... ABSTRACT Shale gas wells in longwall chain pillars are subject to longwall-induced overburden movements. Longwall mining on either side of the chain pillars can induce deformations in gas well casings. The casing deformations induced by longwall mining has raised the safety concern that casing...

... and shales. Their ensuing hydro-thermo-chemo-mechanical properties affect the performance of near-surface infrastructures (e.g., foundations, pavements, tunnels), hydraulic fracturing and shale gas recovery (Speight, 2013), and the seal capacity for CO 2 geological storage (Kang et al., 2011; Heller...

... al. 2011; Johnson et al. 2018). geologist sedimentary rock upstream oil & gas clastic rock complex reservoir hvfr united states government mudrock shale gas geological subdiscipline formation water high viscosity friction reducer geology fracturing fluid rock type fracturing...

... properties of a shale formation. sedimentary rock clastic rock structural geology wellbore design drilling operation mudrock upstream oil & gas geologist annular pressure drilling complex reservoir hydraulic fracturing shale gas wellbore integrity united states government reservoir...

... modeling & simulation geology hydraulic fracturing reservoir geomechanics fluid dynamics united states government natural fracture simulator reservoir simulator texas fracture network sharma equation technology conference shale gas geological subdiscipline drawdown strategy complex...

... government geologist structural geology mudrock artificial intelligence mudstone upstream oil & gas mineral shale gas log analysis sedimentary rock clastic rock elastic property europe government reservoir geomechanics canada government tensor complex reservoir shale stiffness tensor...

... ABSTRACT Deep shale gas with a burial depth of 3500–5000m became an important area for shale gas development in China. The characteristics of the rock's mechanics and the in situ stress have a significant impact on the drilling and fracturing effects of horizontal wells. Finite element...

... ABSTRACT During the fracturing process of infill wells in the Fuling shale gas reservoir, it was found through real-time monitoring of fracturing that the monitored pressure of the parent well increased to different degrees when each fractured stage of the adjacent infill wells was fractured...

... the borehole, and the more complex macro fractures. Moreover, LN pretreatment can lower fracture initiation pressure actually. The productive findings obtained in this work are expected to provide an alternative for the sustainable development of deep shales resources. INTRODUCTION Deep shale gas resources...

... ABSTRACT Deep shale gas has become an important alternative resource for shale gas development in China, and the number of horizontal wells drilled is increasing year by year. However, the rate of penetration, bottom hole temperature and leakage in horizontal section are seriously restricted...

... sedimentary rock clastic rock fracturing fluid proppant hydraulic fracturing composition drilling operation geological subdiscipline mineral shale gas caney shale fracturing materials silicate clay mineral fracture complex reservoir rock type flow in porous media fines migration reservoir...

... play geologist fracture characterization geology fracture hydraulic fracturing complex reservoir upstream oil & gas united states government shale gas reservoir geomechanics interaction asset and portfolio management modeling & simulation geological subdiscipline propagation...

... ABSTRACT The right of W mineral cover an area of 143.77km 2 . As shale gas horizontal wells are prone to casing deformation by segmental fracturing, the casing deformation rate exceeds 45%, which seriously affects the production capacity construction of shale gas wells in W block. A set...

... ABSTRACT There is abundant normal pressure shale gas resource in China. However, it is hard to acquire commercial breakthroughs because of the relative low initial gas production and rapid decline in normal pressure shale gas play such as Pengshui Block, etc. Normal pressure shale gas play has...

.... Uncemented production casings serve to uncouple longwall-induced deformations and stresses from the production casing. A case study is presented to illustrate the importance of leaving the production casing uncemented. INTRODUCTION Since 2003, over 1,800 unconventional shale gas wells have been drilled...

... ABSTRACT With the development of reservoir stimulation technology, more and more deep shale reservoirs (>4000m) have become the targets of shale gas exploitation. In order to better understand the performance of shale in deep reservoir environment, we carry out a series of high-temperature...

... for fractures to propagate through limestone interlayers is more difficult (Fig. 2). geologist sedimentary rock upstream oil & gas asia government oil shale rock type united states government mudrock hydraulic fracturing clastic rock complex reservoir shale gas reservoir geomechanics...

... in practical drilling. INTRODUCTION The commercial success of shale gas in North America has prompted a global interest in the development of unconventional oil and gas resources, including shale oil and gas, tight oil and gas, and coalbed methane (Ma et al. 2015; Soeder 2018; Wu et al. 2020; Nie et al...

... ABSTRACT The brittle to ductile transition phenomenon in deep shale gas formations is a challenge for hydraulic fracturing and is of interest from both a geological and an engineering perspective. A series of uniaxial and triaxial compressive experiments at increasing confining pressures...

...., 2021c; Sennaoui et al., 2023b). upstream oil & gas oil shale shale gas reservoir geomechanics pore geologist united states government rock type log analysis stiffness parameter anisotropy structural geology mudrock well logging reservoir characterization sedimentary rock...