Shale gas is mined from shale gas out

Shale gas revolution shale gas is mined from shale gas out of the body located in the dark shale or high carbon shale in, natural gas fracturing is the subject of shale gas adsorption or free state exists in the mudstone, high-carbon mudstone, shale and pink sandwich on sandy rocks gas, it can generate in the various stages of organic origin of natural gas subject to the free phase (about 50%) present in the cracks, porosity and other reservoir space to adsorption state (about 50%) exist in kerogen and clay particles and pore surface, a very small amount to dissolve the state stored in kerogen, asphaltenes and petroleum gas also present in siltstone and silty mudstone, muddy siltstone sandwich-like, even sandstone formations After the gas is generated, the nearest source of aggregate performance in a typical in-situ formation of accumulation mode, the difference between oil shale, oil sands, and other large asphalt. Gas reservoirs with conventional reservoirs is different from both the gas generating shale source rocks, but also gather and save gas reservoir and cap rock. Therefore, organic matter content of the black shale, high-carbon mudstone is often the best shale gas development conditions.

Shale gas refers to the subject in the dark shale or shale in high carbon

Maide shale gas refers to the subject in the dark shale or shale in high-carbon to adsorb or free state as the main mode of existence gas accumulation. Shale gas reservoir porosity is generally 4% to 5% and permeability of less than 10 × 10-3 μm2. Mudstone and shale sedimentary rocks worldwide accounting for about 60% of the huge fracturing sand  shale gas prospects, its resource of 456.24 × 1012m3, mainly in North America, Central Asia, China, Latin America, the Middle East, North Africa and the former Soviet Union. Shale gas production and reservoir nature. Whether in the reservoir fluid flow, whether in favor of the oil and gas flowing large pore throats.

Good water and power systems and advanced mining technology, is an important factor affecting shale gas production. Shale gas reservoirs need to take appropriate measures to increase production and special drilling and completion methods. Horizontal or inclined exploration wells, deviated drilling is the best way to develop lenticular gas reservoirs, and horizontal wells will be the best way to develop an edge marine and marine sheeted sandstones.

Distribution and formation characteristics of shale gas

Maide shale gas Is hidden in shale for the exploitation of natural gas resources, China's recoverable shale gas reserves in the world.
Shale gas formation and enrichment has its own unique characteristics, often larger thickness distribution in the basin, widely distributed shale hydrocarbon source rock formations. Compared to more conventional natural gas, shale gas development has a long mine life and long production cycle advantage, most shale gas distribution wide, thick, and generally containing gas, which makes shale gas well in a stable long-term the rate of gas production.
Unconventional gas North American cratonic basin, Jurassic foreland basin Devonian - Mississippian enrichment multiple causes, multiple maturity shale gas resources.
Many Chinese coal basin development and several sets of dark mud, shale formations, tight sandstone interbedded presence of a large set of contacting gas, shale gas development favorable conditions, different sizes of natural gas discovered, but not yet in a large area gas exploration into the inner achieve a breakthrough. Statistics show that China Southern marine shale formation may be a major shale gas-rich region. In addition, Songliao, Erdos, Turpan-Hami, Junggar basin continental sedimentary shale formations also have shale gas enrichment basis and conditions. Chongqing Qijiang, Pine Valley, Nanchuan Wulong, Pengshui, Youyang, Xiushan and Wuxi and other counties are most favorable shale gas resources metallogenic belt, it was identified as the first field survey work target area.