中子伽马测井在辽河盆地寻找剩余气中的应用  

APPLICATION OF NEUTRON GAMMA LOGGING IN SEARCHING FOR REMAINING GAS RESERVES IN THE LIAOHE BASIN

作　　者：王国勇[1] 

机构地区：[1]南京大学地球科学系

出　　处：《天然气工业》2007年第1期51-53,共3页Natural Gas Industry

摘　　要：天然气的开采规律远不如原油生产容易把握,现辽河盆地大部分断块油气藏属于复合型油气藏,并已处于开发中后期,限于勘探开发初期的种种因素,气藏的开采很不规范。中深层气藏是伴随油藏的开发而伴生出来,浅层气藏由于极少数气井的动用,造成了后期寻找剩余气难度的加大。针对这一实际,寻找剩余气的工作思路是从油气藏地质资料复查入手,将中子伽马测井原理与气藏动用情况分析相结合,同时注意不同油气田、不同层位气藏及老井井身特征等最基本因素(如孔隙度、含气饱和度、储层泥质含量、套管尺寸、压井液等等)对其影响。实践证明,这为辽河盆地开发剩余气资源提供了新思路,具有一定的推广应用价值。Most of the fault-block reservoirs in the Liaohe Basin have been in the middle-late stage of development. The production of these gas reservoirs dose not conform to the standard, due to the constraint of various factors at the initial stage of exploration and development. The medium-deep gas reservoirs are associated with the development of the oil reservoirs, and the shallow gas reservoirs are produced by a few gas wells, increasing the difficulty of searching for the remaining gas. Search of the remaining gas reserves should begin with the review of the geological information of oil and gas reservoirs, and integrate the neutron gamma logging data with the analysis of the gas reservoir production, so as to obtain the hydrogen contents of the sand reservoirs saturated with oil, gas, or water. A discrimination criteria searching for remaining gas is that the hydrogen content of sand reservoirs saturated with oil or water is much higher than that of sand reservoirs saturated with gas. Moreover, attentions should be paid to the influences of the fundamental factors, such as porosity, gas saturation, shale content, casing size, and killing fluid. Production practice shows that this is a new concept to develop the remaining gas reserves and is worthy of popularization and application.

关 键 词：辽河坳陷 天然气 剩余储量 中子伽马测井 应用 

分 类 号：P631.81[天文地球—地质矿产勘探]