Journal of Geotechnology and Energy最新文献

{"title":"Evaluation of the effectiveness of anomalous systems in gas subsidiaries (Case study of Alborz Gas Company)","authors":"F. Ghasemi, Alireza Kazemian Talkhooncheh, M. R. Miri Lavasani","doi":"10.7494/jge.2022.39.3.5025","DOIUrl":"https://doi.org/10.7494/jge.2022.39.3.5025","url":null,"abstract":"An anomaly is an unsafe condition or action that has the potential to cause an accident. These conditions or unsafe practices in gas companies play a very important role in the occurrence of gas leaks and fires. Any unsafe acts can lead to unpleasant incidents for citizens and their homes and property. The aim of this study is to increase the effectiveness of anomalous systems in gas subsidiaries of Alborz province. To conduct this study, Tripod Beta technique to draw a diagram of analysis of gas accidents in homes in Alborz province and hierarchical analysis method was used to assess the risk of injuries, casualties and unintentional house fires. In the first stage, information on gas leaks and fires was collected by reviewing the documents related to the winter events of 2020. Then the sum of the mentioned conditions was studied as a hypothetical model. In the second step, the mentioned model was analyzed using Tripod Beta method and the causes of the accident were determined by the capability of the study method. The obstacles studied were technical safety regulations and the creation of a safe environment. The immediate reason attached to the technical safety regulations was the lack of proper understanding of the valve opening and closing sign. Another immediate reason for creating a safe environment was the lack of safe equipment. The precondition for not understanding the open and closed sign of the valve, lack of sufficient knowledge and the precondition for not using safe equipment, buying unsafe equipment and the hidden reason for lack of sufficient knowledge, lack of training and the hidden reason for buying unsafe equipment was poor economic situation. The results of this study indicated that fire-related conditions are of the utmost importance in assessing the risk of unintentional house fires. Failure to pay attention to safety points while using gas-related equipment, poor condition of the building and more male residents have the most anomalies in causing gas company accidents.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133185464","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":"New “EMIR” Composite for Decolmatage of Oil and Gas Layers After Drilling and During Deposit Exploitation to Increase the Efficiency of Hydrocarbon Production","authors":"Ihor Hubych, Y.Z. Krupskyi, Mykola Pavlyn, Vitalii Feichuk, Vasyl Viitenko","doi":"10.7494/jge.2022.39.2.4985","DOIUrl":"https://doi.org/10.7494/jge.2022.39.2.4985","url":null,"abstract":"A new effective composite “Emir” has been created, which reduces the swelling of clay minerals and cleans the near-well zone of oil and gas-saturated layers from residues of drilling fluid, technical and formational water, resin-asphaltene components and paraffin; thereby restoring the efficiency of the well. The composite has high cleaning characteristics and the ability to foam in the presence of highly mineralized waters (up to 250 g/l), oil products and mineral acids. It also forms both straight and reverse mobile water-oil emulsions, which is important for cleaning oil layers. Based on the results of testing the “Emir” composite in production conditions on gas and oil wells, it was concluded that the use of the “Emir” allows increasing the discharge of hydrocarbon fluids from 20 to 50 % or more. “Emir” composite can also be used on “low-flow” wells clogged or eliminated for geological and technical reasons; this makes it possible to significantly increase recoverable reserves of hydrocarbons in various oil and gas-bearing regions, especially taking into account the small volumes of drilling and the low success rate of searching for new oil and gas fields.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132030534","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":"Drilling Mud Influence on Sandstone Poroelastic Parameters","authors":"D. Knez, H. Rajaoalison, Donatille Nkunzi","doi":"10.7494/jge.2022.39.1.4690","DOIUrl":"https://doi.org/10.7494/jge.2022.39.1.4690","url":null,"abstract":"Abstract: The most critical challenge faced during drilling operations is related to the stability of the well. Additionally, drilling mud plays a crucial role in wellbore stability, as one of its main uses is to support the wellbore wall during the drilling operation. However, ignorance of the effects of drilling mud on the mechanical properties of rock formation can also lead to well failure. The stability of the wellbore is also influenced by the pore pressure during the drilling process. The analysis of changes in rock poroelastic parameters after drilling mud saturation was found to be a useful research regarding the above mentioned. Therefore, the measurement of the dynamic Young’s modulus, Poisson’s ratio and Biot’s coefficient of sandstone samples was carried out to determine their trends of variations with confining pressure in different conditions such as dry, water and drilling mud filtrate saturation. The findings indicate that both the dynamic Young modulus and the Poisson’s ratio of the sandstone rock increased after saturation with water and drilling mud filtrate, while the Biot’s coefficient was reduced. Furthermore, the velocity of the P wave, the dynamic Young modulus and the dynamic Poisson ratio of the sandstone rock were proportional to the confining pressure, while the Biot’s coefficient were inversely proportional to the confining pressure. The results imply that the effective stress calculation can be influenced by changes in poroelastic parameters established from geophysical measurements, and risk management of wellbore stability stability was increased.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123898907","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":"Thermoelectric Properties of Pyrite in the Supra-Ore Level of Gold Mineralization (Ukrainian Carpathians)","authors":"O. Kostyuk","doi":"10.7494/jge.2022.39.1.4668","DOIUrl":"https://doi.org/10.7494/jge.2022.39.1.4668","url":null,"abstract":"The thermoelectric properties of different-aged generations of pyrite from Lostun (Chyvchyny ore region) Tukalo and Kamin-Kliovka (Лостунь, Тукало, Камінь-Кльовка) (Rakhiv ore region) ore manifestations are investigated. The research included traditional geological observations with the collection of samples of various hosting ores, together with mineralogical analysis measuring their reflective power and the thermo electro-motive force of pyrite. Two pyrite generations (pyrite I and pyrite II) have been revealed by the investigation’s results. The crystals belonging to the generations differ morphologically quite vividly (pyrite I has the form of a pentagonal dodecahedron, while pyrite II takes the form of a cube) and have different thermoelectrical properties. Pyrite I testifies to the fact that in the direction from the central parts of crystals with a pentagonal-dodecahedron tendency to its surface, the thermoelectrical properties essentially change. In particular, the central parts of pyrite I crystals have electron conductivity while its faces are mainly hole ones. Such essential changes of the pyrite thermoelectrical properties from the central parts of the crystals to their peripheral ones are probably mostly caused by quantitative changes of element admixtures in the crystalline lattice. However, the pyrite II thermoelectrical properties investigation results testify that this mineral has only hole-conductivity. Thus, in terms of general thermo-e.m.f. (electromagnetic field) as well as selections range, the thermoelectric properties of the pyrite from the Lostun and Tukalo ore manifestations and the Sauliak (Сауляк) auriferous deposit are similar. The comparative character of the pyrite thermoelectric properties from the investigated ore manifestations, the Sauliak deposit and other auriferous deposits testify to the supra-ore level of the gold mineralization in Tukalo and Lostun objects and make it possible to assume that erosion shear of the gold mineralization in Tukalo ore manifestation is similar to the Sauliak deposit erosive shear and is deeper in comparison to the Lostun ore manifestation. ","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124675566","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":"Displacement Efficiency in Tight Sandstone Based on Fractional Flow Curve Using Relative Permeability Data","authors":"A. Khlaifat","doi":"10.7494/jge.2021.38.4.4543","DOIUrl":"https://doi.org/10.7494/jge.2021.38.4.4543","url":null,"abstract":"In tight gas sandstone, relative permeability is an essential special core analysis dynamic test that can be used to estimate injectivity, secondary recovery, production rate, reservoir simulation, residual gas saturation, and effective water management. Having about 65% of hydraulic fracturing fluid not to flow back and stay in the reservoir results in having the tight sandstone gas reservoir to involve multi-phase flow, namely water and gas. During the hydraulic fracturing job both imbibition and forcibly imbibition processes take place while during fracturing fluid cleanup and gas production drainage flow becomes dominant. \u0000The steady state flooding process was used to measure the relative permeability curves for tight sandstone core sample collected from Travis Peak Formation at a depth of 8707 ft. The measurement process involved the performance of a series of steady state experiments with different gas-water injection ratio. The fractional flow curve has been plotted, based on the measured relative permeability, and used to calculate the displacement efficiency for the flow through such type of tight porous media. The measurement showed relatively high irreducible water saturation (31%) and low residual gas saturation (6%). The measured gas relative permeability decreased slowly at a constant rate with increased wetting fluid saturation. The obtained fractional flow curve does not follow the s-shape behavior observed in conventional reservoir. The obtained results showed that displacement efficiency can be enhanced by increasing water viscosity.     ","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125962134","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":"Improvement of mud displacement from the annular space of the borehole in terms of the criterion of selecting washing fluids and pre-flushes","authors":"M. Formela","doi":"10.7494/jge.2021.38.4.4546","DOIUrl":"https://doi.org/10.7494/jge.2021.38.4.4546","url":null,"abstract":"One of the most important steps in drilling the well is cementing the annular space between casing and rock formations. This process is significant because of the stabilization of the well and effectively separation of the consecutive rock horizons. It is required that cementing ensures durable and effective insulation of the rock mass. The complete displacement of the drilling fluid from the annular space is particularly important due to a number of negative phenomena related to its insufficient extrusion. The cement slurry pressed through the annular space displaces the mud but is not able to sufficiently thoroughly remove the residue left behind. The subject of the laboratory research was to check how selected washer affect the efficiency of displacing drilling fluid from the annular space of the borehole. In addition, the tests included the determination of the optimal washing time and the optimal pumping rate of the washing fluid. Moreover, the tests included the determination of the optimal washing time and the optimal pumping rate of the washing fluid.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115528502","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":"Determination of mechanical parameters of salts in the cyclic load processes corresponding to the operation the storage cavern for hydrogen","authors":"K. Polański","doi":"10.7494/jge.2021.38.3.4507","DOIUrl":"https://doi.org/10.7494/jge.2021.38.3.4507","url":null,"abstract":"The paper describes the results of laboratory tests of strength the salt samples made as part of the HESTOR project in order to determine the mechanical parameters of salt. The tests were carried out using the Autolab2000 apparatus which allows to simulate any load cycles. The tests were made by simulating the operation of the hydrogen storage cavern. In order to observe differences in salt behavior depending on the sample medium being stored during the test, gases were supplied: nitrogen, as an analog of natural gas, and helium as a hydrogen analogue.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133006422","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":"New Non-Intrusive Condition Monitoring System Designed to Improve Reliability of the RCD","authors":"K. Machocki, Z. Marhoon, Shaarawi Amjad, O. Sehsah, Tom Dixon, Jamala Mohammad","doi":"10.7494/jge.2021.38.3.4504","DOIUrl":"https://doi.org/10.7494/jge.2021.38.3.4504","url":null,"abstract":"Managed pressure drilling (MPD) is a technology that allows for precise wellbore pressure control, especially in formations of uncertain geomechanics. The rotating control device (RCD) is a crucial part of the MPD equipment but is prone to failure. Therefore, a new condition monitoring system was developed to improve the reliability of RCDs and eliminate their catastrophic failures during MPD jobs. Non-intrusive sensors were selected during the design of this condition monitoring system. Sensors are measuring: vibrations, acoustic emissions, rotation, pipe movement, temperatures, and contamination level in the coolant fluid. The system can display the measurements in real-time to the operator, giving early warnings to prevent the RCD's catastrophic failures during the job. Additionally, the data is recorded to allow further processing and analysis using ML and AI techniques.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117209816","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":"Performance analysis of a horizontal well located in an underground gas storage facility","authors":"Paweł Zyzański","doi":"10.7494/jge.2021.38.2.4358","DOIUrl":"https://doi.org/10.7494/jge.2021.38.2.4358","url":null,"abstract":"Nowadays, energy raw materials, especially environmentally friendly raw materials, are becoming increasingly important. These raw materials include natural gas called the \"blue fuel\". As it is known, natural gas is extracted from deposits located at often great depths by means of both vertical and horizontal drilling.  It is important that both vertical and horizontal wells are characterised by high efficiency in terms of obtaining the highest possible productivity, which will allow to exploit the existing resources of the deposit in the shortest possible time.  \u0000The paper analyses the influence of such factors as reservoir pressure, thickness of reservoir, length of a horizontal section, average permeability of a reservoir, turbulence coefficient and water exponent on the process of lifting a liquid phase during operation of a horizontal well. The calculations were carried out using data concerning exploitation of the \"B\" natural gas field. The calculations were carried out using the \"IHS PERFORM\" computer programme, which is the leading industry software for carrying out analyses of productivity changes in gas wells. The following correlations were used in the horizontal well performance analysis: \u0000- Joshi's correlation for calculating productivity for a horizontal well \u0000- Hagedorn & Brown correlation for determining the course of pressures in a well for two-phase flow, \u0000- Lee, Gonzalez & Eakin correlation for calculating changes in gas viscosity, and \u0000- Dranchuk & Purvis - Robinson correlation for calculation of deviation factor of real gas \"z\". \u0000The results of the calculations are presented in the form of graphs. In the final part of the article, conclusions are given, summarising the results of the analysis. In the further part of the article the author focused on the course of operation of a horizontal well located at an underground gas storage facility.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122840816","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":"Possibility of using a portable multi-gas detector Dräger X-am 8000 for monitoring explosive gases in the area of historical oil and gas mines in the Podkarpackie region.","authors":"M. Maruta","doi":"10.7494/jge.2021.38.2.4352","DOIUrl":"https://doi.org/10.7494/jge.2021.38.2.4352","url":null,"abstract":"The oldest oil basin in the world is located in the Polish Carpathians. Former mines, often abandoned, have become technical monuments. The growing popularity of industrial tourism in the world and in Poland attracts more and more tourists who want to \"find oil\" on their own. In most cases, these are abandoned crude oil and natural gas mines, being in such places is associated with the risk of poisoning, ignition or explosion of escaping gases from unprotected crude oil mines or borehole outlets. The article also points to the heritage of oil mining in the Polish Carpathians and related cultural routes. The author focuses on the issue related to the occurrence of the hazard zone of hydrogen sulphide poisoning or methane explosion in the sites of old oil mines. It presents the possibility of using the mobile multi-gas detector Dräger X-am 8000 as a personal device for monitoring the concentration of gases and vapours considered toxic and / or explosive, such as Methane or Hydrogen Sulfide. It also proposes the use of the Dräger X-am 8000 multi-gas detector, which in combination with the Dräger X-site Live real-time area monitoring module can serve as a mobile system for short- or long-term monitoring of the above-mentioned zones.","PeriodicalId":261652,"journal":{"name":"Journal of Geotechnology and Energy","volume":"92 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126130335","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}