Research and Application of Solid Free Film-forming and Anti-sloughing Drilling Fluid System in Well ZK1146 of Jinying Mining Area
-
摘要: 甘肃肃北县金鹰矿区ZK1146井是在甘肃祁连山金矿实施的一口科学钻探井,矿区地层包括砂岩、泥岩、炭质板岩和千枚岩。地层成岩性、胶结性差,倾角大,层理紊乱,井壁强度低。针对现场情况,研制了成膜防塌无固相钻井液体系。该体系主要是针对破碎、坍塌掉块及水敏性地层的钻进施工中遇到的主要难题,具有护壁性、抑制性和胶结性。通过在ZK1146井中的应用,取得了较好的护壁、护心效果,有效地防止了泥岩的分散,保证了该项目的顺利施工。Abstract: Well ZK1146 is a scientific drilling hole for Qilianshan gold mine, which is located in Jinying mining area of Gansu Province;the mining area contains formations of sandstone, mudstone, carbonaceous slate and phyllite with poor li-thology and cementation, large dip angle, disordered bedding and low wall strength.Based on this situation, the solid free film-forming and anti-sloughing drilling fluid system was developed with inhibitory and cementation to solve the drilling diffi-culties in broken, collapse and water sensitive formations.Good effects of borehole wall and core protection have been ob-tained in well ZK1146, the mudstone dispersing is effectively prevented.
-
Key words:
- drilling fluid /
- film-forming system /
- inhibitory /
- borehole wall stability /
- phyllite /
- Jinying mining area
-
-
计量
- 文章访问数: 142
- PDF下载数: 5
- 施引文献: 0
下载: