塔中地区奥陶系碳酸盐岩埋藏溶蚀特征及初步预测
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叠前解释技术在塔中奥陶系碳酸盐岩储集层预测中的应用熊兴银;胡太平;刘永雷;敬兵;吕东;安海亭;路鹏程【摘要】应用叠前解释技术进行塔中地区奥陶系碳酸盐岩储集层预测,可以得到更为丰富的岩性和流体信息,有利于储集层的烃类直接检测.该项技术的应用搞清了塔中地区碳酸盐岩储集层和油气的分布特征,发现了一批高产稳产井,为塔中的增储上产提供了技术保障.【期刊名称】《新疆石油地质》【年(卷),期】2011(032)003【总页数】3页(P311-313)【关键词】塔中地区;奥陶系;碳酸盐岩;叠前解释技术;储集层岩性;烃类检测【作者】熊兴银;胡太平;刘永雷;敬兵;吕东;安海亭;路鹏程【作者单位】中国石油东方地球物理公司研究院库尔勒分院,新疆库尔勒841000;中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000;中国石油东方地球物理公司研究院库尔勒分院,新疆库尔勒841000;中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000;中国石油东方地球物理公司研究院库尔勒分院,新疆库尔勒841000;中国石油东方地球物理公司研究院库尔勒分院,新疆库尔勒841000;中国石油东方地球物理公司研究院库尔勒分院,新疆库尔勒841000【正文语种】中文【中图分类】P631.445.91塔中地区碳酸盐岩储集层基质孔隙度普遍很低,储集空间主要以次生的孔洞和裂缝为主,不同规模的裂缝和孔洞配置在一起形成了多种储集层类型[1]。
本文基于AVO响应特征分析和叠前同时反演的解释技术,解决了目前碳酸盐岩储集层预测和油气检测的难题。
塔中地区AVO响应特征分析的原理是基于Zoeprrits方程的Shuey近似方程。
该方程的表达式为式中R——反射系数;θ——入射角;P——近似为零偏移距下的纵波的反射振幅,也称AVO截距,其大小决定于上下层之间的纵波波阻抗差异;G——纵波反射振幅随入射角的变化梯度,也称AVO斜率,其大小取决于泊松比的变化。
天 然 气 工 业Natural Gas Industry 第41卷第3期2021年 3月· 10 ·走滑断裂对碳酸盐岩储层和油气藏的控制作用——以塔里木盆地北部坳陷为例汪如军 王轩 邓兴梁 张银涛 袁敬一 谢舟 李婷 罗枭 马小平中国石油塔里木油田公司摘要:塔里木盆地奥陶系油气勘探前期以塔北隆起、塔中凸起、塔中凸起斜坡区碳酸盐岩岩溶储层类型为主,并且发现了多个碳酸盐岩油气藏。
但是塔北隆起与塔中凸起之间的北部坳陷却未获得油气发现,对储层发育机制及油气成藏模式认识不足制约了其油气勘探进程。
为此,通过对该盆地北部坳陷走滑断裂的解释攻关,在识别走滑断裂的基础上,开展了断裂分层、分段研究,明确了走滑断裂对储层和油气藏形成的控制作用。
研究结果表明:①北部坳陷走滑断裂活动较弱,双重滤波基础上提取振幅变化率属性,可以大幅度提高走滑断裂识别精度,并在北部坳陷识别出走滑断裂34条;②走滑断裂具有纵向分层的特征,形成寒武纪—奥陶纪以高角度线性走滑为主、志留纪—二叠纪以线性构造半花状构造为主、三叠纪—古近纪以雁列构造为主的3套断裂组合;③走滑断裂在平面上具有3分段特征,即形成于构造高点呈正花状的压扭段、明显地堑特征呈负花状的张扭段和断裂活动强度最弱的平移段;④走滑断裂控储控藏特征明显,平面上油气藏主要沿断裂带呈条带状分布,纵向上油气沿断裂带呈多层段分布,形成了9种油气藏模式。
结论认为,基于叠后地震资料解释性处理的走滑断裂综合刻画技术实现了对弱走滑断裂的精细解释;上述9种油气藏模式有效地指导了该盆地北部坳陷的油气勘探部署,实现了该区油气的高效开发。
关键词:塔里木盆地北部坳陷;奥陶系;碳酸盐岩;走滑断裂;储集层;油气藏形成;控制作用DOI: 10.3787/j.issn.1000-0976.2021.03.002Control effect of strike-slip faults on carbonate reservoirs and hydrocarbon accumulation:A case study of the northern depression in the Tarim BasinWANG Rujun, WANG Xuan, DENG Xingliang, ZHANG Yintao, YUAN Jingyi,XIE Zhou, LI Ting, LUO Xiao, MA Xiaoping(PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China)Natural Gas Industry, Vol.41, No.3, p.10-20, 3/25/2021. (ISSN 1000-0976; In Chinese)Abstract:In the early exploration stage of Ordovician oil and gas in the Tarim Basin, carbonate karst reservoirs in Tabei uplift, Tazhong uplift and the slope of Tazhong uplift are dominant and a great number of carbonate oil and gas reservoirs are discovered. In the northern depression between the Tabei uplift and the Tazhong uplift, however, no oil and gas has been discovered and oil and gas exploration prog-ress is restricted because its reservoir development mechanisms and hydrocarbon accumulation patterns are not understood sufficiently. After identifying the strike-slip faults by researching the interpretation on the strike-slip faults in the northern depression of the Tarim Basin, this paper studies the faults by layers and segments and then clarifies the control effect of strike-slip faults on reservoirs and hy-drocarbon accumulation. And the following research results were obtained. First, the strike-slip fault activity in the northern depression is weaker. The accuracy of strike-slip fault identification can be greatly improved by extracting the attribute of amplitude change rate based on double filtering, and 34 strike-slip faults are identified in the northern depression. Second, strike-slip faults have the characteristics of vertical stratification, and there are three sets of fault combinations that are dominated by high-angle linear strike-slip in Cambrian to Ordovician, linear semi-flower-like structure in Silurian to Permian, and en-echelon structure in Triassic to Paleogene. Third, strike-slip faults present the characteristics of three segments on plane, i.e., the compression and torsion segment of positive flower shape at the structural high, the tension and torsion segment of negative flower shape with obvious graben characteristics, and the translation segment with the weakest fault activity intensity. Fourth, the reservoirs and hydrocarbon accumulation are controlled by strike-slip faults obvious-ly. The oil and gas reservoirs are mainly distributed along the fault belt on plane and oil and gas are distributed in multiple sections along faults in the vertical direction. Thus, there are 9 hydrocarbon accumulation patterns. In conclusion, the fine interpretation of weak strike-slip faults can be realized by virtue of the comprehensive description technology of strike-slip faults based on the interpretive processing of post-stack seismic data. What’s more, these 9 reservoir accumulation patterns effectively guide the exploration deployment in the northern depression of the Tarim Basin and realize the efficient oil and gas development in this area.Keywords: Northern depression of the Tarim Basin, Ordovician; Carbonate rock; Strike-slip fault, Reservoir; Hydrocarbon accumulation; Control effect基金项目:中国石油天然气股份有限公司重大科技专项“缝洞型碳酸盐岩油气藏效益开发关键技术研究与应用”(编号:2018E-1806)。
古洞穴型碳酸盐岩储层特征研究--以塔河油田奥陶系古洞穴为例肖玉茹;何峰煜;孙义梅【期刊名称】《石油与天然气地质》【年(卷),期】2003(024)001【摘要】古洞穴型碳酸盐岩储层都具有显著的非均质性和预测难度大的特点.通过对比巴楚五道班野外露头剖面上的洞穴,结合岩溶理论建立了古洞穴型储层的地质模型.以塔里木盆地塔河油田奥陶系古洞穴型储层为例,系统分析和归纳了该类储层在钻井、录井、测井、试井、地震等资料上的响应特征和识别标志.在垂向上,可将洞穴划分为洞穴顶部相、洞穴充填相与下部垮塌相,其中洞穴顶部相和下部垮塌相对油气储集十分有利.而多层洞穴的发育则主要受控于构造抬升和海平面升降.影响古洞穴碳酸盐岩储层的平面非均质性的主要因素有古构造、古断裂、古水文系统、古岩溶地貌等,其中与古岩溶地貌关系最为密切.研究结果表明,储集性能较好的古洞穴型碳酸盐岩储层为未充填洞穴储层和大型洞穴充填孔隙型砂岩储层.【总页数】7页(P75-80,86)【作者】肖玉茹;何峰煜;孙义梅【作者单位】中国地质大学,北京,100083;中国石化新星石油公司西北石油局,新疆乌鲁木齐,830011;中国石化新星石油公司西北石油局,新疆乌鲁木齐,830011;中国地质大学,北京,100083【正文语种】中文【中图分类】TE112.221【相关文献】1.轮古油田奥陶系潜山洞穴型储层发育特征及油气分布控制因素 [J], 韩杰;洪涛;朱永峰;刘俊锋;裴广平;袁源;吴萧2.论古岩溶洞穴型储层三维地质建模——以塔河油田四区奥陶系储层为例 [J], 马晓强;侯加限;胡向阳;刘钰铭;邹婧芸;赵彬3.轮古西奥陶系潜山洞穴型岩溶储层发育特征与充填规律 [J], 李世银;罗春树;邓兴梁;李保华;常少英;王轩;裴广平4.新疆塔里木盆地塔河油田奥陶系古洞穴型碳酸盐岩储层特征及其受控因素 [J], 肖玉茹;王敦则;沈杉平5.塔河油田奥陶系古洞穴垮塌体地震反射结构与识别 [J], 康志宏;鲁新便;唐湘蓉;冉毅凤;童雪飞因版权原因,仅展示原文概要,查看原文内容请购买。
爲比勺夭然毛此仏第42卷第3期OIL&GAS GEOLOGY2021年6月文章编号:0253-9985(2021)03-0717-11doi:10.11743/ogg20210316深层海相碳酸盐岩储层地震预测关键技术与效果以四川盆地震旦系-寒武系与塔里木盆地奥陶系油气藏为例林煜1,李相文1,陈康2,张银涛3,减殿光1,郁智1(1.中国石油集团东方地球物理勘探有限责任公司研究院,河北涿州072750;2.中国石油集团西南油气田分公司勘探开发研究院,四川成都610051;3.中国石油集团塔里木油田分公司勘探开发研究院,新疆巴音郭楞蒙古自治州841000)摘要:以储层定量化预测为核心的碳酸盐岩油气藏地震表征技术是实现该领域增储上产的重要手段。
中国的油气勘探开发在早期阶段主要集中于中-浅层陆相碎屑岩领域,近二十年来,随着塔河、普光和安岳等西部大气田的发现,深层海相碳酸盐岩的开发前景才逐步明朗。
与国外相比,中国的深层海相碳酸盐岩年代更加古老、地表条件更加复杂、非均质性更强,这些都为储层定量预测带来了巨大的挑战。
以四川盆地震旦系-寒武系礁滩型储层与塔里木盆地奥陶系缝洞型储层为例,在对2类储层地质特点与地震研究难点充分剖析的基础上,系统阐述了针对性的地震预测思路与关键配套技术。
目前,随着“两宽一高”地震采集、井控高保真宽频处理以及相控地震波阻抗反演等核心技术的不断完善,中国深层海相碳酸盐岩油气藏的储层预测已经由定性逐渐转变为半定量,由简单描述转变为储渗单元精细刻画。
此次研究也将为国内外其他碳酸盐岩油气藏精细开发提供借鉴意义。
关键词:“两宽一高”地震采集;高保真宽频处理;储层预测;礁滩型储层;缝洞型储层;深层碳酸盐岩;四川盆地;塔里木盆地中图分类号:TE122.2文献标识码:AKey seismic techniques for predicting deep marine carbonate reservoirs and the effect analysis:A case study on the Sinian-Cambrian reservoirs inthe Sichuan Basin and the Ordovician reservoirs in the Tarim BasinLin Yu1,Li Xiangwen1,Chen Kang2, Zhang Yintao3,Zang Dianguang1,Yu Zhi1(1.Bureau of Geophysics Prospecting Inc.,PetroChina,Zhuozhou,Hebei072750,China;2.Southwest Oil and Gas Field Company,PetroChina,Chengdu,Sichuan610051,China;3.Exploration and Development ReaseachInstitute under Tarim Oilfield Company,PetroChina,Bayingol Mongolian Autonomous Prefecture,Xinjiang841000,Ch加a)Abstract:The seismic characterization of carbonate reservoirs with the quantitative prediction at its core is key to reserve growth and production enhancement.Petroleum exploration and development in China have formerly been focused on middle-t o-s hallow terrestrial clastic rocks.In the past two decades,deep marine carbonate rocks,however,start to shine with the discovery of Tahe,Puguang,Anyue and other large-scale gas fields in the west of the country.In comparison to other countries,the deep marine carbonate reservoirs in China are generally characterized by more complex surface conditions, longer history,and higher heterogeneity,all of which have posed significant challenges to quantitative reservoir prediction.Based on the practices in the Ordovician fractured-vuggy reservoirs in the Tarim Basin and Sinian-Cambrian reef-shoal reservoirs in the Sichuan Basin,we systematically expound on seismic prediction approaches and key supporting technologies targeting at dealing with the difficulties specific to the two types of deep carbonate reservoirs. With continuous progress in technologies such as seismic acquisition with u wide azimuth and broadband as well as high density”(2W1H),high fidelity and broadband data processing for well control,pre-stack impedance inversion constrained by sedimentary facies and other key technologies, the reservoir prediction of deep marine carbonate rocks in China has changed from qualitative description into semi-quantitative prediction,and from simple description into fine depiction of reservoir flow units.The study is also of guiding value to the fine development of carbonate reservoirs in both收稿日期:2019-ll-04;修订日期:2021-04-16o第一作者简介:林煜(1985—),男,高级工程师,油气藏精细描述与油藏地球物理。