Research on the influencing factors and mechanism of single-phase microemulsion cleaning of shale gas oil-based cuttings.

Oil-based cuttings (OBCs) produced by shale gas exploitation are classified as hazardous waste. Their appropriate utilization and disposal is a key issue that urgently needs to be resolved. A single-phase microemulsion (SPM) has ultra-low interfacial tension and strong solubilization ability.

Physicochemical characteristics of oil-based cuttings from pretreatment in shale gas well sites.

Understanding the physicochemical characteristics of oil-based cuttings (OBCs) is an important foundation for subsequent treatment and management. The macro- and microscopic properties of white oil-based cuttings (WOBCs) and diesel-based cuttings (DBCs) after the different pretreatment steps have been assessed using scanning electron microscopy. The organic and inorganic compositions of OBCs have been analyzed using X-ray diffraction, Fourier-transform infrared spectrometry, and gas chromatography-mass spectrometry.

Precise hepatectomy based on the optimized technique of hepatic blood flow occlusion combined with the curettage and cut technique by electrotome.

Background: The aim of this study was to evaluate the outcome of precise hepatectomy based on the optimized technique of hepatic blood flow occlusion combined with the curettage and cut technique by electrotome.

Methods: Hospitalized patients with primary liver cancer treated in our hospital were included in this study and all patients (N.=61) were numbered according to the inclusion sequence and were randomized into group A and group B: 1) group A: precise liver resection by using simplified blocking combining with electrotome; 2) group B: precise liver resection by using half-hepatic occlusion + CUSA assisting liver parenchyma transection+ lower central venous pressure controlled by the anesthesiologist.