Abstract St1 Deep Heat Project with its two deep wells extending to 6.2 - 6.4 km depth is the world’s deepest industrial geothermal energy project. The aim build an EGS (enhanced system) at of about 5 6 km. project a pilot aiming exploring technical and economic feasibility in crystalline rock conditions Finland for production thermal power district heating network. Due demands heating, produce...

At present, a significant part of oil is extracted from difficult-to-develop reservoirs with low permeability. Hydraulic fracturing one the most important methods production stimulation. Scientific articles do not describe connections between flow-rate in well and change pressure hydraulic fracture or changing fracture, except some cases constant fluid-flow production. We obtained both exact an...

Coal seam permeability is one of the key factors influencing gas extraction efficiency, which great significance to reduce coal and dynamic disasters in gassy mines. Hydraulic slotting technique an effective method stimulate reservoir, but selection parameters has impact on efficiency. For this reason, hydraulic model was established by using FLAC3D software analyze stress distribution before a...

We present an integrated study of multi-stage hydraulic fracture stimulation of two parallel horizontal wells in the Bakken formation in the Williston Basin, North Dakota. There are two distinct parts of this study: development of a geomechanical model for the study area, and analysis of the microseismic and hydraulic fracturing data. Despite the limited amount of well log data available, we es...

An integrated analysis of fracture interference revealed that hydraulic fracture system damage was, most likely, due to stimulation fluid flooding, into depleted fracture systems around parent wells, resulting in a reduction in the effective fracture area. The team proposed a number of options to mitigate the impact of fracture interference, including refracturing the existing producing well wi...

Application of Microseismic Imaging to Improve Shallow Hydraulic Fractures The Stripper Well Consortium, a group with a mission to foster and transfer technologies that can help improve production from the nation’s many stripper wells, funded in part a project that combined a series of technical disciplines in an effort to improve stimulation effectiveness in shallow Devonian age reservoirs in ...

Sediment erosion not only reduces efficiency and life of hydropower turbines but also causes problems in operation and maintenance. Several factors are responsible for this erosion in hydro turbine components. This paper presents the sediment erosion types in hydraulic turbines and their components based upon an extensive literature review and the field observation at Cahua hydropower plant, Pe...

Hydraulic fracturing (fracking) has been used extensively in the US and Canada since the 1950s and offers the potential for significant new sources of oil and gas supply. Numerous other countries around the world (including the UK, Germany, China, South Africa, Australia and Argentina) are now giving serious consideration to sanctioning the technique to provide additional security over the futu...

The term ‘Unconventional Reservoirs’ is used in the oil and gas industry for hydrocarbon reservoirs that have very low permeability in the magnitude of microdarcy (μd) and therefore rely on artificially introducing pathways for fluids and gases, commonly by using hydraulic fracturing techniques, to enable economic production. This approach of using fracturing stimulation campaigns is also incre...

Hydraulic fracturing (HF), as a stimulation technique in petroleum engineering, has made possible the oil production from reservoirs with very low permeability. The combination of horizontal drilling and multiple HF with various perforation angles has been widely used to stimulate oil reservoirs for economical productions. Despite the wide use of HF, there are still ambiguous aspects that requi...