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Keywords: nmr porosity
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Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5012
... relaxation well logging pore july 29 log analysis pore structure pulse sequence spwla 61 rock type carbonate reservoir symposium june 24 permeability deficit nmr porosity porosity deficit nmr data pore size SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1 PORE STRUCTURE...
Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5065
... reservoir simulation upstream oil & gas density image june 24 case study spwla 61 nmr porosity reflector symposium doublet azimuthal density geothermal project july 29 slowness wellbore permeability SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1 DELINEATING THE...
Proceedings Papers

Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5013
... characterization well logging upstream oil & gas july 29 symposium nmr porosity log analysis drilling fluids and materials porosity spwla 61 relaxation time flushed zone enhanced recovery artificial intelligence information oil saturation density porosity burgan field formation damage...
Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-K
... diffusivity bulk diffusivity connate water well logging cutoff porosity Symposium methane subplot spwla 60 log analysis laboratory measurement correlation map hydrocarbon NMR porosity laboratory condition propane composition diffusion saturation decane SPWLA 60th Annual Logging...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-IIII
... studied the effects of changing TE (echo spacing) and TW (wait time) on T2 spectrum and NMR porosity in order to accurately describe the pore structure of a coal reservoir. We found that TE should be less than 0.2ms and TW should be greater than 6s. Because the coal is very brittle, it is difficult to...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-F
..., 2008). well logging core plug porosity spwla 59 Upstream Oil & Gas plug porosity porosity log analysis halite CT scan core plug reservoir histogram NMR porosity University core analysis resolution Symposium correlation plug CT number pore space core ct scan SPWLA...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-SSSS
... sequence well logging NMR Tool real time resolution porosity vertical resolution lateral motion Symposium Schlumberger LWD NMR tool Drilling requirement fault block acquisition NMR porosity SPWLA 59th Annual Logging Symposium, June 2-6, 2018 1 NEXT GENERATION LWD NMR FOR SLIM HOLES N...
Proceedings Papers

Paper presented at the SPWLA 59th Annual Logging Symposium, June 2–6, 2018
Paper Number: SPWLA-2018-II
.... well logging total porosity water saturation curve spwla 59 Upstream Oil & Gas water saturation rig time data acquisition water cutoff 3msec Symposium histogram saturation log analysis standard resistivity porosity Drilling NMR porosity water cutoff 33msec sequence acquisition...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-CCC
... 0.114 ms to evaluate benchtop NMR responses. Significant differences are observed between the NMR measurements at different echo spacings. The NMR porosity increases by a maximum of a factor of 4 as the echo spacing decreases. We observed that the total moveable water content could be measured only at...
Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-KKKK
... true formation porosity and hydrocarbon saturation exclusively from NMR data in gas-bearing formations. The hydrogen index (HI) of gas is much smaller than one and causes an underestimation of the measured NMR porosity. Unless temperature, pressure, hydrocarbon composition and saturation are known...
Proceedings Papers

Paper presented at the SPWLA 56th Annual Logging Symposium, July 18–22, 2015
Paper Number: SPWLA-2015-NN
... Upstream Oil & Gas particle size formation porosity correction log analysis injection pressure solid invasion psi injection pressure core sample invasion porosity reduction NMR porosity permeability well logging particle spwla 56 Symposium spectra Bentheimer SPWLA 56th Annual...
Proceedings Papers

Paper presented at the SPWLA 55th Annual Logging Symposium, May 18–22, 2014
Paper Number: SPWLA-2014-X
... size distribution pore relaxation Symposium pore space pore throat radius pore throat SEM image Reservoir Characterization NMR measurement spwla 55 plug saturation permeability porosity wolfcamp rock correction NMR porosity pore size SPWLA 55th Annual Logging Symposium, May 18-22...
Proceedings Papers

Paper presented at the SPWLA 55th Annual Logging Symposium, May 18–22, 2014
Paper Number: SPWLA-2014-SSSS
... transverse relaxation times (T 2 ) that characterize bitumen-rich zones results in lower T 2 logarithmic mean time values, and yields lower NMR porosity estimates than porosity estimates from the density and neutron tools in those zones. To confirm the presence of bitumen in some wells using laboratory low...
Proceedings Papers

Paper presented at the SPWLA 54th Annual Logging Symposium, June 22–26, 2013
Paper Number: SPWLA-2013-I
... determining fluid saturations to within 5 saturation units. Examples of NMR logs acquired with this new operating procedure are compared with high resolution dielectric logs. These include the evaluation of heavy oil in a thinly laminated clastic sequence from the comparison of the total NMR porosity with...
Proceedings Papers

Paper presented at the SPWLA 49th Annual Logging Symposium, May 25–28, 2008
Paper Number: SPWLA-2008-JJ
... model NMR porosity Upstream Oil & Gas porosity variable exponent clay line thinly bedded reservoir sandstone permeability model spwla 49th log analysis total porosity gas porosity Symposium permeability integration thomas-stieber plot SPWLA 49th Annual Logging Symposium, May 25-28...
Proceedings Papers

Paper presented at the SPWLA 46th Annual Logging Symposium, June 26–29, 2005
Paper Number: SPWLA-2005-D
... slower component the remaining hydrocarbon. The T1 distributions are uni-modal in the water-flooded Tor formation, in response to the lower hydrocarbon saturations. In addition to hydrocarbon typing, the NMR logs can greatly reduce the uncertainty in total porosity. Apparent density and NMR porosities...
Proceedings Papers

Paper presented at the SPWLA 43rd Annual Logging Symposium, June 2–5, 2002
Paper Number: SPWLA-2002-BB
... transit time, and NMR total porosity as saturation indices. Among them, resistivity derived saturation was found to show best consistency with hydrate concentration estimated from chlorinity anomaly of the pore fluid in core samples. NMR porosity, which was measured first among worldwide hydrate research...
Proceedings Papers

Paper presented at the SPWLA 41st Annual Logging Symposium, June 4–7, 2000
Paper Number: SPWLA-2000-Y
... relatively high borehole signal levels, and lead to guidelines for proper application of the correction. borehole signal porosity Symposium spectra well logging log data amplitude NMR data NMR porosity Upstream Oil & Gas shale section mphe correction formation signal contamination...
Proceedings Papers

Paper presented at the SPWLA 40th Annual Logging Symposium, May 30–June 3, 1999
Paper Number: SPWLA-1999-EE
... ABSTRACT Two field examples are presented of NMR logs in sandstone reservoirs with high porosity and permeability. The NMR logs show a total of 160 meters of anomalous porosity and T2 distribution response, when compared to conventional logs and formation test results. The NMR porosity is...
Proceedings Papers

Paper presented at the SPWLA 38th Annual Logging Symposium, June 15–18, 1997
Paper Number: SPWLA-1997-YY
... calcu- lated from the NMR porosity and either the mean T2 or the free fluid volume. With fast NMR logging, porosity is taken from another log, typically the density log in shaly sands, or the density-neutron crossplot in gas and car- bonates. Free fluid is taken from the difference of poros- ity and...

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