Oglan 2 Dir Well: A Successful Exploratory Project With Heli-Portable Logistics-The Role of Integration in Reaching the Goals

摘要

Drilling an exploratory well in highly sensitive environments imposes a number of challenges for an Oil Company. One of these challenges is to provide Heli-portable logistic coordination to achieve a successful drilled well in the most cost/time effective manner keeping in mind that hundreds of people, equipment, supplies and fuel have to be transported to and from the rig in the safest way1. The solution implemented is based on the proven concept of integration of services. In this case, the methodology was adapted to the condition of the remote location with heli-portable logistics, in which the key factors are Logistics, managed by the Operator and Service Companies, shared Drilling Engineering, Risk Management, identification and selection of new technologies and pre-defined communication and responsibilities flowchart among Operator, Service Companies and Rig Contractor. The initial time planned for the exploratory Oglan 2 Dir well was P-10: 32.7 days, P-50: 37.4 days and P-90: 49 days with an initial estimated NPT < 15%. The total duration of the well was 38.1 days, with an NPT of 15% due to operational difficulties encountered while acquiring downhole data and other operational events; however, 0% NPT was related to heli-portable logistics. Pre-established communication and responsibilities flowchart together with risk management allowed the achievement of goals and targets: coring 220 feet of Hollin Formation (main well target), acquire LWD on all the section and WL open hole logs in 81/2" section and, the most relevant goal, take fluid samples from Hollin and Napo Formations using a Saturn Tool. This methodology and concepts can be used as a guide for any heli-portable and/or remote operations with a pre-defined management and communication workflow among Operator, Service Companies and Rig Contractor reaching the main goal to meet AFE time and cost.