页岩气中的gross well 和 net well是什么意思?有没有权威的解释?谢谢!

【专家解说】：Net Acres or Net Wells=The sum of the fractional working interest owned in gross acres or gross wells. A net well is deemed to exist when the sum of fractional working interests owned in gross wells equals one. The number of net wells is the sum of fractional working interests owned in gross wells expressed as whole numbers and fractions thereof. gross wells是打的总井数 但假如有一个井我只有60%的产权，这个在gross里面算1个井，在net里面就算0.6个井 再比方说我打了20口井，但这些井我都只有50%的产权， 那么gross wells数就是20，net wells数就是10 gross》net