The objective of the study is to provide lessons learned from the actual well performance data, which is provided in Part A of this paper((1)), which will improve future well planning as horizontal wells continue to be used in the fields offshore East Kalimantan, Indonesia. Practical issues related to well planning, such as selection of location, well length, well path, and standoffs to fluid contacts, are presented. The paper also discusses specific operational strategies used in drilling, completing, and producing these horizontal wells. Results from the well performance data provide guidelines and refinements for continued implementation of horizontal wells to optimize thin oil column development in these fields.