Unconventional gas shale in unconventional day

Because conventional multi-layer fracturing proppant density, high degree of subsidence, resulting in the upper part of the small layer of the lack of effective support, for underground geotechnical engineering brigade to carry out a full filling cracks fracturing ceramic proppant manufacturers technology unconventional gas research, the technology is in critical pressure when adding crack density proppant, proppant in the fracture to prevent excessive settlement, so that all the pressure to open the reservoir to get unconventional gas effective support to ensure the well production. The technology recently conducted the first field trials in the state 28-24 wells, increasing pressure after oil 3 tons. Research preferred proppant is currently the lowest density used in fracturing proppant, consistent Oil fracturing proppant with the water density, can achieve full suspended in the unconventional gas fracturing fluid and proppant high intensity; most important feature of the process is laid proppant concentration is low, only conventional proppant concentration laid tenth, can greatly reduce the unconventional gas size of proppant use, reduce the amount of fracturing fluid, reduce production costs while also reducing the damage to the reservoir.Most proppant conductivity extensive shale gas production distribution, large thickness, and unconventional gas, which makes shale gas wells can be long-term in order to stabilize the rate of gas production. Unconventional gas, a kind of free or adsorbed state hiding in shale or clay formations in unconventional days. Unconventional gas and natural gas, are becoming agitated world market forces.

Frac sand fracturing process for a particular

Fracturing is a special process method differs from conventional fracturing frac sand fracturing, it can change the normal size ratio cracks to some extent, to achieve filling "short wide crack" special purpose, in order to meet certain the high permeability reservoir fracturing of ceramic proppant manufacturers special needs. "De-fracturing technology" is divided into seven chapters. Chapter 1, a brief overview of the main research areas of special research requirements fracturing technology system and the removal of frac sand fracturing. Chapter 2 briefly describes the removal of frac sand fracturing technology generation and development process and formation ultra lightweight proppant fluid flow patterns from fracturing study analyzes the necessity of the implementation of high-permeability formations off the frac sand fracturing. Chapter 3 discusses the cracks in the surrounding frac sand off the frac sand off the microscopic mechanism and technical conditions. Chapter 4 discusses the control mechanism of the cracks around the belt off of crack propagation. Chapter 5 discusses the three-dimensional crack propagation law resin coated silica sand and crack off the frac sand in front of the one-dimensional variation off the frac sand after. Chapter 6 summarizes the removal of sand fracturing design methods, including time off the sand off the sands of time to design and limited, and the amount of fluid distribution design methods.

Mined shale gas unconventional gas resources

Shale gas is mined from shale out of a very important unconventional gas resources. Shale gas formation and enrichment has its own unique characteristics, often larger thickness distribution in the basin wide distribution of hydrocarbon source rock shale formations. Compared to more conventional natural gas, shale gas development has a long mine life and long production cycle advantages, most extensive Shale gas revolution production distribution, large thickness, and generally contain gas, which makes shale gas wells can be long-term in order to stabilize the rate of gas production. Shale gas, a kind of free or adsorbed state hiding in shale or clay formations in unconventional days. petroleum proppant and natural gas, are becoming agitated world market forces. This is called the international energy community "game changer" gas, which greatly changed the energy landscape of the world. Especially occur in unconventional shale gas. Also an dense shale rock, it can also be classified as tight gas gas. Industrial development is only achieved success in North America (mainly the United States). It began in the Devonian ceramic proppant suppliers of the Appalachian Basin, is dark brown and black, rich in organic matter, can be a lot of angry. Cracks in the main reservoir space, and in the form of water-soluble gas and adsorbed gas occurrence, for low (negative) pressure, low saturation (about 30%), and thus to low yield. But in the fracture zone will receive a higher yield, underground explosions and reform measures, such as the effect of fracturing or. The mid-1990s, has been expanded to Michigan and Illinois basins, producing layer expanded to the Lower Carboniferous shale, production reached 8.4 billion cubic meters. Its resources up to several trillion cubic meters. Sinopec in eastern northeast drilled five appraisal wells, including two wells to obtain industrial air, preferably a building block of South Yellow equality favorable. CNOOC in regions to carry out preparatory work for shale gas exploration. Petroleum three continental shale gas wells to obtain discovery. United Coal in Basin proposed and three shale gas favorable areas.