上部主要以砂岩为主，少量泥岩、页岩互层，砂岩胶结松散，渗透性好，易坍塌

The upper part is mainly sandstone, a small amount of mudstone and shale interbedded, the sandstone is loosely cemented, has good permeability, and is easy to collapse; the middle part is mainly sand and mudstone, which is prone to shrinkage and magma; the lower part is mainly mudstone, which is easy to collapse. Technical problems such as pulping and diameter reduction occurred. The application of GWHP-FLEXTM strongly inhibited high-lubricity water-based drilling fluid technology has significantly improved the stability of the borehole wall, and the first-time success rate of electrical surveys is over 97%. The application of GW-DEW on-line solid-liquid separation technology and GW-ASLOT waste liquid terminal treatment technology meets the WHO drinking water standards. According to needs, GW-RES solid waste comprehensive utilization technical services can also be provided, and resource-based products can meet the JC/T 422 standard.

The upper part is mainly sandstone, a small amount of mud rock, shale mutual layer, sandstone glue loose, good permeability, easy to collapse; The application of GWHP-FLEXTM strong inhibition of highly lubricated water-based drilling fluid technology, well wall stability significantly improved, the success rate of electrical test once reached more than 97%. The WHO WHO WHO drinking water standards are met by the application of GW-DEW on-line solid-liquid separation technology and GW-ASLOT waste liquid terminal treatment technology. As needed, GW-RES solid waste integrated utilization technology services can also be provided, resource-based products can meet the JC/T 422 standard.

The upper part is mainly sandstone, with a small amount of mudstone and shale interbedding. The sandstone is cemented loose, with good permeability and easy to collapse; the main part of the middle part is mainly sand mudstone, which is prone to problems such as reducing diameter and slurry making; the lower part is mainly mudstone, which is prone to technical problems such as slurry making and reducing. The GWHP flextm is used to suppress the high lubricating water-based drilling fluid technology, and the stability of the well wall is significantly improved, and the success rate of the electric measurement is over 97%. The WHO drinking water standard is met by the application of gw-dew on-line solid-liquid separation technology and GW aslot waste liquid terminal treatment technology. As required, it can also provide GW res comprehensive utilization technology services, and the resource products can meet jc/t 422 standard.<br>