Oil producers drilling so-called parent-child wells in the Permian Basin are risking the loss of 15% to 20% of the crude that can ultimately be recovered from those wells by spacing them too close together. (Bloomberg) — Oil producers drilling so-called parent-child wells in the Permian Basin are risking the loss of 15% to 20% of the crude that can ultimately be recovered from those wells by spacing them too close together, according to a Houston-based investment bank. The analysis from Houston-based investment bank Tudor, Pickering, Holt & Co. — contained in a 61-page presentation seen by Bloomberg — is the latest salvo in the debate on the spacing of so-called parent-child wells in the Permian, the most prolific oil patch in the U.S. When drilled too close to the initial “parent” well, output from a “child” can be much less prolific. But producers risk leaving oil in the […]