Dipmeter 3 plots the following types of charts for a given depth interval from ascii data. There are currently a wide variety of imaging tools available, though these predominately fall into two categories. Gilreath, a schlumberger interpretation engineer who developed the red, green, blue pattern method of. May 31, 2016 dipmeter data, borehole image logs and interpretation 1. The dipmeter advisor was an early expert system developed in the 1980s by schlumberger with the help of artificialintelligence workers at mit to aid in the analysis of data gathered during oil exploration.
Stratigraphic interpretation using formation imaging and. Adams jt, ayodele jk, bedford j, kaarssijpestijn ch, watts nl 1992 application of dipmeter data in structural interpretation, niger delta. Structural interpretation of dipmeter log a case study. The dipmeter advisor a dipmeter interpretation workstation. Dipmeter refers to the bedding data depth, dip, azimuth, quality, etc. Geotechs standard dipmeter is a water level measuring. The atex dipmeter is a high precision water level measuring instrument designed for use in harsh landfill environments. Bigelow in making more intelligent use of dipmeter information, published in the log analyst in five parts beginning january 1985.
This course provides numerous handson exercises and case studies that emphasize sedimentologic, stratigraphic, and structural applications of these widely run, but. Application of a modern electrical borehole imager and a new image interpretation technique to evaluate applications of dipmeter and borehole image data in static models the porosity and permeability in carbonate reservoirs. Interestingly, it does appear that the interpretation alternatives of convex versus concave upper surface may be simplistic and that the shape of the upper surface is variable along the length of this bartlesville sandstone body. Associated interpretation workflows offer the high level of detail that is needed to make operational decision and to increase the predictability of subsurface models. In this well, a minor normal drag fault has been identified and its orientation has been determined. Structural interpretation of dipmeter log a case study from. Crains petrophysical handbook structural analysis dip. Schlumberger, 1986, dipmeter interpretation fundamentals. The dipmeter advisor was an early expert system developed in the 1980s by schlumberger. Imaging the overturned limb of a footwall syncline and its. The imager was not used to create the input dip data. The dipmeter advisor system a case study in commercial expert system development reid g.
Kgsofr 200265dipmeter analysis, cherokee bartlesville. As part of a subsurface evaluation team the geophysicists and geologists interpret subsurface data and provide geological models that form the basis for development planning. Objective the aim of this log is to determine the angle to the horizontal and the azimuth referenced to magnetic north and geographcal north of the dip of the planes cut by the well. Dipmeter data, borehole image logs and interpretation 1. Dug insight takes a fresh approach to seismic interpretation software, with powerful features integrated into an easytouse interface. Applications of dipmeter and borehole image data in static. Structural interpretation of dipmeter and image logs is an essential technique to locally calibrate seismic maps and capture gross rock volume. The move suite provides a platform for integrating and interpreting data, crosssection construction, 3d model building, kinematic restoration and validation, geomechanical modelling, fracture modelling, fault response modelling, fault and stress analysis, and sediment modelling. Aapg memoir 92 portrays key applications of dipmeter and image log data across the exploration and production life cycle. An overview of the thought processes were described by e. We have observed during this effort that the development of a commercial expert system imposes a substantially different set of constraints and. Dipmeter also refers to an older tool with 4, 6 or 8 buttons borehole image logs refer. Dipmeter also refers to an older tool with 4, 6 or 8 buttons borehole image logs refer to any tool that samples an array of measurements in the borehole. Highresolution electrical borehole images while drilling.
Plots include dip logs, polar plots, fold axis plots, tangent diagrams, rose plots, stick plots, scat plots, and syndev plots. Threedimensional display of image interpretations fracture intensity, dip and azimuth of conductive or resistive fractures. Analysis, interpretation, and plotting of dipmeter data using rda. Synthetic deviation syndev plots are derived from the treatment of dips as borehole deviations. Ghosh petropysics division, kdmipe, ongc, dehradun india summary dipmeter logging tool has gained acceptance in petroleum industry as a means to define subsurface sedimentary. These plots can bring out subtle geologic features not readily apparent on the standard tadpole plots of cumulative dip plots. Grid dip oscillator gdo, also called grid dip meter, gate dip meter, dip meter, or just dipper, is a type of electronic instrument that measures the resonant frequency of unconnected, nearby radio frequency circuits. The tape is wound on a plastic coated metal carrying frame.
With our geodes software, now you can see whats really down there. A case history from the permian basin, united states. The dipmeter advisor system a case study in commercial. I did this because i routinely use this instrument with a digital frequency counter attached to show frequency, and found that the capacitance markings were of more value to me for checking junkbox inductors by connecting them in place of the instruments regular coils. Laterolog photoclinometer dipmeter log presentation. Synthetic deviation syndev can bring out subtle features. The borview module enables detailed dipmeter and image interpretation. Geoscience software is a powerful, easy to use geotechnical software application for geologists and petrophysicists. Unfortunately this method had limited application in more complex geological environments outside the gulf coast, and the dipmeter advisor was primarily used within schlumberger as a graphical display tool to assist interpretation by trained geoscientists, rather than as an ai tool for use by novice interpreters. Ultrasonic images ubi, cbil, cast lwd images gr, density, resistivity and so on. While the terms interpreter and translator are generally used interchangeably, they are actually two distinct professions. This software provides structural and stratigraphic interpretation of processed dipmeter data or image derived dips. When the probe touches the surface of the water a light is illuminated on the cable winder and a buzzer gives an audio signal.
From these primitive beginnings, however, the dipmeter has evolved to become a device capable of providing a major input into a complete geological description of the formations crossed by a borehole. Dips fit one of five general patterns, each defined by the color of the pencil used to mark them. It is for this basic purpose that the electric wireline technique known as the dipmeter was designed. Starting out as the sole interpreter and processor for hef petrophysical consulting, paul passed his attention to detail, meticulous quality control, and strong sense of family on to his employees.
Exploration in braided stream environments using dipmeter. Fill in the form below and a link to the download file will be. Over the years, paul has been instrumental in tool development, assisiting with design and processing software. It was developed by geotechnical professionals rather than specialized computer programmers. While some professionals are able to both interpret and translate, most do only one or the other because each requires a different skill set to perform. Geosteering horizontal wells into the sweet spot of thin nonconventional reservoirs, examples from the cardium sand of. Data may be extracted from las files with lasdatasampler 4 included with dipmeter3, or created as a spreadsheet. Borehole image and production logging drives well interventions in horizontal gasoil gravity drainage wells in a giant middle eastern carbonate field e. Society of professional well log analysts annual logging symposium, 28th. The application of borehole image logs to fluvial facies.
Borehole imaging and dipmeter, principles, processing and interpretation borehole image is one of the most important logging tools because of its high resolution measurement and the different answer products that can this training will introduce a detailed explanation about dipmeter analysis and the different types of bore hole images either wireline or lwd. Analytical techniques include fold axis analysis, residual dip analysis dip rotation, statistical curvature analysis scat, and synthetic deviation syndev. The traditional analysis of dipmeters makes use of patterns seen on the arrow plot, augmented by those seen on azimuth frequency plots. Structural interpretation of dip data successful structural dip interpretation is based on the good knowledge of geometrical and geological character. Recent breakthroughs in acquisition, tool design, and modeling software provide realtime subsurface images of incredible detail, from the drill bit straight to a workstation. This article is based on crains dipmeter omnibus by e. Geologic interpretation from traditional marker picking to advanced geology. The move suite provides a platform for integrating and interpreting data, crosssection construction, 3d model building, kinematic restoration and validation, geomechanical modelling, fracture modelling, fault response modelling, fault and stress analysis, and sediment modelling move 2019. Dipmeter data, borehole image logs and interpretation kris vickerman may 25, 2016 2. For reservoir development, knowledge that a zone contains thin laminations may.
Dipmeter wagtech dipmeters are robust, light and convenient in use, and are all fitted with an extremely strong tape marked in metres and centimetres. The aim is reached by the analysis of the fluvial facies characteristics, such as bedding type, spatial arrangement of crosslamination, lateral accretion dips, and gradual vertical grainsize successions, which have a high potential to show up in the resistivity and dipmeter patterns of the borehole images. Advanced dipmeter analysis crains petrophysical handbook. In the general case, a catalog of field examples of dip plots from various known depositional environments is a valuable aid to stratigraphic dipmeter interpretation. Although rare, examples can be found in files for wells drilled in the 1940s. Fill in the form below and a link to the download file. Our seismic interpretation software, dug insight is a fullfeatured 2d3dprestack visualisation and interpretation package. Applications of dipmeter and borehole image data in static models.
Schlumberger fundamentals of dipmeter interpretation. Dipmeter devices have a wide variety of applications in a number of different fields. Geodes implements several innovative techniques in dipmeter analysis, including scat, enabling you to analyze your dipmeter data quickly, accurately, and completely. In 1992, paul heffernan saw a need for specialized borehole image and dipmeter interpretation and he created a company that would respond to that need.
They show the textural changes, the thin shale beds, and the open fractures that control the flow within the reservoirs. Exploration and development of these systems are challenging despite the simple sand geometry involved. Images of these oriented sedimentary features, in combination with conventional dipmeter interpretation, define the stratigraphic units and the reservoir geometry beyond the wellbore. Interpretation and application of borehole image logs in a new generation of reservoir models for a cluster of fields. The advisor was generally not merely an inference engine and a knowledge base of 90 rules. The atex dipmeter from geotech is a high precision water level measuring instrument designed for use in harsh landfill environments. Hurst a, griffiths cm, worthington pf eds geological application of wireline logs ii. The dipmeter advisor a dipmeter interpretation workstation gordy g. Nowadays, even if the borehole imaging is dominating the oil industry, older data are there and need to be processed and interpreted by new tools and news ideas. The key objective of dipmeter and boreholeimage interpretation is to describe structural and stratigraphic features encountered by a wellbore, commonly in the absence of core. The atex dipmeter is a water level measuring instrument for. Pdf applications of dipmeter and borehole image data in static.
Two case studies, including whole core analyses, are used to demonstrate the synergism between formation imaging and dipmeter interpretation. The focus is on being able to understand the job functions that are typically performed at the wellsite, and what use is made of the large amounts of data collected. Bigelow in making more intelligent use of dipmeter information. Dipmeter article about dipmeter by the free dictionary. Bruce has analyzed several hundreds of dipmeter and image log data sets and outcrop orientation data from a wide variety of structural geology settings including compressional, strike slip and extensional regimes. Many exploration and production companies have acquired a wealth of dipmeter and image log data. The dipmeter ad visor a dipmeter inter pretation workstation gordy g. Structural interpretation of dipmeter log a case study from baramura field of tripura. An unconformity has been picked in this well at 1883. Associated interpretation workflows offer the high level of detail that is needed to make operational decision and to increase the predictability of. We discuss commercial expert system development, using our experience with the dipmeter advisor system as a case study. The meter contains a needle that adjusts its position based on the resonant frequency being measured. A key step in structural dipmeter analysis is to estimate. Dipmeter data, borehole image logs and interpretation kris vickerman.
The role of the dipmeter data in fracture detection has been described. As a framework built to comply with industry standards, geoframe delivers a suite of seamlessly integrated exploration and production applications. Geologists, cognitive scientists, software developers and other industry stakeholders put their heads together at a recent hedberg conference to share insights on the 3d interpretation and spatial thinking skills that are vital to geoscience. Society of professional well log analysts annual logging symposium, 28th, london, england, 1987, transactions, p. Dipmeter data, borehole image logs and interpretation slideshare. This course provides a complete overview of wellsite operations from the perspective of the operations geologist and the wellsite geologist. Other units are more complicated and can connect directly to a computer and output their findings using associated computer software.
This article provides a summary of key applications of dipmeter and bhi log data in 3d static models. In spite of this, the value of the dipmeter analysis in establishing sandstone strike is. The atex dipmeter is a water level measuring instrument. Welling chapter 19 343 interpretation and application of borehole image logs in a new generation of reservoir models. The dipmeter advisor system a case study in commercial expert. Rda dipmeter analysis software was used to carry out an interactive scat and vector section analysis. Oct 04, 20 this video is considered as an educational video used for nonprofitable purpose for all petroleum and nonpetroleum students in bue the british university in egypt and any other user for. Can also be used for borehole trajectory tracking of sidetracks or closein development wells. This data was imported into the dipmeter analysis package with the stratigraphic top of the dipmeter data pointing up. Integration of structural analysis derived from borehole dipmeter data with 3d seismic data allows better structural control in complex structural settings. Most of todays dip meter interpretation methodology is based on. Flow chart for dipmeter processing decisions upper, interpretation lower for structural analysis.
It is a typical example of the class of programs that deal with what has come to be known as signal to symbol transformation. Analysis of dipmeter data structure the traditional analysis of dipmeters makes use of patterns seen on the arrow plot, augmented by those seen on azimuth frequency plots. An ebook reader can be a software application for use on a computer. It is therefore designed to provide common workflows that geologists perform to develop their understanding of an. Borehole imaging is among the fastest and most accurate methods for collecting high resolution subsurface data. Typical computed results from the sp or resistivity dipmeter are shown below. Advanced dipmeter analysis using synthetic dipmeter curves. The application of borehole image logs to fluvial facies interpretation. It illustrates the value of integrating highresolution dipmeter and borehole image data with seismic, welllog, and geological knowledge in order to construct integrated subsurface modes. Analytical techniques include fold axis analysis, residual dip analysis dip rotation, statistical curvature. My dip meter dial is calibrated in picofarads instead of the usual mhz or khz markings.
Core description llc is a leader in the application of digital coredescription methods worldwide. Integration of structural analysis derived from borehole dipmeter data with. A profitable development of an oil or gas field starts with a good understanding of the subsurface. The dipmeter advisor system is the result of a four year effort by schlumberger to apply expert systems technology to problems of welllog interpretation. Dug insight seismic interpretation software downunder. Paul started his career as a field engineer in various locations in the usa and canada before working as a product development engineer specializing in fmi and dipmeter for schlumberger canada. Dipmeter was the first logging tool introduced in the drilling industry. All boreholes detailed in this release except esrab19 and esrab1916 have been geophysically logged by century wireline services with a suite of tools including natural gamma, caliper, long and short spaced density, resistivity, deviation and dipmeter. Consultancy in a diverse range of exploration and development projects for operating oil companies. The dipmeter conductivity curves, however, carry other information of importance for reservoir engineers. Geotechs standard dipmeter is a water level measuring instrument designed for people working in routine groundwater monitoring. While the data is too sparse for definitive results, several ideas have emerged as important and suggestive as guidelines for subsequent commercial expert system undertakings.
Dipmeter data, borehole image logs and interpretation. Jim morse and dimitri massaras, computational geology inc. Bruno dantin experienced software and saas sales professional seeking new opportunities at none london. Studies have included borehole image and dipmeter analysis, core goniometry, structural studies, fracture and fault analysis. Schlumbergers dipmeter advisor system attempts to emulate human expert performance in dipmeter interpretation. Baker schlumbergerdoll research old quarry road ridgefield, connecticut 06877 abstract we discuss commercial expert system development, using our experience with the dipmeter advisor system as a case study. It utilizes dipmeter patterns together with local geological knowledge and measurements from other logs. Analysis, interpretation, and plotting of dipmeter data using. Analysis, interpretation, and plotting of dipmeter data. Aq12 applications of dipmeter and borehole image data in static. Imaging the overturned limb of a footwall syncline and its impact on exploration in fold and thrust belts.
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