The role of new energy in carbon neutral
April 2021
Carbon dioxide is an important medium of the global carbon cycle, and has the dual properties of realizing the conversion of organic matter in the ecosystem and causing the greenhouse effect. The fixed...
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Application and development trend of artificial intelligence in petroleum exploration and development
February 2021
Aiming at the actual demands of petroleum exploration and development, this paper describes the research progress and application of artificial intelligence (AI) in petroleum exploration and development,...
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Relationships of the iC4/nC4 and iC5/nC5 ratios with maturity of coal-derived gases of Triassic Xujiahe Formation in central Sichuan Basin, SW China
June 2019
The original gas reservoirs in different areas and different layers of the Triassic Xujiahe Formation in the central Sichuan Basin are studied to reveal the relationships of iC4/nC4 and iC5/nC5 ratios...
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A comprehensive review of polyacrylamide polymer gels for conformance control
August 2015
Polymer gels have been designed and successfully applied to improve sweep efficiency and to reduce excessive water production by minimizing reservoir heterogeneity. Based on their compositions and application...
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Earth energy evolution, human development and carbon neutral strategy
April 2022
Energy is the basis of human development and the impetus of society progress. There are three sources of energy: energy of celestial body outside the Earth, the Earth energy and energy of interaction...
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Progress and prospects of horizontal well fracturing technology for shale oil and gas reservoirs
February 2022
By systematically summarizing horizontal well fracturing technology abroad for shale oil and gas reservoirs since the “13th Five-Year Plan”, this article elaborates new horizontal well fracturing features...
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Trend and progress in global oil and gas exploration
August 2013
Major progress achieved in oil and gas exploration in terms of reserves, number of oil and gas fields and discovery of large oilfields were analyzed, trend and progress of global oil and gas exploration...
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Generation mechanism and control measures for H2S in oil wells, Liaohe Oilfield
June 2008
H2S may be generated by the reactions of sulphur-alcohol and sulfoether in the crude oil or by the sulfur-bearing minerals in the formation at high temperatures. Sulphate can also be reduced to H2S...
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Comprehensive review of water shutoff methods for horizontal wells
December 2017
This paper provides a comprehensive review of the water control techniques that have been applied in horizontal wells and presents the water control methods for wells of different completion types....
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Optimization of well pad design and drilling – well clustering
June 2019
A model accounting for more than 30 parameters of drilling projects, and a computer program to enumerate groupings of the wells of a pad with consequent calculations of technical-economic characteristics,...
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Synthetic well logs generation via Recurrent Neural Networks
August 2018
To supplement missing logging information without increasing economic cost, a machine learning method to generate synthetic well logs from the existing log data was presented, and the experimental verification...
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Assessment of global unconventional oil and gas resources
December 2016
This paper evaluates the recoverable unconventional oil and gas resources around the world, reveals main controlling factors and potential regions for the rich accumulation of unconventional oil and...
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Progress and prospects of oil and gas production engineering technology in China
June 2022
This paper summarizes the important progress in the field of oil and gas production engineering during the “Thirteenth Five-Year Plan” period of China, analyzes the challenges faced by the current oil...
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Environmental impacts of hydraulic fracturing in shale gas development in the United States
December 2015
Through comprehensive investigation of the environmental issues in shale gas development in the US, the environmental impacts of hydraulic fracturing in shale gas development are summarized to provide...
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Wellbore stability analysis to determine the safe mud weight window for sandstone layers
October 2019
The wellbore stability of a vertical well through the sandstone reservoir layers of the Asmari oil-bearing formation in south-west Iran is investigated. The safe drilling-fluid density range for maintaining...
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Research status and development directions of intelligent drilling fluid technologies
June 2022
By reviewing the current status of drilling fluid technologies with primary intelligence features at home and abroad, the development background and intelligent response mechanisms of drilling fluid...
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Progress and development directions of shale oil reservoir stimulation technology of China National Petroleum Corporation
October 2021
By reviewing the development history of shale oil reservoir stimulation technology of PetroChina Company Limited (PetroChina), we have systematically summarized the main progress of shale oil reservoir...
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Spudcan bearing capacity calculation of the offshore jack-up drilling platform during the preloading process
October 2011
To predict the penetration depth of the offshore jack-up drilling platform during the preloading process, the fluid-solid coupling theory was introduced to establish the finite element model of the...
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A systematic step-wise approach for shale gas assessment in undeveloped prospects: A case study of Lurestan shale gas area in Iran
June 2022
Key parameters and evaluation methods of shale gas show that it is not possible to guarantee the commercial and economic development of shale gas by sorting out geological sweet spots only according...
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Application of nanotechnology in petroleum exploration and development
December 2016
Combined with the actual demand of oil and gas exploration and development, this paper summarizes the research progress and application of nanotechnology in various fields of petroleum exploration and...
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Distribution and potential of global oil and gas resources
August 2018
Using conventional and unconventional oil and gas resource evaluation methods with play as a unit, this study evaluates the oil and gas geology and resource potential of conventional oil and gas resources...
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Enhanced oil recovery mechanisms of polymer flooding in a heterogeneous oil reservoir
February 2021
Taking reservoir rocks and fluids of the Daqing, Dagang and Changqing oilfields as research objects, the EOR mechanisms and technical approach of polymer flooding were discussed. By comparing the displacement...
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Methodology for estimation of CO2 storage capacity in reservoirs
April 2009
The CO2 storage in reservoirs is one of the most effective ways of reducing the greenhouse gas emission, which is based on the mechanisms of structural and stratigraphic trapping, residual gas trapping,...
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Gas condensate reservoirs: Characterization and calculation of dew-point pressure
October 2020
A large data bank of more than 700 gas-condensate samples collected from literature and experiments was established. On this basis, empirical correlations and equations of state commonly used to calculate...
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New understandings on gas accumulation and major exploration breakthroughs in subsalt Ma 4 Member of Ordovician Majiagou Formation, Ordos Basin, NW China
June 2022
Geological conditions and main controlling factors of gas accumulation in subsalt Ma 4 Member of Ordovician Majiagou Formation are examined based on large amounts of drilling, logging and seismic data....
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