It approaches the pay zone based on depth.

按深度，现在快接近油气层了。

youdao

The low resistivity pay zone has very complicated genesis and conductive mechanism.

低电阻率油层成因和导电机理非常复杂。

youdao

Cement sheath are the main composites for cementing well and isolating the pay zone together with casing pipes.

水泥石是构成井下水泥环的主要材料，它和套管共同起到层间封隔的作用。

youdao

Basically, to assess mineral content the geologists drill some holes and assay the ore for potash exploring percentage of mineral content as well as the thickness of the pay zone.

FORBES: How Arizona Is Helping America Reduce Dependence On Foreign Natural Resources

However, amid the deep spending cuts, including slashing pension benefits and civil servant pay, euro-zone countries are slowing and investors have been concerned about the ability of nations such as Spain and Italy to finance their budget deficits in the bond markets.

WSJ: Sarkozy Fights for Survival

But while he continues to own German bonds, he's aware of the price Germany may eventually have to pay to keep the euro zone intact.

WSJ: Yields Rise on German Bunds as Big-Name Investors Sell Down