FIELD: deep water, oil and gas well drilling technology and equipment, particularly to provide air-tightness and strength of well walls in zone of permeable rock penetration by mudding thereof.
SUBSTANCE: mudding device nozzles are installed at 45° angle to longitudinal axis of device body and the nozzle exit ends face each other. Distance from nozzle exit ends to point of liquid flows generated by the nozzles intersection is equal to L1=(2.5-3)d, where d is inner nozzle diameter. Distance from above point of intersection to well wall is equal to L2=(3-3.5)d.
EFFECT: increased efficiency and reliability due to increased area of low-permeable screen to be formed.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| COLMATATOR FOR PERMEABLE ROCKS | 0 |
|
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RU2120022C1 |
