It may be in a pool too small or too far from a potential market to justify the expense of drilling.

可能是储存它的池子太小，或与潜在的市场相距太远，因而钻井费用过高，不适宜开采。

youdao

Adopting the simulation experiment technique in the well drilling cultivating can shorten cultivating time enormously, and decrease the expense, and cut down the hazard.

在钻井培训中采用仿真试验技术，大大缩短培训时间，减少费用，降低了风险。

youdao

Apparently the final schism revolved around a debate over cutting corporate overhead and reducing drilling to more match cash flow with the expense side of the ledger.

FORBES: Aubrey's Gone Let's Sing A Song

Independent firms benefit from full expensing of their intangible drilling costs, while the integrated firms can expense only 70 percent of their IDCs and must write off the rest over a five- year period.

FORBES: Corporate Tax Reform and the Energy Sector