牛东区块C_2k火山岩油藏单井产能论证  

Demonstration on Individual Well Productivity of C_2k Volcanic Reservoir in Block Niudong

作　　者：刘启鹏[1] 王谦 冯利平 郝晓君 孙海涛 

机构地区：[1]中国石油石油勘探开发科学研究院开发所,北京100083 [2]中国石油吐哈油田分公司勘探开发研究院,新疆哈密839009

出　　处：《吐哈油气》2008年第3期255-259,共5页Tuha Oil & Gas

摘　　要：三塘湖盆地牛东区块上石炭统卡拉岗组(C_2k)油藏为吐哈油田首次发现的裂缝—孔隙型火山岩油藏,其产量变化大、递减快,生产状况极不稳定。对于这种产量递减快,生产状况极不稳定的井,如何评价其产能难度非常大。深入研究确定单井产能,对于制定合理开发技术政策,实现科学高效开发具有十分重要的指导意义。这里采用两种方法计算油井产能,方法一是利用油井递减规律,确定油井初始产量和年平均日产量的关系,通过计算油井年产量求取油井年平均日产量,用油井年平均日产量作为油井单井产能;另外一种方法就是利用典型井的米采油指数法计算油井单井产能。The reservoir of Carboniferous Kalagang formation in block Niudong of Santanghu basin is a fracture-porosity volcanic reservoir firstly found by Tuba oilfield, with the characteristics of obvious variation and dramatic decline in production as well as unstable producing situation. For such wells with dramatic production decline and unstable producing situation, how to evaluate its productivity is very difficult. Further research to determine the productivity of the individual well is of guiding significance for making reasonable development technology policies and realizing highly efficient development. Here, adopting two methods calculates the productivity of oil wells. One is using decline regularity of oil wells to determine the relation between initial production of oil wells and annual average daily production, annual average daily production can be acquired by calculating annual production of oil wells, taking annual average daily production as individual well＇ s productivity of oil wells; the other is using oil productivity index method of typical wells to calculate productivity of individual well of oil wells.

关 键 词：牛东区块 火山岩油藏 单井产能 

分 类 号：TE331.1[石油与天然气工程—油气田开发工程] P618.130.2[天文地球—矿床学]