FIELD: drilling of deep wells, possible use for provision of stability of shaft in intervals of plastic salty rocks.
SUBSTANCE: in flowing salty rocks shaft is held due to periodic, performed not less than 3 times, processing of nominal diameter of plastic component extracted to inside of shaft from well walls by bit. After each processing after 7 days shaft narrowing value is determined from profile metric data and graph of change of intensiveness of flow of salt in time is built. When salt flowing intensiveness equals 0 mm/day, time of safe lowering of casing column is determined using the graph.
EFFECT: increased well reinforcing efficiency due to decreased probability of contortion of casing columns in intervals of plastic salt.
2 dwg, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF LOCAL PREDICTION OF POTENTIAL ZONE OF CRUSHING OF CASING STRINGS | 2018 |
|
RU2692389C1 |
| METHOD FOR DETECTING RANGES OF PLASTIC DEFORMATIONS OF SALT IN CROSS-SECTION OF WELLS | 2003 |
|
RU2249688C1 |
| METHOD OF INCREASING STABILITY OF ROCK IN NEAR BOREHOLE ZONE | 2007 |
|
RU2341638C1 |
| METHOD OF DETECTING PLASTICALLY DEFORMED SALT ZONES IN WELL COLUMN | 2008 |
|
RU2377605C1 |
| METHOD OF CONSOLIDATING WELLS IN PLASTIC ROCK | 0 |
|
SU1416667A1 |
| METHOD OF CONSTRUCTION OF WELLS | 0 |
|
SU1776296A3 |
| METHOD OF AVOIDING DEFORMATION OF CASINGS IN SALT-BEARING DEPOSITS OF OPERATING WELLS | 0 |
|
SU1411438A1 |
| METHOD FOR PLASTIC SALT DEFORMATION INTERVAL DETERMINATION BEYOND CASING PIPE | 2004 |
|
RU2273731C1 |
| METHOD OF DRILLING AND SECURING WELLS IN PLASTIC ROCK | 0 |
|
SU1404639A1 |
| METHOD OF BOREHOLE CONSOLIDATION IN PLASTIC BOCK | 0 |
|
SU1731938A1 |
