#TITLE_ALTERNATIVE#

• Main Author: ICHSAN (NIM : 12214052), CHAIRUL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26225
• Institution: Institut Teknologi Bandung

In oil and gas field development, pipeline network planning is essential task. The objective is to find the feasible route and size of the pipe with minimal cost so as to increase the economic value of the field. In this study a computer software based on Visual Basic programming language was developed to optimize the route and size of the pipe for both production case and injection case. Optimization in the production case is to optimize the pipeline that flows the fluid from each production well to a sink point. Optimization in the case of injection is to optimize the pipelines that flows the fluid from a source point to each injection well. The design of pipelines is assumed to be conducted in desert environments where there are no physical barriers so there are no constraints on geometry but the inclination still take into account. <br /> <br /> Optimization of the pipeline route using Kruskal Algorithm assuming that each point of the coordinates of the well and sink / source is a node and a pipe is an edge. It starts by finding the shortest distance between the nodes and then sort them on condition that there is no circuit to form a minimum spanning tree. Then it is corrected for the direction of the node between the wells, from wells to sinks, from source to wells, and from the point of intersection to the well or vice versa, and the edges are sorted to form a continuous line that forms pipeline network and to make it easy to calculate flow rate in each pipe segment using self-built algorithm, that is CRL Algorithm. <br /> <br /> The software is also able to calculate the pressure loss from the fluid flow in the pipeline to determine the wellhead pressure needed to flow the fluid at a certain rate for a given sink / source pressure. For production case where the flowing fluid is 2-phase oil-gas pressure loss is calculated using Beggs and Brill method. In the case of the injection where the flowing fluid is 1-phase gas the pressure loss is calculated using general gas pressure loss equation. <br /> <br /> The optimization of pipe diameter is based on the erosional velocity and cost of each pipe segment. The smaller the diameter of the pipe the lower the cost but the greater the ratio of the erosional velocity, so it is necessary to find the optimum diameter with the least cost but still fulfill the erosional velocity constraint. <br /> <br /> It is expected that this software will become a generic tool that can optimize pipeline route, pipe diameter and calculate the pressure loss so that it can assist engineers in designing the optimum pipeline from technical and economic point of view so as to increase the economic value of the field.