Shale gas development less harmful impact on the environment

Shale gas development less harmful impact on the environment

It is for environmental needs, at home and abroad has begun to study a smaller impact on the environment, and even non-hazardous and more efficient drilling, fracturing fluid.

Shengli has successfully developed independent non-toxic, biodegradable synthetic-based drilling fluid instead of water-based, oil-based drilling fluid.
shale gas exploration and development of oil and gas in the dense, based on a breakthrough and developed, and its main techniques are similar. First drilling. Horizontal wells and has implemented more than 150 years of vertical wells just drill travels in a different direction, possible environmental pollution drilling, oil is basically the same floor, handled properly can really pollute the environment. But this issue has long been resolved.
Stratum of the few left in the fracturing fluid will contaminate groundwater it  We know that for people to use and communicate in groundwater and surface water are at the surface, while the vast majority of shale oil and gas development in the deep, even more than conventional oil and gas but also deep. This is because in most cases in the shale oil and gas generated within the upward migration and accumulation in the porous reservoir. Implementation of shale fracturing between aquifers and surface often several kilometers across hundreds of non-permeable layer. When people are aware of the possible pairs of shallow groundwater or surface water contamination can be avoided when the intention formation with China Unicom.
Many people also worry that the large amount of  Hydraulic fracturing  and affect the environment. This is a problem, but it need not worry too much. We in the Northwest Territories often specialized in playing well or well field to join the pipeline near the small lake to resolve. Shale oil and gas wells is quite dense formal development, most of the water can be reused. Water is not as much as the legend, but should be less.
After completion of the drilling process and to ensure that mud, oil does not leak, completely recyclable and harmless treatment. Moreover, the use of recycled materials can be used repeatedly, floor oil and associated gas flaring are also recycled or. Such as less than this, the construction unit will be ordered rectification, fines or cancel construction qualifications. Clearly, the current oil industry has been doing it. Otherwise, attach such importance to the environment today, can survive it
Environmentalists are most concerned about fracturing. Principle is the use of  hydraulic fracturing  fracturing fluid carrying sand to dense rock will press out small cracks, but after fracturing fluid flowback from the wellhead to shift left in the seam with sand as a support to prevent fracture closure. These artificial joints difficult to guide low grade oil and gas flowing into the wellbore being mined. It is very difficult high-tech process, the pressure opening pressure is not small, but the pressure is too large may also be the target layer are also outside the rock cracks.
As some people worry that fracturing caused by the earthquake is even more worrying. Analogy is a large reservoir can be a huge load increment can be triggered to regulate micro-seismic crustal balance, but its magnitude is very low and never cause harm. Fracturing and stress state of underground development impact than an order of magnitude lower large reservoir. Instead, rock fracturing generated microseismic fracture monitoring fracturing and inverted to become a powerful tool for development effectiveness in  shale gas  development in the rapidly evolving technology and it became a branch.