摘要
在煤层气勘探中,煤心数据是评价煤层气潜力的重要指标,因此,在煤层气录井中,卡准煤层位置、计算煤层厚度是煤层气测井工作中的一项基础工作。有研究表明,在地质条件复杂及钻井困难的环境下,全烃曲线对煤层的识别具有较高的准确性。以山西王坡V1井640-645m井段煤层判识为例,其全烃解释厚度为3.8m,与测井解释的4.0m相差0.2,与地质解释的3.7m相差0.1m,与全烃曲线校正前4.6m的解释结果比较,校正后的全烃曲线解释成果比较可靠。
During the CBM exploration, coal core data is essential in CBM potential evaluation. Thus in CBM well logging, to exactly de- termine coal seam position and thickness is the element task. Studies have shown, under the complex geological condition and difficult drilling situation, the total hydrocarbon curves have higher accuracy in coal seam verification. Taking the coal seam identification in 640m-645m sector of well V1 in Wangpo, Shanxi as an example, the coal seam thickness from total carbon curve interpretation is 3.8m, that is 0.2m less than well logging interpreted 4.0m, 0.1m more than geological interpreted 3.7m. Comparing with the interpreted result of 4.6m before the total hydrocarbon curve correction, the corrected result is more reliable.
出处
《中国煤炭地质》
2015年第2期75-77,80,共4页
Coal Geology of China
基金
国家重大油气专项(2011ZX`05040-003)
关键词
煤层气
气测录井
全烃曲线
煤层厚度
CBM
gas logging
total hydrocarbon curve
coal seam thickness
