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.
