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Keywords: borehole fluid
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Proceedings Papers

Paper presented at the SPWLA 58th Annual Logging Symposium, June 17–21, 2017
Paper Number: SPWLA-2017-JJJJ
... borehole fluid can make the log interpretation very challenging. To overcome these challenges, a moderation sleeve has been designed to deploy with the MDPN instrumentation. The sleeve material substitutes the fluid in the borehole and increases the tool sensitivity to formation fluids. This simple...
Proceedings Papers

Paper presented at the SPWLA 57th Annual Logging Symposium, June 25–29, 2016
Paper Number: SPWLA-2016-MMM
... applications where pressures can reach up to 35,000 psi. Ultrasonic technology has been used for many years for well integrity assurance, but it has been limited to 14- to 16-ppg borehole fluid and 0.2- to 0.75-in. casing thicknesses. The challenge was to overcome highly attenuative borehole fluid as well...
Proceedings Papers

Paper presented at the SPWLA 53rd Annual Logging Symposium, June 16–20, 2012
Paper Number: SPWLA-2012-119
... measurements to measure invasion effects, because the apparatus used to separate the different borehole fluids will greatly distort the measurements. In addition, so many data points are required that the task would become monumental. The computer program MCNP was used to model two logging-while-drilling...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-42298
... information, it is possible to run Monte Carlo numerical models of the system and predict minimum and maximum expected measurement values. The models use the MCNP code and include full geometrical descriptions of tool and completion geometry, borehole fluids, formation minerals and fluids. Model results have...
Proceedings Papers

Paper presented at the SPWLA 46th Annual Logging Symposium, June 26–29, 2005
Paper Number: SPWLA-2005-RR
... of 4 ½-in.. to 12 ¼-in.. Borehole fluids of fresh, 100kppm saltwater, and oil were used. Test formations included sandstone, dolostone, and limestone with freshwater, oil, and 100 kppm saltwater saturating the pore space. Generally, the sensitivity of the C/O response to formations containing oil...
Proceedings Papers

Paper presented at the SPWLA 42nd Annual Logging Symposium, June 17–20, 2001
Paper Number: SPWLA-2001-GG
... ABSTRACT Much knowledge has been acquired in the past years on how the conventional coaxial induction tool responds to borehole fluid, tool eccentricity, mud infiltration, and drilling-induced fractures. The behavior of a multicomponent induction tool in such environments has not been studied...
Proceedings Papers

Paper presented at the SPWLA 34th Annual Logging Symposium, June 13–16, 1993
Paper Number: SPWLA-1993-LL
... of the borehole fluid oil holdup is needed. This can be done by running production logging sensors such as a Gradiomanometer simultaneously with the C/O tool. Interpretation of the C/O measurements is done with the aid of a large data base of laboratory measurements, which contains a comprehensive spectrum...
Proceedings Papers

Paper presented at the SPWLA 32nd Annual Logging Symposium, June 16–19, 1991
Paper Number: SPWLA-1991-OO
.... u.), whereas in the present tests a more representative porosity of 22.9 p. u. has been obtained. The tests have been performed with various borehole fluids, two formation fluid salinities and two thicknesses of cement. The results clearly show that none of the tools provide the true formation...
Proceedings Papers

Paper presented at the SPWLA 32nd Annual Logging Symposium, June 16–19, 1991
Paper Number: SPWLA-1991-MM
... to make the carbon/oxygen measurement under conditions formerly unsuitable for this measurement. The tool's smaller diameter makes measurements possible below tubing, and the use of dual gamma ray detectors allows compensation for the borehole fluid composition. This combination allows flowing wells...
Proceedings Papers

Paper presented at the SPWLA 31st Annual Logging Symposium, June 24–27, 1990
Paper Number: SPWLA-1990-Q
... functions to transform the Cl, values from long- and short-spaced detectors directly to Gin,. In their present form, the correction functions are specific to particular borehole/casing diameter combinations and require borehole fluid salinity as an input parameter. Corrections for gas-filled boreholes...
Proceedings Papers

Paper presented at the SPWLA 29th Annual Logging Symposium, June 5–8, 1988
Paper Number: SPWLA-1988-SS
... erroneously being attributed to formation decay neutron diffusion within the formation neutron communication between the borehole fluid and formation regions cement effects The last three of these factors, and the way they affect log measurements, are discussed in the paper. Also presented...
Proceedings Papers

Paper presented at the SPWLA 25th Annual Logging Symposium, June 10–13, 1984
Paper Number: SPWLA-1984-KKK
... log analysis borehole fluid Upstream Oil & Gas neutron burst borehole formation capture cross section oxygen activation pulsed neutron log Symposium well logging capture cross section tmd log background count rate detector activation count rate information short spaced...
Proceedings Papers

Paper presented at the SPWLA 24th Annual Logging Symposium, June 27–30, 1983
Paper Number: SPWLA-1983-UU
...SPWLA TWENTY-FOURTH ANNUAL LOGGING SYMPOSIUM, JUNE 27-30, 1983 THE SHOULDER BED EFFECT ON THE DUAL LATEROLOG AND ITS VARIATION WITH TEE RESISTIVITY OF THE BOREHOLE FLUID by R. Chemali, S. Gianzero, R. Strickland Gearhart Industries, Inc., Austin, Texas USA and S. M. Tijani, School of Mines, Paris...
Proceedings Papers

Paper presented at the SPWLA 24th Annual Logging Symposium, June 27–30, 1983
Paper Number: SPWLA-1983-DD
...) a significant number of counts from neutron capture within the,borehole fluid or the closely surrounding materials are observed in each gate, The last four gates are each progressively wider at longer delay times from the neutron burst. In gates progressively later than the burst, the percentage of counts from...
Proceedings Papers

Paper presented at the SPWLA 20th Annual Logging Symposium, June 3–6, 1979
Paper Number: SPWLA-1979-BB
...- sional model there is a ,single spatial parameter R, which is the distance into the matrix from the source or detector point. The geometry is spherical. In the spherical geometry the borehole fluid is modeled as a spherical shell sur- rounding the source point (for the source transport data base...

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