Learning by Drilling: Interfirm Learning and Relationship Persistence in the Texas Oilpatch *
研究发现石油生产公司与钻井承包商之间的合作经验能提升双方生产率，且这种学习是关系特定的，无法完全转移给其他合作方。
This article examines learning-by-doing that is specific not just to individual firms but to pairs of firms working together in a contracting relationship. Using data from the oil and gas industry, I find that the productivity of an oil production company and its drilling contractor increases with their joint experience. This learning is relationship-specific: drilling rigs cannot fully appropriate the productivity gains acquired through experience with one production company to their work for another.This result is robust to ex ante match specificities. Moreover, producers' and rigs'contracting behavior is consistent with maximization of relationship-specific learning's productivity benefits. Copyright 2011, Oxford University Press.