Experimental Quantification of "Good Log Characteristics" for Mesaverde Reservoirs of the Piceance Basin, Colorado: Toward a Reconnaissance Method for Evaluating Movable Water in Tight Shaly Sandstones, #41468 (2014).

Paul E. Devine

Search and Discovery.com

... parameters: apparent water resistivity (RWA) and crossover or approach of density and neutron porosities (DNXO). For both of these quantities, the addition...

Unravelling the 'Sweet Spot' Potential of Fractured Basement in Ketaling High, South Sumatra Basin by Integrating Complex Seismic Attribute and Resistivity Log Evaluation

Rady Adiarsa, Yona Akbar, Hendra Baskara, Adi Widiyantoro, Ibnu Suhartanto

Indonesian Petroleum Association

... log resistivity by Rasmus, 1982. In K-1 wells, using the density neutron porosity log does not indicate any fracture occurs and no ‘casual’ crossover...

Chapter 3: Depositional Facies and Petrophysical Analysis of the Bakken Formation, Parshall Field and Surrounding Area, Mountrail County, North Dakota

Andrea L. Simenson, Stephen A. Sonnenberg, Robert M. Cluff

Rocky Mountain Association of Geologists

... gamma ray, density-neutron porosity, sonic, and/or resistivity raster logs. Of these, 135 wells were selected for well log analysis based...

Horseshoe Bend: T. 6-7 S., R. 21-22 E., SLB&M: Uintah County, Utah

Dennis G. Storhaug

Utah Geological Association

... acres; Green River-6,400 acres Completion Practice: Perforate, acidize Logging Practice: Dual Induction GR, Density - Neutron Number of Producing Wells...

Influence of Shales on Steamflood Response as Interpreted from Gas Saturation History, Kern River Field, California, by Steven J. Sanford and John M. Merrell; #91024 (1989)

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High Resolution Sequence Stratigraphy of "Volcanoclastics" Air Benakat Formation, South Sumatera

Warto Utomo, Armein Suleiman, Andang Bachtiar, Budi Satrio, Agatha I. Kartiyanta

Indonesian Petroleum Association

...-logs evaluation of resistivity, density (RHOB) and neutron (NPHI) analyses since the gamma-ray log showed the inconsistency features and brought...

Identification of Distribution Sandstone Reservoir Zone and Hydrocarbon Fluid Using Extended Elastic Impedance (EEI) in Talang Akar Formation at Azzura Field, North West Java Basin

Annisa Dian Afsary, Adi Susilo, Bayu Dwijatmiko, Agung Dwi Alfianto

Indonesian Petroleum Association

..., neutron, multimin, porosity and acoustic impedance. (b) Gamma Ray and Lambda-Rho crossplots which show the cut-off value in distinguishing lithology...

JMM, South (Cook Sand) Field Nolan County, Texas

Allan D. Frizzell, Lane P. Frizzell

Abilene Geological Society

...-Electrical/Micro-Electrical (T.D. to base of surface pipe) Compensated Density-Neutron (T.D. to 4500′) Repeat Formation Tester (to determine BHP in Net...

Active Geosteering Strategies in Structurally Complex Niobrara Unconventional Reservoirs, #80476 (2015).

Mark Odegard, John Daniels, James Huck, John Forster

Search and Discovery.com

... WITH OUR WELLSITE GEOLOGISTS Presenter’s notes: Reservoir Characterization • Typelog showing • Gamma Ray • Deep Resistivity • Density Neutron...

The Hunt for Acquisition and Drilling Prospect Leads, by Mike Cherry, #40122 (2004).

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Formation evaluation challenges in the Amadeus Basin - lessons learnt from the Surprise-1 REH Discovery Well

Djisan Kho, Timothy Hopper, Sathees Krishnan, Greg Ambrose

Petroleum Exploration Society of Australia (PESA)

... was developed to calculate lithology, porosity, and grain density. The openhole logs and neutron induced gamma ray spectroscopy data were used as the input...

Formation Evaluation in Deltaic Sand Deposits: The Effect of Lignite Debris on Logs, Integration of Sand-Body Analysis

Mario Petricola, Jumardi, K. Saito

Indonesian Petroleum Association

... on the logs is clear when the proportion of detrital coal in the sand increases; the density and gamma ray are lowered, the neutron porosity...

Improved Decision Making Through Optimized Data Acquisition Program in Deepwater Exploration Drilling - A Case Study from East Kalimantan

Graziano Capone, Lilik Budi Riyanto, Cikko Majesta, Ali Shahbazi Fakhr, Hengky Ng, Yevgeniy Karpekin

Indonesian Petroleum Association

...-combo log was acquired by LWD because comparison of basic neutron porosity, density and resistivity logs recorded in the first well by both acquisition...

"Sweet Spot" Identification and Optimization in Unconventional Reservoirs, #80644 (2018).

Jeffrey B. Aldrich, John P. Seidle

Search and Discovery.com

... "Sweet Spots" Using Density and Neutron Logs: Implications for Qualitative and Quantitative Assessment of Gas-Shale Resources. American Association...

Automating Petrophysics and Decline Curves Analysis for Performance Prediction at the Basin -Scale: Application to the Powder River Basin

Cameron Snow, Roland Gunther

Unconventional Resources Technology Conference (URTEC)

..., and the total porosity. The mineral composition options used for each zone is given in Table 2. For the inversion, input curves comprised the density, neutron...

The Red River "B" Zone at Cedar Hills Field, Bowman County, North Dakota

WARD A. WHITEMAN, MICHAEL R. BOX, DANA L. CRANEY

Williston Basin Symposium

... and compensated density-neutron logs of the cored wells described in this paper. Line of section is shown in Figure 2...

Core and Wireline Log Based, Shelf to Basin Stratigraphic Framework of Mississippian Strata, East-Central Oklahoma

Ethan Hill

Oklahoma City Geological Society

... potential, shallow medium and deep resistivity, density porosity, neutron porosity, and P.E. for the two cored wells as well as a data set of additional...

BDA-1 Well: Fractured Basement Play Discovery in the Southern Part of South Sumatra Basin

Bayu Sapta Fitriana, Mohamad Fery Mustofa, Hermawan Joko Sutrisno

Indonesian Petroleum Association

... and neutron log data, indicates a porosity of 1-20% in basement interval (Figure 9). This porosity is concentrated in the fracture zones which were...

Geologic Model of a Highly Compartmentalized Reservoir: The Devonian Thirtyone Formation, University Block 9 Field

Steve Weiner, Jeff Heyer

West Texas Geological Society

... was the inability to accurately identify porosity and fractures from the original suite of sonic and neutron logs. Poor predictions about the amount...

East Cameron Block 270, Offshore Louisiana: A Pleistocene Field

D. S. Holland , Clarke E. Sutley , R. E. Berlitz , J. A. Gilreath

AAPG Special Volumes

.... Resistivity, density, and neutron logs were run on all wells except where prevented by hole conditions. Dipmeter and sonic logs were run on selected wells...

ABSTRACT: A New Approach for Interpreting Lithofacies and Sequence Stratigraphy using Borehole Image Data in Wells Drilled with Non-Conductive Mud Systems; #90013 (2003)

MITCH D. PAVLOVIC, MILAN MARKOVIC

Search and Discovery.com

... with the aid of gamma ray, density, neutron porosity, sonic, and resistivity logs. Where core calibration was possible, a series of log cutoffs were identified...

Gooseneck Field, Northern Williston Basin

Andrew C. Weinzapfel, Douglas G. Neese

Wyoming Geological Association

.... The crossover is due to thermal neutron absorption by chlorine, which produces a very low neutron porosity response relative to density porosity. Within...

Formation Evaluation Lessons Learned from Banyu Urip Field, Cepu Block

Irena Andisa Maura, Scott Wertanen

Indonesian Petroleum Association

... porosity numbers have higher uncertainty than open hole Neutron – Density logs. Lost circulation is the biggest operational challenge when drilling...

Locating Sweet Spots: Shale Petroleum Systems

Rasoul Sorkhabi

GEO ExPro Magazine

... can both stay in place and migrate log measurements such as bulk density, neutron porosity, and within the formation. Intra-formational migration...

Kelly-Snyder (Cisco-Canyon) Fields/SACROC Unit

Michael Raines

West Texas Geological Society

... between CGR and GR is shaded. Porosity curves are shown on the right tract and include Neutron (Porosity), Sonic (SPhi), and Density (DPhi) curves...