FIELD: drilling soil or rock.
SUBSTANCE: invention relates to water-based drilling fluids and may find use in the drilling of oil and gas wells, especially when drilling salt deposits under conditions of abnormal formation pressures, high temperatures and hydrogen sulfide aggression. Drilling solution comprises, wt%: PPBV clay powder 2–4; VPK-402 cationic polymer polydadmic 2.6–5; Bioksan biopolymer 0.1–0.3; sodium chloride 30; starch 1.5–2.5; SMEG-5 lubricating additive 1–1.5; antifoaming agent T-92 1–3; water – the rest.
EFFECT: decrease in the consumption of chemical reagents during salting and improved filtration index and salinity of the solution.
1 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| POLYCATIONIC DRILLING FLUID FOR DRILLING SALT DEPOSITS | 2022 |
|
RU2806397C1 |
| CATION-INHIBITING DRILLING MUD | 2014 |
|
RU2567580C1 |
| NON-DISPERSING MUD | 2013 |
|
RU2541664C1 |
| CATIONIC DRILLING MUD | 2017 |
|
RU2655267C1 |
| REAGENT-STABILIZER AND DRILLING FLUID BASED ON IT | 2022 |
|
RU2801236C1 |
| THERMAL RESISTANT POLYCATIONIC DRILL MUD | 2017 |
|
RU2651657C1 |
| CATIONIC INHIBITING DRILLING MUD | 2020 |
|
RU2775214C2 |
| DRILLING FLUID | 2022 |
|
RU2792860C1 |
| INHIBITING DRILLING MUD (VERSIONS) | 2016 |
|
RU2633468C1 |
| DRILLING MUD | 2014 |
|
RU2567579C1 |
