13 Before spud, adjust the viscosity of bentonite sweep to over 80 seconds by adding Lime.
13 Before spud, adjust the viscosity of bentonite sweep to over 80 seconds by adding Lime.
一开前，用石灰将般土浆粘度调至80秒以上。
13 Before spud, adjust the viscosity of bentonite sweep to over 80 seconds by adding Lime.
一开前，用石灰将般土浆粘度调至80秒以上。