Sentence examples for deep petroleum exploration from inspiring English sources

The sandstone samples came from deep petroleum exploration wells off western Australia.

China, too, has appreciable achievements in deep petroleum exploration.

Despite these achievements, however, a lot of problems have also emerged in deep petroleum exploration.

All these problems provide a tremendous challenge to deep petroleum exploration.

Over the past years, the world has shown robust momentum for deep petroleum exploration.

From 1980, deep petroleum exploration started to extend from onshore to offshore.

Saliba et al. developed a prominent approach applying organic composite coatings as protective layers for surfaces of steel pipelines designed for potential deep-water petroleum exploration.

Many scholars have investigated deep petroleum geologies and exploration (Perry 1997; Dyman et al. 2002; Pang 2010; Ma et al. 2011; He et al. 2011; Wang et al. 2012; Wu et al. 2012; Bai and Cao 2014).

With the nation's breakthroughs in deep and ultra-deep well drilling techniques and equipment, onshore petroleum exploration has continued to extend toward deep and ultra-deep levels (Sun et al. 2010); petroleum exploration has also undergone a transition from shallow to deep and further to ultra-deep levels.

On July 28 , 1966 China's first deep well, Songji-6 of Daqing (4,719-m 4,719-mpth), wellcompletedepthrking the transition of China's drilling operation from shallowasells to middle and deep wells, and signaling that completedetroleumarkingrathen was transitionof shallow toward deep levels.

As it is nearly impractical to expect any major breakthrough in middle or shallow basins (Tuo 2002), petroleum exploration turning toward deep basins has become inevitable.