Cement Loop Damage-based Fracture Mechanism during Repair of Casing Failure Well

Fracture Dynamic Propagation Model of High-Energy Gas Fracturing for Casing Perforated Well

The onshore oil and natural gas industries of China have started a large-scale development when crude oil reserves have been difficult to recover. The stratum fracture modification is an indispensable measure to efficiently develop oil and gas fields. Hydraulic fracturing is the most important reservoir stimulation technique, but it is still faced with various problems such as the failure to fr...

Fracture Failure Mechanism

The present study investigates the failure mechanisms of industrial fiber materials 13 a custom designed fiber cutting performance test bench. The fracture morpholog 14 fibers are examined by scanning electron microscopy. The analysis reveals that fiber cutting can be 15 distinguished according to four distinct stages of fiber failure represented by shearing, cutting, 16 brittle fracture, and t...

Inorganic Corrosion-Inhibitive Pigments for High-temperature Alkali- activated Well Casing Foam Cement

Diagnosis method of casing damage based on BP neural network

One of the major problems faced by the oilfields in the middle time is casing damage. The neural network, the improvement BP as well as the three-layer feed forward neural network applied in damage diagnosis is a key way to prevent damage. The formations of the damage are corresponded to the input vector. Factors such as casing age limit, strata stress, soaking time are described as real Number...

Mechanical Strength of Radius Fracture Repair Using an Expanding Cement

Introduction Displaced fractures of the distal radius are typically repaired by either closed reduction and casting or open reduction with internal plate fixation. This treatment dichotomy fails for elderly patients, where risks associated with open surgery outweigh benefits, and malunions after closed reduction frequently result in deformity. A need exists for minimally invasive fixation which...