科技导报
科技導報
과기도보
SCIENCE & TECHNOLOGY REVIEW
2010年
8期
60-64
,共5页
余宏忠%王玉静%江涛%揣嫒媛%杨海风
餘宏忠%王玉靜%江濤%揣嬡媛%楊海風
여굉충%왕옥정%강도%췌애원%양해풍
渤中凹陷%古近系%生屑云岩%碎屑岩
渤中凹陷%古近繫%生屑雲巖%碎屑巖
발중요함%고근계%생설운암%쇄설암
Bozhong depression%Paleogene%bioclastic dolostone%clastic rock
渤中凹陷中深层储层具有埋藏深、储集性能差以及预测难度大等特点,储集层质量是制约中深层油气勘探成效的关键.在QHD36-3油田沙二段中发现的生屑云岩和含陆源碎屑云岩等白云岩储层,其储集性能明显优于相同深度的碎屑岩储层,将成为中深层高产油气层勘探的新领域之一.研究表明,生屑云岩等白云岩储层的形成主要受古地貌、古水深等因素控制,同时距离物源区的远近影响其发育程度.建立相应的沉积模式,对以生屑云岩和含陆源碎屑云岩等白云岩为目的储层的油气勘探至关重要.
渤中凹陷中深層儲層具有埋藏深、儲集性能差以及預測難度大等特點,儲集層質量是製約中深層油氣勘探成效的關鍵.在QHD36-3油田沙二段中髮現的生屑雲巖和含陸源碎屑雲巖等白雲巖儲層,其儲集性能明顯優于相同深度的碎屑巖儲層,將成為中深層高產油氣層勘探的新領域之一.研究錶明,生屑雲巖等白雲巖儲層的形成主要受古地貌、古水深等因素控製,同時距離物源區的遠近影響其髮育程度.建立相應的沉積模式,對以生屑雲巖和含陸源碎屑雲巖等白雲巖為目的儲層的油氣勘探至關重要.
발중요함중심층저층구유매장심、저집성능차이급예측난도대등특점,저집층질량시제약중심층유기감탐성효적관건.재QHD36-3유전사이단중발현적생설운암화함륙원쇄설운암등백운암저층,기저집성능명현우우상동심도적쇄설암저층,장성위중심층고산유기층감탐적신영역지일.연구표명,생설운암등백운암저층적형성주요수고지모、고수심등인소공제,동시거리물원구적원근영향기발육정도.건립상응적침적모식,대이생설운암화함륙원쇄설운암등백운암위목적저층적유기감탐지관중요.
Due to the characteristics in deep buried depth,poor physical properties of reservoir and difficulty in the effective reservoir prediction,the exploration of mid-deep oil and gas in mid-deep reservoirs is constrained mainly by reservoir quality.In QHD36-3 oil field,the storage properties are significantly superior to those of clastic reservoir at the same depth,including bioclastic dolostone and terrigenous clastic dolostone discovered in the second member of Shahejie Formation,and it will be one of the new fields in the mid-deep oil and gas exploration.This study suggests that the formation of dolomite reservoir is mainly affected by paleogeomorphology,paleao-water depth,and development degree,which is affected by the distance from the source area.The bioclastic dolostone formed by chemical and biochemical depositions is distributed in shallow to deep lake areas,and the reserving spaces include interlayer fractures and solution channels.Under the guidance of the sedimentary principle,the paper proposes a mixed sedimentation model of bioclastic dolostone in the second member of Shahejie Formation in Bozhong depression and further discusses the controlling factors of the mixed sedimentation.The establishment of the corresponding deposition pattern is essential for the oil and gas exploration related with bioclastic dolostone and terrigenous clastic dolostone.