摘要
纯梁地区位于东营凹陷西南部的博兴洼陷 ,1 965年至 1 998年已发现下第三系的 9个油田和 1个气田 ,但油气探明程度仍低于 50 % ,具有继续滚动勘探开发的资源基础。纯梁地区具有典型的复式环状平面油气分布规律和纵向“三段式”压力分布规律 ,浅层和中深层形成“砂储泥盖”式常压油气藏和异常高压油藏 ,深层发育异常高压特种油气藏。所谓特种油气藏位于“三段式”压力剖面最下部 ,由“砂泥孔缝等压储渗体”与上覆泥岩盖层及侧向遮挡条件配合而形成特殊圈闭条件。认为纯梁地区的石村断裂带和博兴断裂带附近以及洼陷内是近期勘探浅—中深层小型牵引构造类油气藏和岩性 构造及岩性 地层类油气藏的重要潜力区 ;博兴洼陷西北部高 7井区较深层存在高含油气丰度的特种油气藏 ,博兴洼陷西北部是勘探后期扩大勘探领域、寻找新类型油气藏的重要潜力区。图 4表 2参 2(王孝陵摘 )
Chunliang oil zone is located in the southwest of Dongying seg, where nine oil fields and one gas field of Early Tertiary have been found from 1995 to 1998. However, the exploration degree of oil and gas resources over there is still less than 50%, indicating there exists the resources basis for continuing progressive exploration and development. Chunliang is a typical multiple oil gas accumulation zone with pressure exhibiting a “three segment” distribution pattern —in shallow and medium deep formations, sandstone reservoir mudstone cap oil gas pools with conventional pressure or extra high pressure exist; in deep formations formed special oil gas pools with extra high pressure, which is located in the bottom most of the “three segment” pressure profile and created special traps due to the combinational function of the “sand mudstone pore fracture isopressure reservoir” and the overlied mudstone cap and lateral barrier. This paper concludes that the Shicun and Boxing fault zones and boxing subseg of Chunliang is an important potential target for exploring small drag structural pools, lithological stratigraphic pools, lithologic structural pools and subtle lithological pools. In deep formation at Well Gao 7 of northwestern Boxing subseg, there exist special oil and gas pools with high oil and gas abundance. This northwestern Boxing subseg will be the target for later exploration extension and the important potential region for prospecting new types of oil and gas pool.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1999年第6期18-22,共5页
Petroleum Exploration and Development
关键词
滚动勘探
油气勘探
东营凹陷
纯梁地区
Dongying seg, Boxing, Rolling exploration and development, Deep zone exploration, Exploration region
