At present, most of the domestic coalbed methane reservoirs are reformed using fracturing techniques that use water-based fracturing fluids to carry sand, which is harmful to coal seams. The reservoir-renovating process of carbon dioxide injection fracturing sand carrying sand has relatively minor damage to the coal seam and has been widely used in the United States, and has achieved good results. This technology injects carbon dioxide into the coal seam to reduce the partial pressure of methane in the coal reservoir and accelerate the desorption of methane, which can effectively displace methane from the coal seam and increase the single well output of the coal bed gas. The injected gas also increases the driving force of the coalbed gas flow to the wellbore, which is favorable for the pressure-sealed coalbed gas reservoir to overcome the flow resistance in the low permeability coal seam and increase the production and recovery of the coalbed gas well, which has a good application prospect.
In 2007, Anhui Huaibei Mining Group signed the Luling CBM Development Contract with the underground special operations office of Zhongyuan Oilfield. In the LG-3 CBM well fracturing construction, the oilfield professional and technical personnel rely on the leading technology of domestic coal seam gas pressure cracking and drainage, fully learn from the successful experience of the carbon dioxide fracturing in the natural gas well, carefully compile the fracturing plan, and finely organize the on-site construction. A number of fracturing measures have been adopted to effectively overcome technical difficulties such as complex coal seam structure, unstable strata, and large quantities of sand, ensuring the safe and high-quality construction of the experimental well.
The successful testing of a number of new technologies made Zhongyuan Oilfield the first company in China to successfully apply carbon dioxide fracking CBM well technology. At the same time, it also marked a major breakthrough in the carbon dioxide fracturing technology and technology of coalbed methane wells in Zhongyuan Oilfield, providing strong technical support for the large-scale exploitation of coalbed methane resources and improvement of CBM recovery in China.
Yiyongli is a leading supplier of custom plastic large part by vacuum forming process across a variety of industries.We can provide product design and manufacturing engineering assistance and is ISO 9001:2015 registered.
Vacuum forming is a very economical method for producing large plastic parts.It offers lower cost tooling and quicker prototyping than other technology. Vacuum forming is best choice compared to other manufacturing methods such as complex fabricated sheet metal or fiberglass, in large, complex shapes which require a lot of metal fabrication, grinding and finishing. Vacuum forming also compares favorably to injection mould in big plastic parts when small quantities.
Vacuum forming large parts are single component parts that come out of the actual product or a substantial part of the finished product. Usually they are enclosures or housings for equipment.Applications of vacuum forming large parts are seen in many industries, including medical equipment panels ,machine enclosures, engine covers for aerospace, transportation or construction industries, and rail-car interior trim or seat components.
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