Patenton — panteon of patents

(19)

RU

(11)

2 029 066

(13)

C1

(51)

IPC

(21) (22)

Application

5065170/03, 1992-06-30

(22)

Actual filing date

1992-06-30

(45)

Published

1995-02-20

(72)

Inventor

Gabdullin R.G.Zhzhonov V.G.Mansurov R.Kh.

(73)

Holder

Tatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Neftjanoj Promyshlennosti

DEVICE FOR STAGE CEMENTING OF WELL Russian patent published in 1995 - IPC

Abstract RU 2029066 C1

FIELD: stage cementing of wells. SUBSTANCE: device for stage cementing of well has body with side cementing openings. Casing is installed from outside and forms space together with body against side cementing openings. Arranged between body and casing is valve with ball shutoff member. Valve is located in the middle part of space to form upper and lower chambers together with body and casing. Upper chamber is communicated with external space, and lower chamber is communicated with body space. Ball shutoff member is located in lower chamber and made of flexible-deformable material for forcing into upper chamber. Pressure of forcing is determined from expression given in invention description. EFFECT: prevented getting of cement slurry filtrate to producing reservoir. 4 dwg

Similar patents RU2029066C1

Title Year Author Number
WELL COMPLETION METHOD 1994
  • Shajakhmetov Sh.K.
  • Zhzhonov V.G.
  • Nenarokov S.Ju.
  • Shajakhmetov A.Sh.
 RU2083806C1
SHUTOFF FILTER 1989
  • Shajakhmetov Sh.K.
  • Gabdullin R.G.
  • Gataullin M.G.
  • Ziganshin R.Z.
 RU2041344C1
WELL FILTER 1994
  • Abdrakhmanov G.S.
 RU2085708C1
METHOD AT OPENING WORKING SEAM, FREE AT PERFORATING 0
  • Gabdullin Rafagat Gabdelvaleevich
  • Ibatullin Rustam Khamitovich
  • Shayakhmetov Shamil Kashfullinovich
 SU1765372A1
METHOD FOR SECONDARY OPENING OF PRODUCTIVE BED 1996
  • Shajakhmetov Sh.K.
 RU2118445C1
CUTOFF FILTER 0
  • Andreev Vladimir Aleksandrovich
  • Gabdullin Rafagat Gabdelvaleevich
 SU1763640A1
METHOD FOR WELL CONSTRUCTION 1989
  • Gabdullin R.G.
  • Gabdullina Z.R.
 RU2021477C1
METHOD FOR SELECTIVE ISOLATION OF PRODUCTIVE RESERVOIR AT CEMENTATION OF PRODUCTION STRING 1993
  • Rakhimkulov R.Sh.
  • Afridonov I.F.
  • Latypov R.A.
 RU2087674C1
METHOD FOR PUMPING IN WELL 1992
  • Abdrakhmanov G.S.
  • Ibatullin R.Kh.
  • Fatkullin R.Kh.
  • Jusupov I.G.
  • Zhzhonov V.G.
  • Khamit'Janov N.Kh.
  • Zajnullin A.G.
 RU2068943C1
FILTER-SAFETY VALVE 0
  • Gabdullin Rafagat Gabdelvaleevich
  • Shayakhmetov Shamil Kashfullinovich
 SU1102903A1

RU 2 029 066 C1

Authors

Gabdullin R.G.

Zhzhonov V.G.

Mansurov R.Kh.

Dates

1995-02-20—Published

1992-06-30—Filed

read Similar patents