Integrated Approach for Horizontal Side Track Candidate Selection in Sorochinsko-Nikolskoe Oil Field (Orenburg Region) (Russian)

2008 ◽  
Author(s):  
E.A. Salamatina ◽  
A.P. Sautkin ◽  
O.V. Safyannikova ◽  
V.V. Orekhov ◽  
M. Cimic ◽  
...  
Keyword(s):  
Integrated Approach ◽  
Oil Field ◽  
Candidate Selection ◽  
Orenburg Region ◽  
Track Candidate ◽  
Side Track ◽  
Horizontal Side

Visualizing Hydrocarbon Migration Pathways Associated with the Ringhorne Oil Field, Norway: An Integrated Approach

2021 ◽  
pp. 1-57
Author(s):  
David Connolly ◽  
Kristoffer Rimaila ◽  
Assia Lakhlifi ◽  
Gabor Kocsis ◽  
Ingrid Fæstø ◽  
...  
Keyword(s):  
Neural Network ◽  
Integrated Approach ◽  
Upper Jurassic ◽  
Oil Field ◽  
Hydrocarbon Migration ◽  
Gas Chimney ◽  
Hydrocarbon Charge ◽  
Geochemical Studies ◽  
Elastic Inversion ◽  
Migration Pathways

Norway’s Ringhorne Field is a faulted anticline which produces oil from Triassic (Statfjord) and Paleocene (Hermod) sands. It is located on the Utsira High. Geochemical studies of the produced oil indicate the oil is generated from mature Upper Jurassic marine shales in the adjacent Viking Graben. However, it has not been clear how oil migrated into the Triassic reservoirs and charged the overlying Paleocene reservoirs. Gas chimney detection using a proven neural network technique was used to detect the vertical hydrocarbon migration pathways on normally processed seismic data. The processing results were then validated using a set of criteria to determine if they represented true hydrocarbon migration rather than seismic artifacts. The chimney processing results using this traditional (shallow) neural network was compared with convolutional neural network (deep learning) results and geo-mechanical modeling on key lines. Key reservoirs were delineated using a stochastic (elastic) inversion approach. Reliable chimneys were then visualized in the vicinity of the producing reservoirs. The results showed pathways by which the Triassic fluvial sands received charge, and how these reservoirs had flank leakage to provide charge to shallower Paleocene reservoirs. This approach has now been used over hundreds of fields and dry holes in the Norwegian North Sea and worldwide as analogs to assess hydrocarbon charge and top seal risk predrill.

Integrated Approach to the Determination of the Origin of Hydrogen Sulfide in the Oil Field (Russia)

2021 ◽  
Author(s):  
D. Kalacheva ◽  
N. Morozov ◽  
D. Abramov ◽  
M. Kremenetskiy ◽  
E. Kazak ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Integrated Approach ◽  
Oil Field

scholarly journals Improving the Accuracy of Hydrocarbon Reserves Estimation Based on an Integrated Approach

2019 ◽  
Author(s):  
Дмитрий Завьялов ◽  
Dmitry Zavyalov
Keyword(s):  
Visual Analytics ◽  
Three Dimensional ◽  
Integrated Approach ◽  
Oil Field ◽  
Volume Calculation ◽  
Management Efficiency ◽  
Available Information ◽  
Hydrocarbon Deposits ◽  
Hydrocarbon Deposit ◽  
Hydrocarbon Reserves

The paper presents an integrated approach to computer modeling of hydrocarbon deposits, as well as the results of its application in oil volume calculation. Such approach involves all available information, as well as visual analytics, and allows to get a more accurate and reliable distribution of parameters in the volume of the three-dimensional computer model of hydrocarbon deposit due to its adjustment based on actual (historical) information about the operation of the oil field. The adjusted in this way model allows to obtain a more accurate predictive solution for the development and to improve the management efficiency of hydrocarbon deposits.

MAPPING HYDROCARBON CHARGE HISTORIES: DETAILED CHARACTERISATION OF THE SOUTH PEPPER OIL FIELD, CARNARVON BASIN

1996 ◽  
Vol 36 (1) ◽  
pp. 445 ◽  
Author(s):  
M. Lisk ◽  
S. C. George ◽  
R. E. Summons ◽  
R. A. Quezada ◽  
G. W. O'Brien
Keyword(s):  
Fluid Inclusion ◽  
Source Rock ◽  
Integrated Approach ◽  
Oil Field ◽  
Water Soluble ◽  
Source Rocks ◽  
The South ◽  
Oil Saturation ◽  
North West ◽  
Analytical Approaches

The South Pepper Field is a small hydrocarbon accumulation located in the Barrow Sub-basin, North West Shelf. In this study, an integrated approach has been adopted which uses new analytical approaches, and combines fluid inclusion, micro and conventional GC-MS, stable isotope, mineralogical and petrological data, to allow the accurate reconstruction of the charge history of this field. The micro GC-MS work on oil-bearing fluid inclusions in the reservoir section allows, for the first time, a comparison to be made between the geochemical characteristics of the presently reservoired oil with samples of the palaeo-r eservoired oils, as preserved within the fluid inclusions.Oil inclusion abundances (OIA) recorded within the reservoir section in South Pepper-1 show two distinct abundance peaks, which are interpreted to correspond to zones of high oil saturation. The first occurs near the top of the reservoir, in sands that are presently gas saturated and represents a palaeo-oil column. The oil inclusions occur primarily within pre-existing ankerite cement that crystallised from highly saline fluids, probably derived from Palaeozoic evaporites. Carbon isotope compositions measured on the ankerite are isotopically depleted, consistent with the derivation of CO2 from the maturation of organic matter. Geochemical characterisation of the oil contained within these inclusions shows the presence of biomarkers such as 30-norhopanes and methylhopanes which are indicative of a calcareous source rock. This excludes the Jurassic Dingo Claystone as a source for this early oil charge and migration of oil from a pre-Jurassic source rock is inferred. Subsequent uplift and sub-aerial exposure of the basin margin during the Middle Miocene allowed fresh waters to dilute formation waters in the Barrow Group and biodegrade this early oil charge. However, the abundance of highly water-soluble compounds in the fluid inclusion oil suggests that biodegradation occurred subsequent to initial oil emplacement.The second oil inclusion abundance peak corresponds to the present-day oil zone and, although absolute oil inclusion abundances are similar to those recorded in the upper zone, the fluorescence colours are significantly different, suggesting a different source for the second oil charge. Geochemical characterisation of oil recovered by DST confirms this later oil charge was derived from a more clay-rich oxic source and has previously been typed to the Upper Dingo Claystone. The low abundance of this type of oil inclusion in samples from above the present GOC indicates that this later oil charge failed to accumulate at the top of the reservoir and so it cannot have been displaced by a later gas charge. Rather, the oil inclusion data suggest the emplacement of gas, probably derived from Triassic source rocks, occurred either prior to, or coincident with, the second oil charge.High OIA in the presently water bearing reservoir of South Pepper-3 suggests that high oil saturation originally extended beyond the present OWC. However, the absence of stratigraphically equivalent high OIA samples in wells from the east of the field suggests that late stage westerly tilting of the structure resulted in a reduction in closure and loss of oil across the eastern spill point. The presence of high gas readings and associated amplitude anomalies in the Windalia Radiolarite suggests that hydrocarbons are continuing to leak up the bounding fault. However, the absence of significant residual oil zones in other wells suggests that liquids were largely retained and that leakage involved the progressive bleeding of gas across a soft seal.

Experience of Using Continuous Production Surveillance Techniques in Multilateral Wells on Yuzhno-Priobskoye Field

2021 ◽  
Author(s):  
Nadir Husein ◽  
Vishwajit Upadhye ◽  
Igor Leonidovich Novikov ◽  
Albina Viktorovna Drobot ◽  
Viacheslav Valeryevich Bolshakov ◽  
...  
Keyword(s):  
Hydraulic Fracturing ◽  
Oil Recovery ◽  
Recovery Rate ◽  
Capital Expenditure ◽  
Continuous Production ◽  
Improved Oil Recovery ◽  
Well Completion ◽  
Multi Stage ◽  
Side Track ◽  
Horizontal Side

Abstract This paper deals with the case of using the production surveillance inflow tracer based method in one of multi-lateral wells located in the Yuzhno-Priobskoye field. Tracer systems were placed in the well during the well construction by horizontal side tracking, and multi-stage hydraulic fracturing (MSHF) was performed, with the parent borehole remaining in operation. This technology allows developing the reservoir drainage area with a lateral hole and bringing the oil reserves remaining in the parent borehole into production, which results in an increased well productivity and improved oil recovery rate. Tracer systems are placed into the parent borehole within a downhole sub installed into the well completion. Polymer-coated proppant packs were injected during multi-stage hydraulic fracturing to deliver the tracers to the side track lateral. Dynamic production profiling was done to aid into more efficient development of complex and heterogeneous reservoirs and improve of the productive reservoir sweep ratio during the construction of multilateral wells, which enabled us to address several key problems: Providing tools for waterflood diagnostics in multilateral wells and finding an easy water shutoff method for a certain interval Assessing the efficiency of multi-stage hydraulic fracturing and elaborating the optimal treatment design Selecting the optimal mode of the multilateral well operation to prevent premature flooding in one or more laterals Evaluating whether well construction was performed efficiently, and a higher production was achieved by side tracking. Currently, the proposed first-of-its-kind solution enables the operator to obtain a set of data that can help not only significantly improve the wells’ productivity and increase the oil recovery rate, but also lead to a considerable economic savings in capital expenditure.

Electrochemical removal of sulfate from petroleum produced water

2015 ◽  
Vol 72 (2) ◽  
pp. 284-292 ◽  
Author(s):  
Pratiksha Jain ◽  
Mohita Sharma ◽  
Manoj Kumar ◽  
Prem Dureja ◽  
M. P. Singh ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Produced Water ◽  
Anaerobic Fermentation ◽  
Petroleum Industry ◽  
Integrated Approach ◽  
Oil Field ◽  
Synthetic Wastewater ◽  
Second Step ◽  
Sulfate Removal ◽  
Electrochemical Removal

Petroleum produced water (PPW) is a waste-stream that entails huge cost on the petroleum industry. Along with other suspended and dissolved solids, it contains sulfate, which is a major hurdle for its alternative use intended toward enhanced oil recovery. This study proposes a two-step process for sulfate removal from PPW. A synthetic PPW was designed for the study using response surface methodology. During the first step, sulfate present in PPW was reduced to sulfide by anaerobic fermentation with 80% efficiency. In the second step, more than 70% of the accumulated sulfide was electrochemically oxidized. This integrated approach successfully removed sulfate from the synthetic wastewater indicating its applicability in the treatment of PPW and its subsequent applications in other oil field operations.

scholarly journals HYGIENIC ASSESSMENT OF THE SECURITY WITH SELENIUM IN VARIOUS GROUPS OF THE POPULATION OF THE ORENBURG REGION

2019 ◽  
Vol 98 (1) ◽  
pp. 45-48
Author(s):  
Tatyana I. Burtseva ◽  
E. V. Salnikova ◽  
A. V. Skalny
Keyword(s):  
Comparative Analysis ◽  
Adult Population ◽  
Age Groups ◽  
Integrated Approach ◽  
Test Laboratory ◽  
Minimum Level ◽  
Actual Problem ◽  
Orenburg Region ◽  
Commercial Organization ◽  
Regions Of Russia

The integrated approach to studying of the element status of the population as a whole, is an actual problem in biology and medicine. 1270 people took part in research - children, teenagers and adults. Selenium definition in hair was carried out on the basis of test laboratory Autonomous Non-Commercial Organization Center of Biotic Medicine, according to methodical instructions TORMENTS 4.1.1482-03, 4.1.1483-03. Average values of selenium in hair (25 - 75 testily interval), received when carrying out population researches in various regions of Russia became a basis for an assessment of accumulation of selenium in hair surveyed. These testily intervals were accepted by us, according to A.V. Skalnu (2003) recommendations, as reference sizes for persons of the corresponding age. These concentration of selenium received during research in hair of the children’s population were much lower than reference sizes: at boys this indicator was lowered by 1,3 times, and at girls by 1,5 times of rather minimum level of physiologically admissible sizes for persons of the corresponding age. The similar picture developed and in group of the surveyed teenagers. Four multiple decrease in indicators of concentration of selenium in hair of both groups of teenagers concerning level 25 testily was established. The comparative analysis of concentration of selenium in hair of adult population of the Orenburg region established decrease in concentration of selenium in hair in all surveyed on the average by 1,5 times of rather reference sizes. The hygienic assessment of concentration of selenium in hair of all surveyed persons revealed decrease in concentration of selenium in hair rather physiologically admissible sizes for all surveyed age groups of the population of the Orenburg region.

More bang for your buck: optimising CSG extraction to achieve increased project value

2016 ◽  
Vol 56 (1) ◽  
pp. 75 ◽  
Author(s):  
Nick Allison
Keyword(s):  
Large Scale ◽  
Oil And Gas ◽  
Integrated Approach ◽  
Commodity Price ◽  
Oil Field ◽  
Production Model ◽  
Economic Resource ◽  
Fully Integrated ◽  
Unit Energy ◽  
Gas Market

Recent challenges within Australia’s oil and gas market have placed increased pressure on Australia’s CSG industry to reel-in burgeoning project costs. In a tight commodity price environment, developments need to extract greater value from projects. This paper outlines an innovative approach to CSG gathering system design by leveraging the digital oil field approach, utilising technology to rapidly optimise design, reduce design costs and optimise the development processes behind economic resource extraction aimed at ultimately delivering increased project value. In the past few years a step-change has been made in the optimisation of the engineering design model, with expanded concept level design, FEED-less design, and partially automated detailed design being executed on gathering system projects now being adopted. This was a step towards a fully integrated approach of the digital oil field. Through this process, it has become apparent that this methodology can be extended further through the targeted optimisation of the production model used in the establishment of CSG projects. This will enable increased revenue for a project. Field production profiles for both gas and water can be developed from preliminary reservoir assessment data. Using cost data for materials and installation, various scenarios can be assessed to optimise production volumes, surface infrastructure configuration, and total volume extracted on a dollar margin per unit energy basis. The optimisation measures explored in this paper are most critical to reservoir locations with a low drainage area per well, where reservoir drainage is maximised by refinement of the configuration of above-ground infrastructure. This has the potential to translate to a more optimised network, and greater profitability in the development of large-scale CSG fields.

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