Research Article
Study and Application of Polymer Film-Forming Shielding Plugging Drilling Fluid System
Table 3
Measured drilling fluid performance of La 5-PS1922.
| Depth
(m) |
(g/cm3) | AV
(s) | FL
(mL) | Mud cake
(mm) | YP
(Pa) | PV
(mPa·s) | | Gel10′′/Gel1′
(Pa) |
(·M/18°C) |
| | 850 | 1.35 | 52 | 4.8 | 1.0 | 9.5 | 21 | 0.45 | 2/4 | 4.10 | | 910 | 1.48 | 68 | 3.4 | 1.0 | 19 | 33 | 0.58 | 5/7.5 | 3.55 | | 945 | 1.48 | 62 | 3.8 | 1.0 | 15 | 28 | 0.54 | 4.5/6.5 | 3.57 | | 1035 | 1.48 | 60 | 3.6 | 1.0 | 14.5 | 27 | 0.54 | 4/6 | 3.68 | | 1084 | 1.48 | 57 | 3.8 | 1.0 | 13 | 27 | 0.48 | 3/7 | 3.75 | | Electric log | 1.48 | 55 | 3.6 | 1.0 | 10 | 25 | 0.40 | 3/5 | 3.55 | | Cementation | 1.48 | 55 | 3.6 | 1.0 | 10 | 25 | 0.40 | 3/5 | |
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