FIELD: oil and gas industry.
SUBSTANCE: invention refers to oil and gas industry, particularly to bipolymer drilling agents (BPDA) used at drilling wells, horizontal and control directional ones including, and also for well recovery by drilling second wells under conditions of abnormal low reservoir pressure. Biopolymer drilling agent contains, wt %: Saraksan-T 0.2-0.5; Polycell KMK-BUR2 1.2-1.6; neonol 0.6-0.8; calcium chloride 15-27; water - the rest.
EFFECT: increased efficiency of well drilling due to implementation of BPDA with upgraded structural-rheological properties facilitating increased retention and transporting capability of BPDA at simultaneous maintaining of its filtration properties and frost resistance, also reduction of time for BPDA preparing.
1 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CLAY-FREE DRILLING FLUID | 2007 |
|
RU2348670C1 |
| WELL KILLING LIQUID | 2007 |
|
RU2345114C1 |
| POLYMER-CLAY FLUID FOR DRILLING WELL IN PERMAFROST ROCK | 2004 |
|
RU2274651C1 |
| HEAVY DRILLING FLUID | 2006 |
|
RU2315076C1 |
| RESERVOIR TEMPORARY INSULATION EMULSION | 2008 |
|
RU2379473C1 |
| DRY MIXTURE FOR MAKEUP OF WELL-KILLING FLUID | 2014 |
|
RU2558072C1 |
| CLAY-FREE DRILLING FLUID | 2004 |
|
RU2297435C2 |
| CLAYLESS LOADED DRILLING MUD | 2011 |
|
RU2481374C1 |
| DRILLING MUD | 2017 |
|
RU2681614C2 |
| SOLID PHASE-FREE DRILLING MUD (VARIANTS) | 2005 |
|
RU2304605C1 |
