CAJ | 학술논문

使用Allan图法、泥岩涂抹因子法和断层泥比率法对大庆油田朝长地区扶余油层8条断层的侧向封闭性进行了研究,使用断面正压力结合泥岩塑性变形强度极限的方法对其垂向封闭性进行了研究,分别确定各断层在嫩江期末、明水期末和现今3个时期的侧向封闭性和垂向封闭性.嫩江期末除6号断层外其他断层均开启,便于青山口组烃源岩排出油气的充注,6号断层附近区域因其封闭而缺乏油源;明水期末断层开始封闭;到现今时期,除5号断层外其他断层均封闭,能够对已形成油藏提供很好的阻挡.5号断层3个时期对油气都缺乏有效阻挡,基本只起到了通道的作用.
사용Allan도법、니암도말인자법화단층니비솔법대대경유전조장지구부여유층8조단층적측향봉폐성진행료연구,사용단면정압력결합니암소성변형강도겁한적방법대기수향봉폐성진행료연구,분별학정각단층재눈강기말、명수기말화현금3개시기적측향봉폐성화수향봉폐성.눈강기말제6호단층외기타단층균개계,편우청산구조경원암배출유기적충주,6호단층부근구역인기봉폐이결핍유원;명수기말단층개시봉폐;도현금시기,제5호단층외기타단층균봉폐,능구대이형성유장제공흔호적조당.5호단층3개시기대유기도결핍유효조당,기본지기도료통도적작용.
Using Allan graphic method, shale smear factor method and fault gouge ratio method, this paper studied the lateral sealing characteristics of 8 faults in Fuyu reservoir in Chaochang area, Daqing oilfield. By use of the normal pressure of fault section and the intensity limit of plastic deformation of mudstone, the vertical sealing characteristics of these faults are studied. The lateral and vertical sealing degrees of these faults are identified in Nenjiang stage, later Mingshui stage and nowadays. Except fault No.6, other faults were opening in later Nenjiang stage, so it is easy to delivery oil and gas from Qingshankou source rock, and the nearby region of fault No.6 is lack of oil sources. Up to present, except fault No.5, other faults are sealed, these sealed faults play a role of barrier to hydrocarbon migration from the already existing reservoir. Because fault No.5 is lack of effective blocking for hydrocarbon migration in three periods, so it basically serves as a channel.