scholarly journals Geological conditions and gas-bearing evaluation of the Niutitang Formation shale in the Xixiang–Zhenba area, China

2020 ◽  
Vol 73 (1) ◽  
pp. 49-58
Author(s):  
Qing Xie ◽  
Feng Xu ◽  
Ning Wang ◽  
Zhen Yang
Keyword(s):  
Geological Conditions ◽  
Niutitang Formation ◽  
Gas Bearing

Coalbed Methane (CBM) Project Enrichment Area and Economic Evaluation

2013 ◽  
Vol 772 ◽  
pp. 776-780
Author(s):  
Jin Shan Li ◽  
Zhong Xue Li ◽  
Bing Hui Zu
Keyword(s):  
Economic Evaluation ◽  
Coalbed Methane ◽  
Relative Concentration ◽  
Rock Properties ◽  
Coal Bed ◽  
Benefit Evaluation ◽  
Geological Conditions ◽  
Unconventional Natural Gas ◽  
Coal Rock ◽  
Gas Bearing

Coalbed gas, also called coalbed methane gas, is a kind of unconventional natural gas located in coal and rocks, coexisting with coal and its main ingredient are methane. On different levels of structure, coal bed methanes adsorption has partition zonality. The gas-bearing of coal seams has relative concentration in different tectonic units, is known as coalbed methane (CBM) enrichment. Influenced by coal rank, coal, rock properties and various geological conditions and other factors, the enrichment has certain regularity. In the study of the coal bed gas enrichment, coal bed gas enrichment especially refers to coal bed methane enrichment. Economic evaluation is that it may analysis reserves financial feasibility and economical rationality for coal seam to get the best economic benefit evaluation, by various stages in CBM cost and final production and income situation.

Role of abnormally high formation pressures in the distribution of oil-gas bearing content in South Caspian depression

2021 ◽  
pp. 4-9
Author(s):  
A.A. Mammadov ◽  
◽  
G.N. Gahramanov ◽  
G.A. Mammadova ◽  
◽  
...  
Keyword(s):  
Soil Depth ◽  
South Caspian Basin ◽  
Adequate Model ◽  
Oil Reserves ◽  
Geological Conditions ◽  
The World ◽  
Caspian Depression ◽  
Reasonable Choice ◽  
Oil Gas ◽  
Gas Bearing

The paper reviews and compares the state of South Caspian depression to the large oil-gas bearing regions of the world genetically not associated but similar to the major geological factors. Geological data on the development and distribution of abnormally high formation pressures (AHFP) and anomaly ratio in the sections of sedimentary strata in various regions of the world has been analyzed. The appearance of abnormally high formation pressure in different geological conditions within South Caspian depression has been reviewed and compared to the corresponding results of similar basins, on the basis of which an adequate model developed as well. In the context of the fields with AHFP within South Caspian basin, it is shown that the significant amount of hydrocarbon reserves may be associated with AHFP zones. The paper presents a brief analysis of views development on the regulations of the distribution of hydrocarbon accumulations in the soil depth. Based on the graphic materials and mathematical statistics, the inequality of distribution of oil reserves on the territory of mentioned basins is justified. Therefore, data analysis on geobaric characteristics of perspective structures, particularly, in deep water zones of SCB, which is top priority for conducting exploration survey may contribute to more reasonable choice.

Engineering-Geological Studies Of The Territory, Soils Of Foundation And Foundations Of The Architectural Monument Of The "Melnikov’s House" In Moscow

2019 ◽  
pp. 41-51
Keyword(s):  
Working Condition ◽  
Overlying Water ◽  
North East ◽  
The North ◽  
Geological Processes ◽  
Architectural Monument ◽  
Geological Conditions ◽  
Zone Of Influence ◽  
Complex Engineering ◽  
Building Engineering

On the basis of engineering and design surveys of the building, engineering-geological and geophysical studies of the soils of the territory conducted by the article authors, as well as with due regard for the results of studies conducted on this territory by other authors, the features of the foundations, soils of their foundation and engineering-geological conditions of the territory of the Melnikov House are established. It is shown that the Melnikov house is located under complex engineering-geological conditions on the territory of high geological risk, in the zone of influence of tectonic disturbance. To the North of the area there is a zone of intersection of the observed disturbance with a larger disturbance that can have an impact on geological processes. To the North-East of the site of the Melnikov House, a sharp immersion of the roof of carbon deposits was revealed. It promotes groundwater seepage into limestone of the carbonate strata from overlying water-bearing sands and activation of processes of suffusion removal and sinkhole phenomena of the soil. The surveyed area is assessed as potentially karst-hazardous and adjacent to it from the North-East territory as karst-dangerous. In this regard any construction on the adjacent territory can provoke activation of sinkhole phenomena on the surface. The foundations of the building are basically in working condition. Existing defects can be eliminated during repair. The foundation soils mainly have sufficient bearing capacity. Areas of the base with bulk soil can be reinforced. However, when developing a project for the reconstruction of the building and its territory, it should be taken into account that the design of the Melnikov House does not provide for its operation on the loads at the formation of sinkholes.

Sign in / Sign up

Export Citation Format

Share Document