谭廷栋
Tan Tingdong(Scientific Research Institute of Petroleum Exploration & Development;

• 1:石油工业部石油勘探开发科学研究院

摘要(Abstract)：

煤成气是天然气的一个重要组成部分，是我国天然气勘探的新领域。煤成气与油型气的化学成分及运移、聚集规律基本相同。因此，含煤成气地层与含油型气地层的测井响应是相同的，用于勘探油型气的测井系列同样可以用于勘探煤成气。当然，根据测井资料不能直接区别煤成气与油型气。但是，多数煤成气与煤层有关，测井不仅是勘探气层的有效方法，而且也是勘探煤层的重要手段，可以通过煤层识别煤成气。我国某煤成气田采用的测井系列包括：补偿地层密度测井、补偿中子测井、井眼补尝声波测井、双感应-球形聚焦测井、自然电位测井、自然伽马测井、井径测井。利用测井信息识别砂岩气层的分辨率高于识别泥质砂岩气层的分辨率，但仍然能够发现泥质砂岩气层。一个砂岩气层的测试结果是：产气62.7万m~3/d，产油15.3m~3/d，产水6.8m~3/d。三个泥质砂岩气层的合试结果是：产气57万m~3/d，产油微量，产水3.3m~3/d。实践表明，将上述测井系列和识别煤成气的方法用于勘探煤成气，获得了显著的地质效果。
ABSTRACT Gases from coal measures constitutes an important part of natural gases, and is a new domain for natural gas exploration in our country. Gases from, coal measures and gases from oil beds are basically similar in chemical compositions and regularities of migration and accumulation. So the formations with gases from coal measures and formations with gases from oil beds would have same response to logging. The logging series for explorating gases from oil beds, therefore, can also be used for explorating gases from coal measures. However, gases from coal measures are related to coal measures. Logging is nol only an effective method for explorating gas formations but also an important tool in exploration of coal seams. Gases from coal measures can be identified with the data from coal seams. The logging scries used in some fields for gases from coal measures include, compensated formation density logging, compensated neutron logging, BHC acoustilog (borehole compensated sonic logging) ,dual induction-focused logging, natural potential logging, natural gamma-ray logging and caliper logging. Logging data is more effective in identifying gas bearing sand than argillaceous gas-bearing sand, however it can find argillaceous gas-bearing sand. Testing results from one gas-bearing sand are. gas production 627000m3/d, Oil production 15.3m3/d, water production 6.8m3/d. The combination logging results of three argillaceous gas-bearing sands are. gas prodnction 570000m3/d, with trace oil production, and water production 3.3m3/d. Practice proved that applying the logging series and identifying method for gases from coal measures described above, have provided significant geological results.

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Abstract:

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作者(Authors): 谭廷栋
Tan Tingdong(Scientific Research Institute of Petroleum Exploration & Development;

DOI: 10.19597/j.issn.1000-3754.1987.02.012

参考文献(References)：

• 〔1〕戚厚发：含煤地层天然气资原类型，《天然气工业》，第6卷，第1期，1986。
• 〔2〕O.Serra:《Fundamentals of Well-Log Interpretation》, ELSEVIER, 1984
• 〔3〕谭廷栋：测井找气新技术，《物探与化探》，第9卷，第5期，1985。