The effects of operating pressure and ground stress on the seepage parameters (permeability and porosity) of surrounding rock and stability and tightness of salt cavern have been investigated, and a method is proposed for safe operating pressure…
The gas in-place (GIP) content and the ratio of adsorbed/free gas are two key parameters for the assessment of shale gas resources and have thus received extensive attention. A variety of methods have been proposed to solve these issues, however none…
Strandings of semi-solid to solid asphaltic bitumen along the coastline of South Australia have been reported as far back as the late 1800s. Hitherto only a single variety, now referred to as asphaltite, has been attributed to seepage from the nearby…
The tight sandstone reservoir in He8 member of Sulige gas field is mainly developed economically and efficiently by fracturing technology. In the process of fracturing, the filtration of fracturing fluid will cause damage to the reservoir, which will…
Gas hydrates, dominated by methane, are commonly found in hydrocarbon seep environments, and are recovered in piston and gravity cores from marine sediments. With the presence of hydrocarbons and other geological and geophysical parameters, gas…
Hydrocarbon gas flooding/Huff-n-Puff (HNP) can improve the oil recovery in the unconventional reservoirs. Here, the mechanisms accounting for fluid flow in the low-permeability and ultra-low permeability reservoirs were experimentally and…
Coalbed methane, shale gas and tight gas within coal measures exist simultaneously in many basins worldwide, with the successful exploration and development of specific gas respectively. However, the multi-layer/multi-unconventional natural gas…
Natural gas hydrate, as a kind of clean and environmental-friendly energy, has large reserves and attract great attention in recent years. In the past 20 years, exploration and reserves prediction for natural gas hydrate reservoirs have been widely…
As an unconventional, clean energy resource, natural gas hydrate is abundant and widely distributed in the subsea and permafrost area. Since the 1990s, permafrost and ocean hydrate production tests have been conducted successively by Canada, the…
Hydraulic fracturing produces artificial fractures and creates oil and gas seepage channels. It has now grown into an indispensable technology for oil and gas exploration and development, which leads to the evaluation of hydraulic fracturing effects,…
In the exploration, processing, and storage of oil, oil leakage accidents often occur. However, most organic oil pollutants are difficult to degrade. When oil pollutants permeate and invade the soil, the mineral composition and structural…
To fully utilize the abandoned salt cavern resources and to increase the total amount of the fossil energy reserve of China, reconstructing some of these salt caverns for underground gas storage (UGS) or strategic petroleum reserve (SPR) would be an…
Gas hydrates, dominated by methane, are commonly found in hydrocarbon seep environments, and are recovered in piston and gravity cores from marine sediments. With the presence of hydrocarbons and other geological and geophysical parameters, gas…
In 2014–2016 more than 600 specimens of semi-solid crude oil were recovered from 30 ocean beaches along the coastline of South Australia, as part of the recently completed Great Australian Bight Research Program. All are believed to be products of…