From the perspective of the model distribution of drilling rigs, among the newly added 1643 drilling rigs, 49 extra-large drilling rigs (accounting for 3.0%) and 103 large-scale drilling rigs (accounting for 6.3%). The number of large and extra-large drilling rigs is similar to that of 2014. The 29 units in 2009 were basically the same, but their proportion rose from 8.7% to 9.3%.
There are a total of 934 medium-sized drilling rigs, which is a decrease of 282 from the 1216 in 2014. However, the proportion of newly-added rigs has not changed much, from 59.5% to 56.8%.
There are 557 small drilling rigs, 93 fewer than the 650 in 2014, and the proportion has risen from 31.8% to 33.9%.
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