【作者】 陈晓华；

【导师】 吕延防； 隋新光；

【作者基本信息】 大庆石油学院 ， 矿产普查与勘探， 2008， 博士

【摘要】 在充分利用研究区现有资料的基础上,对尚家地区构造及断裂发育、演化特征进行了系统研究,得到尚家鼻状构造是一个长期继承性发育的古构造,断裂主要有断陷期形成坳陷期继续活动的断裂、坳陷期形成的断裂、断陷期生成坳陷期和构造反转期继续活动的断裂、坳陷期形成构造反转期活动的断裂4种类型。通过油气藏解剖得到,尚家油田扶杨油层油气藏类型主要有断块、断层遮挡、断层—岩性3种类型。其中以断层—岩性油气藏最多,其次是断层遮挡油气藏,最少是断块油气藏,油气分布在平面上主要在尚家鼻状构造的鼻尖部位及其附近,油水分布关系复杂,主要受砂体与断裂沟通情况及砂体分布连续性的控制。通过油源对比得到:尚家地区扶杨油层原油主要来自三肇凹陷青一段源岩,其次为青二三段源岩;通过源岩发育及其地化特征研究得到,三肇坳凹陷青山口组源岩向尚家地区的供油量约为1.1×108t。通过油气成藏条件、时空匹配关系研究得到:尚家地区扶杨油层油气运聚成藏模式是三肇凹陷青山口组源岩生成的油气在超压作用下通过T2-T22断裂向下伏扶杨油层中倒灌运移,然后在浮力作用下沿着被断裂沟通的砂体进行侧向运移至尚家鼻状构造的断块、断层遮挡和断层岩性圈闭中聚集成藏;尚家地区葡萄花油层中油气运聚成藏模式应是尚家地区扶杨油层中的油在浮力作用下通过T2-T11断裂向上运移至葡萄花油层,再沿砂体短距离侧向运移至断块、断层遮挡和断层—岩性圈闭中聚集成藏;尚家地区泉二段油气运聚成藏模式应是沿着扶杨油层油气运移至尚家地区的油进入与其沟通的泉二段高断块圈闭中聚集成藏;尚家地区杨一组中的天然气成藏模式应为沙河子组源岩生成的天然气在浮力作用下沿着T5-T2或T4-T2断裂向上运移至杨一组中的断层圈闭中聚集成藏。通过油气分布与成藏条件时空匹配关系研究得到,尚家油田扶杨油层油成藏主要受圈闭是否发育,圈闭是否位于油气运移路径上和圈闭内砂体是否发育3个因素控制;葡萄花油层油成藏主要受圈闭发育、圈闭位于扶杨油区上方、过T2-T11(反转期活动)断裂连通和圈闭内砂体发育4个因素控制,泉二段油成藏主要受圈闭发育,高断块圈闭与扶杨油气运移路径对接和圈闭内砂体发育3个因素控制,杨大城子天然气成藏主要受圈闭发育、圈闭之下有沙河子组源岩发育、有过T5或T4至T2断裂连通和圈闭内砂体发育4个因素控制。通过实测样品数据得到,尚家地区扶杨油层储层样品流体包裹体均一温度主要分布在115-120℃,结合该区地层埋藏史、热史、源岩生排烃史和断裂活动史恢复结果得到,尚家地区扶杨油层、葡萄花油层和泉二段油气成藏的主要时期应为明水组沉积末期,杨大城子油层天然气成藏的主要时期为泉头组—青山口组沉积时期。综合油气成藏主控因素得到,尚家地区扶杨油层Ⅰ类有利区3个,面积52.2Km2,油资源量1507×104t,Ⅱ类有利区5个,面积13.3 Km2,油资源量267×104t。葡萄花油层Ⅰ类有利区4个,面积9.5 Km2,油资源量113×104t,Ⅱ类有利区3个,面积12.5Km2,油资源量149×104t。泉二段地层Ⅰ类有利区2个,面积3.7 Km2,油资源量107×104t,Ⅱ类有利区1个,面积3.0 Km2,油资源量43×104t。杨大城子组天然气有利区1个,面积2.2 Km2。更多还原

【Abstract】 With the detailed application of the available datas in working area ,systematically study and the research of the stucture and fault development、evolution features of Shangjia region, the conclusion of Shangjia nose structure is a long-term inherited development paleostructure and the faults of it have four types ( generated in rift stage and still activing in depression stage、generated in depression stage、generated in rift stage and still activing in structure reversal stage、generated in depression and still activing in structrue reversal stage ) has been come up with .With the target reservoirs researched , Fuyang Oil Layer Reservoir types mainly have three types,they are: fault、fracture、fault-lithology reservoir in Shangjia Oilfield. Among them the fault-lithology reservoir type is the most ,second is fracture reservoir,the least is fault reservoir,oil and gas distribution is mainly situated near or tip of the nose of Shangjia nosing structure. The relationship of oil and gas distribution is complex, dominately controled by sandbody and fault connection and the continuity of sandstone .Through oil sources comparison we abtain that crude oil of Fuyang oil layer in Shangjia region chiefly stem from k1q1 in Sanzhao Sag, secondly stem from k1q2; By means of distribution and geochemical features of sources we abtain that Qingshankou Formation source rock in Sanzhao provide hydrocarbon amount to Shangjia Region about 1.1×103t. Through the research of the relationship of time and space configuration , oil &gas migration and accumulation models of Fuyang oil layer in Shangjia Region are that oil and gas generated by Qingshankou Formation source rock in Sanzhao Sag through T2-T22 fault migrate downward to Fuyang reservoir by overpressure action. Then migrate laterally through sands connected by fault by buoyancy action to fault、fracture、fault-lithology trap of Shangjia nosing structure and accumulate reservoir; migration and accumulation models of Putaohua oil layer in Shangjia Region are that oil-gas of Fuyang oil layer in Shangjia region migrate upward through T2-T11 fault by buoyancy action to Putaohua oil layer, then migrate laterally through sands by short distance to fault、fracture、fault-lithology trap of Shangjia nosing structure and accumulate reservoir; migration and accumulation model of k1q2 in Shangjia region is that migrate through Fuyang oil layer to Shangjia region into connected with k1q2 high block trap and accumulate reservoir; Natural gas migration and accumulation model of Yang1 Formation in Shangjia region is that gas generated by Shahezi group sourcerock action migrate upward through T5-T2 or T4-T2 fault by buoyancy to fault trap of Yang1 group and accumulate reservoir. Through the study of the relations between the distribution of oil and gas and reservoir conditions, the accumulation of Fuyang oil layer in Shangjia Oil field was controled by 3 factors what are that whether the traps were development, whether the traps were located in the path of oil and gas migration and whether the sand was rich in the traps. The accumulation of Putaohua oil layer was controlled by 4 factors, what were that traps were development, the traps were located above the F oil region, the faults of between T2 and T11 (reversal stage activities) were connectivity and the sand was rich in the traps. The accumulation of K1q2 oil was controlled by 3 factors, what were that the traps were development, high block traps and the oil and gas of Fuyang oil layer migration ways were connectivity, and the sand was rich in the traps.The accumulation of the gas of Yangdachengzi oil layer was controlled by 4 factors, what were that the traps were development, the development Shahezi Formation source rock was under the traps, there were faults which connected T5 or T4 and T2, and the sand was rich in the traps.Through actual measurement, reservoil samples fluid inclusion homogenizaion temperature of Fuyang oil layer in Shangjia Region mainly distribute 115-120℃, mainly paticular period of reservoir forming of Fuyang oil layer、Putaohua oil layer and k1q2 in Shangjia Region is the end of Mingshui group sedimentation period, mainly paticular period of gas reservoir forming of Yangdachengzi oil layer is the end of Quantou group-Qingshaokou Formation sedimentation period. Synthesize main controlling factors,we obtain thatⅠt ype range of profitability of Fuyang oil layer in Shangjia region has three, that area is 52.2Km2,resources amount is 1507×104t,Ⅱtype range of profitability has five, that area is 13.3Km2,resources amount is 267×104t.Ⅰtype range of profitability of Putaohua oil layer has four, that area is 9.5Km2,resources amount is 113×104t,Ⅱtype range of profitability has three, that area is 12.5Km2,resources amount is 149×104t.Ⅰtype range of profitability of k1q2 layer has two, that area is 3.7Km2,resources amount is 107×104t,Ⅱtype range of profitability has one, that area is 3.0Km2,resources amount is 43×104t.Gas range of profitability of Yangdachengzi group has one, that area is 2.2Km2.更多还原