FIELD: chemistry.
SUBSTANCE: invention concerns oil and gas industry, particularly clay-free drilling fluids (CFDF) used in drilling wells, including sloping and horizontal holes and side shafts at low formation pressure. Clay-free drilling fluid includes, wt %: Saraksan-T 0.3-0.8, Polycell KMK-BUR2 1.1-2.1, OP-10 0.5-1.2, water-repelling fluid GKZh-11N 1.0-2.9, the rest is water.
EFFECT: enhanced efficiency of well drilling at low formation pressure due to application of low-density CFDF with improved structural properties and rheological parametres ensuring enhanced containment and transportation properties while preserving filtration properties and improving environmental safety of storage.
1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| BIOPOLYMER DRILLING AGENT | 2007 |
|
RU2351628C1 |
| CLAY-LESS POLYSACCHARIDE DRILLING AGENT | 2009 |
|
RU2427605C1 |
| DRILLING FLUID FOR FLUSHING OF LONG-DISTANCE STEEPLY INCLINED WELLS UNDER CONDITIONS OF PERMAFROST AND HIGHLY COLLOIDAL CLAY ROCKS, AND ITS APPLICATION METHOD | 2011 |
|
RU2483091C1 |
| DRILLING AGENT | 2007 |
|
RU2362793C2 |
| POLYMER-CLAY FLUID FOR DRILLING WELL IN PERMAFROST ROCK | 2004 |
|
RU2274651C1 |
| HEAVY DRILLING FLUID | 2006 |
|
RU2315076C1 |
| EMULSION DRILLING MUD | 2020 |
|
RU2738187C1 |
| CLAY-FREE DRILLING FLUID FOR COMPLETION OF FORMATIONS OF CONTROLLED DIRECTIONAL AND HORIZONTAL WELLS IN CONDITIONS OF ABNORMALLY HIGH FORMATION PRESSURES | 2010 |
|
RU2440397C1 |
| CLAYLESS DRILLING MUD BASICALLY DESIGNED FOR BORING HORIZONTAL HOLES (VERSIONS) | 2001 |
|
RU2186819C1 |
| WEIGHTED MINERALIZED CLAYLESS DRILLING MUD | 2017 |
|
RU2655276C1 |
