Types of Hydrocarbon Migration Pathways and Hydrocarbon Accumulation in the Yakela Fault-Convex, Tarim Basin

2013 ◽  
Vol 295-298 ◽  
pp. 2749-2752
Author(s):  
Xiao Long Luo ◽  
Liang Jie Tang
Keyword(s):  
Tarim Basin ◽  
Hydrocarbon Accumulation ◽  
Lateral Migration ◽  
Long Distance ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Fault Type ◽  
Migration Pathways ◽  
3D Seismic Data ◽  
Field Geology

The existence of abundant hydrocarbon has been discovered in the Yakela Fault-convex, Tarim Basin, after reconstructing and superimposing for several periods. Through interpretation of 3D seismic data up to date, combined with the circumferential field geology, after comprehensively analyzing the characteristics of development on hydrocarbon migration passages and its relationship with hydrocarbon accumulation, this paper holds that it is divided into fault type, unconformity type and carrier bed type in the Yakela fault-convex. The unconformities and the carrier beds are the main lateral migration passage of gas and oil for long distance. The faults are the main vertical migration pathway of hydrocarbon, and the hydrocarbon can arrive at any strata with fault. It is significant to know the hydrocarbon migration pathways in the study area for exploration in future.

The Application Extension of the Four Key Controlling Factors for the Formation of Lithologic Pool in Hongliuquan Area, Qaidam Basin

2012 ◽  
Vol 616-618 ◽  
pp. 441-449
Author(s):  
Kai Chen ◽  
Zhen Liu ◽  
Jun Hui Zhang
Keyword(s):  
Fluid Dynamics ◽  
Formation Process ◽  
Qaidam Basin ◽  
Controlling Factors ◽  
Target Area ◽  
Hydrocarbon Accumulation ◽  
Key Factors ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Dynamic Formation

In order to research the application extension of the viewpoint of the four key factors controlling formation process of lithologic traps, the paper was dissected lithologic reservoir dynamically, mainly analyzing the paleo-fluid dynamics, paleo-hydrocarbon migration pathway, paleo-critical physical properties of reservoirs and paleo-sealing conditions of the traps in formation of hydrocarbon accumulation period. The results show that they recover the limited and most important factors for formation of lithologic traps and come back the formation process of lithologic traps availably, and it also can used to be evaluated low exploration basin dynamically, compositely analyzed key factors controlling formation process of lithologic traps and selected advantaged target area. The application of this methodology indicates that it could be widely used in the dynamic formation of lithologic traps and dynamical evaluation of low exploration basin in Hongliuquan area, Qaidam basin.

Hydrocarbon Accumulation Characteristics in Cretaceous System Hailaer Basin

2013 ◽  
Vol 652-654 ◽  
pp. 2496-2500
Author(s):  
Ying Hua Yu ◽  
Hong Qi Yuan ◽  
Xiang Li Zhong ◽  
Xue Qiu
Keyword(s):  
Detailed Analysis ◽  
Sequence Stratigraphy ◽  
Source Rock ◽  
Seismic Data ◽  
Hydrocarbon Accumulation ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Core Logging ◽  
Regional Source ◽  
Accumulation Characteristics

Based on the sequence stratigraphy principle, reservoir forming elements has been detailed analysis in Cretaceous system of Hailaer basin, by using core, logging and 3-D seismic data. The study shows that the thick mudstone layer in the transgressive systems tract of the super-sequence is good regional source rock .and regional caprock, meanwhile the sandbody developed in transgressive systems tract and highstand systems of the super-sequence become the regional reservoir of depression. The main hydrocarbon migration pathway is uncomformable surface, fault, frame-sandstone, or that the hydrocarbon born in source rock went into the sandstone of sublacustrine fan directly, and then, lithologic reservoirs was formed.

Visualization of vertical hydrocarbon migration in seismic data: Case studies from the Dutch North Sea

2015 ◽  
Vol 3 (3) ◽  
pp. SX21-SX27 ◽  
Author(s):  
David L. Connolly
Keyword(s):  
Neural Network ◽  
North Sea ◽  
Seismic Data ◽  
3D Visualization ◽  
Three Dimensions ◽  
Rock Properties ◽  
Geochemical Data ◽  
Lateral Migration ◽  
Hydrocarbon Migration ◽  
Migration Pathways

Previous 3D visualization studies in seismic data have largely been focused on visualizing reservoir geometry. However, there has been less effort to visualize the vertical hydrocarbon migration pathways, which may provide charge to these reservoirs. Vertical hydrocarbon migration was recognized in normally processed seismic data as vertically aligned zones of chaotic low-amplitude seismic response called gas chimneys, blowout pipes, gas clouds, mud volcanoes, or hydrocarbon-related diagenetic zones based on their morphology, rock properties, and flow mechanism. Because of their diffuse character, they were often difficult to visualize in three dimensions. Thus, a method has been developed to detect these features using a supervised neural network. The result is a “chimney” probability volume. However, not all chimneys detected by this method will represent true hydrocarbon migration. Therefore, the neural network results must be validated by a set of criteria that include (1) pockmarked morphology, (2) tie to shallow direct hydrocarbon indicators, (3) origination from known or suspected source rock interval, (4) correlation with surface geochemical data, and (5) support by basin modeling or well data. Based on these criteria, reliable chimneys can be extracted from the seismic data as 3D geobodies. These chimney geobodies, which represent vertical hydrocarbon migration pathways, can then be superimposed on detected reservoir geobodies, which indicate possible lateral migration pathways and traps. The results can be used to assess hydrocarbon charge efficiency or risk, and top seal risk for identified traps. We investigated a case study from the Dutch North Sea in which chimney processing results exhibited vertical hydrocarbon pathways, originating in the Carboniferous age, which provided the charge to shallow Miocene gas sands and deep Triassic prospects.

Controlling Factors of Hydrocarbon Accumulation and Optimization of Favorable Blocks for Both Flanks of Putaohua Reservoir in Southern Daqing Placanticline

2012 ◽  
Vol 214 ◽  
pp. 23-26
Author(s):  
Dian Shi Xiao ◽  
Hong Li Chen ◽  
Hai Feng Chen
Keyword(s):  
Oil And Gas ◽  
Vertical Movement ◽  
Controlling Factors ◽  
Production Test ◽  
Reverse Fault ◽  
Hydrocarbon Accumulation ◽  
Accumulation Process ◽  
Lateral Migration ◽  
Migration Pathway ◽  
Oil Source

Putaohua reservoir in south of Daqing Placanticline is rich in oil and gas resources. However, the distribution of oil and gas is so complex and the hydrocarbon accumulation process is still unclear by now. Due to low proven reserves, it is not effective to explore the reserves. By use of the logging interpretation and results of production test and together with analysis of the oil and gas distribution and hydrocarbon accumulation process of Putaohua reservoir in south of Daqing Placanticline, the controlling factors of hydrocarbon accumulation in aspects of oil and gas migration pathway, developmental characteristics of sand, local structure etc are discussed in order to optimize potential blocks. The hydrocarbon of Putaohua reservoir in both flanks in south of Daqing Placanticline is from the local K1qn1 source rock. Hydrocarbon migration mainly depends on vertical movement and is supported by short-distance lateral migration; hydrocarbon accumulation is mainly affected by restrictions of oil source fault and high fault block, so that most of hydrocarbon accumulate in the distributary channel and distal bar of reverse faulting footwall, horst, reverse fault and other high fault blocks where are closely adjacent to the oil source faults.

Characteristics of Fault and its Controlling to Hydrocarbon Accumulation in the Yumin Area Northern, Songliao Basin

2013 ◽  
Vol 868 ◽  
pp. 42-45
Author(s):  
Xu Qi
Keyword(s):  
Hydrocarbon Accumulation ◽  
High Angle ◽  
Long Distance ◽  
Hydrocarbon Migration ◽  
Growth Fault ◽  
Boundary Fault ◽  
Basement Fault ◽  
Fault Belt ◽  
Sand Bodies

By using seismic, logging, test oil data, based on the analysis about development characteristics and movement stages of faults, and their control to the deposition of Fuyu oil layer, this paper studied the control of fault belts to hydrocarbon accumulation and characteristics of hydrocarbon migration and accumulation in different fault belts. Study shows that the faults of Fuyu oil layer are made up of middle and long-term faults, which are mainly formed or active in the early deposition of Qingshankou Formation, in a plane the faults are dense to be in belt by the control of basement fault. The distribution of sand bodies and strike of distributary channel of Fuyu oil layer is controlled by basement fault and long-term growth fault, there are three spatial combinations between fault belts and distributary channel:Low-angle intersection, High-angle intersection, and distributary channels long-distance extension along the fault belt in the upside of the boundary fault. The spatial combinations between fault belts and sand bodies determine hydrocarbon migration way and its accumulation in the fault belts: in the eastern hydrocarbon is transported by transporting fault-sand mode, the traps within and besides the fault belt communicated by transporting passage are both accumulated by hydrocarbon, in the western hydrocarbon is transported by boundary fault-sand mode,the oiliness becomes gradually poor from both sides to the inter of fault belt.

scholarly journals Soil Gas Measurements of Radon, CO2 and Hydrocarbon Concentrations as Indicators of Subsurface Hydrocarbon Accumulation and Hydrocarbon Seepage

2021 ◽  
Vol 13 (7) ◽  
pp. 3840
Author(s):  
Marko Cvetković ◽  
Josipa Kapuralić ◽  
Marija Pejić ◽  
Iva Kolenković Močilac ◽  
David Rukavina ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Soil Gas ◽  
Gamma Ray Spectrometry ◽  
Hydrocarbon Accumulation ◽  
Near Surface ◽  
Migration Pathway ◽  
Sampling Points ◽  
Oil Seepage ◽  
Gas Measurements ◽  
Migration Pathways

Soil gas measurements of radon (222Rn), CO2, and hydrocarbon concentrations, as well as gamma-ray spectrometry, were conducted at two separate locations to estimate the measurement results for known locations of hydrocarbon accumulations in the subsurface and oil seepage on the surface. The aim of the study was to confirm the applicability of the method for identifying migration pathways (e.g., faults) and to detect possible seepages of hydrocarbons to the surface as well as to investigate possible health issue potential about the soil gas analysis results. Site A investigations were performed with a large number of sampling points to provide sufficient spatial coverage to capture the influence of subsurface lithologic variability as well as the influence of the migration pathway on the measured parameters. For the investigation of site B, sampling points were positioned to reflect the situation between the area above producing hydrocarbon fields and areas with no confirmed accumulation. The results presented show that it is possible to distinguish the near-surface lithology (gamma-ray spectrometry), characterize the migration pathway, and indicate the area of oil seepage at the surface. Areas above the known hydrocarbon accumulations generally have elevated radon concentrations and detectable heavier hydrocarbons with sporadic methane in soil gas, which contrasts with the lower radon levels and lack of detectable heavier hydrocarbons in soil gas in the area with no confirmed hydrocarbon accumulation in the subsurface.

scholarly journals Paracellular and Transcellular Leukocytes Diapedesis Are Divergent but Interconnected Evolutionary Events

Genes ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 254
Author(s):  
Michel-Edwar Mickael ◽  
Norwin Kubick ◽  
Pavel Klimovich ◽  
Patrick Henckell Flournoy ◽  
Irmina Bieńkowska ◽  
...  
Keyword(s):  
Immune Cell ◽  
Critical Role ◽  
Cellular Polarity ◽  
Endothelial Layer ◽  
Trichoplax Adhaerens ◽  
Migration Pathway ◽  
Two Systems ◽  
Sequence Reconstruction ◽  
Rhoa Protein ◽  
Migration Pathways

Infiltration of the endothelial layer of the blood-brain barrier by leukocytes plays a critical role in health and disease. When passing through the endothelial layer during the diapedesis process lymphocytes can either follow a paracellular route or a transcellular one. There is a debate whether these two processes constitute one mechanism, or they form two evolutionary distinct migration pathways. We used artificial intelligence, phylogenetic analysis, HH search, ancestor sequence reconstruction to investigate further this intriguing question. We found that the two systems share several ancient components, such as RhoA protein that plays a critical role in controlling actin movement in both mechanisms. However, some of the key components differ between these two transmigration processes. CAV1 genes emerged during Trichoplax adhaerens, and it was only reported in transcellular process. Paracellular process is dependent on PECAM1. PECAM1 emerged from FASL5 during Zebrafish divergence. Lastly, both systems employ late divergent genes such as ICAM1 and VECAM1. Taken together, our results suggest that these two systems constitute two different mechanical sensing mechanisms of immune cell infiltrations of the brain, yet these two systems are connected. We postulate that the mechanical properties of the cellular polarity is the main driving force determining the migration pathway. Our analysis indicates that both systems coevolved with immune cells, evolving to a higher level of complexity in association with the evolution of the immune system.

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