In Lund, Sweden productivity problems were encountered during flow testing of a 1927 m deep gravel packed screen completed well and it became apparent that well development was needed to increase productivity. A hydrojetting system using coiled tubing in combination with simultaneous pumping was developed and tested and found to be successful. To verify whether the well development improved the...

This paper is a response to Brad Hooker's “Does having deep personal relationships constitute an element of well-being?” (2021). The begins with discussion the implications disagreement about such issues. After raising some general questions for account, turns key elements in relationship, according Hooker: multi-faceted understanding, and strong affection. issue impartiality discussed, it clai...

We show how the success of deep learning depends not only on mathematics but also on physics: although well-known mathematical theorems guarantee that neural networks can approximate arbitrary functions well, the class of functions of practical interest can be approximated through “cheap learning” with exponentially fewer parameters than generic ones, because they have simplifying properties tr...