The Cost Analysis of the Separation of Produced Formation Water From the Hydrocarbon Reservoir Using the Example of the Upper Miocene Sandstone Deposits of the Sava Depression

Ivšinović, Josip

doi:10.17794/rgn.2018.1.5

Cited by 10 publications

(7 citation statements)

References 2 publications

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“…However, other can be emphasised during development, like reservoir pressure and field water. Moreover, water injection (e.g., [19,20,21,22]) is cost effective process even for fluid with water portion larger than 90 %.…”

Section: Modified Geological Probability Applied For Estimation Of Wamentioning

confidence: 99%

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Increasing Efficiency in the Field Water Re-injection during Mature Hydrocarbon Reservoirs Water-Flooding, Case Study from the Sava Depression, Northern Croatia

Malvić¹,

Ivšinović²,

Velić³

et al. 2019

Preprint

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Here is analysed the process of water re-injection in the two hydrocarbon reservoirs/fields in the Upper Miocene sandstone reservoirs, located in the western part of the Sava Depression (Croatia). Namely, those are the "A" field with "L" reservoir and the "B" field with "K" reservoir. Both currently produce hydrocarbons using a secondary recovery method, i.e. water injection (in fact re-injection of the field waters). Three regional reservoir variables had been analysed, namely porosity, permeability and injected water volumes. The number of data was small in all three cases. For porosity: reservoir “L” included 25 data, reservoir “K” 19 data; for permeability: reservoir “L” 10 data, reservoir “K” 18 data; for injected volumes of water: reservoir “L” 10 data; reservoir “K” 3 data. It defined selection of mapping algorithms mostly designed for small datasets (less than 20 points), i.e. Inverse Distance Weighting, Nearest and Natural Neighbourhood. Additionally, the Ordinary Kriging was used, but only with jack-knifed variograms, producing many “artificial points”. Results are extensively tested, using cross-validation and shape recognitions, and the Inverse Distance Weighting method is described as the most appropriate approach for mapping permeability and injected volumes in both reservoirs (“K” and “L”). The Kriging could be slightly outlined as the best approach for porosity. Obtained maps made possible application of the modified geological probability calculation as tools for prediction of successfulness of future injection (probability of 0.56). Consequently, results made possible to plan future injection more efficiently, with smaller injected volumes and same of higher hydrocarbon recovery. That could prevent useless injection, decrease number of injection wells, and save energy and funds invested in such processes.

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Section: Modified Geological Probability Applied For Estimation Of Wamentioning

confidence: 99%

“…The similar procedure has been repeated here but using modified POS with aim to evaluate the most efficient way of future water injection. The cost of water separation [22] are 0.68 -1.37 USD/m 3 . The cost of water injection for single system [21] are 8.68± 2,00 HRK/m 3 .…”

Section: Risk Neutral Value For Future Water Injectionmentioning

confidence: 99%

Increasing Efficiency in the Field Water Re-injection during Mature Hydrocarbon Reservoirs Water-Flooding, Case Study from the Sava Depression, Northern Croatia

Malvić¹,

Ivšinović²,

Velić³

et al. 2019

Preprint

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“…Input data for economic analysis are: price of oil and gas (BP Annual Report…, 2017), costs of Artificial Lift Systems (Tennessen, 2002), costs of separation (Ivšinović, 2018) and injection (Ivšinović, 2017) of formation water, investment costs (capital workovers, well measurements etc. ), and other costs (miners' wages etc.).…”

Section: Economic Evaluationmentioning

confidence: 99%

Production of hydrocarbons from weakly consolidated sandstone reservoirs in the Croatian part of the Pannonian Basin System

Ivšinović¹,

Pleteš²,

Marinić³

2018

Min. miner. depos.

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Purpose. More efficient production of hydrocarbons from weakly consolidated sandstone reservoirs using improved method. Modification of the equipment according to the geological characteristics of the reservoir and the mode of production.Methods. Perforation is performed with two different types of charges (DP & BH), after that the modified gravel pack equipment is run in hole.Findings. The combination of double perforation and the application of modified gravel pack allows for more efficient hydrocarbons production from weakly consolidated reservoir without occurrence of sand in the flow, thus extending the production life of the oil and gas field with this type of problem in production.Originality. Application of improved method in hydrocarbon production from weakly consolidated reservoirs, which has shown improvement of production parameters. Practical implications.The technical and economic indicators of this method show the feasibility of its application to weakly consolidated reservoirs, allowing higher production of wells, thereby increasing the profitability of the field, and thus its lifetime. It is applicable to all weakly consolidated reservoirs, with proper design of gravel pack and analysis of geological properties of reservoirs.

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“…[21] described application of stochastic simulation for Lower Pontian reservoir in general (the CBPS). [22] presented the problem of selection appropriate mapping method for the dataset with small number of data (i.e., Nearest Neighborhood vs. Inverse Distance Weighting).…”

Section: Introductionmentioning

confidence: 99%

Kriging with Small Number of Data Supported by Jack-Knifing, Case Study in the Sava Depression (Northern Croatia)

Malvić¹,

Ivšinović²,

Velić³

et al. 2018

Preprint

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Presented is semivariogram and the Ordinary Kriging analyses of porosity data from the Sava Depression (Northern Croatia), as part of the Croatian part of the Pannonian Basin System. Data are taken from hydrocarbon reservoirs of the Lower Pontian (Upper Miocene) age, which belongs to the Klo&scaron;tar-Ivanić Formation. Original datasets had been jack-knifed with purpose to “artificially” increased data and calculate the more reliable semivariograms. The results showed that such improvements can assist in the interpolation of more reliable maps. The both sets, made by original and jack-knifed data, need to be compared using geological recognition of non-allowed shapes (“bull-eyes”, “butterfly effects”) as well as cross-validation results. That comparison made possible to select the most appropriate porosity interpolation.

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The Cost Analysis of the Separation of Produced Formation Water From the Hydrocarbon Reservoir Using the Example of the Upper Miocene Sandstone Deposits of the Sava Depression

Cited by 10 publications

References 2 publications

Increasing Efficiency in the Field Water Re-injection during Mature Hydrocarbon Reservoirs Water-Flooding, Case Study from the Sava Depression, Northern Croatia

Increasing Efficiency in the Field Water Re-injection during Mature Hydrocarbon Reservoirs Water-Flooding, Case Study from the Sava Depression, Northern Croatia

Production of hydrocarbons from weakly consolidated sandstone reservoirs in the Croatian part of the Pannonian Basin System

Kriging with Small Number of Data Supported by Jack-Knifing, Case Study in the Sava Depression (Northern Croatia)

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