DOWNHOLE ROD PUMP FOR EXTRACTION OF HIGH-VISCOSITY OIL,申请号RU20110112375-传众专利搜索

DOWNHOLE ROD PUMP FOR EXTRACTION OF HIGH-VISCOSITY OIL

申请公布号：RU2451211(C1)

申请号：RU20110112375

申请日期：2011.03.31

申请公布日期：2012.05.20

申请人：

KUNEEVSKIJ VLADIMIR VASIL'EVICH

发明人：KUNEEVSKIJ VLADIMIR VASIL'EVICH;STRAKHOV DMITRIJ VITAL'EVICH;OSNOS VLADIMIR BORISOVICH;KUNEEVSKAJA LILIJA VALER'EVNA;TABACHNIKOVA TAT'JANA VLADIMIROVNA

分类号：F04B47/00

主分类号：F04B47/00

摘要：FIELD: engines and pumps. ^ SUBSTANCE: proposed pump comprises cylinder with its top part connected with flow string, plunger arranged in cylinder to make above-plunger chamber and communicated with flow string provided with thrust. Annular pressure valve with diameter exceeding plunger diameter is fixed on flow string between said thrust and plunger. Suction valve communicates above-plunger chamber with downhole space. Pressure well upstroke limiter is made up of ring fitted in flow string. Plunger is hollow. Suction valve is furnished with pusher rigidly coupled with flow string and fitted inside plunger to reciprocate therein. Reciprocation is limited by pusher outer ledge from above and by suction valve from below to shut off plunger chamber in down travel. Pressure valve is provided with brake to interact with flow string operated at force not exceeding limiter ring. ^ EFFECT: higher reliability, simplified servicing and repair. ^ 2 cl, 1 dwg