According to the geologic characteristics and development status of the Yushulin Oil Field, the mechanism of casing damage is studied and the effect of axial tension on casing intensity is discussed.
根据榆树林油田地质特征和开发现状，研究了套管损坏机理，讨论了轴向拉应力对套管强度的影响。
2
Carbon pressure ball machine device is a hydraulic pump hydraulic protection will be high pressure oil into the hydraulic cylinder, driving the piston produce axial displacement.
碳素压球机液压保护装置是由液压泵将高压油打入液压缸，使活塞产生轴向位移。
3
This article discusses the cause and damage of shock during distributing oil in axial plunger pump, introduces and analyzes some methods of controlling shock during distributing oil.