SPWLA 60th Annual Logging Symposium Transactions最新文献

{"title":"INVERSION OF HIGH-RESOLUTION HIGH-QUALITY SONIC COMPRESSIONAL AND SHEAR LOGS FOR\u0000 UNCONVENTIONAL RESERVOIRS","authors":"Ting Lei, S. Zeroug, S. Bose, R. Prioul, A. Donald","doi":"10.30632/T60ALS-2019_QQQ","DOIUrl":"https://doi.org/10.30632/T60ALS-2019_QQQ","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133535868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A NEW THROUGH-CASING ACOUSTIC LOGGING TOOL USING DUAL-SOURCE TRANSMITTERS","authors":"Xiaoming Tang, Yuanda Su, Bole Zhuang","doi":"10.30632/T60ALS-2019_TTTT","DOIUrl":"https://doi.org/10.30632/T60ALS-2019_TTTT","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121843161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THERMAL MATURITY-ADJUSTED LOG INTERPRETATION (TMALI) IN ORGANIC SHALE","authors":"P. Craddock, Richard E. Lewis, J. Miles, A. Pomerantz","doi":"10.30632/T60ALS-2019_JJJ","DOIUrl":"https://doi.org/10.30632/T60ALS-2019_JJJ","url":null,"abstract":"Petrophysical analysis of downhole logs requires accurate knowledge of matrix properties, commonly referred to as matrix adjustments. In organic-rich shale, the presence of abundant kerogen (solid and insoluble sedimentary organic matter) has a disproportionate impact on matrix properties because kerogen is compositionally distinct from all inorganic minerals that comprise the remainder of the solid matrix. As a consequence, matrix properties can be highly sensitive to kerogen properties. Moreover, the response of many downhole logs to kerogen is similar to their response to fluids. Relevant kerogen properties must be accurately known to separate tool responses to kerogen (in the matrix volume) and fluids (in the pore volume), to arrive at accurate volumetric interpretations. Unfortunately, relevant petrophysical properties of kerogen are poorly known in general and nearly always unknown in the formation of interest. A robust method of “thermal maturity-adjusted log interpretation” replaces these unknown or assumed kerogen properties with a consistent set of relevant properties specifically optimized for the organic shale of interest, derived from only a single estimate of thermal maturity of the kerogen. The method is founded on the study of more than 50 kerogens spanning eight major oiland gas-producing sedimentary basins, 300 Ma of depositional age, and thermal maturity from immature to dry gas (vitrinite reflectance, Ro, ranges from 0.5 to 4%). The determined kerogen properties include measured chemical (C, H, N, S, O) composition and skeletal (grain) density, as well as computed nuclear properties of apparent log density, hydrogen index, thermaland epithermal-neutron porosities, macroscopic thermal-neutron capture cross section, macroscopic fast-neutron elastic scattering cross section, and photoelectric factor. For kerogens relevant to the petroleum industry (i.e., type II kerogen with thermal maturity ranging from early oil to dry gas), it is demonstrated that petrophysical properties are controlled mainly by thermal maturity, with no observable differences between sedimentary basins. As a result, universal curves are established relating kerogen properties to thermal maturity of the kerogen, and the curves apply equally well in all studied shale plays. Sensitivity calculations and field examples demonstrate the importance of using a consistent set of accurate kerogen properties in downhole log analysis. Thermal maturity-adjusted log interpretation provides a robust estimate of these properties, enabling more accurate and confident interpretation of porosity, saturation, and hydrocarbon in place in organic-rich shales.","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123886752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NMR MEASUREMENT OF POROSITY AND DENSITY FROM DRILL CUTTING OF UNCONVENTIONAL TIGHT\u0000 RESERVOIRS","authors":"Stacey M Althaus, Jin-Hong Chen, J. Zhang","doi":"10.30632/T60ALS-2019_BBBBB","DOIUrl":"https://doi.org/10.30632/T60ALS-2019_BBBBB","url":null,"abstract":"Petrophysical data, essential for reservoir description and modeling, are obtained by expensive laboratory core measurements and/or well-log measurements. Due to the high cost, these tests are typically only carried out for a limited number of wells in the exploration phase. In contrast, drill cuttings are available for all the wells and thus can provide reservoir data throughout all the phases of the field development. A nuclear magnetic resonance (NMR) based method was developed to accurately determine petrophysical properties including porosity, bulk density, and matrix density from drill cuttings of unconventional tight reservoirs. NMR technology allows for the separation of liquid signals from within and between the shale cutting particles and when used in combination with Archimedes-based mass measurements provides accurate porosity and density data for both vertical and horizontal wells. The results from the NMR cutting analysis were in good agreement with other accepted lab measurement techniques having reproducibility well within 5%. We show the measured porosity and density from the cuttings changes significantly along a tested horizontal well, which is a strong indication of horizontal heterogeneity of the reservoir. The results may be used to guide selection of certain stages for hydraulic fracturing. This method can be easily adapted at the wellsite to evaluate reservoir heterogeneity and select zones with large porosity for optimized fracturing. Obtaining accurate petrophysical data from drill cuttings can provide quasi-real-time data for quick formation assessment for the wellsite engineers and cut costs by reducing or eliminating some expensive and inadequate formation evaluation tools.","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122978616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RESERVOIR PRODUCIBILITY INDEX (RPI) BASED ON 2D NMR T1-T2 LOGS","authors":"Ravinath Kausik, Tianmin Jiang, Lalitha Venkataramanan, A. Mutina, Erik Rylander, Richard E. Lewis","doi":"10.30632/t60als-2019_q","DOIUrl":"https://doi.org/10.30632/t60als-2019_q","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130719058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ESTIMATING CAPILLARY PRESSURE FROM NMR MEASUREMENTS USING A PORE-SIZE-DEPENDENT\u0000 FLUID SUBSTITUTION METHOD","authors":"You Wang, David Medellin, C. Torres‐Verdín","doi":"10.30632/T60ALS-2019_II","DOIUrl":"https://doi.org/10.30632/T60ALS-2019_II","url":null,"abstract":"This report introduces a workflow to calculate capillary pressure curves from NMR transverse relaxation time ( 𝑇 (cid:2870) ) distributions of partially hydrocarbon-saturated measurements. First, a pore-size-dependent fluid-substitution (PSDFS) joint inversion method is developed to correct 𝑇 (cid:2870) distributions for hydrocarbon effects in partially hydrocarbon-saturated rocks. A PSDFS joint inversion on the 𝑇 (cid:2870) distributions of samples at different hydrocarbon saturations is used to estimate input parameters for fluid substitution and to reconstruct the fully water-saturated 𝑇 (cid:2870) distribution. Next, the 𝑇 (cid:2870) distribution of the fully water saturated sample is converted to a pore-size distribution using an estimated surface relaxivity. Finally, assuming a linear relationship between pore and throat size distributions, the saturation-dependent capillary pressure curve can be estimated using a triangular tube model. The PSDFS joint inversion is validated on NMR measurements of Berea sandstone samples with different values of hydrocarbon saturation. The feasibility of our joint inversion method is confirmed by comparing the calculated fully water-saturated 𝑇 (cid:2870)","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117228177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ESTIMATING NET SAND FROM BOREHOLE IMAGES IN LAMINATED DEEPWATER RESERVOIRS WITH A\u0000 NEUTRAL NETWORK","authors":"Bo Gong, Dustin J. Keele, E. Toumelin, Simon Clinch","doi":"10.30632/t60als-2019_m","DOIUrl":"https://doi.org/10.30632/t60als-2019_m","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128413166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NEW 4¾-IN. ULTRASONIC LWD TECHNOLOGY PROVIDES HIGH-RESOLUTION CALIPER AND IMAGING\u0000 IN OIL-BASED AND WATER-BASED MUDS","authors":"Peng Li, Jonathan Lee, R. Coates, R. Marlow","doi":"10.30632/t60als-2019_t","DOIUrl":"https://doi.org/10.30632/t60als-2019_t","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122802056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INTEGRATED MULTI-PHYSICS WORKFLOW FOR AUTOMATIC ROCK CLASSIFICATION AND FORMATION\u0000 EVALUATION USING MULTI-SCALE IMAGE ANALYSIS AND CONVENTIONAL WELL LOGS","authors":"Andres Gonzalez, Lawrence Kanyan, Z. Heidari","doi":"10.30632/t60als-2019_a","DOIUrl":"https://doi.org/10.30632/t60als-2019_a","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126230054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"TEST PAPER","authors":"Susan E. Smith","doi":"10.30632/t60als-2019_kkkkk","DOIUrl":"https://doi.org/10.30632/t60als-2019_kkkkk","url":null,"abstract":"","PeriodicalId":117571,"journal":{"name":"SPWLA 60th Annual Logging Symposium Transactions","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132542364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}