Abstract High?quality reservoirs prediction of fan delta in the Triassic Baikouquan Formation in west slope of Mahu sag,Junggar Basin. Because of the physical properties of fan delta sandstone of Baikouquan Formation in Fengnan area of west slope of Mahu sag vary greatly in space,it is difficult to predict high?quality reservoirs. In this study,under the guidance of sedimentary petrology,seismic inversion and interpretation theory,high?resolution sequence stratigraphy,sedimentary microfacies description and high?quality reservoir seismic inversion are carried out by comprehensive utilization of well logging,core and 3D seismic data. The fourth?order sequence stratigraphic framework of Fengnan area was established,and the filling process of multi?stage transgression and regression in fan delta was identified. The result indicates that the SSQ3 and SSQ5 are the favorable sequences for high?quality reservoirs development. Sedimentary microfacies including distributary channel and inter?channel bay in fan delta plain,subaqueous distributary channel,mouth bar and sheet sand in fan delta front were identified. It was pointed out that fan delta plain is an optimum reservoir facies belt.The reservoir facies?controlled impedance inversion of separated layers in PSTM was carried out by applying the constraints of vertical boundary of high?resolution sequence stratigraphy and lateral boundary of sedimentary facies to improve reservoir prediction accuracy. Five high?quality reservoir development areas are predicted in the sequence of SSQ3 and SSQ5,and three wells were proposed for drill,which was later proven to have industrial oil flow during drilling.
Fund:Financially supported by the Henan Postdoctoral Foundation(No.1902038)
Corresponding Authors:
Li Quan,born in 1982,is a senior engineer in CNOOC. He is mainly engaged in research on seismic sedimentology. E?mail: 55066070@qq.com.
About author: Sang Lin?Xiang,born in 1973,is a senior engineer in CNOPC. He is mainly engaged in research on oilfield development. E?mail: slx_zy@petroChina.com.cn.
Cite this article:
Sang Lin?Xiang,Liu Jun,Wang Gui?Wen et al. High￣quality reservoirs prediction of fan delta in the Triassic Baikouquan Formation in west slope of Mahu sag,Junggar Basin[J]. JOPC, 2020, 22(6): 1053-1064.
Sang Lin?Xiang,Liu Jun,Wang Gui?Wen et al. High￣quality reservoirs prediction of fan delta in the Triassic Baikouquan Formation in west slope of Mahu sag,Junggar Basin[J]. JOPC, 2020, 22(6): 1053-1064.
[1] 陈美伊，秦月霜，王建民，陈守田，方石. 2016. 基于等时相控反演的致密砂岩储集层地震识别方法. 石油地球物理勘探， 51(4): 782-791. ［Chen M Y，Qin Y S，Wang J M，Chen S T，Fang S. 2016. Tight sandstone reservoir identification based on isochronal phase-controlled inversion. Oil Geophysical Prospecting， 51(4): 782-791］
[2] 曹小璐，钟厚财，刘啸虎，黄友华，李永强. 2017. 准噶尔盆地玛湖地区三叠系百口泉组优质储集层预测. 石油地球物理勘探，52(增 刊1): 123-127. ［Cao C L，Zhong H C，Liu X H，Huang Y H，Li Y Q. 2017. High-quality reservoir prediction for Triassic Baikouquan Formation in Mahu Depression，Junggar Basin. Oil Geophysical Prospecting，52(Supplement 1): 123-127］
[3] 戴婉薇，范乐元，胡圣利，鲍闵慧子，孔庆东. 2017. 基于地质统计学反演和储集层分类的相控储集层建模方法研究及应用. 地质科技情报， 36(1): 236-241. ［Dai W W，Fan L Y，Hu S L，Bao M H Z，Kong Q D. 2017. Facies-controlled reservoir modeling method based on geostatistical inversion and reservoir classification. Geolo￣gical Science and Technology Information， 36(1): 236-241］
[4] 董艳蕾，朱筱敏，耿晓洁，汪海，王茂文，姜青梅，杜远宗. 2015. 利用地层切片研究陆相湖盆深水滑塌浊积扇沉积特征. 地学前缘， 22(1): 386-396. ［Dong Y L，Zhu X M，Geng X J，Wang H，Wang M W，Jiang Q M，Du Y Z. 2015. Using the stratal slice to study the depositional of deep-water slumped turbidite fans in continental lake basin. Earth Science Frontiers， 22(1): 386-396］
[5] 宫清顺，黄革萍，倪国辉，孟祥超，丁梁波. 2010. 准噶尔盆地乌尔禾油田百口泉组冲积扇沉积特征及油气勘探意义. 沉积学报， 28(6): 1135-1144. ［Gong Q S，Huang G P，Ni G H，Meng X C，Ding L B. 2010. Characteristics of alluvial fan in Baikouquan Formation of Wuerhe Oil Field in Junggar Basin and petroleum prospecting significance. Acta Sedimentologica Sinica， 28(6): 1135-1144］
[6] 胡青，刘洛夫，万青青，汪洋，季焕成，宋光建，张旺. 2017. 准噶尔盆地乌尔禾—风南地区百口泉组储集层有利成岩相. 东北石油大学学报， 41(5): 81-89. ［Hu Q，Liu L F，Wan Q Q，Wang Y，Ji H C，Song G J，Zhang W. 2017. Favorable diagenetic facies of Bai￣kouquan Formation in Wuerhe-Fengnan area，Junggar Basin. Journal of Northeast Petroleum University， 41(5): 81-89］
[7] 贾凌霄，王彦春，菅笑飞，吕鹏，田黔宁，谢玮. 2016. 叠后地震反演面临的问题与进展. 地球物理学进展， 31(5): 2108-2115. ［Jia L X，Wang Y C，Jian X F，Lü P，Tian Q N，Xie W. 2016. Problems and progress in post-stack seismic inversion. Progress in Geophysics， 31(5): 2108-2115］
[8] 匡立春，唐勇，雷德文，吴涛，瞿建华. 2014. 准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组扇控大面积岩性油藏勘探实践. 中国石油勘探， 19(6): 14-23. ［Kuang L C，Tang Y，Lei D W，Wu T，Qu J H. 2014. Exploration of fan-controlled large-area lithologicoil reservoirs of Triassic Baikouquan Formation in slope zone of Mahu depression in Junggar Basin. China Petroleum Exploration， 19(6): 14-23］
[9] 雷振宇，鲁兵，蔚远江，张立平，石昕. 2005. 准噶尔盆地西北缘构造演化与扇体形成和分布. 石油与天然气地质， 26(1): 86-91. ［Lei Z Y，Lu B，Wei Y J，Zhang L P，Shi X. 2005. Tectonic evolution and development and distribution of fans on northwestern edge of Junggar Basin. Oil & Gas Geology， 26(1): 86-91］
[10] 林畅松，刘景彦，刘丽军，张韬，李喜臣. 2002. 高精度层序地层分析: 建立沉积相和储集层规模的等时地层格架. 现代地质， 16(3): 276-281. ［Lin C S，Liu J Y，Liu L J，Zhang T，Li X C. 2002. High resolution sequence stratigraphy analysis: Construction of chronostratigraphic sequence framework on facies and reservoir scale. Geoscience， 16(3): 276-281］
[11] 马永平，黄林军，滕团余，谭开俊，王国栋，尹路. 2015. 准噶尔盆地玛湖凹陷斜坡区三叠系百口泉组高精度层序地层研究. 天然气地球科学， 26(1): 33-40. ［Ma Y P，Huang L J，Teng T Y，Tan K J，Wang G D，Yin L. 2015. Study on the high-resolution sequence stratigraphy of Triassic Baikouquan Formation in the slope zone of Mahu depression in the Junggar Basin. Natural Gas Geoscience， 26(1): 33-40］
[12] 牛聪，张益明，王迪，张玉华，孙林洁，崔维. 2017. LA地区盒8段优质储集层的特征与分布预测. 石油地球物理勘探， 52(3): 591-598. ［Niu C，Zhang Y M，Wang D，Zhang Y H，Sun L J，Cui W. 2017. Prediction of high-quality reservoir characteristics and distribution in the area LA. Oil Geophysical Prospecting， 52(3): 591-598］
[13] 潘兰，贺剑波，钱鹏. 2018. 叠后地质统计学反演预测致密砂岩厚度. 长江大学学报(自然科学版)， 15(3): 36-40. ［Pan L，He J B，Qian P. 2018. Application of post-stack geostatistical inversion in predicting the tight sandstone thickness. Journal of Yangtze University(Natural Science Edition)， 15(3): 36-40］
[14] 瞿建华，张顺存，李辉，张磊，唐勇. 2013. 准噶尔盆地玛北地区三叠系百口泉组油藏成藏控制因素. 特种油气藏， 20(5): 51-56. ［Qu J H，Zhang S C，Li H，Zhang L，Tang Y. 2013. Control factors of the Triassic Baikouquan reservoirs in Mabei area of Junggar Basin. Special Oil & Gas Reservoirs， 20(5): 51-56］
[15] 于兴河，瞿建华，谭程鹏，张磊，李晓路，高照普. 2014. 玛湖凹陷百口泉组扇三角洲砾岩岩相及成因模式. 新疆石油地质， 35(6): 619-627. ［Yu X H，Qu J H，Tan C P，Zhang L，Li X L，Gao Z P. 2014. Conglomerate lithofacies and origin models of fan deltas of Baikouquan Formation in Mahu sag，Junggar Basin. Xinjiang Petro￣leum Geology， 35(6): 619-627］
[16] 张昌民，尹太举，唐勇，郭旭光，赵康，潘进，陈美玲. 2020. 准噶尔盆地西北缘及玛湖凹陷沉积储集层研究进展. 古地理学报， 22(1): 129-146. ［Zhang C M，Yin T J，Tang Y，Guo X G，Zhao K，Pan J，Chen M L. 2020. Advances in sedimentological reservoir research in Mahu sag and northwest margin of Junggar Basin. Journal of Palaeogeography(Chinese Edition)， 22(1): 129-146］
[17] 张善文. 2006. 济阳坳陷第三系隐蔽油气藏勘探理论与实践. 石油与天然气地质， 27(6): 731-761. ［Zhang S W. 2006. Exploration theory and practice of the Tertiary subtle reservoirs in Jiyang depression. Oil & Gas Geology， 27(6): 731-761］
[18] 张顺存，邹妞妞，史基安，常秋生，鲁新川，陈波. 2015. 准噶尔盆地玛北地区三叠系百口泉组沉积模式. 石油与天然气地质， 36(4): 640-650. ［Zhang S C，Zou N N，Shi J A，Chang Q S，Lu X C，Chen B. 2015. Depositional model of the Triassic Baikouquan Formation in Mabei area of Junggar Basin. Oil & Gas Geology， 36(4): 640-650］
[19] 周心怀，王德英，张新涛. 2016. 渤海海域石臼坨凸起两个×108￣t级隐蔽油气藏勘探实践与启示. 中国石油勘探， 21(4): 30-37. ［Zhou X H，Wang D Y，Zhang X T. 2016. Two 100￣￣million-ton class subtle reservoirs in Shijiutuo uplift，Bohai Sea exploration practices and enlightenments. China Petroleum Exploration， 21(4): 30-37］
[20] Baum G，Vall P. 1988. Sequence stratigraphic concepts applied to Paleogene outcrops，Gulf and Atlantic Basins. In: Wilgus C，Hastings B，Kendall C， et al(eds). Sea Level Change: An Integrated Approach. Tulsa: SEPM Special Publication， 42(1): 309-327.
[21] Carroll A，Liang Y，Graham S，Xiao X C，Hendrix M，Chu W M，Mc Knight C. 1990. Junggar Basin，northwest China: Trapped Late Paleozoic ocean. Tectonophysics， 181(1-4): 1-14.
[22] Carroll A，Graham S，Hendrix M，Ying D，Zhou D. 1995. Late Paleozoic tectonic amalgamation of northwestern China: Sedimentary record of the northern Tarim，northwestern Turpan and southern Junggar Basins. Geological Society of America Bulletin， 107(5): 571-594.
[23] Imin A，Tang Y，Cao J，Chen G Q，Chen J，Tao K Y. 2016. Accumulation mechanism and controlling factors of the continuous hydrocarbon plays in the Lower Triassic Baikouquan Formation of the Mahu Sag，Junggar Basin，China. Journal of Natural Gas Geoscience， 1(4): 309-318.
[24] Jia H B，Ji H C，Wang L S，Gao Y，Li X W，Zhou H. 2017. Reservoir quality variations within a conglomeratic fan-delta system in the Mahu sag，northwestern Junggar Basin: Characteristics and controlling factors. Journal of Petroleum Science and Engineering， 152(3): 165-181.
[25] Jia H B，Ji H C，Wang L S，Gao Y，Wang Z K. 2018. Controls of a Triassic fan-delta system，Junggar Basin，NW China. Geological Journal， 53(6): 3093-3109.
[26] Posamentier H W，Allen G. 1993. Variability of the sequence stratigraphic model: Effects of local basin factors. Sedimentray Geology， 86(1-2): 91-109.
[27] Tan C P，Yu X H，Liu B B，Qu J H，Zhang L，Huang D J. 2017. Conglomerate categories in coarse-grained deltas and their controls on hydrocarbon reservoir distribution: A case study of the Triassic Baikouquan Formation，Mahu Depression，NW China. Petroleum Geo￣science， 23(4): 403-414.
[28] Zeng H L，Ambrose W A. 2001. Seismic sedimentology and regional depositional systems in Miocene Norte，Lake Maracibo，Venezuela. The Leading Edge， 20(11): 1260-1269.
