岩性油气藏
巖性油氣藏
암성유기장
LITHOLOGIC RESERVOIRS
2011年
5期
78-82
,共5页
测井资料%重力流沉积%岩心扫描%远端浊积岩%勘探开发
測井資料%重力流沉積%巖心掃描%遠耑濁積巖%勘探開髮
측정자료%중력류침적%암심소묘%원단탁적암%감탐개발
log data%gravity flow deposits%core scanning%distal turbidite%exploration and development
突发性重力流沉积以厚度小、类型多、致密坚硬并夹杂于正常沉积之中为特点,致使利用常规测井资料识别地层岩性和流体性质难度较大。W油田流一段是重要含油层系,通过岩心观察,发现重力流沉积非常发育,且类型多样。在对其沉积特征进行分析的基础上,基于高精度地面岩心扫描的自然伽马和密度测井曲线,提出了利用交会图法和测井曲线形态法有效区分重力流沉积与正常砂泥岩沉积的方法。最后在对重力流沉积的含油性和物性进行评价后,认为远端浊积岩是有利的勘探开发目标,指出了2个可能的含油深水浊积砂体,为该油田进一步评价挖潜提供了依据。
突髮性重力流沉積以厚度小、類型多、緻密堅硬併夾雜于正常沉積之中為特點,緻使利用常規測井資料識彆地層巖性和流體性質難度較大。W油田流一段是重要含油層繫,通過巖心觀察,髮現重力流沉積非常髮育,且類型多樣。在對其沉積特徵進行分析的基礎上,基于高精度地麵巖心掃描的自然伽馬和密度測井麯線,提齣瞭利用交會圖法和測井麯線形態法有效區分重力流沉積與正常砂泥巖沉積的方法。最後在對重力流沉積的含油性和物性進行評價後,認為遠耑濁積巖是有利的勘探開髮目標,指齣瞭2箇可能的含油深水濁積砂體,為該油田進一步評價挖潛提供瞭依據。
돌발성중력류침적이후도소、류형다、치밀견경병협잡우정상침적지중위특점,치사이용상규측정자료식별지층암성화류체성질난도교대。W유전류일단시중요함유층계,통과암심관찰,발현중력류침적비상발육,차류형다양。재대기침적특정진행분석적기출상,기우고정도지면암심소묘적자연가마화밀도측정곡선,제출료이용교회도법화측정곡선형태법유효구분중력류침적여정상사니암침적적방법。최후재대중력류침적적함유성화물성진행평개후,인위원단탁적암시유리적감탐개발목표,지출료2개가능적함유심수탁적사체,위해유전진일보평개알잠제공료의거。
The deposits of sudden event gravity flow which are not only rigid and compact but also have characteristics of thin thickness and complex sedimentation type are generally mingled with normal deposits,which makes the recognition of lithology and fluid property very difficult with conventional log data.According to core observation,it is considered that the first member of Liushagang Formation in W oilfield which is the important oil-bearing series developed large amount of various types of gravity flow deposits.Based on the analysis of depositional characteristics,the methods of crossplot and logging curve shape are proposed to distinguish effectively the the event gravity flow deposits from the normal deposits by using the high precision gamma ray and density curve of subaerial core scanning.Finally the oil possibility and physical property of the gravity flow deposits are evaluated,and the result shows that distal turbidite is the favorable exploration and development target and two possible oil-bearing turbidite sand bodies are pointed out,which provides basis and supports for further evaluation and tapping the potential of the oilfield.
