Optimization of target layer selection in shale gas horizontal wells by Peirong ZHAO

“…The accurate identification of "sweet spots" and the optimization of target layer selection in horizontal wells are so significant that they decide the final production of each shale gas well. A case study of target layer selection in the Jiaoshiba block of Fuling Gas Field shows that detailed research is the basis for identifying the target window, and the integration of geological and engineering technologies is the key to accurately identify the target layers. …”
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Probabilistic Oil and Gas Production Forecasting using Machine Learning by Andrais, Robert

“…This thesis improves oil- and gas-well profitability by quantifying the uncertainty of the production-forecasting process, using probabilistic machine learning (ML) techniques. …”
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Decommissioning: another critical challenge for energy transitions by Partridge Tristan, Barandiaran Javiera, Triozzi Nick, Toni Valtierra Vanessa

“…In the US alone, at least 14 million people live within a mile of an abandoned oil or gas well, creating pollution that is concentrated among low-income areas and communities of colour. …”
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Experimental study on characteristics of acoustic emission for coal containing gas damaged evolution under loading by NIU Yue, LI Zhonghui, WANG Honghao, WANG Jiali, LIU Shuaijie, YIN Shan, KONG Yanhui, HONG Sen

“…The change trend of pulse number and energy of acoustic emission is consistent with the load value, which can reflect damage degree of coal containing gas well. Based on the coal damaged evolution model of acoustic emission characteristics parameters, change trend of damage value calculated from the acoustic emission pulse number and energy and the actual measured value are basical identical. …”
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Petro-physical analysis of well logs for reservoir evaluation: a case study of Well 1 and 2 of the ‘Ictorian’ field in the Niger Delta Basin by G.E. Maju-Oyovwikowhe, V.K. Njoku

“…Well 1 and 2 both had hydrocarbon reservoir bearing gas. Well 1 had Gas Water contact at 2497m and 2964m, while well 2 had Gas water Contacts at 1739m and 2510m. …”
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Prediction of pressure between packers of staged fracturing pipe strings in high-pressure deep wells and its application by Fuxiang Zhang, Liangliang Ding, Xiangtong Yang

“…Taking a high-pressure gas well in Tarim Oilfield for example, the inter-packer annular pressure prediction was conducted, on which, the mechanical analysis on packers and working strings was carried out. …”
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The Fault Tree Analysis of Causes of the Welded Pipes Failures in Exploitation by Ruzica Nikolic, Dusan Arsic, Aleksandra Arsic, Zivce Sarkocevic, Dragan Cvetkovic, Branislav Hadzima

“…Premature failure or damage of parts and components of the oil and gas well piping, as well as pipelines for transport of oil and gas, are generally caused by the simultaneous influence of a large number of technological, metallurgical, structural and exploitation factors. …”
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Results of cement-to-rock contact study by N. I. Nikolaev, Lyu Khaoya

“…The paper focuses on the problems of oil and gas well cementation. It has been established that the main reason why formation fluids leak behind the casing is due to poor isolation of the annulus caused by incomplete cleaning of the filter cake, which results in weak or absent adhesion between the cement and the rock. …”
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Experimental Investigation of Nano Alumina and Nano Silica on Strength and Consistency of Oil Well Cement by Hassan Abdul Hadi, Hassan Abdul Ameer

“…In oil and gas well cementing, a strong cement sheath is wanted to insure long-term safety of the wells. …”
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A comprehensive analysis of carbonate matrix acidizing using viscoelastic diverting acid system in a gas field by Mostafa Keihani Kamal, Javad Mahdavi Kalatehno, Peyman Daneshfar, Fatemeh Yousefmarzi

“…Abstract This paper explores matrix acidizing, a method to enhance well productivity by injecting acid into the formation to dissolve damage or create flow channels. Focusing on gas well acidizing, it introduces a groundbreaking three-stage approach with hydrochloric acid (HCl) and viscoelastic diverting acid (VDA). …”
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Prediction of drill penetration rate in drilling oil wells using mathematical and neurofuzzy modeling methods by Hassan Ghanitoos, Masoud Goharimanesh, Aliakbar Akbari

“…The sustainability of oil and gas well drilling operations is a vital issue from an economic and safety point of view. …”
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The Influence of Temperature on Degradation of Oil and Gas Tubing Made of L80-1 Steel by Dariusz Bęben

“…Corrosion at higher temperatures is an important aspect when extracting natural gas from a field with high temperatures (120 °C in the Lubiatow deposit and 180 °C in the gas well in Kutno). Water in the reservoir is often in the form of steam, with a pressure of about 25 MPa; as a result of its extraction, it cools down, which causes condensation. …”
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Review on Mechanism, Prediction, and Remediation of Salt Deposition in Gas Production Wells by Duocai Wang, Zhongxin Ren, Haichuan Li, Ping Jiang, Jian Wang, Yanwei Zhu, Ziheng Zhu, Jingwei Huang

“…Finally, this work summarizes three different techniques for salt deposition remediation in gas wells, including cold-water removal, hot-water washing, and chemical salt prevention. …”
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Experimental Investigation of Nano Alumina and Nano Silica on Strength and Consistency of Oil Well Cement by Hassan Abdul Hadi, Dr, Hassan Abdul Ameer, MSc student

“…In oil and gas well cementing, a strong cement sheath is wanted to insure long-term safety of the wells. …”
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Problems in the wellbore integrity of a shale gas horizontal well and corresponding countermeasures by Zhonglan Tian, Lin Shi, Lei Qiao

“…In the Changning–Weiyuan national shale gas demonstration area, SW Sichuan Basin, the wellbore integrity damage occurs in some shale gas wells and has direct effect on the gas production rate of single shale gas horizontal well. …”
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Stress-Dependent Permeability of Naturally Micro-Fractured Shale by Jianglin He, Jian Wang, Qian Yu, Chaojie Cheng, Harald Milsch

“…The cores originated from a shale gas well (HD-1) drilled at the Huayingshan anticline in the eastern Sichuan Basin. …”
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Geological characteristics and optimization of favorable areas in the upper gas reservoir of Jiaoshiba block in the Fuling Shale Gas Field, Sichuan Basin by Zhiguo SHU, Jin WANG

“…In addition, the study revealed that organic matter abundance, porosity and preservation conditions are the main factors affecting shale gas enrichment in the upper gas layer of Jiaoshiba block, while burial depth, crustal stress and the extent of natural fracture development are the main factors controlling gas well production in the upper gas reservoir.…”
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Some research advances in well engineering technology for unconventional hydrocarbon by Deli Gao

“…Aiming at unconventional oil & gas well engineering problems such as large cluster well design, single trip drilling operation, downhole radiofrequency heating, efficient exploitation of coalbed methane, and so on, this article analyzes the related research progress briefly at home and abroad, and focuses on the research results of the author's team. …”
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Well-controlled area seepage law and disturbance degree between production wells prediction of tight gas reservoir: a case study of Sulige gas field, Ordos Basin, NW China by Feng Xiao, Wen Xu, Jinkai Wang

“…Abstract Based on a sum of well test interpretation analysis, the flowage characteristics of the gas in reservoir were analyzed from physical parameters and double-logarithm curve characteristics of gas wells. The result showed that the permeability of gas well-fracturing area is greatly improved, which is the main area to provide productivity. …”
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Experimental study on the effect of quaternary ammonium salt + monoethylene glycol compound to methane hydrate agglomeration in oil-water system by Qibin Zhao, Hao Liang

“…Natural gas hydrate has been a critical risk to the safety of offshore oil and gas well test and subsea transportation. Herein, the effect of three quaternary ammonium salt (QAS) surfactants with monoethylene glycol (MEG) to methane hydrate agglomeration in water-oil system was experimentally studied by a rocking cell. …”
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