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Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-IIII
... ABSTRACT Coalbed methane reservoirs typically has a special and complex pore-fracture network. It contains both pores (mostly nano-pores) and fractures. The pore structure of coal reservoirs has an important influence on gas storage and gas production capacity. The traditional experimental...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-KKK
...SPWLA 58th Annual Logging Symposium, June 17-21, 2017 1 AN INTEGRATED GEOMECHANICAL APPROACH FOR SUCCESSFUL DRILLING THROUGH COAL IN PENINSULAR MALAYSIA AND OFFSHORE VIETNAM Avirup Chatterjee, Amitava Ghosh, Namsu Park, Sanjeev Bordoloi, Baker Hughes; Copyright 2017, held jointly by the Society...
Proceedings Papers

Paper presented at the SPWLA 52nd Annual Logging Symposium, May 14–18, 2011
Paper Number: SPWLA-2011-N
...SPWLA 52nd Annual Logging Symposium, May 14-19, 2011 COAL PETROPHYSICAL PROPERTIES FOR REALISTIC COAL GAS RESERVOIR MODELLING Stefan Calvert, Ian Percy, Tim Pritchard, Neal Morgan, Jordan Graham, Mohammed Al-Ojeh, QGC-BG Group PLC, Jess Maddren, EarthData Pty Ltd, and Peter Crosdale, Energy...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-R
... well logging log analysis Upstream Oil & Gas application well Artificial Intelligence coal porosity prediction Symposium coefficient neutron porosity input measurement machine learning neural network training well inelastic ratio capture ratio correlation coefficient...
Proceedings Papers

Paper presented at the SPWLA 29th Annual Logging Symposium, June 5–8, 1988
Paper Number: SPWLA-1988-FF
.... These litho-facies were regrouped into four facies groups: sand, silt, mud/shale and coal. Both raw well logs and computed variables including porosity, shale volume and log-defined clusters were used to create the discrimination models. The results from the facies group discrimination models were compared...
Proceedings Papers

Paper presented at the SPWLA 26th Annual Logging Symposium, June 17–20, 1985
Paper Number: SPWLA-1985-MMM
...-l/2, MWX-2/3 and MWX-3/l, respectively. Channel waves propagate through the MWX coals. Evidence suggests that tube waves launched in the transmitter well give rise, under appropriate conditions, to channel waves, which in turn excite tube waves in nearby wells that penetrate the same channel...
Proceedings Papers

Paper presented at the SPWLA 25th Annual Logging Symposium, June 10–13, 1984
Paper Number: SPWLA-1984-III
... ABSTRACT Pyrite is a major sulphur carrier in coal. For coal-mine planning, information at an early stage on the amount and distribution of sulphur in coal is very important. To date, sulphur is measured on core samples. As pyrite can show a strong Induced Polarisation (IP) effect, wireline...
Proceedings Papers

Paper presented at the SPWLA 24th Annual Logging Symposium, June 27–30, 1983
Paper Number: SPWLA-1983-KK
... ABSTRACT Well logs sampled digitally at closely-spaced intervals can help define coal quality parameters (ash, combustibles, and moisture) in coals in the western United States. Techniques of estimating ash content from geophysical well logs include cross plots of core sample measurements...
Proceedings Papers

Paper presented at the SPWLA 22nd Annual Logging Symposium, June 23–26, 1981
Paper Number: SPWLA-1981-ZZ
... and the use of well logging during the exploration and productions of hydrocarbons, geothermic, coal and water will be presented. Mexico is now a country that has a prominent place in the petroleum world ambit. It's reserves are up-to-date of 67,000x106 barrels and actual production is 2,550.000 barrels per...
Proceedings Papers

Paper presented at the SPWLA 22nd Annual Logging Symposium, June 23–26, 1981
Paper Number: SPWLA-1981-KK
... ABSTRACT This paper is a review of log evaluation techniques for coal exploration as applied by Shell Companies operating in various parts of the world. The new generation of logging tools is described in brief and various examples of qualitative and quantitative log interpretation...
Proceedings Papers

Paper presented at the SPWLA 18th Annual Logging Symposium, June 5–8, 1977
Paper Number: SPWLA-1977-X
... mechanics magnetic susceptibility log quantitative formation evaluation coal Spwla Eighteenth exploration data consultant test pit inch OD exploration slim hole tool slim hole Upstream Oil & Gas correlation formation evaluation Symposium deposit SPWLA EIGHTEENTH ANNUAL LOGGING...
Proceedings Papers

Paper presented at the SPWLA 17th Annual Logging Symposium, June 9–12, 1976
Paper Number: SPWLA-1976-KK
.... resolution uranium well logging high resolution tar sand Upstream Oil & Gas coal slimline system requirement standard unit Houston caliper log analysis Spwla Seventeenth calibrator application Mineral Exploration coal seam Symposium sonde SPWLA SEVENTEENTH ANNUAL LOGGING SYMPOSIUM...
Proceedings Papers

Paper presented at the SPWLA 17th Annual Logging Symposium, June 9–12, 1976
Paper Number: SPWLA-1976-S
... ABSTRACT In 1973 a major programme of coal exploration was initiated by Shell Companies operating in various parts of the world. While it was recognized that Coal Petrophysics was still a fairly new and inexact science, a policy decision was made at the outset to log every bore hole...
Proceedings Papers

Paper presented at the SPWLA 17th Annual Logging Symposium, June 9–12, 1976
Paper Number: SPWLA-1976-K
... ABSTRACT In coal exploration a drilling program is normally used for coal inquest through core analysis, with a high cost and operating time. However, in many cases, there is poor cores recovery due to operating procedures and/or Formation conditions which leads to the determination...
Proceedings Papers

Paper presented at the SPWLA 16th Annual Logging Symposium, June 4–7, 1975
Paper Number: SPWLA-1975-EE
... ABSTRACT The objective of this work was to determine permeability behavior of coal fracture systems as a function of applied stress. This seemed important in connection with the problem of flow of methane gas through coal seams into mine workings. Efforts to counteract the possible...
Proceedings Papers

Paper presented at the SPWLA 10th Annual Logging Symposium, May 25–28, 1969
Paper Number: SPWLA-1969-C
... of interlayers and beds of coals which are known to be oil bearing in one field. The laboratory derived F-? and I-Sw relationships have proved their worth in formation evaluation. Measured values of the saturation exponent have been found to be as low as unity for formations which produce at resistivity indices...
Proceedings Papers

Paper presented at the SPWLA 10th Annual Logging Symposium, May 25–28, 1969
Paper Number: SPWLA-1969-L
..., based on theoretical and empirical considerations, are developed for qualitative as well as for quantitative estimations of coal seams. Five groups of problems, which are essential to the mining engineer, are investigated: Localization of coal in the drilled section. Determination of the thickness...
Proceedings Papers

Paper presented at the SPWLA 8th Annual Logging Symposium, June 12–14, 1967
Paper Number: SPWLA-1967-R
..., and pronounced bole enlargement. Gamma ray logs provide important information in the location, identification, and evaluation of potash mineral deposits. Neutron, sonic, and density logs, in various combinations, augment the gamma ray data in such studies. Coal beds are characterized by high resistivities...

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