低渗透油藏早期试井资料解释方法研究  

An early well test interpretation method for low permeability reservoir.

作　　者：陆建林[1] 李国强[1] 李朝勇[1] 尹太恒[1] 

机构地区：[1]河南石油勘探局勘探开发研究院

出　　处：《石油勘探与开发》1999年第2期86-89,共4页Petroleum Exploration and Development

摘　　要：低渗透油藏的试井资料中，早期资料占有较大的比例，目前对这类资料尚无成熟的解释方法。通过对早期资料特征的研究，认为对早期资料校正的关键是对续流效应的校正，据此提出了新的早期资料解释方法及相应的表皮系数计算公式。该方法能同时对续流和表皮效应进行校正，从而达到正确解释早期资料的目的，它具有如下特点：①可解释低渗透油藏由于测试时间不够未出现径向流的试井资料；②用于低渗透油藏待测试井的试井设计，可缩短测试时间；③提高试井资料解释率和解释结果的精度；④可较大幅度地缩短关井测试时间，从而降低试井成本，减少关井的产量损失，提高低渗透油藏的试井工作效率。应用表明，该方法实用性、通用性较强，较好地解决了早期资料的解释难题。图３表１参７（陈志宏摘）Many well test data are early data, and there is no mature method to interpret them. In this paper, a new early well test interpretation method together with new skin factor calculating formula has been proposed by analyzing the characters of the early well test data. The new method can rectify the afterflow and skin factor effects simultaneously, and then we can achieve the purpose of interpreting early data correctly. The new method has the following properties: it can interpret the well test data which have no radial flow due to its test time is not long enough; it can be used to the well test design to shorten the shut in time; it can improve the interpreting accuracy and interpretableness of well test data and it can largely shorten the shut in time of well test, and so reduce the test cost and the production losses, and then improve the well test efficiency of low permeability reservoir. The pragmatic and commonly uses of the new method have been proved by practices, so the problem of the early well test data interpretation has been solved basically.

关 键 词：低渗透油藏 试井 早期试井 减井资料 解释方法 

分 类 号：TE353[石油与天然气工程—油气田开发工程] TE348