关键词: 二连油田, 低渗透砂岩, 油藏工程, 开发, 认识

Abstract: The low permeability sandstone reservoir in Erlian Oilfield has been under development for more than 10 years and kept its 70×10⁴t production stable for some years with some characteristics in development history. "Liangnan" oilfield is a typical reservoir effectively developed especially. In order to improve the development result, it progressed through perfected injection-production system, subdivided layer series of development,infilled well pattern, enhanced injection and production and adjusted water-cut and increased production. At the same time, this study of formation damage,fracture distribution and cycle water flooding was carried out. There are some successful experience and some development problem. The principle and practice of low permeability sandstone reservoir around Erlian Oilfield are careful summarized and analyzed, such as adaptability of various types of adjustment measures,arrangement of well pattern, oil formation damage, reservoir fracture, the problem of stable production, secondary development,economical benefit and application of new technology, and so on. Some problem in development are discussed, and some new knowledge about development of low permeability sandstone reservoir are offered, and some good reservoir modification to guide oil field development are advised. Those experience and knowledge are of reference value to development of the similar reservoir.

Key words: Erlian Oilfield, low permeability sandstone reservoir, reservoir engineering, development, knowledge