Petroleum Research最新文献

{"title":"Employment of mud-pulse generator for improvement of efficiency of a wellbore producing in complex mining and geological conditions","authors":"Bibinur Akhymbayeva","doi":"10.1016/j.ptlrs.2023.07.004","DOIUrl":"10.1016/j.ptlrs.2023.07.004","url":null,"abstract":"<div><p>In this study, the employment of mud-pulse generators to improve the efficiency of wellbores under complex mining and geological conditions is examined. A systemic analysis is made of the primary theoretical basis of the study. The benefits of a mud-pulse generator (a high-impulse hydraulic hammer) for wellbore production are stated based on the presented theoretical basis. The results not only show the benefits of mud-pulse generator employment but also provide an analysis of methods that can be used to improve the high-impulse hydraulic hammer efficiency. The acquired results have a substantial practical value not only for specialists, who research, develop, and manage wellbore operations, but also for engineers, who improve the process and modernize existing wellbores, and other experts in the field of wellbore production.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 92-97"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000510/pdfft?md5=36f4858964d0c737cecb47b5faf6ffea&pid=1-s2.0-S2096249523000510-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42650924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics and genesis of tuffaceous shale oil lithofacies:A case study of Lucaogou Formation in Santanghu Basin","authors":"Dongsheng Xiao,&nbsp;Xiong fei Xu,&nbsp;Jilun Kang,&nbsp;Yiting Zhang","doi":"10.1016/j.ptlrs.2023.11.003","DOIUrl":"10.1016/j.ptlrs.2023.11.003","url":null,"abstract":"<div><p>Lucaogou Formation in the Santanghu Basin is a special lacustrine fine-grained sedimentary deposits rich in volcanic debris and carbonate, with abundant shale oil resources. However, understanding of shale oil characteristics and genesis remains unclear. Lithofacies, sedimentary environment, and formation mechanisms of tuffaceous shale oil are investigated based on core and thin section observations, X-ray diffraction, field emission SEM and geochemical analysis. Results show that three mixed lithofacies types are developed in Lucaogou Formation: blocky tuff, laminated tuffaceous dolomite, and laminated dolomitic tuff. These lithofacies types are characterized by high content of felsic and dolostone, widespread organic matter, and low clay content. Formation of tuffaceous shale oil sweet spots is primarily influenced by four factors: inputting of volcanic ash as a high-quality source rocks and reservoirs provides good material basis; devitrification of volcanic glass, calcitization, and dissolution are crucial for formation of reservoirs; expulsion of source rocks with high-abundance organic matter expulsion facilitates migration and accumulation of hydrocarbon in adjacent reservoirs; fracture development improves reservoir permeability to form highly productive sweet spots. By analyzing characteristics and genesis of tuffaceous shale oil, the main controlling factors of reservoir physical property and oil saturation are clarified, which is of great significance for selection of shale oil exploration zones.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 37-47"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000881/pdfft?md5=ec53f169c8237d338a4174cb7407ec85&pid=1-s2.0-S2096249523000881-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139017686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"n-Alkane bound biomarker fingerprints from asphaltenes in the bitumens of Eastern Dahomey Basin, Nigeria: Source and genetic implications","authors":"Modupe A. Egbeola ,&nbsp;Olubunmi C. Adeigbe ,&nbsp;Olajide J. Adamolekun","doi":"10.1016/j.ptlrs.2023.07.005","DOIUrl":"10.1016/j.ptlrs.2023.07.005","url":null,"abstract":"<div><p>The asphaltene fractions of the bitumens of Eastern Dahomey Basin in Nigeria, were analyzed by flash pyrolysis-gas chromatography (Py-GC) method in order to unravel its geochemical history and properties. The distributions of the initial biomarkers of the original oils from the pyrolysates are related to the assessment of organic matter source, paleo-redox conditions and source environment during deposition. Also, it effectively establishes the genetic relationship of the bitumens. The <em>n</em>-alkane distributions in the pyrolysates reveal <em>n</em>C₉-<em>n</em>C₃₂ <em>n</em>-alkanes, maximizing at <em>n</em>C₁₄, isoprenoids-pristane (Pr) and phytane (Ph), and some <em>n</em>-alkene peaks. High peaks of low to medium-weight <em>n</em>C₉-<em>n</em>C₂₀ <em>n</em>-alkanes and low peaks of <em>n</em>C₂₁₊ <em>n</em>-alkanes characterize the distributions. These reveal that abundant algal organic matter with some terrigenous inputs contributed to the source rock of the bitumens. The high concentration of marine organic matter inputs to the source rock is further confirmed by the <em>n</em>C₁₇/<em>n</em>C₂₇ ratios which range from 5.39 to 19.82 and shows the predominance of <em>n</em>C₁₇ alkanes. The general unimodal <em>n</em>-alkane distributions in the bitumens indicate derivation from similar organic matter types showing that they are genetically related. The anoxic to suboxic environmental conditions that prevailed during the deposition of the sediments is revealed by the isoprenoids, Pr/Ph ratios (0.72–1.28). Pristane/<em>n</em>C₁₇ and Phytane/<em>n</em>C₁₈ range from 0.16 to 0.33 and 0.22 to 0.56, revealing that the bitumens were from predominantly marine organic matter (type II kerogen) preserved in a reducing environment with no evidence of biodegradation. However, the Ph/<em>n</em>C₁₈ ratio and the cross plot of Pr+Ph/<em>n</em>C₁₇+<em>n</em>C₁₈ allow the classification of the bitumens into two subfamilies/groups (A and B). The bitumen samples have low wax content as indicated by the degree of waxiness ranging from 0.21 to 0.38 which confirms low terrigenous input. Based on the carbon preference index (CPI: 0.92 to 1.55) and odd-even predominance (OEP: 0.70 to 1.36), it is concluded that the bitumens are immature to marginally mature.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 85-91"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000522/pdfft?md5=d9c661e3d23e3a95da6abfa91115320d&pid=1-s2.0-S2096249523000522-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48557014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of synthesis parameters on the performance of crosslinked Co-polymers with clays for conformance control","authors":"A.A. Roslan ,&nbsp;N.A.A. Aziz ,&nbsp;N.F.A. Deraman ,&nbsp;I. Dzulkarnain","doi":"10.1016/j.ptlrs.2023.07.006","DOIUrl":"10.1016/j.ptlrs.2023.07.006","url":null,"abstract":"<div><p>Conformance control or water shut-off is a technique used to improve oil recovery. During conformance control, polymers block high permeability water areas and redistribute water drive toward unswept oil zones. In this study, co-polymers (denoted ATP-PGV/AM-co-AMPS) were synthesized using acrylamide (AM) and 2-acrylamide-2-methylpropane sulfonic acid (AMPS) as the monomers, polyethylene glycol (PEG)-200 and methylenebisacrylamide (MBA) as the crosslinkers, attapulgite (ATP) and bentonite (PGV) as the clay types, and ammonium persulfate (APS) as the initiator, in addition to paraffin oil and surfactants. Samples were synthesized using inverse emulsion polymerization with different concentrations of monomers, crosslinkers, and clays, and they were characterized using Fourier-transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX). FTIR spectra of the samples confirmed the existence of sulfonate and hydroxyl groups, which are important for polymer swelling. SEM-EDX images indicated that the morphology and elemental composition were different before and after swelling, confirming the occurrence of swelling. Moreover, samples were placed in sodium chloride solution (20,000 ppm) for 7 days to evaluate swelling at both room temperature and 90 °C. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used to determine the thermal characteristics of the microparticles. Finally, rheological measurements were used to assess the deformation and rheological behavior of the hydrogels. The results showed that after 1 day, good swelling without loss of mechanical strength was achieved with the composite synthesized using 10% AM, 15% AMPS, 6% PGV, and 10% ATP.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 98-108"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000534/pdfft?md5=6f1c6a3a817087b4aa07ad3970c828b6&pid=1-s2.0-S2096249523000534-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46397636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling displacement flow inside a full-length casing string for well cementing","authors":"Hu Dai ,&nbsp;Ali Eslami ,&nbsp;Jason Schneider ,&nbsp;Gefei Liu ,&nbsp;Fred Schwering","doi":"10.1016/j.ptlrs.2023.08.004","DOIUrl":"10.1016/j.ptlrs.2023.08.004","url":null,"abstract":"<div><p>While computer modeling of annular displacement efficiency is widely applied in cementing engineering, modeling the displacement flow inside a casing or drill string for cementing operations has received less attention. Although predicting displacement efficiency inside a full-length pipe is desired by cementing engineers, the attempt of developing a model with both efficiency and accuracy faces challenges. Access to computer simulators for this purpose is limited. Compared with annular flow, the displacement flow inside pipe, although within a simpler geometry and without eccentricity effect, is not simpler in physics, modelling strategy and predictability, because a variety of flow patterns and flow instabilities can develop to create complicated fluid interfaces. In this paper, we present an integrated numerical model developed to simulate displacement flows inside a full-length pipe, which connects an existing annulus model to enable complete displacement simulations of cementing jobs. The model uses three-dimensional grid to solve fluid concentrations with degrees of mixing, and incorporates flow instability detection and flow regime determination. Applied in cementing, the model accounts for effects of pumping rate, well inclination, pipe rotation, fluid densities, rheological parameters and more. This computationally efficient model does not rely on high-resolution mesh as often required by conventional Computational Fluid Dynamics models, thus it is suitable to be implemented in a cementing software for daily use by well cementing engineers. The methodology of the model is discussed in detail in this paper. To validate the model, we examine simulation results against experimental results obtained in our laboratory tests and CFD simulations; acceptable agreement is found under different testing conditions. We also presented two case studies of real cementing jobs with cement evaluation logs compared to simulation results, showing that the model can predict consistent displacement efficiency results.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 1-16"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000571/pdfft?md5=ca2976643be916a185dd30f3d5887769&pid=1-s2.0-S2096249523000571-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41729239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microfiltration, ultrafiltration and nanofiltration as a post-treatment of biological treatment process with references to oil field produced water of Moran oilfield of Assam","authors":"Amarjit Rajbongshi ,&nbsp;Subrata Borgohain Gogoi","doi":"10.1016/j.ptlrs.2023.09.001","DOIUrl":"10.1016/j.ptlrs.2023.09.001","url":null,"abstract":"<div><p>The selection of an apt technology for the treatment of Oilfield Produced Water (OFPW) depends mainly on the quality of OFPW and methods of pre-and post-treatment processes. The most challenging part of the OFPW treatment process is the removal of Suspended Solid (SS), Oil &amp; Grease (O&amp;G) and dissolved organics. SS and O&amp;G pose an acute problem to the membrane filtration system by fouling the membrane surface which increases operation &amp; maintenance costs and decreases the life of the membrane. Fouling of the membrane surface is mainly attributed to the presence of low molecular weight aromatic compounds and naphthenic acids in the suspended and dissolved organic compounds. Thus, the removal of these suspended and dissolved organic compounds before membrane filtration proffers a challenge to the researchers. In this research, bioremediation process has been applied to remove the organic compounds and the performance and fouling behaviour of hollow fibre Microfiltration (MF), Ultrafiltration (UF) and Nanofiltration (NF) membranes after the bioremediation process has been analyzed in detail. The level of toxicity was determined by comparing the pollutants with the safe discharge limit for disposal into the environment set by Central Pollution Control Board (CPCB), India. The research presents its novelty by using a hydrocarbon-degrading bacteria, <em>Pseudomonas aeruginosa</em> for the Reduction of Organic Loads (ROL) from OFPW of Moran oil field of Upper Assam as a pre-treatment to membrane filtration. The Total Sum Corrected Area (TSCA) method through chromatographic analyses was used for this. The organic loads removal from OFPW by the TSCA method was found to be 67–100%, 100% and 100% after 7, 14 and 21 days of bioremediation respectively. The major parameters in feed OFPW of Moran oil field were found to be pH (7.5–9.3), Total Dissolved Solid (TDS) (1.79–4.75) ppt, O&amp;G (1.78–2.8) ppt, Salinity (2.94–6.98) ppt, Chloride (Cl⁻) (1.6–3.86) ppt, Bicarbonate (HCO₃⁻) (2.89–4.03) ppt. It was observed that the ranges of pollutants removal by NF was highest such as TDS (26–86%), salinity (81–86%), turbidity (78–94%), hardness (67–75%), O&amp;G (96–99%), Cl⁻ (80–89%) and HCO₃⁻ (95–97%).</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 143-154"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000662/pdfft?md5=260972abdffb0ecca570f50b2692b034&pid=1-s2.0-S2096249523000662-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135388100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of asphaltene reaggregation in toluene/heptane mixture by dynamic and static light scattering","authors":"Vladimir N. Kuryakov","doi":"10.1016/j.ptlrs.2023.03.004","DOIUrl":"10.1016/j.ptlrs.2023.03.004","url":null,"abstract":"<div><p>This paper presents the study of the effect of multiple ultrasonic impacts on submicron asphaltene aggregates in a toluene/heptane solution, conducted with dynamic light scattering technique. The objects of the study were four samples of asphaltenes obtained from four different oils. For all samples, the change in the average size of the asphaltene submicron aggregates with time was measured after the addition of a precipitant (heptane) to a solution of asphaltenes in toluene at an amount above the threshold concentration. Asphaltene aggregates formed in solution after the addition of the precipitant and were subjected to ultrasonic treatment, which led to the destruction of the asphaltene aggregates. Aggregation of destroyed asphaltenes was observed. The kinetics of this aggregation were similar to the kinetics of aggregation of asphaltenes after the addition of a precipitant. Multiple iterations of asphaltene aggregate destruction in the sample led to a significant change in the kinetics of aggregation: the growth of aggregates slowed and stabilized at a size of approximately 200 nm and 30 nm for the different studied samples.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 48-54"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000170/pdfft?md5=ecf02b7499afefe92b014133630d03f0&pid=1-s2.0-S2096249523000170-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135509833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High resolution sequence stratigraphy of the Mishrif Formation (Cenomanian-Early Turonian) at zubair oilfield (al-rafdhiah dome), southern Iraq","authors":"Aymen A. Lazim ,&nbsp;Maher J. Ismail ,&nbsp;Maher M. Mahdi","doi":"10.1016/j.ptlrs.2023.08.002","DOIUrl":"10.1016/j.ptlrs.2023.08.002","url":null,"abstract":"<div><p>The Mishrif Formation (Cenomanian -E Turonian) is one of the most important geological formations in the Middle East and Iraq because it contains enormous petroleum accumulations. It is considered to be the first reservoir in the region, and is still being studied because of its economic significance. The carbonate of the Mishrif Formation derives from a variety of depositional settings, including mid-ramp, shoal, lagoon, and intertidal. The five main microfacies discussed in this paper are wackestone, packstone, grainstone, floatstone, and bindstone. The most frequent fossilised components found in the Mishrif Formation are rudists, benthic foraminifera, echinoderms, burrows molluscs, and algae. According to the microfacies and analysed wireline log data, the sequence stratigraphy of the studied formation is composed of two regression cycles. Five parasequences of transgressive–regressive cycles make up the depositional sequence of the Mishrif Formation. The standard depositional environments seem to demonstrate a gradual regression, beginning with a short period of the outer ramp, then a steady period of the mid-ramp, and ending in the intertidal environment. Additionally, the study recorded two regional maximum flooding surfaces: K-135 and K-140. The former is present in the lowermost part of the formation, while the other lies in the middle. This study shows a close relationship between facies (environments) and hydrocarbon accumulation. The increased accumulation focuses on the lower part of the studied formation, and seems to be lower in the upper part of the formation as a result of changes in the environment of deposition.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 61-71"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000558/pdfft?md5=b7829dc31c4d20ed554c701bb0260ce3&pid=1-s2.0-S2096249523000558-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44273031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a phenomenological model to simulate single and mixed scale formation during flow in porous media: Coupling a salt precipitation model with an ion transport equation under dynamic conditions","authors":"Erfan Hosseini ,&nbsp;Dana Mohammad Nazar ,&nbsp;Negar Hosseini ,&nbsp;Mohammad Sarmadivaleh","doi":"10.1016/j.ptlrs.2023.09.003","DOIUrl":"10.1016/j.ptlrs.2023.09.003","url":null,"abstract":"<div><p>Water flooding and pressure maintenance are recommended to improve oil recovery practices after low recovery of petroleum reservoirs occurs during primary production. Salt crystal formation is a frequent occurrence when using these techniques. Several experimental, numerical, and theoretical studies have been done on the mechanisms underlying scaling and permeability reduction in porous media; however, there has not been a satisfactory model developed. This study developed a phenomenological model to predict formation damage caused by salt deposition. Compared with existing models, which provide a scaling tendency, the proposed model predicts the profile of scale deposition. The salt precipitation model simulates reactive fluid flow through porous media. A thermodynamic, kinetic, and flow hydrodynamic model was developed and coupled with the ion transport equation to describe the movement of ions. Further, a set of carefully designed dynamic experiments were conducted and the data were compared with the model predictions. Model forecasts and experimental data were observed to have an average absolute error (AAE) ranging from 0.68% to 5.94%, which indicates the model's suitability.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 17-36"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000686/pdfft?md5=be6fd24a8e761a29bbb572b023391cac&pid=1-s2.0-S2096249523000686-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135427716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of the ecological state of haplic chernozem contaminated by oil, fuel oil and gasoline after remediation","authors":"Anna Ruseva,&nbsp;Tatiana Minnikova,&nbsp;Sergey Kolesnikov,&nbsp;Dmitry Trufanov,&nbsp;Nikita Minin,&nbsp;Sofya Revina,&nbsp;Vladimir Gayvoronsky","doi":"10.1016/j.ptlrs.2023.03.002","DOIUrl":"10.1016/j.ptlrs.2023.03.002","url":null,"abstract":"<div><p>The intensive use of petroleum hydrocarbon products has made them priority environmental pollutants. When petroleum hydrocarbons enter the soil, a change in physical, chemical, and biological properties is observed. The natural restoration of oil-contaminated soils is a lengthy process; therefore, remediation is often required. The aim of this study is to assess the change in the ecological state of haplic chernozem soil contaminated with oil, fuel oil, and gasoline after remediation. The indicators of soil biological activity, such as phytotoxicity (germination, length of shoots and roots), the activity of oxidoreductase enzymes (catalase and dehydrogenases), and the total number of bacteria were studied. The effects of nitroammophoska fertilizer, sodium humate, biochar, and the biofertilizer “Baikal EM-1” on the ecological state of soils contaminated with oil, fuel oil, and gasoline were studied. Pollution with oil, fuel oil, and gasoline decreased the values of all biological indicators. The most sensitive indicator was the length of radish roots in soils polluted with oil, gasoline, and fuel oil after remediation with nitroammophoska and Baikal EM-1 addition. The length of roots was the most sensitive indicator when remediation was performed with biochar and sodium humate added to soil contaminated with oil and gasoline, and with contamination of haplic chernozem soil with fuel oil, the total number of bacteria was the most sensitive indicator. The most effective ameliorant to phytotoxicity indicators for oil pollution was a 1 D dose of biochar, for fuel oil it was 1 D biochar and 2 D sodium humate, and for gasoline it was a 2 D dose of biochar and Baikal EM-1. All ameliorants at most of the studied doses increased dehydrogenase activity, but increased catalase activity only in some cases. An increase in the total number of bacteria in oil-contaminated soils was promoted by biochar and nitroammophoska at a dose of 2 D. Nitroammophoska was the most effective in ameliorant in soils contaminated with fuel oil; in soils polluted with gasoline, all doses of ameliorant increased the number of bacteria equally. The stimulating effect of ameliorants on biological activity of oil-contaminated haplic chernozem were in the following sequence: nitroammophoska &gt; biochar &gt; sodium humate &gt; Baikal EM-1. The 2 D biochar dose was most effective. The stimulation of biological indicators by ameliorants when soil was contaminated with fuel oil were in the following sequence: biochar &gt; Baikal EM-1 &gt; sodium humate &gt; nitroammophoska. The same sequence of ameliorant stimulation was observed in soil polluted with gasoline. The results of this study can be used to biodiagnose the ecological state of oil-contaminated soils after remediation.</p></div>","PeriodicalId":19756,"journal":{"name":"Petroleum Research","volume":"9 1","pages":"Pages 155-164"},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2096249523000157/pdfft?md5=01504ba86f8969c040577217f1c7a10e&pid=1-s2.0-S2096249523000157-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135509829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}