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Formation resistivity determination

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Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition and Conference, November 9–12, 2015
Paper Number: SPE-177965-MS
... formation resistivity average phase resistivity measurement resistivity tool well logging receiver inversion antenna orientation horn effect phase resistivity measurement boundary formation resistivity true formation resistivity determination Figure 2 An example of LWD resistivity...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, March 6–9, 2017
Paper Number: SPE-183953-MS
.... To determine a true Rt from the logging-while-drilling (LWD) resistivity measurements, a general full inversion is usually time-consuming and needs some inputs on formation model. This paper presents an alternative approach to derive the true Rt without input of any prior information. The alternative approach...
Proceedings Papers

Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-JJJJ
... Computer Vision detection application feature map resistivity SPWLA 60th Annual Logging Symposium, June 15-19, 2019 DOI: 10.30632/T60ALS-2019_JJJJ 1 AUTOMATED RESISTIVITY INVERSION AND FORMATION GEOMETRY DETERMINATION IN HIGH-ANGLE AND HORIZONTAL WELLS USING DEEP LEARNING TECHNIQUES Hu Li, Maxwell...
Proceedings Papers

Paper presented at the SPWLA 39th Annual Logging Symposium, May 26–28, 1998
Paper Number: SPWLA-1998-E
.... The use of a multiple spacing, multiple frequency propagation resistivity tool enables the calculation of multiple independent sets of vertical and horizontal resistivities. In addition to identifying and quantifying anisotropy, this also helps to determine additional borehole and formation effects...
Proceedings Papers

Paper presented at the Permian Basin Oil and Gas Recovery Conference, March 13–15, 1986
Paper Number: SPE-15030-MS
... SPE Members Abstract A new method is presented to determine formation water resistivity (R w) in sandstones. This procedure does not use the Spontaneous Potential (SP) log. Instead formation R w is Potential (SP) log. Instead formation R w is obtained from the overlying shale zones...
Proceedings Papers

Paper presented at the SPWLA 22nd Annual Logging Symposium, June 23–26, 1981
Paper Number: SPWLA-1981-G
... ABSTRACT Formation water resistivity (Rw) is an important interpretation parameter. When water samples are available, Rw is determined by direct measurement or calculated from the water chemical analysis. It is more practical, however, to estimate Rw from the SP log. Poor correlations between...
Proceedings Papers

Paper presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, October 7–8, 1962
Paper Number: SPE-437-MS
... formation temperature SP coefficient spontaneous potential curve well logging correlation investigation Upstream Oil & Gas mud filtrate brine solution core plug determination log analysis water resistivity coefficient apparatus Formation Resistivity Factor Formation Water...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191476-MS
... Abstract We introduce a new core analysis workflow for determining Resistivity Index (RI), Formation Factor (FF), and other petrophysical properties, directly from an "as-received" (AR) set of core samples. Unlike common practices that require lengthy core cleaning and wettability restoration...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0006
... Summary We examined the response of directional resistivity tools with tilted antennas to a VTI anisotropic formation. A new method is proposed to determine the VTI anisotropic resistivity (with the horizontal resistivity and the vertical resistivity) and the formation dip using...
Journal Articles
SPE Res Eval & Eng 13 (04): 667–678.
Paper Number: SPE-116123-PA
Published: 12 August 2010
...S.. Fang; A.. Merchant; E.. Hart; A.. Kirkwood Summary With the use of both azimuthal-propagation-resistivity (APR) and main- and cross-component data, the resistivity anisotropy and its dip and azimuth angles of a massive formation (anisotropic shale or laminated sand) can be determined...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-34221
... The determination of true formation resistivity in high angle and horizontal wells is complicated by the presence of shoulder bed effects, invasion, and anisotropy in the hydrocarbon bearing intervals and the effects of eccentering, drilling induced fractures and dielectric effects in the shales...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–24, 2008
Paper Number: SPE-116123-MS
... Abstract With the use of both azimuthal propagation resistivity main and cross component data, the resistivity anisotropy and its dip and azimuth angles of a massive formation (anisotropic shale or laminated sand) can be determined. The accuracy of the determined parameters depends...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–27, 2006
Paper Number: SPE-103113-MS
... standard induction log coupling relative dip multiarray triaxial induction tool Induction log inversion Formation Resistivity anisotropy SPE103113 SPE 103113 Determining Anisotropic Formation Resistivity at Any Relative Dip Using a Multiarray Triaxial Induction Tool H. Wang, SPE, T. Barber, SPE...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–29, 2004
Paper Number: SPE-90526-MS
... is in field test, and invasion interpretation algorithms are under development. A fast analytic algorithm corrects shoulder effect on all nine triaxial couplings of each array, allowing R v and the horizontal resistivity R h to be determined at several radial depths in the formation. Rigorous 2D and 3D...
Proceedings Papers

Paper presented at the 2003 SEG Annual Meeting, October 26–31, 2003
Paper Number: SEG-2003-0514
... Summary In this paper, we present a fast and rigorous inversion method to determine formation resistivity anisotropy, formation bed boundary location and relative dip and azimuth angles from a recently developed triaxial induction tool. This tool is fully triaxial and has sets of three...
Proceedings Papers

Paper presented at the SPWLA 37th Annual Logging Symposium, June 16–19, 1996
Paper Number: SPWLA-1996-Q
... is the only resistivity that is measured in vertical holes. We propose a new method in which the horizontal resistivity is determined in deviated boreholes or in dipping formations through the use of induction-type resistivity measurements. The advantage of the new method is that it requires no knowledge...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 8–11, 1989
Paper Number: SPE-19563-MS
... these intervals. This method addresses the effect of changing salinities and log runs and enables one to accurately determine formation pore pressures from shale resistivity and conductivity trends. The technique has been utilized on hundreds of wells throughout the Gulf of Mexico with great success. Typically...
Journal Articles
J Pet Technol 18 (03): 373–376.
Paper Number: SPE-1337-PA
Published: 01 March 1966
... Tulsa Research Center to calculate equivalent sodium chloride concentration from the chemical analysis of formation water samples. FUNDAMENTAL CONSIDERATIONS The resistivity of a solution, or its reciprocal the conductivity, at a given temperature is determined by the charge, concentration and mobility...
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 30–October 2, 2013
Paper Number: SPE-167622-STU
... the productive J 1   1 formation was characterized by anomaly low resistivity (Rt<5 Ohm*m) was determined. Then the concentration of conductive minerals was applied using Ezhova A.S.chart. For the purpose of exact estimation of Rt the conductivity that was not registrated by induction tool...

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