These include horizontal boreholes, intersection boreholes and grid-layout boreholes in current coal seams, boreholes through the roof or floor in neighboring coal seams, fracturing zone drainage, buried pipes drainage, and surface drainage aimed at gas in the gob area (Zheng et al. 2013; Pan et al. 2014).
After a well fractured and controlled to open drainage in the sweet spot, conduct pressure recovery test by shutting in well.
Deccan plateau is composed of basalts of Deccan Traps which are fractured and jointed having undulated topography with dendritic-to-sub-dendritic drainage pattern, low-to-moderate drainage density; whereas, alluvial plains constitute gravel, sand silt and clay-sized unconsolidated material over a flat land surface, illustrated by low drainage density with high infiltration rate.
Pressure behaviors and flow regimes of hydraulically fractured horizontal wells are affected by different parameters such as: reservoir drainage area, fracture dimensions, and the penetration ratio either in the vertical direction or in the horizontal plane.
The equation of this straight line is ( t D × P D ′ ) pss = 2 π t DA. (27). 1. Pressure behaviors and flow regimes of hydraulically fractured horizontal wells are affected by different parameters such as: reservoir drainage area, fracture dimensions, and the penetration ratio either in the vertical direction or in the horizontal plane.
Global flow occurs through the fracture network only, while rock matrices and cavities contain the majority of fluid storage and provide fluid drainage to the fractures.
Three distinct flow structures: droplet, mixed and channel flow patterns were observed throughout the drainage process with fracture gap of 0.0127 cm.
For the purpose of gas drainage, mining induced fractures were characterised into various types and each of them was identified in the overburden for appropriate gas drainage design (Yuan 2004).
The dominated flow regimes in this case are the early linear flow which represents the flow from the drainage areas between fractures toward them and the pseudo-steady-state flow which represents the effect of the reservoirs boundary.
In group B we observed 2 cases of hematoma treated with incision and drainage and 2 fractures of the greater trochanter that did not require changes in the surgical procedure, nor any surgical treatment.
