Subsurface imaging

Identification of fracture zone is a challenging task without the image log data. There are many brownfields around the world where the image log has not been acquired; therefore, there must be an alternative way of fracture identification. In this paper, a conventional log response technique for fracture delineation has been discussed. The study area lies in the Upper Indus Basin of Pakistan, which is sub-divided into the Kohat and Potwar basins. Minwal-X-1 of Joya Mair area, which lies in the Potwar Basin, is selected for this purpose.

15p tanmocphong 29-01-2022 34 1   Download

The dataset used in this study is the Maui 3D seismic volume from Taranaki basin, offshore New Zealand. A stack of 400 continuous stratigraphic horizons is produced from the Maui RGT model, even for complex areas where classical methods failed to achieve or would take a long time to complete. Integrated with seismic attribute mappings such as RMS amplitude and/or spectral decomposition, the horizon stack enables to navigate the seismic volume in stratigraphic order.

7p trinhthamhodang1220 21-07-2021 16 1   Download

Searching for hydrocarbon reserves in deep subsurface is the main concern of wide community of geophysicists and geoscientists in petroleum industry. Exploration seismology has substantially contributed to finding and developing giant fields worldwide. The technology has evolved from two to three-dimensional method, and later added a fourth dimension for reservoir monitoring.

10p kequaidan1 16-11-2019 26 2   Download

The main objective of this study was to assess the environmental impact of the Nam Son landfill on the subsurface geological structure studied using 3D electrical imaging and self-potential investigations.

8p caygaocaolon1 13-11-2019 6 0   Download

The geology of the Çankırı Basin has been studied using multi-source data including satellite images, aerial photos, gravimetric data and seismic sections, which are subsequently used to generate maps and a 3D model of that part of the basin covered by the seismic sections.

22p vinasaki2711 09-11-2019 12 3   Download

Magnetotelluric surveys (soundings) are a naturalsource electromagnetic (EM) geophysical method that utilizes variations in the Earth’s magnetic field to image subsurface structures. A magnetotelluric sounding was attempted at Weyburn but has not produced results. Consequently, a final assessment of its utility is not available (Monea et al., 2008). Electrical resistance tomography (ERT) is a technique of imaging subsurface electrical conductivity. When deployed in time-lapse mode, it is capable of detecting conductivity changes caused by the injection of CO2.

134p bin_pham 06-02-2013 42 5   Download

Tham khảo sách 'radar technology_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

0p 123859674 30-06-2012 65 16   Download

One of the most important inventions for the development of radars was made by Christian Huelsmeyer in 1904. The German scientist demonstrated the possibility of detecting metallic objects at a distance of a few kilometres. While many basic principles of radar, namely using electromagnetic waves to measure the range, altitude, direction or speed of objects are remained up to now practically unchanged, the user requirements and technologies to realise modern radar systems are highly elaborated....

194p 123859674 30-06-2012 91 23   Download

Tham khảo sách 'new developments in biomedical engineering_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

0p 123859674 30-06-2012 71 9   Download

Diabetes represents a major threat to public health with alarmingly rising trends of incidence and severity in recent years, as it appears to correlate closely with emerging patterns of nutrition/diet and behavior/exercise worldwide. The concentration of blood glucose in healthy human subjects is about 90 mg/dl and defines the state of normoglycaemia. Significant and prolonged deviations from this level may give rise to numerous pathologies with serious and extensive clinical impact that is increasingly recognized by current medical practice....

340p 123859674 30-06-2012 67 8   Download

Tham khảo sách 'biomedical engineering_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

272p 123859674 30-06-2012 90 13   Download

The advent of novel materials for electronics, optoelectronics and nanoelectronics holds the promise for new microelectronic device designs and applications across all fields of science and technology. Furthermore, the increasing sophistication of fabrication processes and techniques used in the semiconductor industry has resulted in the ability to produce circuits of greater complexity at remarkably reduced costs, a trend which has been continuing over the past half-century.

386p 123859674 30-06-2012 65 16   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article An Entropy-Based Propagation Speed Estimation Method for Near-Field Subsurface Radar Imaging

13p sting05 10-02-2012 31 7   Download

Images are central to the task of exploring for and producing oil and gas (hydrocarbons) from the Earth’s subsurface. To understand their utility, one must look at both how hydrocarbons are formed and how we explore for them. Oil and gas (hydrocarbons) are generally found in the pores of sedimentary rocks, such as sandstone or limestone. These rocks are formed by the burial of sediment over millions of years and its subsequent chemical alteration (diagenesis).

31p doroxon 18-08-2010 86 8   Download