高含硫气藏单井经济界限模型及其应用

Economic boundary model of single well and its application in gas reservoir with high sulfur content

樊芳¹ 彭钰茹² 彭光明¹

中国石化西南油气分公司勘探开发研究院，四川 成都 610081 西南石油大学经济管理学院，四川 成都 610500

Research Institute of Exploration and Development, Southwest Oil and Gas Company, SINOPEC, Chengdu 610081, China School of Economics and Management, Southwest Petroleum University, Chengdu 610500, China

油气田开发的技术经济界限是一个新油气田是否具有工业开发价值的重要指标，是油气田开发可行性分析的重要参数。文中根据高含硫气藏特点建立了总产出模型，修改了单井初期产量界限模型，并应用相关模型对某高含硫气藏开展了单井经济界限测算。测算表明，直井要求的单井经济界限最低，水平井最高；随着稳产年限的增长，单井初始产量界限降低，而单井控制地质储量和经济可采储量界限增高；对单井初始产量界限敏感性分析表明，天然气价格对单井初始产量界限影响最大。分析成果在该气藏开发技术政策研究和开发部署中得到应用。

Economic boundary of oil/gas field  developmentis an important index about which whether a new oil/gas field can be put into development and construction and whether it presents the industrial development value. The index is the important parameter of feasibility analysis on oil/gas field development. Total output model is set up and boundary model of initial production of single well is modified according to the features of gas reservoir with high sulfur content. Economic boundary estimation of single well is carried out for one gas reservoir with high sulfur content through the use of relative model. The estimation shows that the economic boundary required by vertical well is the lowest with horizontal being the highest. With the growth of stable producing life, the lower the initial production of single well is, the higher the boundary of geological reserves and economic recoverable reserves controlled by single well is. Sensitivity analysis of initial production boundary of single well shows that the influence of natural gas price is the greatest on initial production boundary of single well. Analysis results have been fully applied for the study of development policy and deployment of gas reservoir.

10.6056/dkyqt201204022