Recently, news came from Luntai, Xinjiang, that Xinjiang Project Department of ZORANOCcementing company overcame the problem of serious leakage of well Shunbei and successfully completed the well cementing construction, marking the breakthrough of the company's leakage well cementing construction in Shunbei work area, Xinjiang.

Shunbei well is a pre exploration well deployed by ZORANOC. The second spud in well is 5495m deep, with Ф 250.88mm + Ф 244.5mm casing. It is constructed by two-stage cementing process. Shunbei block is mostly ultra deep well, which has many difficulties in cementing construction, such as easy to leak, easy to kick, high well temperature and serious after effect.

It is reported that this well is the one with the most serious loss in Shunbei work area, with large annulus volume, low density of drilling fluid, especially serious loss in the process of drilling. The accumulated loss of drilling fluid is 5302m², so it is very difficult to establish circulation before cementing.

In order to ensure the smooth cementing of the well, the company attaches great importance to it. The company's chief cementing expert guides the construction in-depth on-site. By optimizing the cementing process, adopting the leakage proof ultra-low density cement slurry + leakage proof and channeling proof non-permeability cement slurry system, leakage proof system isolation fluid, optimizing the displacement of slurry replacement construction, turbulent displacement, balanced pressure cementing construction and other technical measures, the well cementing construction is successful.