Formations were unconsolidated and hole deviation Angle was high, so it was difficult to recover cores from this well.

由于地层疏松，该井井斜角较大等造成取心难度大。

youdao

Formations were unconsolidated and hole deviation Angle was high, so it was difficult to recover cores from this well.

由于地层疏松，该井井斜角较大等造成取心难度大。

youdao