裂缝-孔洞型碳酸盐岩凝析气井出水特征及预测  

Features and Forecast of Water Output in Fractured Vuggy Carbonate Condensate Reservoir

作　　者：康博[1,2] 张烈辉[1] 王健[1] 范坤[3] 王宏[3] KANG Bo;ZHANG Liehui;WANG Jian;FAN Kun;WANG Hong(State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China;Chengdu Northern Petroleum Exploration and Development Technology Co. Ltd., Chengdu, Sichuan 610500, China;Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China)

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500 [2]成都北方石油勘探开发技术有限公司,四川成都610500 [3]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《西南石油大学学报（自然科学版）》2017年第1期107-113,共7页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家自然科学基金(51374181);国家科技重大专项(2008ZX050054)

摘　　要：随着开采时间的增加,塔中I号坡折带上奥陶统裂缝孔洞型碳酸盐岩凝析气藏产水井数目和产水量都有所增加,从而降低了凝析气井产量,影响凝析气藏开发的整体效果。在总结塔中地区裂缝孔洞型碳酸盐岩凝析气井生产特征的基础上,利用流动物质平衡法对试采井进行能量评价,对有较强地层能量补充的试采井,利用生产气油比和天然气烃类组分的变化规律进行出水预测研究。研究结果表明,碳酸盐岩凝析气井自喷生产期间,随着地层压力下降,气油比缓慢上升,随着地层能量的补充,气油比在一段时间内会相对稳定(约4 000 m^3/t),出水前生产气油比缓慢下降至2 000 m^3/t,产水后气油比快速上升;同时,在产水前天然气烃类组分发生变化,轻质组分C_1+N_2含量降低约3%～6%,重质组分C_(7+)含量较稳定生产时增加19倍以上。With increase in production, the number and water production rate of gas wells producing water in the carbonate gascondensate reservoir increases, which reduces the recovery ratio of condensate and natural oils, and impacts the overall effect of condensate gas reservoir development. This article, based on summarizing the features of the carbonate gas- condensate wells in terms of production and water production, makes an energy evaluation of the producing test wells through the flow material balance method, and studies forecast of the water output from producing test wells, with abundant supply of formation energy,according to the changing pattern of production gas–oil ratio and natural gas hydrocarbons. The results of the evaluation prove that the production gas–oil ratio reduces significantly before water output of the carbonatite gas-condensate well; the percentage of light natural gas hydrocarbon components reduces, while that of intermediate and heavy components increases.

关 键 词：裂缝孔洞型 碳酸盐岩 凝析气藏 气油比 烃类组分 出水预测 

分 类 号：TE348[石油与天然气工程—油气田开发工程]