气测录井技术的进展及气测资料新用途的探讨

Study on Development of Gas-logging Technique and New Usage of Gas-logging Information

摘要:

过去,由于气测录井技术的限制,气测数据被认为是不可靠的,其应用的范围也因此受到了制约。现在,随着气测获取及分析技术所取得的进步,可以得到更为准确的气测数据。为了能充分利用气测资料,通过分析气测数据不同比值的深度曲线图,利用曲线的形态及趋势可以划分岩性界面、划分油气水界面、判断地层流体的渐变、推测盖层的封堵效率、预测石油是否遭受了生物降解以及对不同层位的油源进行初步分析。

Abstract:

In the past, due to limitation of gas-logging technique, gas-logging data was thought to be unreliable, which limited its usage. Accompanying with progress of gas-logging data aquisation and analysis technology, more accurate datas can be gained now. In order to use gas-logging information fully, through analyzing different ratio depth plot of gas-logging datas, and using curve occurrence and trend, lithologic bundary and oil-gas interface are divided, fluid evolution is judged, cap rock plugging effiiciency is guessed, oil suffered biodegradability or not is predicated, and oil-source in different strata are analyzed primarily.