Dynamic conditions and processes of three-dimensional accumulation of Sinian-Permian natural gas in Penglai gas area, central Sichuan Basin, SW China
April 2026
Considering the complexities of gas-water relationships in the gas reservoirs, unclear natural gas distribution and difficult exploration expansion of the Sinian–Permian natural gas in the Penglai gas...
Key technologies for efficient and stable production through intelligent zonal fine water injection in Qinghai Oilfield, NW China
April 2026
In response to the unsatisfactory water injection performance in Qinghai Oilfield caused by complex reservoir geological conditions, the fourth-generation cable-controlled zonal water injection technology...
Structural classification of Ordovician paleokarst conduits and intelligent quantitative prediction of filling degree in Tahe Oilfield, NW China
April 2026
Based on 3D seismic, logging, and core data from the Tahe Oilfield, Tarim Basin, this study carried out logging-based identification of cave filling facies in drilled Ordovician paleokarst conduits...
Experimental study on mechanism of inter-well steam channeling and steam channeling control capability of multicomponent thermal composite system in difficult- to-produce heavy oil reservoirs
April 2026
Taking typical difficult-to-produce heavy oil reservoirs as the research object, a multi-scale physical simulation experimental device for heavy oil thermal recovery and corresponding similarity criteria...
Hydrocarbon enrichment patterns and exploration targets in the Paleogene Liushagang Formation, Wushi Sag, Beibuwan Basin, China
April 2026
The Paleogene Liushagang Formation in the Wushi Sag of the Beibuwan Basin is characterized by dispersed hydrocarbon distribution, small-scale residual exploration targets and large burial depth. Based...
Internal architecture characterization of carbonate reservoirs and its geological significance for reservoir development: A case study of Cretaceous Main Mishrif Formation in H oilfield, the Middle East
April 2026
This study investigates the strong heterogeneity and complex internal architecture of carbonate reservoirs, using the Cretaceous Main Mishrif Formation in the Middle East as an example. A multi-scale...
Hydrocarbon accumulation characteristics and exploration progress of the Triassic Jiucaiyuan Formation in the eastern Fukang Sag, Junggar Basin, NW China
April 2026
Based on data from drilling, logging, seismic surveys and tests, a systematic study was conducted on the petroleum geological characteristics and hydrocarbon accumulation features/models of the Triassic...
Dynamic evolution mechanism of petrophysical properties in shale reservoirs and its petroleum geological significance: A case study of the Cretaceous Lower Eagle Ford Formation, Gulf Coast Basin, USA
April 2026
Based on test data, production performance data, logging data and seismic data of shale samples from the Cretaceous Lower Eagle Ford Formation in the Gulf Coast Basin, USA, methods for determining organic...
Thermo-mechanical damage mechanisms of heterogeneous granite under plasma jet
April 2026
This study establishes a one-way finite element method-discrete element method (FEM-DEM) coupling numerical framework to dynamically simulate the thermal damage and crack evolution of heterogeneous...
Connotation, key issues, and future development of the new-generation volume stimulation technology
April 2026
This paper systematically reviews the development history and generational characteristics of multi-stage fracturing technology in horizontal wells and defines the connotation and essence of the new-generation...
Tectonic differentiation of basins in the northern South China Sea and its control on hydrocarbon accumulation
April 2026
Based on seismic data, well log data, and analyses of hydrocarbon accumulation elements in typical oil and gas fields, this study systematically investigates the tectonic differentiation and its control...
A prediction method for proppant embedment depth in artificial fractures of hydrate reservoirs
April 2026
Given the absence of a prediction method for proppant embedment depth in artificial fractures of hydrate reservoirs, this study employs a hypoplastic constitutive model to quantitatively evaluate the...
Concept, technology generation classification and field practices of enhanced gas recovery
April 2026
Starting from the first principle thinking, this study systematically reviews the development mechanisms of gas reservoirs and proposes the development concept of “full life cycle enhanced gas recovery...
Near-source exploration progress and reflections of marine gas-bearing system in the Ordovician carbonate-gypsum-salt rock strata in the Ordos Basin, NW China
April 2026
Against the bottleneck issues in the Ordovician subsalt marine gas-bearing system of the Ordos Basin, including doubtful quantity of gas generated by low-abundance source rocks, and unclear gas accumulation...
Perforation optimization of Gulong shale oil reservoirs based on near-wellbore fracture morphology control, Songliao Basin, NE China
April 2026
In response to the problems such as complex near-wellbore fractures, difficult far-wellbore fracture propagation, and limited stimulated reservoir volume (SRV) caused by the “thousand-layer thin pancakes”...
Components and stable carbon isotopic fractionation mechanisms of over-mature coal-derived gas in the Daji gas field, Ordos Basin, NW China
April 2026
Based on the natural gas composition and stable carbon isotope data from the Upper Paleozoic tight sandstone gas in the Daji gas field, Ordos Basin, and through a comparative analysis of the geochemical...
Reservoir types and reservoir-forming differentiation of onlap-type carbonate-evaporite paragenetic assemblages: A case study of the second member of the Ordovician Majiagou Formation in the central-eastern Ordos Basin, NW China
April 2026
Based on drilling core, thin section, physical property and logging data, taking the second member of the Ordovician Majiagou Formation (Ma 2 Member) in the Ordos Basin as an example, this paper discusses...
Dolomitization controlled by geological events during the critical tectonic transition of the Tethyan domain: A case study from the Permian Maokou Formation in eastern Sichuan Basin, SW China
April 2026
Focusing on the dolostones within the Permian Maokou Formation in eastern Sichuan Basin, this study integrates petrographic observation, geochemical analysis and in situ U-Pb dating to constrain the...
Reworking and reservoir-forming effects of grain shoals in a carbonate platform affected by multi-phase storm events: A case study of Middle–Upper Cambrian Xixiangchi Group in central–southern Sichuan Basin, SW China
April 2026
Taking the Middle–Upper Cambrian Xixiangchi Group in the central–southern Sichuan Basin as an example, this study investigates the sedimentary characteristics and evolutionary history of tempestites...
Phased array electromagnetic wellbore detection technology
April 2026
Traditional wellbore detection technologies face limitations such as low detection efficiency, poor accuracy, unsuitability for unconventional oil/gas well fracturing operations, and incomplete coverage...
Ultra-high-temperature resistant water-based drilling fluid technology for ten-kilometer ultra-deep wells
February 2026
Two types of ultra-high-temperature resistant water-based drilling fluid additives were designed and developed: an ultra-high- temperature resistant salt-tolerant polymer fluid loss reducer, and an...
Major breakthroughs and significance of risk exploration for tight oil in Fuyu pay zone in the deep area of Gulong Sag, northern Songliao Basin, China
February 2026
The concurrent exploration of shale oil wells in the Gulong Sag of the Songliao Basin has uncovered promising hydrocarbon shows in the Fuyu pay zone of the Lower Cretaceous Quantou Formation. To assess...
Orderly hydrocarbon accumulation pattern in passive continental margin basins on both sides of the South Atlantic
February 2026
Based on the plate tectonics theory, the sedimentary environment of paleotectonics along the passive continental margins on both sides of the South Atlantic Ocean was reconstructed using the paleomagnetic,...
Staged-cumulative charging and differential accumulation of continental shale oil: A case study of Permian Lucaogou Formation shale oil in Junggar Basin, NW China
February 2026
In the Jimusaer Sag of the Junggar Basin, crude oils from the upper and lower sweet-spot intervals of the Permian Lucaogou Formation display a pronounced “light-heavy reversal” in oil properties that...
Key scientific issues and research progress in development of shale oil in Jiyang Depression, Bohai Bay Basin, China
February 2026
Centering on the critical bottlenecks in the development of shale oil in the Jiyang Depression of Shengli Oilfield, key scientific and engineering issues are proposed in aspects such as the storage...