Engineering Geology Field Manual
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CL Jones, CG Bowles, and KG Bell Released to Open Tiles This Report Is
EXPEm:MENTAL DRILL HOLE LOGGIlIl IN PO'W!R DEPOSITS OF THE CARISBAD DISTRICT, N»1 MEXICO C. L. Jones, C. G. Bowles, and K. G. Bell TJ. S. GEOLOGICAL SURVEY This report is prelimi:csry\ "-- and has not been edtted or ,,"- Released to open tiles reviewed tor conformity to ~ /' r- /'-' Geological Survey standards _~(1..~~_'--:_ '~_ ~~~~ .. .. I or nomenclature. / ,I 1- COtll'e:tf!'S; Page Abstract -------------~------------------------------------------1 ~troduct1on -------------------------------------------------7- 2 4 Geology -----------------------------------------------------~- ---------------------------------------------------~-- 7 Equipment .. 8 Drill hole data ----------------------------------------------~-- Supplementary ~e8ts -~_._----_.------------------------------~--- 10 Gamma-ray logs --~------------------------------------------y----11 Grade aDd th1clc1ess est1mates f'rom gamma-ray logs ---------- 14 l'leutron lop -------------....--------..........---.....------.------------ l5 Electrical resistivity logs ------------------------------------ 18 21 Literature cited -----------------------------------------._----- ILLUSTRATIONS Figure 1. Generalized columnar section and radioactivity log of potassium-bearing rocks -------------------------- 2. Abridged gamma-ray logs recorded by commercial All companies and the U. S. Geological Survey --------------- figures Lithologie, gamma-ray, neutron, and electrical resistiVity logs .-------~-_.---------------.------------ are in 4. Abridged gamma-ray and graphic logs of a potash -
Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden Geofysisk Borrhålsloggning I Apatitjärnmalmer, Norra Bergslagen
Independent Project at the Department of Earth Sciences Självständigt arbete vid Institutionen för geovetenskaper 2017: 32 Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden Geofysisk borrhålsloggning i apatitjärnmalmer, norra Bergslagen Philip Johansson DEPARTMENT OF EARTH SCIENCES INSTITUTIONEN FÖR GEOVETENSKAPER Independent Project at the Department of Earth Sciences Självständigt arbete vid Institutionen för geovetenskaper 2017: 32 Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden Geofysisk borrhålsloggning i apatitjärnmalmer, norra Bergslagen Philip Johansson Copyright © Philip Johansson Published at Department of Earth Sciences, Uppsala University (www.geo.uu.se), Uppsala, 2017 Abstract Downhole Physical Property Logging of the Blötberget Iron Deposit, Bergslagen, Sweden Philip Johansson Geophysical methods are frequently applied in conjunction with exploration efforts to increase the understanding of the surveyed area. Their purpose is to determine the nature of the geophysical response of the subsurface, which can reveal the lithological and structural character. By combining geophysical measurements with the drill core data, greater clarity can be achieved about the structures and lithology of the borehole. The purpose of the project was to give the student an opportunity to discover borehole logging operations and to have a greater understanding of the local geology, in particular the iron mineralizations in the apatite iron ore intersected by the boreholes. -
Porosity and Permeability Lab
Mrs. Keadle JH Science Porosity and Permeability Lab The terms porosity and permeability are related. porosity – the amount of empty space in a rock or other earth substance; this empty space is known as pore space. Porosity is how much water a substance can hold. Porosity is usually stated as a percentage of the material’s total volume. permeability – is how well water flows through rock or other earth substance. Factors that affect permeability are how large the pores in the substance are and how well the particles fit together. Water flows between the spaces in the material. If the spaces are close together such as in clay based soils, the water will tend to cling to the material and not pass through it easily or quickly. If the spaces are large, such as in the gravel, the water passes through quickly. There are two other terms that are used with water: percolation and infiltration. percolation – the downward movement of water from the land surface into soil or porous rock. infiltration – when the water enters the soil surface after falling from the atmosphere. In this lab, we will test the permeability and porosity of sand, gravel, and soil. Hypothesis Which material do you think will have the highest permeability (fastest time)? ______________ Which material do you think will have the lowest permeability (slowest time)? _____________ Which material do you think will have the highest porosity (largest spaces)? _______________ Which material do you think will have the lowest porosity (smallest spaces)? _______________ 1 Porosity and Permeability Lab Mrs. Keadle JH Science Materials 2 large cups (one with hole in bottom) water marker pea gravel timer yard soil (not potting soil) calculator sand spoon or scraper Procedure for measuring porosity 1. -
Impact of Water-Level Variations on Slope Stability
ISSN: 1402-1757 ISBN 978-91-7439-XXX-X Se i listan och fyll i siffror där kryssen är LICENTIATE T H E SIS Department of Civil, Environmental and Natural Resources Engineering1 Division of Mining and Geotechnical Engineering Jens Johansson Impact of Johansson Jens ISSN 1402-1757 Impact of Water-Level Variations ISBN 978-91-7439-958-5 (print) ISBN 978-91-7439-959-2 (pdf) on Slope Stability Luleå University of Technology 2014 Water-Level Variations on Slope Stability Variations Water-Level Jens Johansson LICENTIATE THESIS Impact of Water-Level Variations on Slope Stability Jens M. A. Johansson Luleå University of Technology Department of Civil, Environmental and Natural Resources Engineering Division of Mining and Geotechnical Engineering Printed by Luleå University of Technology, Graphic Production 2014 ISSN 1402-1757 ISBN 978-91-7439-958-5 (print) ISBN 978-91-7439-959-2 (pdf) Luleå 2014 www.ltu.se Preface PREFACE This work has been carried out at the Division of Mining and Geotechnical Engineering at the Department of Civil, Environmental and Natural Resources, at Luleå University of Technology. The research has been supported by the Swedish Hydropower Centre, SVC; established by the Swedish Energy Agency, Elforsk and Svenska Kraftnät together with Luleå University of Technology, The Royal Institute of Technology, Chalmers University of Technology and Uppsala University. I would like to thank Professor Sven Knutsson and Dr. Tommy Edeskär for their support and supervision. I also want to thank all my colleagues and friends at the university for contributing to pleasant working days. Jens Johansson, June 2014 i Impact of water-level variations on slope stability ii Abstract ABSTRACT Waterfront-soil slopes are exposed to water-level fluctuations originating from either natural sources, e.g. -
Effective Porosity of Geologic Materials First Annual Report
ISWS CR 351 Loan c.l State Water Survey Division Illinois Department of Ground Water Section Energy and Natural Resources SWS Contract Report 351 EFFECTIVE POROSITY OF GEOLOGIC MATERIALS FIRST ANNUAL REPORT by James P. Gibb, Michael J. Barcelona. Joseph D. Ritchey, and Mary H. LeFaivre Champaign, Illinois September 1984 Effective Porosity of Geologic Materials EPA Project No. CR 811030-01-0 First Annual Report by Illinois State Water Survey September, 1984 I. INTRODUCTION Effective porosity is that portion of the total void space of a porous material that is capable of transmitting a fluid. Total porosity is the ratio of the total void volume to the total bulk volume. Porosity ratios traditionally are multiplied by 100 and expressed as a percent. Effective porosity occurs because a fluid in a saturated porous media will not flow through all voids, but only through the voids which are inter• connected. Unconnected pores are often called dead-end pores. Particle size, shape, and packing arrangement are among the factors that determine the occurance of dead-end pores. In addition, some fluid contained in inter• connected pores is held in place by molecular and surface-tension forces. This "immobile" fluid volume also does not participate in fluid flow. Increased attention is being given to the effectiveness of fine grain materials as a retardant to flow. The calculation of travel time (t) of con• taminants through fine grain materials, considering advection only, requires knowledge of effective porosity (ne): (1) where x is the distance travelled, K is the hydraulic conductivity, and I is the hydraulic gradient. -
Anomalies in Resistivity Logs Caused by Borehole Environment
Anomalies in Resistivity Logs Caused by Borehole Environment Ko Ko Kyi, Retired Principal Petrophysicist Resistivity logs are critical input data for petrophysical evaluation as they are used for identification of possible hydrocarbon bearing intervals, as well as determination of water saturation in reservoirs of interest. Therefore, it is important to ensure that resistivity logs are properly acquired, using appropriate type of resistivity logging tools, suitable for the borehole environment, such as hole size, type of mud, mud salinity etc., in which these tools are deployed. Generally, resistivity logging tools are divided into two main types, namely induction tools and laterolog tools. Induction resistivity tools are used in non-conductive or fresh mud and the laterolog resistivity tools are used in conductive or high salinity muds. In addition to the drilling mud, hole size also has an effect on the resistivity logging tools. Wireline logging tools are generally 3 ½ to 4 inches in diameter and are not suitable for very big holes as the mud around the tool will have significant influence on the tool response. Even Logging While Drilling (LWD) tools have limitations on the size of the hole in which they can be deployed effectively. A very saline mud inside a large borehole can have serious effects on the response of an induction logging tool. Borehole size, as well as eccentricity of the LWD resistivity tool can have deleterious effects on resistivity logs. LWD resistivity tools work on similar principle as the wireline induction resistivity tool and therefore borehole size, high salinity mud, eccentricity can cause anomalous readings of the LWD resistivity tool. -
Negative Correlation Between Porosity and Hydraulic Conductivity in Sand-And-Gravel Aquifers at Cape Cod, Massachusetts, USA
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by DigitalCommons@University of Nebraska University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 2005 Negative correlation between porosity and hydraulic conductivity in sand-and-gravel aquifers at Cape Cod, Massachusetts, USA Roger H. Morin Denver Federal Center, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Morin, Roger H., "Negative correlation between porosity and hydraulic conductivity in sand-and-gravel aquifers at Cape Cod, Massachusetts, USA" (2005). USGS Staff -- Published Research. 358. https://digitalcommons.unl.edu/usgsstaffpub/358 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Journal of Hydrology 316 (2006) 43–52 www.elsevier.com/locate/jhydrol Negative correlation between porosity and hydraulic conductivity in sand-and-gravel aquifers at Cape Cod, Massachusetts, USA Roger H. Morin* United States Geological Survey, Denver, CO 80225, USA Received 3 March 2004; revised 8 April 2005; accepted 14 April 2005 Abstract Although it may be intuitive to think of the hydraulic conductivity K of unconsolidated, coarse-grained sediments as increasing monotonically with increasing porosity F, studies have documented a negative correlation between these two parameters under certain grain-size distributions and packing arrangements. This is confirmed at two sites on Cape Cod, Massachusetts, USA, where groundwater investigations were conducted in sand-and-gravel aquifers specifically to examine the interdependency of several aquifer properties using measurements from four geophysical well logs. -
46. Integration of Sfl and Ild Electrical Resistivity Logs During Leg 133: an Automatic Modeling Approach1
McKenzie, J.A., Davies, P.J., Palmer-Julson, A., et al, 1993 Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 133 46. INTEGRATION OF SFL AND ILD ELECTRICAL RESISTIVITY LOGS DURING LEG 133: AN AUTOMATIC MODELING APPROACH1 Peter D. Jackson2 and Richard D. Jarrard3 ABSTRACT An automatic technique is developed for integrating two electrical resistivity logs obtained during Leg 133, namely, the deep induction log (ILD) and the spherically focussed log (SFL). These logs are routinely run by the Ocean Drilling Program in lower resistivity sedimentary environments, where drilling through soft, poorly consolidated lithologies often results in variable hole diameters. Examples are given to show the superior resolution of the SFL, compared to the ILD, in lithologies encountered during Leg 133, but also the degradation of the SFL response caused by variable hole conditions. A forward modeling program is used to calculate the ILD response, and a corrective scheme is developed that uses the SFL log as the starting point of an "iterative-corrective" procedure that uses, in effect, the ILD log to correct the SFL log for degradation caused by changes in the diameter of the borehole. The calculated induction log (using the corrected SFL log as the input model) is shown to be near to the ILD measured downhole. The authors consider this to be proof that the corrected SFL is a better estimate of the formation resistivity downhole (Rt) than either the SFL or ILD taken alone. Corrections are shown to be substantial in poor hole conditions, and examples are given where geological cyclicity might be confused with hole effects if uncorrected logs were to be used. -
Determination of Soil Texture Soil Porosity Particle Surface Area
Determination of Soil Texture Soil Texture Class Diameter Dominant Minerals Sand (2.0 –0.05 mm) Quartz Silt (0.05 – 0.002 mm) Quartz /Feldspars/mica Clay (<0.002 mm) Secondary minerals Importance of Soil Texture (Distribution of particle sizes) Soil Porosity Particle Surface Area 1 Texture and Pore Sizes Large particles yield large pore spaces Small particles yield small pore spaces Water moves rapidly and is poorly retained in Coarse-textured sandy soils. Water moves slowly and is strongly retained in Fine-textured, clayey soils. Surface Area units Specific Surface Area = Surface Area cm2 mass g water nutrients Interface with the environment gasses O.M. microorganisms 60% sand, 10% silt, 30% clay 2 clay Sand <10% Loamy sand 10 – 15% Sandy loam 15 – 20% Sandy clay loam 20 – 35% Florida Soils Sandy clay 35 – 55% Clay > 50% Texture by Feel Sand = Gritty Silt = Smooth Clay = Sticky, Plastic Soil Horizons Textural Class Clay Content Surface Area Potential Reactivity 3 Laboratory Analysis of Soil Texture Laboratory Analysis Sedimentation – Sand, Silt, and Clay Fraction drag drag gravity Sedimentation Sand SandSilt ClaySilt Clay silt sand 4 Quantifying Sedimentation Rates Stokes’ Law g (dp-d ) D2 Velocity V(cm/s) = L 18ų g = gravity V =K D2 dp = density of the particle K = 11,241 cm-1 sec-1 dL = density of the liquid ų = viscosity of the liquid Stokes’ Law V = K D2 K = 11,241 cm-1 sec-1 Sand: D = 1 mm 0.1 cm V = 11,241 x (0.1)2 1 2 cm ·sec X cm = 112.4 cm/sec 5 Stokes’ Law V = K D2 K = 11,241 cm-1 sec-1 clay: D = 0.002 mm 0.0002 cm V = 11,241 x (0.0002)2 1 2 cm ·sec X cm = 0.00045 cm/sec 500 450 400 350 300 sand 250 silt 200 clay 150 100 Settling Velocity (cm/sec) Velocity Settling 50 0 0 0.5 1 1.5 2 2.5 Particle Diameter (mm) Sedimentation The density of a soil suspension decreases as particles settle out. -
A New Logging-While-Drilling Method for Resistivity Measurement
sensors Article A New Logging-While-Drilling Method for y Resistivity Measurement in Oil-Based Mud Yongkang Wu 1, Baoping Lu 2, Wei Zhang 2,3, Yandan Jiang 1, Baoliang Wang 1,* and Zhiyao Huang 1 1 State Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhejiang University, Hangzhou 310027, China; [email protected] (Y.W.); [email protected] (Y.J.); [email protected] (Z.H.) 2 Sinopec Research Institute of Petroleum Engineering, Beijing 100101, China; [email protected] (B.L.); [email protected] (W.Z.) 3 State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100101, China * Correspondence: [email protected] This paper is an extended version of an earlier conference paper: “Wu, Y.K.; Ni, W.N.; Li, X.; Zhang, W.; y Wang, B.L.; Jiang, Y.D. and Huang, Z.Y. Research on characteristics of a new oil-based logging-while-drilling instrument. In Proceedings of the 11th International Symposium on Measurement Techniques for Multiphase Flow, Zhenjiang, China, 3–7 November 2019.” Received: 21 December 2019; Accepted: 11 February 2020; Published: 16 February 2020 Abstract: Resistivity logging is an important technique for identifying and estimating reservoirs. Oil-based mud (OBM) can improve drilling efficiency and decrease operation risks, and has been widely used in the well logging field. However, the non-conductive OBM makes the traditional logging-while-drilling (LWD) method with low frequency ineffective. In this work, a new oil-based LWD method is proposed by combining the capacitively coupled contactless conductivity detection (C4D) technique and the inductive coupling principle. -
Experimental Drill Hole Logging in Potash Deposits Op the Cablsbad District, Hew Mexico
EXPERIMENTAL DRILL HOLE LOGGING IN POTASH DEPOSITS OP THE CABLSBAD DISTRICT, HEW MEXICO By C. L. Jones, C. G. Bovles, and K. G. Bell U. S. GEOLOGICAL SURVEY This report is preliminary and has not been edited or Released to open, files reviewed for conformity to Geological Survey standards or nomenclature. COHTEUTS Page Abstract i Introduction y 2 Geology . .. .. .....-*. k Equipment 7 Drill hole data . - ...... .... ..-. - 8 Supplementary tests 10 Gamma-ray logs -T 11 Grade and thidmess estimates from gamma-ray logs Ik Neutron logs 15 Electrical resistivity logs 18 Literature cited . ........... ........ 21 ILLUSTRATIONS Figure 1. Generalized columnar section and radioactivity log of potassium-bearing rocks 2. Abridged gamma-ray logs recorded by commercial All companies and the U. S. Geological Survey figures 3« Lithologic, gamma-ray, neutron, and electrical resistivity logs ................. are in k. Abridged gamma-ray and graphic logs of a potash envelope deposit at end of 5« Lithologic interpretations derived from gamma-ray and electrical resistivity logs - ...... report. TABLE Table 1. Summary of drill hole data 9 EXPERIMENTAL DRILL HOLE LOGGING Iff POTASH DEPOSITS OP THE CARISBAD DISTRICT, HEW MEXICO By C. L. Jones, C. G. Bowles, and K. G>. Bell ABSTRACT Experimental logging of holes drilled through potash deposits in the Carlsbad district, southeastern Hew Mexico, demonstrate the consider able utility of gamma-ray, neutron, and electrical resistivity logging in the search for and identification of mineable deposits of sylvite and langbeinite. Such deposits are strongly radioactive with both gamma-ray and neutron well logging. Their radioactivity serves to distinguish them from clay stone, sandstone, and polyhalite beds and from potash deposits containing carnallite, leonite, and kainite. -
Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation
PNNL-19867 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation LJ Bond RV Harris KM Denslow TL Moran JW Griffin DM Sheen GE Dale T Schenkel November 2010 PNNL-19867 Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation LJ Bond RV Harris KM Denslow TL Moran JW Griffin DM Sheen GE Dale(a) T Schenkel(b) November 2010 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830 Pacific Northwest National Laboratory Richland, Washington 99352 ___________________ (a) Los Alamos National Laboratory Los Alamos, New Mexico 87545 (b) Lawrence Berkeley National Laboratory Berkeley, California 94720 Abstract Sealed, chemical isotope radiation sources have a diverse range of industrial applications. There is concern that such sources currently used in the gas/oil well logging industry (e.g., americium-beryllium [AmBe], 252Cf, 60Co, and 137Cs) can potentially be diverted and used in dirty bombs. Recent actions by the U.S. Department of Energy (DOE) have reduced the availability of these sources in the United States. Alternatives, both radiological and non-radiological methods, are actively being sought within the oil- field services community. The use of isotopic sources can potentially be further reduced, and source use reduction made more acceptable to the user community, if suitable non-nuclear or non-isotope–based well logging techniques can be developed. Data acquired with these non-nuclear techniques must be demonstrated to correlate with that acquired using isotope sources and historic records. To enable isotopic source reduction there is a need to assess technologies to determine (i) if it is technically feasible to replace isotopic sources with alternate sensing technologies and (ii) to provide independent technical data to guide DOE (and the Nuclear Regulatory Commission [NRC]) on issues relating to replacement and/or reduction of radioactive sources used in well logging.