, traveltime inversion uses first arrival times to. The chum is fully compliant to astm d6760 16, afnor nf p 941601 and additional standards. Overview historical data and geologic maps surface geophysics borehole geophysics crosshole testing hydraulic measurements hydraulic testing, water levels, sampling, pumping tests. Computed tomography ct is a powerful nondestructive evaluation nde technique for producing 2d and 3d crosssectional images of an object from flat xray images. Divine, microseismic processing, vsp, reflection and crosshole. In the built environment engineered surfaces or infrastructure e. Geophysics at the borehole and crossborehole scale carole johnson, john lane. The markerfree alignment is based on crosscorrelation methods and projection matching. It is showed that pfm is a very effective tool in cross hole tomography signal processing, and is prospective for utilization in other realms of engineering. Crosshole ultrasonic tomography is referred to ray tracing by griding method and image reconstruction by combining the successively linearized iteration with damping leastsquares qr decomposition, with which the result has better precision than that with crosshole seismic tomography by using the same inversion method in engineering geological investigation. The conventional approach involves lowering a 3component borehole geophone down one hole while lowering a source down an adjacent holes, firing the source at some prescribed depth interval. Next, we build the crosshole acquisition geometry with two shallow boreholes.