Day 4 Thu, March 21, 2019最新文献

{"title":"The Transport Behavior of Liquid Hydrocarbon in Shale Nanopores","authors":"Tao Zhang, Xiangfang Li, Zhilin Cheng, Minxia He, Ying Yin, Qing Liu","doi":"10.2118/195127-MS","DOIUrl":"https://doi.org/10.2118/195127-MS","url":null,"abstract":"\u0000 Shale, as the \"tight\" rock with abundant nanopores, exhibits extremely low permeability on the order of micro-nanodarcy. The classic Darcy law, being widely and successfully used in developing the oil in conventional deposits, becomes insufficient for that in deposits of the shale. In this work, on the basis of molecular dynamic simulation data available in the literature, a model for oil transport through a single nanopore is established considering the boundary slip and the varying viscosity of the confined oil. The results show that, to accurately predict the oil transport properties in inorganic and organic nanopores, the viscosity correction for the confined oil transport in the nanopores is necessary. The oil transport capability in organic nanopores is greatly enhanced compared with that predicted by the no-slip Poiseuille equation, significantly enhancing the flow capability in the scale of nanoporous media, while the small slip length in the inorganic matter (IOM) has neglected effect. This implies that the greater concentration of drilling activity needs to be implemented in the region with higher TOC, where there is the \"sweets spots\" from the point of oil transport.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86198520","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":"FracBots: Overview and Energy Consumption Analysis","authors":"A. Alshehri, C. H. Martins","doi":"10.2118/194945-MS","DOIUrl":"https://doi.org/10.2118/194945-MS","url":null,"abstract":"\u0000 Fracture Robots (FracBots) prototype has been successfully designed, developed, fabricated and tested in the laboratory. They are magnetic induction (MI)-based wireless sensor nodes that have the inter-node wireless communication, sensing and localization estimation capabilities. FracBots are miniature devices that can operate as wireless underground sensor networks (WUSNs) inside hydraulic fractures to collect and communicate important data and generate real-time mapping. The energy source of the FracBots is a major challenge since the operational environment is the hydraulic fractures which impose a restriction on the size that doesn't allow enough space for the battery. In addition, the capability to extract the energy from a designate source is another key-role feature that has to be a function of the FracBots. In this regard, energy consumption analysis and evaluation has been done to ensure that all the FracBots have the required energy to work properly during the operation inside the hydraulic fractures. The electronic design of the FracBots must be highly efficient and capable of dramatically reducing power consumption. Thus, FracBots design is composed of ultra-low power electronic chips that enable a switch among an active mode, a deep sleep mode and a shutdown mode with automatic wake-up features (Low Power Modes (LPMs). Also, it includes an energy management unit that harvests surplus power stemming from the base station. This feature reduces the power consumption and ensure continuous operation. Based on our energy model and electronic design, deep analysis of the harvested and consumed energy is conducted in a laboratory testbed. Results of this study show the capability of the FracBots to harvest the required energy to operate and perform all the communications and sensing functionalities. Using ultra-low power electronic chips based on ferromagnetic technology (FRAM) and energy management unit reduce the power consumption of the FracBots by 50% at least.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84854120","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":"Extend Surface Casing Deeper to Eliminate Borehole Instability in Oil Field Turnkey Project","authors":"S. Ullah, Abdulqawi Al-Fakih, M. Almomen, Robert Famiev, A. S. Alatiyyah, Taimour Al Sharif","doi":"10.2118/194711-MS","DOIUrl":"https://doi.org/10.2118/194711-MS","url":null,"abstract":"\u0000 In one of the largest oil fields in Middle East, the typical well design is to set the conductor just 40 ft below the ground, the surface casing 100 ft inside next competent formation due to shallow total loss zone below the conductor and the intermediate casing in the first competent formation before entering the reservoirs interval. The intermediate section includes a combination of formations that have total losses zones and extremely unstable shales, especially when drilled with total losses.\u0000 In most cases, encountering lost circulation results in formation collapse. The severity of the formation collapse risk in this section ranges from simple tights spots cleared with reaming up and down to stuck pipes, sidetracks and in several cases plug and abandonment of wells. To reduce the likelihood and severity of this risk, there was a need to review the casing seats to isolate unstable formations before entering the intermediate loss zones.\u0000 A detailed study was carried out where diverse options were analyzed, including adding a casing string and changing casing seats of existing casing strings. The study concluded that keeping the same number of casing strings and deepening only the surface casing seat as close as possible to the intermediate loss zone, covering the entire unstable formation but not entering the intermediate loss zone, would be the most efficient solution. Experts supported this change based on the principle that dealing with an unstable formation when it is below the loss zone is easier than when the same formation is above the loss zone.\u0000 The new casing seat choice has been successfully implemented at over 100 wells, with 100% success ending the borehole instability problems. Since then there has been no sidetrack or location plugged and abandoned for borehole instability in intermediate section.\u0000 This paper encompasses a comprehensive analysis of the mechanism of unstable formations reaction to the loss circulation, resultant stuck pipe mechanisms, unsuccessful attempts to cure losses in this zone, improving fly mixed mud inhibition, impacts of modifications in well design on zonal isolation and finally reaching the safest, time and cost-effective solution.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"82 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87145958","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":"Continuous Proportional Steering for a Re-Entry Multi-Lateral Well in Cretaceous Reservoir in UAE Saves Rig Days and Achieves Reservoir Contact Objectives in a One-Bit Run","authors":"Adeniyi Adams, A. Soliman, Lichuan Deng, Imad Jurdi, Mohamed Salem Al Hosani, Adnan Al Menhali, Jose David Cardona Ardila","doi":"10.2118/194818-MS","DOIUrl":"https://doi.org/10.2118/194818-MS","url":null,"abstract":"\u0000 The challenge was to achieve more reservoir contact in a cretaceous tight reservoir to improve production and maximize recovery. Multilateral well campaigns were performed to meet these objectives.\u0000 This case study describes an effective workflow for performing openhole sidetracks in this challenging medium-hard carbonate formation. The workflow maintained reservoir contact and achieved the desired production objectives.\u0000 Two 6-in. multilateral drain sections were successfully drilled by performing openhole sidetrack using the continuous proportional steering method (CPSM). This method is not new to the industry, but this case study describes the systematic, unique workflow that was designed and followed to ensure a successful sidetrack in this low-porosity, hard formation.\u0000 The sidetrack implementation started by creating humps at inclinations ranging from 88 to 91 degrees into the formation in the original 6-in. section. These humps were confirmed using near-bit inclination data (4.5 ft from the bit) and were identified as the sites for initiating a sidetrack. This paper discusses the best practices that were key to the successful execution of the project in one run on the first attempt.\u0000 After the sidetrack, use of appropriate combinations of shallow and deep logging-while-drilling (LWD) measurements in the same bottom hole assembly (BHA) enabled the direct geosteering of the well, exposing more reservoir surface area than planned.\u0000 A reduction of 10% from the planned well duration was achieved. Two 6-in. laterals, each approximately 4000 ft, were drilled in a single run and 100% reservoir contact was achieved.\u0000 This experience proved that planning and precise execution could enable drilling of openhole sidetracks, even through hard formations. These sidetracks can then achieve fishbone wells with desired reservoir contact and realize the field development objectives in a technically robust and cost-efficient manner.\u0000 CPSM does not rely on a pressure drop for steering. Although this proof of concept was performed in a relatively hard formation, similar workflows with appropriate drilling engineering may be applied to less-competent formations as well. The detailed procedure and flowchart created from the experience with the sample well can be adopted for use in similar applications.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84020519","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 Comprehensive Review of Smart/Intelligent Oilfield Technologies and Applications in the Oil and Gas Industry","authors":"C. Temizel, C. H. Canbaz, Yildiray Palabiyik, D. Putra, Ahmet Asena, R. Ranjith, K. Jongkittinarukorn","doi":"10.2118/195095-MS","DOIUrl":"https://doi.org/10.2118/195095-MS","url":null,"abstract":"\u0000 Smart field technologies offer outstanding capabilities that increase the efficiency of the oil and gas fields by means of saving time and energy as far as the technologies employed and workforce concerned given that the technology applied is economic for the field of concern. Despite significant acceptance of smart field concept in the industry, there is still ambiguity not only on the incremental benefits but also the criteria and conditions of applicability technical and economic-wise. This study outlines the past, present and the dynamics of the smart oilfield concept, the techniques and methods it bears and employs, technical challenges in the application while addressing the concerns of the oil and gas industry professionals on the use of such technologies in a comprehensive way.\u0000 History of smart/intelligent oilfield development, types of technologies used currently in it and those imbibed from other industries are comprehensively reviewed in this paper. In addition, this review takes into account the robustness, applicability and incremental benefits these technologie bring to different types of oilfields under current economic conditions. Real field applications are illustrated with applications in different parts of the world with challenges, advantages and drawbacks discussed and summarized that lead to conclusions on the criteria of application of smart field technologies in an individual field.\u0000 Intelligent or Smart field concept has proven itself as a promising area and found vast amount of application in oil and gas fields throughout the world. The key in smart oilfield applications is the suitability of an individual case for such technology in terms of technical and economic aspects. This study outlines the key criteria in the success of smart oilfield applications in a given field that will serve for the future decisions as a comprehensive and collective review of all the aspects of the employed techniques and their usability in specific cases.\u0000 Even though there are publications on certain examples of smart oilfield technologies, a comprehensive review that not only outlines all the key elements in one study but also deducts lessons from the real field applications that will shed light on the utilization of the methods in the future applications has been missing, this study will fill this gap.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82562324","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":"Three-Phase Sandstone Acidizing: Quantification and Analysis of Evolved CO2 in the Presence of Oil and Water","authors":"Sajjaat Muhemmed, H. Kumar, H. Nasr-El-Din","doi":"10.2118/194776-MS","DOIUrl":"https://doi.org/10.2118/194776-MS","url":null,"abstract":"\u0000 The proposed paper presents a detailed study on evolving CO2 due to calcite mineral dissolution, and its ensuing activity during the matrix acidizing of sanstone reservoirs. Coreflood experiments were conducted in acidizing, and interpreted via simulation studies using a three-phase, two scale continuum model. Sensitivity studies were then performed on the calibrated simulation model. Acid injection was performed on 6 in.-length, 1.5 in.-diameter Bandera Brown sandstone cores of variable calcite content, using 15 wt% HCl single-phase coreflood experiments at high back pressures were conducted to calibrate and initially test the three-phase, two-scale continuum model. Experimentally measured rock-heterogeneity via computed tomography (CT) scans, relative-permeability and capillary pressures, oil-water interfacial tension and contact-angle parameters were inputs for three-phase, two-scale model-based history matching and sensitivity studies. The three-phase, two-scale continuum model was able to match all performed coreflood experiments with a good level of accuracy. The acid-calcite chemical reaction parameters were fixed in all cases to ensure consistency in analysis. Oil production was observed, with an average of 40% recovery of the residual oil in place at CO2 miscible pressures. CO2 miscibility in oil enhances swelling with time, which was seen as the main mechanism for oil production. A direct symmetry was observed between the oil recovery and average CO2 moles in oil. The recovery curve flattened once surrounding oil reached its full-saturation level with CO2. Reduction in oil-water interfacial-tension increased the recovery factor only by a slight margin, owing to dependency on evolved CO2 volume. Immiscible CO2 conditions yielded no residual oil recovery. The successful application of the three-phase, two-scale continuum model approach sets a new bar in the area of sandstone acidizing. The acid breakthrough criterion has been revised toward application in a three-phase environment. The potential of CO2, a by-product of acidizing, towards its contribution in swelling oil in the presence of a three-phase environment, and towards possible oil recovery in the event of flowing back a well.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91253392","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":"Beyond Steel Casing: Detecting Zonal Isolation in the Borehole Environment","authors":"T. Eltsov, T. Patzek","doi":"10.2118/195036-MS","DOIUrl":"https://doi.org/10.2118/195036-MS","url":null,"abstract":"\u0000 Electrically resistive composite casing materials are being introduced to the oil & gas industry. Resistive casing enables electromagnetic logging for exploration and reservoir monitoring, but it requires development of new logging methods. Here we present a technique for the detection of integrity of magnetic cement behind resistive casing. We demonstrate that an optimized induction logging tool can detect small changes in the magnetic permeability of cement through a non-conductive casing in a vertical (or horizontal) well. We can determine both integrity and solidification state of the cement filling annulus behind casing. Changes in magnetic permeability influence mostly the real part of the vertical component of magnetic field. The signal amplitude is more sensitive to a change of magnetic properties of the cement, rather than the signal phase. Our simulations show that optimum separation between the transmitter and receiver coils ranges from 0.25 to 0.6 meters, and the most suitable magnetic field frequencies vary from 0.1 to 10 kHz. A high-frequency induction probe operating at 200 MHz can measure the degree of solidification of cement. The proposed method can detect borehole cracks filled with cement, incomplete lift of cement, casing eccentricity and other borehole in homogeneities.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"157 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78224923","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":"Open-Hole Logging While Tripping LWT Through Drill Pipes, as a New Technology for Risk Mitigation and Cost Optimization in Abu Dhabi Onshore Fields","authors":"Fathy ElWazeer, H. A. Chaker, Maarten Propper","doi":"10.2118/194781-MS","DOIUrl":"https://doi.org/10.2118/194781-MS","url":null,"abstract":"\u0000 The ability to measure formation petro physical properties thru drillpipe has always been a challenge. It requires unconventional approaches to remove the effects of metal and borehole fluids on both the transmitted and received logging signals. This paper will present a proven technology executed in more than 1,000 wells all over the world and a first two successful trail case study from ADNOC Onshore wells in the Middle East.\u0000 The main objective is to acquire triple combo data (resistivity, density, neutron, gamma ray, spectral gamma ray & caliper) using the LWT conveyance and acquisition technology where there is a high risk of downhole triple combo Logging While Drilling (LWD) and or wireline (WL) tools getting stuck and the risk of losing radioactive sources.\u0000 The new patent pending technique was executed by using a slim downhole measurement tools inside specially designed drill collars invisible to the measurement sensors. LWT collars can be used for drilling and reaming as with normal drill collars. Propagation resistivity and neutron measurements are mostly like conventional techniques in tools physics. Density and nuclear caliper are measured by modelling the responses of three detectors short, medium and long distance away from the cesium source.\u0000 The measured LWT log data has been validated through back to back comparisons with WL & LWD) logs showing almost one to one correlation considering the effects of mud invasion due to lapsed time between runs, different wellbore condition and different depth of investigations.\u0000 Measured caliper, resistivity, density, neutron from LWT showed respectable match with WL or LWD tool. The differences in log responses are explained by differences in tool physics, logging speeds and environmental conditions. Similarly, the computed porosity from LWT tool comparison with WL and LWT porosity has almost the same statistics. The Quality LWT data was acquired in both wells at virtually zero LIH risk and minimum extra drilling rig time.\u0000 Introducing the new LWT technique to measure accurate Open Hole formation evaluation data from inside the drill-string is a cost-effective solution in various challenging scenarios, Exploratory/ Appraisal/ Development risky & challenging wells with unknown reservoir pressures or unsystematic depletion scenarios, complex downhole in-situ stress regimes, challenging tectonically faulted or fractured areas & unstable shales and many more, posing challenge to drill stable holes and a threat to LWD/ WL radioactive tool stuck.Unplanned deviated 8-1/2′ hole section geo-steered by MWD-GR, where at last minute triple combo is desired.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"7 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78429521","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":"Strategy Towards Unlocking and Accelerated Development of Low Permeability, Microporous Reservoirs-II","authors":"Kamlesh Kumar, Zaidi Awang, MohamedOsman. Azzazi., A. Hamdi, B. Hughes, S. Abri","doi":"10.2118/194762-MS","DOIUrl":"https://doi.org/10.2118/194762-MS","url":null,"abstract":"\u0000 The microporous rock types in Upper Shuaiba are low permeability (~ 1mD) rocks occurring in thin (2-5 m) formations within the extensive Upper Shuaiba carbonate formations in Lekhwair. These microporous rocks constitute a significant volume of hydrocarbon in-place. Unlike the higher quality rudist-rich and grainstone rock types, appraisal pilots in the microporous areas have shown poor performance with waterflood development, which is the preferred development concept in the entire Lekhwair field. Two work streams are active in parallel to identify a technically and commercially feasible development option: Phase 1, technology trials to enable a successful waterflood implementation, and Phase 2, further studies to screen the potential of enhanced oil recovery (EOR) techniques and other light tight oil development.\u0000 The technology trial work stream, initially considered four initiatives targeting injectivity improvement. To date, trials are complete for abrasive jetting and designer acid stimulation, early results are available for Directional Acid Jetting, and evaluation of Fracture Aligned Sweep Technology (FAST) is ongoing with hydraulic fracturing evaluation accelerated to Phase 1 due to synergies with the FAST evaluation. Trial results to date:\u0000 Abrasive Jetting: 7 trials complete, limited success in improving injectivity. Designer Acid Stimulation: 1 trial complete, no to limited injectivity improvement Directional Acid Jetting: implemented in 3 wells, injectivity improvement in early injection FAST: trial planning ongoing Hydraulic Fracturing: trial planning ongoing\u0000 This paper discusses the encouraging results and learnings to date with regard to these new technology trials, and the early screening results for the implementation of gas injection as an alternate recovery mechanism.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75990322","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":"Improving the Permeability Derivation from NMR Data for Reservoir Rocks with Complicated Pore Connectivity","authors":"H. Kwak, Jun Gao, A. Harbi","doi":"10.2118/195113-MS","DOIUrl":"https://doi.org/10.2118/195113-MS","url":null,"abstract":"\u0000 The formation permeability is one of the most important Petrophysical information acquired by low field Nuclear Magnetic Resonance (NMR) data. The absolute permeability of reservoir rocks can be accurately calculated by porosity measured by NMR if permeability is well correlated with porosity [1, 2]. This is true for the rocks with all pores are well connected, such as conventional sandstone reservoir. The correlation between permeability and porosity, however, does not always established well for carbonate reservoir rocks, which are known to have heterogeneous pore-to-pore connectivity. Thus, without accurate pore connectivity information, the permeability derived from NMR data for rocks with poor connection among pores is not quite accurate.\u0000 The current study proposes a new method to measure an accurate pore-to-pore connectivity from the total volume of a fluid displacement through miscible single phase fluid mixing process. The pore connectivity factor is calculated from the fluid connectivity through different pore systems which can be derived by the volume comparison of NMR invisible D2O replacement with NMR visible H2O in each pore systems. Once the pore connectivity is measured, it is applied to the modified permeability model, such as modified free-fluid model (Timur-Coates model) [3], to calculate accurate permeability. Another benefit of the proposed method is the flexibility of D2O injection condition.\u0000 Carbonate reservoir rocks with various degrees of connectivity have been studied in the current study. For the verification purpose, the permeabilities calculated by the proposed method have been compared to those measured by other conventional laboratory techniques.\u0000 The proposed method can also be applied to NMR logging technique for accurate NMR driven permeability derivation which currently accepted as references for reservoirs with complicated connectivity, such as carbonates.","PeriodicalId":11031,"journal":{"name":"Day 4 Thu, March 21, 2019","volume":"275 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76517035","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}