| darkbao |
2011-03-29 12:38 |
spe 137839 原文及翻译
自己翻译的，水平有限请见谅
title Defining Horizontal Well Objectives in Tight and Unconventional Gas Reservoirs
题名 致密气藏和非常规气藏中，水平井开发目的的确定
Abstract:
Horizontal wells have become the “industry standard” for unconventional and tight formation gas
reservoirs. Because these reservoirs have poorer quality pay it takes a well planned completion and
fracture stimulation(s) to make an economic well. Even in sweet spots in unconventional and tight gas
reservoirs good completion and stimulation practices are required to achieve economic success. But what
are the objectives of horizontal wells and how do we relate the completion and stimulation(s) to
achieving these goals? How many completions/stimulations do we need for best well performance and/or
economics? How do we maximize the value from horizontal wells? When should a horizontal well be
drilled longitudinally or transverse? These are just a few questions to be addressed in this paper.
This paper focuses on some of the key elements of well completions and stimulation practices as
they apply to horizontal wells. Economic optimization studies were conducted for tight gas reservoirs
highlighting the importance of lateral length, number of fractures, inter-fracture distance, fracture half-
length, and fracture conductivity. In addition to the tight gas completion and stimulation considerations,
network complexity will also be considered. These results will be used to develop a horizontal well
decision tree for evaluating the various drilling, completion, and stimulation issues encountered in
horizontal wells in tight and unconventional gas reservoirs. Field examples will be used to highlight these
strategies.
摘要
水平井已成为非常规和低渗透致密地层气藏的行业标准。因为这些气藏的低质量回报，需要完善计划的完井和压裂增产来钻探具有经济效益的井。甚至在非常规和低渗透气藏中的不含硫化氢的地方，要达到好的经济效益也需要有良好的完井和增产施工。但是，哪些是水平井的对象，以及我们怎么把完井和增产结合起来已到达这些目的？我们需要多少完井和增产措施来获得最好的井动态和经济效益？我们怎么才能在水平井中获得最大化的价值？水平井什么时候纵向钻进，什么时候横向钻进？这些只是本文涉及的一小部分问题。
本文着重于应用于水平井的完井、增产实施的一些关键之处。为低渗透气藏实施的经济效益最优化研究强调了横向长度、裂缝数量、裂缝间距、裂缝半长和裂缝导流能力的重要性。网络复杂性也被添加于低渗透气藏的完井和增产因素中。这些结论会被用于开发一个水平井决策树来评估在低渗透和非常规气藏中的水平井中发生的不同的钻井、完井及增产结果。气田实例会被用于强调这些决策。
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