First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production最新文献

{"title":"Forecasting geomechanical behaviour in pre-salt fields","authors":"D. Roehl, R. Quevedo, P. Firme","doi":"10.3997/2214-4609.201982016","DOIUrl":"https://doi.org/10.3997/2214-4609.201982016","url":null,"abstract":"","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131900302","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":"Exploratory-scale OBN seismic acquisition in Santos Basin","authors":"D. Ferreira, A. Martínez, C. Costa, F. Jouno, A. Khalil","doi":"10.3997/2214-4609.201982030","DOIUrl":"https://doi.org/10.3997/2214-4609.201982030","url":null,"abstract":"Santos Basin is well known for some of the largest pre-salt oil and gas fields in the world. For oil fields in production, OBN has emerged as the solution to improve the pre-salt images. It’s rich low frequency, full-azimuth coverage and long-offsets are ideal for velocity model building using FWI. The acquisition effort of conventional OBN layouts makes it unsuitable for large-scale exploration purposes. In this case, the use of sparse OBN acquisition for velocity model building together with NAZ streamer data for imaging can improve our understanding of complex pre-salt plays and fields during the exploration phase.","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132133220","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":"Porosity characterization of complex silicified carbonates reservoirs of BM-C-33","authors":"P. D. Luca, A. Waldum, A. S. Chandler, D. Hunt, O. P. Wennberg, G. McQuenn, D. Hulme, E. Castro, L. Loures, J. Matias, I. Søreide, A. Filgueiras","doi":"10.3997/2214-4609.201982031","DOIUrl":"https://doi.org/10.3997/2214-4609.201982031","url":null,"abstract":"Summary “Block BM-C-33 sits in the SW quadrant of the Campos Basin, approximately 200km off the coast of Rio de Janeiro, Brazil. Three discoveries (Seat, Gavea and Pao de Acucar) were made between 2009 and 2012. Following appraisal, these are now believed to hold reserves of more than one billion barrels of oil equivalent. Reservoirs in Block BM-C-33 were growing in the outer Campos Basin during the Aptian. They sit on top of rotated and eroded fault blocks and paleo volcanic highs. On a regional scale, they can be viewed as a distal continuation of the Coqueiros and Macabu formations. Seismically, the accumulations are characterized by a wedge-shaped and mounded external geometry ( Hunt, et al., 2019 ). The reservoirs of BM-C-33 are unique. The original rock has been subject to a range of diagenetic processes which completely have altered the original mineral assemblage and pore textures. The resulting reservoir rock displays a complex pore network - different from what is observed in other pre-salt reservoirs. Silica is a key component in the reservoirs of BM-C-33. According to recent works ( Lapponi et al, 2019 , Tritlla et al, 2018 ; Tritlla, et al, 2019 ), the origin of the silica is both early, during or shortly after deposition; and late, associated with hydrothermal activity most likely in Mid Albian ( Tritlla et al, 2018 ). Pore types are diverse and pores range in size from micro porosity to meter scale caverns. Measurements of permeability at different scales reflect this diversity. Permeability measurements on SWC’s capture matrix properties and are generally low (a few mD and below). DST’s on the other hand suggest average reservoir scale permeabilities of several hundreds of mD. Frequent and occasionally massive mud losses during drilling of reservoir sections confirm the presence of large-scale pore systems. Reservoir properties in carbonate reservoirs are closely tied to pore types. NMR and BHI (BoreHole Image) logs are keys for typing of matrix and larger scale pores respectively. Lack of whole core and production logs make conceptual models important but alternative scenarios are carried forward to capture the uncertainty span. Characterization of reservoir properties in BM-C-33 depends on multidisciplinary work and integration of data on a wide range of scales. Whilst the matrix holds most of the hydrocarbon in place, excess permeability features as fractures, faults, connected vugs and caverns control flow. This abstract discusses some key features and the work that has been done to characterize them.”","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115185603","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":"Innovative Imaging Technology to Unlock Presalt Reservoir Characterization","authors":"S. Arasanipalai, H. Lebit, A. Valenciano","doi":"10.3997/2214-4609.201982104","DOIUrl":"https://doi.org/10.3997/2214-4609.201982104","url":null,"abstract":"Summary Current imaging technologies such as Kirchhoff Migration and Reverse Time Migration (RTM) provide a level of seismic resolution that help capture hydrocarbon reservoirs and outline prospects. Least-Squares Migration (LSM) is becoming the new standard in high-end seismic imaging, providing a higher level of granularity necessary for prospect risk mitigation, reservoir characterization and well planning. In this paper, we present the advantages of using LSM for imaging and interpretation of presalt reservoirs of the prolific Santos Basin.”","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123900923","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 key uncertainty in pre-salt evaluations: Carbonates vs. Volcanic discrimination in the Campos & Santos Basins (Brazil)","authors":"G. Bonet, C. A. Luna, T. Watton, D. Hunt","doi":"10.3997/2214-4609.201982018","DOIUrl":"https://doi.org/10.3997/2214-4609.201982018","url":null,"abstract":"","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128613431","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":"Challenges in Brazil pre-salt carbonate reservoir characterization: a realistic 3D synthetic study","authors":"H. Wang, O. Burtz, R. Parth, Y. Yu, B. Curry, E. Hixon, B. Laugier","doi":"10.3997/2214-4609.201982007","DOIUrl":"https://doi.org/10.3997/2214-4609.201982007","url":null,"abstract":"Summary The ability to differentiate between good quality carbonate reservoir and low permeability limestone or volcano-clastic lithology using seismic data is key to successful exploration and development in the Brazil pre-salt play. However, the reservoir characterization is strongly coupled with the imaging challenges associated with the complex overburden and lateral property variations. In order to gain insights into this problem, we carefully build 3D elastic models for a synthetic study using real data acquisition parameters and simulated full-wavefield elastic data. The synthetic data generated via elastic full-wave simulation closely resembles the actual data challenges, even under ideal settings. The richness of this dataset and the complexity of the model provides a laboratory to test various workflows and approaches from conventional processing/imaging/ inversion to more complex imaging and reservoir characterization workflows.","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131301342","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":"Towards Efficient Ocean Bottom Seismic Acquisition in Pre-Salt Brazil","authors":"J. Lopez, G. Baeten, F. Kroode","doi":"10.3997/2214-4609.201982021","DOIUrl":"https://doi.org/10.3997/2214-4609.201982021","url":null,"abstract":"Summary The Brazilian Pre-Salt is undergoing rapid growth spurred by changes in local legislation, resulting in much increased demand for seismic data, especially Ocean Bottom Node data to characterize and monitor the complex carbonate reservoirs. This demand has led to a “traffic jam” of permit applications that will not allow surveys to be acquired where and when they are needed to influence business decisions. Increasing OBN seismic efficiency is one way to try to alleviate this congestion, by increasing the rate of node handling operations and the efficiency of source operations. We describe a model to estimate the duration and cost of such surveys, considering various scenarios for node deployment rates and number of seismic sources operating simultaneously. We identify the most efficient combinations that reduce idle time for the vessels. These include use of two autonomous source vessels or a single source vessel carrying quad and hexasource configurations. In all cases we use small volume seismic sources to reduce the acoustic energy output into the ocean. Field testing will be required to assess the ability of small sources (under 1000ci) to image the Pre-salt reservoirs, and the feasibility of deblending algorithms to preserve fidelity for 4D seismic monitoring.","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114869155","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 fractures in pre-salt reservoirs in the Campos Basin: examples from silicified carbonates in BM-C-33","authors":"O. P. Wennberg, G. McQueen, P. D. Luca, D. Hunt, A. S. Chandler, A. Waldum, F. Lapponi","doi":"10.3997/2214-4609.201982010","DOIUrl":"https://doi.org/10.3997/2214-4609.201982010","url":null,"abstract":"","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134575042","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":"Geopressure, Reservoir Properties and Advanced Geochemistry Analyses Along Pre-Salt in Santos and Campos Basins: From Oil Fields to Frontier Areas","authors":"S. Rostirolla, M. Mello, H. Kemna, W. Peres, O. Pedrosa, T. Nascimento","doi":"10.3997/2214-4609.201982106","DOIUrl":"https://doi.org/10.3997/2214-4609.201982106","url":null,"abstract":"Summary A wide-range analysis of subsurface data along the Pre-Salt Province of Santos and Campos basins revealed that the whole area shares strong similarities of key characteristics, such as, reservoir-pod and pressure compartmentalization, migration pathways and thermal evolution of the petroleum system. This investigation covers formation pressure data, petroleum system modelling and reservoir characterization aiming to understand the relationship among different basin domains, structural compartments, oil cracking signature, CO2 content and GOR distributions along the study area. One of the main objectives of this work is to support a risk assessment of the remaining exploration potential of the pre-salt open acreage, helping the technical evaluation of the new concession areas for future bid-rounds with factual elements that were obtained from existing oil fields. This approach may also be useful to support the drilling planning, to expect well testing productivity, and to forecast the geopressured settings, which can be important for future field development, principally if Gas and/or CO2 are present in quantities that can impact the production. The pressure compartments were characterized from wireline information obtained in key wells along Santos and Campos Basin, in which the well-to-well analysis is exemplified in Figure 1 and the comparison among wells in different compartments is illustrated in Figure 2 . The MDT pressure points were evaluated in the wells, aiming to establish the hydrocarbon and water formation gradients, as well as to characterize the average subsurface pressure at reservoir level. The results show a clear distinction of pressure compartments along the basins, as defined in Figure 2 , although what controls the geopressured environment is not completely understood. Commonly, as reported in the literature (e.g. Bradley & Powley, 1994 ), the pressure compartments are explained by the effectivity of the seal that prevents pressure equilibration to normal hydrostatic pressure. Nevertheless, zones of high and low pressures in Santos and Campos basins are not always directly related to the salt withdrawal, suggesting that other factors as disequilibrium compaction and thermal history might be very important in the dynamics of petroleum system and preserving conditions for the accumulations.","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124880172","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":"Non-marine carbonate reservoir architecture, genesis and petrophysical characterisation from analogues - Travertines, Shrubs, Laminites and Spherulites","authors":"H. Claes, J. Soete, M. Erthal, Ágnes Török, Zahra Mohammadi, Cihan Aratman, T. Miranda, A. Mancini, E. Capezzuoli, J. Schmatz, J. Aguillar, L. Zieger, R. Swennen","doi":"10.3997/2214-4609.201982014","DOIUrl":"https://doi.org/10.3997/2214-4609.201982014","url":null,"abstract":"Summary For the deep South-Atlantic Pre-Salt carbonate reservoirs information on reservoir heterogeneity between core and seismic scale is lacking. Worldwide non-marine carbonate reservoir analogues provide quantitative geometrical and petrophysical data. Large-scale outcrops with similar sedimentological, diagenetic, petrophysical and structural features give insight in reservoir controlling parameters from below core-scale up to seismic scale","PeriodicalId":443436,"journal":{"name":"First EAGE Workshop on Pre-Salt Reservoir: from Exploration to Production","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130272384","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}