| 摘要 |
FIELD: mining industry, particularly to take subsurface oil samples in running and exploratory wells working in flow mode. ^ SUBSTANCE: sampling device has tubular body with lock mechanism arranged inside the body and connected to controlling valve assembly from the first side and controllable valve assembly from the second side thereof. Joint relay is screwed on the controlling valve assembly. The controlling assembly is retained in its opened position by joint relay including body with orifices for pin receiving, pusher acting upon the controlling valve assembly and bush with fluid circulation orifices. Valve assemblies include all-rubber valves having 30° cone angles. The relay has barbs to engage with production string connector. When sampling device moves downwards the barbs are brought into folded state. ^ EFFECT: increased operational reliability and prevention of oil sample degassing due to improved air-tightness of sampling device interior. ^ 2 cl, 1 dwg |
