发明名称 |
DEVICE FOR CLOSING OF PIPES BELOW IMMERSIBLE PUMP |
摘要 |
FIELD: oil production industry. SUBSTANCE: device relates to appliances used for closing of wells during their overhaul. Device has body with seat. Connected to body is pipe union with shut-off member located in it. Attached to pump is pusher with radial holes. Upper part of shut-off member is tapered with angle of tapering less than 9 deg. Lower part of pusher is made in the form of funnel which embraces upper part of shut-off member for wedging of shut-off member inside pusher. This arrangement is needed for ensuring inflow of well liquid into pump and for closing of seat by applying force to shut-off member which is equal to force of breaking it away from pusher at stalling of pump. Aforesaid embodiment of device is of highly reliable performance. EFFECT: higher efficiency. 2 cl, 1 dwg
|
申请公布号 |
RU2146326(C1) |
申请公布日期 |
2000.03.10 |
申请号 |
RU19980102647 |
申请日期 |
1998.01.30 |
申请人 |
SAFIN VELIR AKHATOVICH |
发明人 |
SAFIN V.A.;TAKHAUTDINOV SH.F.;FARKHUTDINOV R.G.;FAJZULLIN R.N.;SHARAPOV I.F.;ERMAKOV O.N. |
分类号 |
E21B34/06;(IPC1-7):E21B34/06 |
主分类号 |
E21B34/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|