Issue 10/2017 - Major breakthrough in dry carbon dioxide sand fracturing in China

China's carbon dioxide dry sand fracturing has made a major breakthrough

A few days ago, China National Petroleum Corporation released news that with the successful completion of the dry sand fracturing test of well carbon dioxide in Sudong XX-XXC4, PetroChina's major on-site research test project - carbon dioxide dry sand fracturing technology has completed the key "three steps" from key equipment research and development, indoor process technology test to operation site verification, laying a foundation
for the standardized operation and large-scale application of this technology in China.

Carbon dioxide dry sand fracturing technology, by using liquid carbon dioxide instead of conventional water-based fracturing fluid, has the advantages of no residue, no aqueous phase, fast return discharge, no damage to the reservoir, etc.
, and has obvious
advantages in environmental protection and storage increase 。 This technology adopts systematic construction control, intelligent data collection, micro-seismic crack monitoring and other technical means, breaks through the bottleneck of large-scale application such as difficult carbon dioxide production organization, many participating construction equipment, high implementation cost and long operation cycle, and establishes a complete carbon dioxide operation process technical specifications, fracturing construction standards and HSE system, which provides theoretical basis and on-site technical support
for the large-scale application of carbon dioxide dry sand fracturing technology in China.