FIELD: well drilling. SUBSTANCE: cementing casing head has body with connecting inlet and outlet and bypass unit with hydraulic channel. Cementing casing head has cementing plug for hydraulic channel. Besides, cementing casing head has additional cementing plug. Bypass unit has additional hydraulic channels parallel and eccentric to connecting outlet. Bypass unit is installed for alternate alignment with connecting inlet and outlet. Additional hydraulic channels are made in quantity exceeding by one the total number of cementing plugs. Cementing casing head also has mechanism for rotation and fixing bypass unit. EFFECT: simplified control of cementing process due to use of several separating plugs and higher reliability of operation due to mechanized lowering of plugs into casing string. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND DEVICE FOR CASING CEMENTING | 0 |
|
SU1816847A1 |
| WELL COMPLETION METHOD | 1994 |
|
RU2083806C1 |
| GEAR FOR EXCITATION OF VIBRATIONS | 1991 |
|
RU2006570C1 |
| DEVICE FOR CASING CEMENTING | 0 |
|
SU1819987A1 |
| DEVICE FOR STAGE CEMENTING OF WELL | 1992 |
|
RU2029066C1 |
| UNIVERSAL CEMENTING PLUG | 0 |
|
SU1795085A1 |
| WELL DRILLING DEVICE | 1991 |
|
RU2047727C1 |
| METHOD FOR SELECTIVE ISOLATION OF PRODUCTIVE RESERVOIR AT CEMENTATION OF PRODUCTION STRING | 1993 |
|
RU2087674C1 |
| METHOD AND APPARATUS FOR CEMENTING WELLS | 0 |
|
SU1321807A1 |
| NONDRILLED SLEEVE FOR STAGE CEMENTING OF CASING STRING | 1999 |
|
RU2173766C2 |
