小断块油田的开发理论与实践以及发展趋势

THEORY AND PRACTICE IN THE DEVELOPMENT OF SMALL FAULT-BLOCK OIL FIELD AND ITS TREND OF DEVELOPMENT

小断块油田构造复杂,其开发难度远比大型油田的大。本文在大量调研的基础上,总结了国内外许多小断块油田勘探开发的成功经验、方法及实用技术,尤其是地震、地质及油藏工程方法在断层识别及钻井程序、井网、井距、完井方式、射孔、压裂等设计中的作用及成功实例。同时,针对小断块油田的复杂性特点,提出一些设想和研究内容,力求促进小断块油田的总体开发理论及开发水平的提高。

The small fault-block oil field is structurally complex, and it is far more difficult to develop such oil fields than to develop these large ones. On the basis of a large amount of investigation, this paper summarizes up the successful experiences methods and practical techniques in the exploration and development of a number of small fault-block oil fields, espicially the roles played by seismic, geological, and reservoir engineering methods in the identification of faults and the design in drilling sequences, well arrangment, well spacing, well completion, perforation and fracturing, and some actural field examples are presented, some considerations as well as items to be studied further are suggested in this paper according to the characteristics of complexities occured in the development of small fault-block oil fields, to enhance the overall theorectical aspects and the technical level of the development of small fault-block oil fields.