The heterogeneity of sand-body caused water' s breakthrough in high permeability area and produces remaining oil in low permeability part.

③砂体非均质严重，在高渗透地带造成水窜，在低渗透地区形成剩余油。

youdao

Prior to the mid-1980's, methane from coal seams was classified as an uneconomic resource - one of vast potential, but low value due to poor recovery rates and high associated water production.

在此之前的1980年代中期，从煤层甲烷被列为非经济资源-一个潜在的巨大的，但由于贫困低价值和高回收率有关水的生产。

youdao

"The flame from the jug of water was this high," "and that's what my kids and our family have been drinking."

VOA: standard.2010.01.02

Paradoxically, the government's difficulties over Iraq and public-service delivery, combined with the first stirrings of intellectual energy in the Conservative Party since Thatcherism's high-water mark in the late 1980s, have worked against him.

ECONOMIST: Bagehot

But the Shanghai summit could prove the high-water mark of Mr Powell's influence.

ECONOMIST: Lexington

As the details of Gibson's arrest dominated water cooler conversations, the future of his high-profile projects came under question.

CNN: Gibson: 'I am not an anti-Semite'