近年来随着勘探不断深入，勘探目标向中深层和致密气藏拓展，需要对鄂尔多斯盆地的资源现状、类型和数量进行全新的认知。分析了盆地天然气成藏地质条件，建立了下古生界碳酸盐岩气和上古生界致密砂岩气成藏模式，明确了天然气富集规律。同时，为了满足精细勘探的需求，在 “层区带” 划分的基础上，优选和细化评价参数，采用小面元容积法、EUR类比法等6种方法，评价盆地天然气地质资源量为15.68×10¹²m³，剩余地质资源量为8.79×10¹²m³。其中，常规气剩余地质资源量为1.67×10¹²m³，非常规气剩余地质资源量为7.12×10¹²m³。预测了剩余资源层系及地区分布规律，分层次优选了有利勘探目标区带。

鄂尔多斯盆地为典型的克拉通内盆地，油、气、煤、盐、铀等矿产资源丰富。研究构造运动的期次、序列与性质将为揭示克拉通盆地的成因与演化过程奠定基础，同时也将为探讨多种能源、矿产资源赋存的内在机制提供依据。基于近年来的高精度区域反射地震剖面和深井资料，结合周缘地质露头分析，通过厘定鄂尔多斯盆地的关键构造变革时期，建立了盆地演化的时-空框架。研究表明，鄂尔多斯盆地由下至上发育10个区域不整合面，分别为长城系、蓟县系、震旦系、寒武系、奥陶系、石炭系、三叠系、侏罗系、白垩系和第四系底界不整合面；盆地发育中元古界、寒武系-奥陶系、上石炭统-三叠系、侏罗系、下白垩统和新生界6个构造-地层层序。鄂尔多斯盆地的形成与演化受控于周缘板块构造作用，经历了中元古代早-中期大陆裂解、寒武纪-中奥陶世被动大陆边缘、晚奥陶世主动大陆边缘形成与碰撞造山、晚石炭世-二叠纪末期周缘裂解、中生代早期大型陆内坳陷、中生代中-晚期陆内前陆盆地和新生代周缘断陷等演化过程。鄂尔多斯盆地岩石圈深部的构造作用相对活跃，盆地内部发育中奥陶世、中-晚三叠世、早白垩世与晚中新世4期中酸性、中基性火山活动，其中，早白垩世晚期的火山活动强烈。结合周缘板块构造事件、盆内岩浆活动和盆地沉降-隆升过程分析，鄂尔多斯盆地经历了新元古代、晚奥陶世、中-晚三叠世、晚侏罗世-早白垩世、新生代5个关键构造变革期，这些构造变革期控制了盆地的构造演化和地质结构，对鄂尔多斯盆地的油气分布产生了深远影响。

Ordos Basin is a typical intracratonic basin, rich in mineral resources such as oil and gas, coal, salt, and uranium. Studying the periods, sequences and attributes of tectonic movement of the basin will not only lay the foundation for revealing the origin and evolution process of the craton basin, but also provide a basis for exploring the internal occurrence mechanism of the multiple energy and mineral resources. Based on high-resolution reflection seismic profile and deep-well data in recent years, in combination with the analysis of peripheral geological outcrops, this paper establishes a spatio-temporal framework of basin evolution by determining the key tectonic evolution periods of Ordos Basin. Studies have shown that there are 10 regional unconformities developed from bottom to top in the Ordos Basin, namely the basal unconformities in the Changchengnian, the Jixianian, the Sinian, the Cambrian, the Ordovician, the Carboniferous, the Triassic, the Jurassic, the Cretaceous and the Quaternary. Six tectono-stratigraphic sequences developed in the Mesoproterozoic, the Cambrian to Ordovician, the Upper Carboniferous to Triassic, the Jurassic, the Lower Cretaceous and the Cenozoic in the basin. The formation and evolution of Ordos Basin was controlled by the tectonization of the peripheral plates. It experienced the continental breakup in the early and middle period of the Mesoproterozoic, the development of passive continental margin during the Cambrian to the Middle Ordovician, the formation of active continental margin and collision orogeny in the Late Ordovician, the periphery breakup during the Late Carboniferous to the end of the Permian, the development of large-scale intracontinental depressions during the Early Mesozoic and intracontinental foreland basins during the Middle to Late Mesozoic, and peripheral fault depressions during the Cenozoic and other evolution processes. Tectonism in the deep lithosphere of Ordos Basin is relatively active. The basin is subjected to four periods of intermediate-acid or mafic-intermediate volcanic activities in the Middle Ordovician, the Middle and Late Triassic, the Early Cretaceous, and the Late Miocene, especially much extensive in the late period of the Early Cretaceous. Further, through analyzing the tectonic events of peripheral plates, intrabasin magmatic activity and basin subsidence-uplifting process, it is believed that Ordos Basin has experienced five key tectonic modification periods of the Neoproterozoic, the Late Ordovician, the Middle to Late Triassic, the Late Jurassic to Early Cretaceous, and the Cenozoic. These tectonic modification periods control the tectonic evolution and geological architecture of the basin, and have a profound impact on the distribution of oil and gas in Ordos Basin.

鄂尔多斯盆地蕴藏多种类型天然气资源。随着勘探领域由常规到非常规、浅层到深层深入，鄂尔多斯盆地逐渐展现出一批新领域、新类型天然气藏。基于近年来的勘探成果，梳理出深部煤层气、太原组灰岩气和铝土岩气、奥陶系盐下气、海相页岩气和深层元古界气等新类型气藏，并从沉积构造背景、源-储配置、封盖保存条件等方面进行了深入分析。通过分析其生-储-盖配置关系，总结不同类型天然气的成藏特征与差异，认为这些气藏整体上具有近源成藏、自生自储的成藏模式。在落实气藏富集特征的基础上，评价了各领域天然气藏的有利勘探区，明确了其资源潜力和储量规模。深部煤层气的有利含气区面积为6.9×10⁴km²，资源量预计为13.80×10¹²m³，预计可落实万亿立方米储量规模；太原组灰岩气藏的有利含气区面积为1.5×10⁴km²，初步估算资源量为1.6× 10¹²m³，储量规模达5 000×10⁸m³；太原组铝土岩气藏的勘探面积为7 000 km²，天然气资源量超过5 000×10⁸m³；奥陶系盐下马家沟组四段天然气的有利勘探面积为2.5×10⁴km²，预计储量规模超过7 000×10⁸m³；乌拉力克组海相页岩的有利含气区面积为9 000 km²，天然气资源量预计为1×10¹²m³，并落实了含气富集区2个；深层元古界优选出2个天然气有利区，勘探面积为5.71×10⁴km²。鄂尔多斯盆地天然气资源仍具有较大的勘探潜力。

Ordos Basin is rich in various types of natural gas resources. With the deep exploration from conventional to unconventional hydrocarbons and from shallow to deep strata, a set of natural gas reservoirs of new fields and new types are discovered in Ordos Basin. Based on exploration achievements in recent years, the paper summarizes the new types of gas reservoirs, including deep coalbed methane, Taiyuan Formation limestone gas and bauxite gas, Ordovician presalt gas, marine shale gas, and deep Proterozoic gas, and further performs an in-depth analysis from the perspectives of sedimentary-tectonic background, source-reservoir configuration, and sealing-preservation condition. By analyzing the deployment relationship of source-reservoir-cap assemblage and summarizing the differences of accumulation characteristics and various natural gas, it is believed that these gas reservoirs generally have the accumulation model of near-source, self-generation and self-reservoiring. Based on determining the enrichment characteristics of gas reservoirs, the paper evaluates the favorable exploration areas for natural gas reservoirs in various fields and clarifies their resource potentials and reserve scales. The favorable gas-bearing area of deep coal bed methane is 6.9×10⁴km²; the resources are estimated to be 13.80×10¹²m³, expected to achieve a reserve of trillions of cubic meters. The favorable gas bearing area of Taiyuan Formation limestone gas reservoir is 1.5×10⁴km², with preliminary estimated resources of 1.6×10¹²m³, and a reserve scale of 5 000×10⁸m³. The exploration area of Taiyuan Formation bauxite is 7 000 km², with natural gas resources exceeding 5 000×10⁸m³. The favorable exploration area for presalt natural gas in the Member 4 of Ordovician Majiagou Formation is 2.5×10⁴km², with an estimated reserve exceeding 7 000×10⁸m³. The favorable gas-bearing area of Wulalik Formation marine shale is 9 000 km²; the natural gas resources are estimated to be 1×10¹²m³, and two gas abundance zones have been identified. Two favorable areas of natural gas in the deep Proterozoic are optimized, with an exploration area of 5.71×10⁴km². The natural gas resources in Ordos Basin still have large exploration potential.

鄂尔多斯盆地本溪组煤系烃源岩在盆地中东部广泛发育，为盆地古生界天然气藏提供了气源保障。近年来在鄂尔多斯盆地本溪组不断取得致密气、页岩气和煤岩气勘探突破，揭示本溪组天然气藏类型多样、资源潜力较大。为深化本溪组多种类型天然气藏的成藏条件和运聚规律等认识，系统分析了本溪组沉积环境、气源岩地球化学特征、天然气储集条件，探讨了本溪组多类型天然气富集成藏机理，并指明了天然气勘探方向。研究表明：①本溪组8号煤层和招贤页岩在鄂尔多斯盆地中—东部广泛发育、分布稳定、热演化程度适中，是盆地古生界的有利气源岩。②本溪组天然气储层类型多样，其中，致密砂岩储层孔隙度平均为5.48%，以Ⅱ类、Ⅲ类储层为主，储集性能较好；煤岩储层孔缝发育，储集空间以割理缝、植物组织孔（胞腔孔）、气泡孔为主，孔隙度在0.5%~16.0%，游离气含量高；泥页岩储层较为致密，储集空间以无机孔隙为主，孔隙度平均为1.43%。③沉积环境、气源特征、储集条件、岩性组合特征等是本溪组发育多类型天然气成藏条件的主要影响因素。研究认识明确了鄂尔多斯盆地本溪组天然气勘探方向，并优选评价了天然气有利勘探区，对下一步勘探部署具有重要指导与借鉴意义。

Coal measure source rocks of Benxi Formation in Ordos Basin are widely developed in the central and eastern part of the basin, providing gas source for Paleozoic natural gas reservoirs in the basin. In recent years, breakthroughs have been made in the exploration of tight gas, shale gas and coalbed methane in the Benxi Formation of Ordos Basin. This reveals that there are various types of gas reservoirs in Benxi Formation, showing great resource potential. To deepen the understandings of the accumulation conditions and migration and accumulation laws of various types of natural gas reservoirs in Benxi Formation, the paper systematically analyzes the sedimentary environment, geochemical characteristics of gas source rocks and natural gas reservoir conditions of Benxi Formation, explores the enrichment and accumulation mechanism of multiple types of natural gas in Benxi Formation, and points out the direction of natural gas exploration. Research shows that:(1) No.8 coal and Zhaoxian shale are widely developed in the central and eastern Ordos Basin, characterized with stable distribution and moderate thermal evolution, which are favorable gas source rocks in the Paleozoic of the basin. (2) Various types of reservoirs are developed in Benxi Formation, dominated by Type II and Type III tight sandstone reservoirs, with the average porosity of 5.48% and good reservoir property. The pores and fractures of coal reservoirs are developed, and the reservoir space is dominated by cleats, plant tissue pores (cell pores), and bubble pores. The porosity is 0.5%-16.0%, and the content of free gas is high. The shale reservoir is relatively dense, and the reservoir space is dominated by inorganic pores, with an average porosity of 1.43%. (3) Sedimentary environment, gas source characteristics, reservoiring conditions and lithologic combination characteristics are the main influencing factors for the development of multiple types of natural gas in Benxi Formation. Based on the above understandings, the paper determines the exploration direction of natural gas in Benxi Formation of Ordos Basin, and optimizes and evaluates the favorable exploration areas of Benxi Formation, which is of important guidance and reference significance for the next hydrocarbon exploration and its deployment.

鄂尔多斯盆地二叠系太原组发育一套致密灰岩储层，近年来风险勘探取得重大突破，成为天然气勘探关注的重点领域。通过野外露头、岩心观察、薄片鉴定、扫描电镜和稳定碳、氧同位素等分析测试，开展岩石学、储集空间、储层物性及微观特征研究，系统分析了致密灰岩储层发育特征及有利储层控制因素。研究认为：太原组可作为良好储集层的岩石类型为生屑粉晶灰岩、生屑泥晶灰岩、藻黏结灰岩，储集空间主要为溶孔、残余生物体腔孔、晶间孔及微裂缝，储层平均孔隙度为2.1%，平均渗透率为0.22×10^-3μm²，属于低孔、低渗储层。太原组灰岩有利储层形成受多种因素控制，其中生屑滩、生物丘有利沉积微相是储层形成的物质基础，决定了储集空间类型及平面大面积分布；高频旋回控制下的准同生岩溶作用有利于溶蚀孔的形成，能有效改善储层的储集性能，为厚层灰岩储层的发育创造了条件；裂缝对改善致密灰岩储层渗流能力具有至关重要的作用。研究成果为鄂尔多斯盆地太原组灰岩的下一步勘探指明了方向，同时，也对华北地台生物碎屑灰岩储层研究及勘探目标优选具有重要借鉴意义。

A set of tight limestone reservoirs has been developed in the Permian Taiyuan Formation of the Ordos Basin. In recent years， the risk exploration has made a substantial breakthrough and has become a key field of natural gas exploration. Through field outcrop， core observation， thin section identification， scanning electron microscope and stable carbon and oxygen isotope analysis and testing， petrology， reservoir space， reservoir physical properties and microscopic characteristics were studied， and the development characteristics of tight limestone reservoirs and controlling factors of favorable reservoirs were systematically analyzed. The research shows that the rock types that can be used as good reservoirs are bioclastic micrite limestone， bioclastic micrite limestone， algal boundstone， and the reservoir space is mainly dissolved pores， residual organism cavity pores， inter-crystalline pores and micro fractures. The average porosity of the reservoir is 2.1%， and the average permeability is 0.22×10^-3 μm²， belonging to low porosity and low permeability reservoirs. The formation of favorable reservoirs of Taiyuan Formation limestone in the study area is controlled by many factors， among which favorable sedimentary microfacies of bioclastic beach and biodome are the material basis for the formation of reservoirs， which determine the type of reservoir space and large plane distribution； Quasisyngenetic karstification under the control of high frequency cycle is favorable for the formation of dissolution holes， effectively improving the reservoir performance， and creating conditions for the development of thick limestone reservoirs； Fractures play an important role in improving the permeability of tight limestone reservoirs. The research results point out the direction for the next step of limestone exploration of Taiyuan Formation in Ordos Basin， and also have important reference significance for the research and exploration of bioclastic limestone reservoirs in North China platform.

鄂尔多斯盆地延安地区二叠系山西组页岩气勘探潜力较大。通过分析钻井、录井以及测井资料，结合泥页岩样品的分析化验资料，深入分析了延安地区二叠系山西组页岩气源储特征及成藏过程，并探讨页岩气聚集机理。研究结果表明：①鄂尔多斯盆地延安地区二叠系山西组大面积分布的泥页岩有机碳（TOC）含量较高，平均质量分数为 2.12%，干酪根类型主要为Ⅲ型，R_o为2.0%~3.7%，处于高成熟—过成熟阶段，为优质烃源岩。②研究区山西组泥页岩矿物组成整体上具有富黏土特征，黏土矿物平均质量分数为 56.7%，有利于吸附气的赋存；主要发育无机矿物孔、有机孔和微裂缝 3 种储集空间类型；岩石含气性受不同岩性组合的影响而差异较大，山 2 段相较于山 1段具有较高的含气量（平均质量体积为1.38 m³/t）。按照源储配置关系，可划分为厚层泥页岩夹薄砂层、泥页岩与粉砂岩和细砂岩互层、泥页岩与煤层混层 3 种类型，不同的源储配置具有不同的含气特征。③研究区页岩气主要以吸附态、游离态赋存，在成藏过程处于动态平衡的状态，随着地层条件的变化而不断转化。其聚集过程可分为 3 个阶段：早侏罗世，有机质开始生成气态烃，页岩气开始吸附聚集；中—晚侏罗世，气态烃大量生成膨胀造隙，气态烃排出，裂缝关闭，循环运移聚集；早白垩世，有机质达到高—过成熟阶段，进入最后一个生排烃时期，直至地层抬升，生烃终止。泥页岩良好的封盖作用为页岩气藏的形成提供了坚实的保障。

Permian Shanxi Formation has great exploration potential for shale gas in Yan’an area of Ordos Basin.By analyzing drilling, mud-logging and wire-logging data, combined with the analysis and laboratory data of shale samples, the source-reservoir characteristics and accumulation process of shale gas of Permian Shanxi Formation in Yan’an area were analyzed, and the accumulation mechanism of shale gas was discussed. The results show that:（1）The organic carbon（TOC）content of shale of Permian Shanxi Formation in Yan’an area of Ordos Basin is relatively high, with an average mass fraction of 2.12%. The main type of kerogen is type Ⅲ, with Ro ranging from 2.0% to 3.7%. It is in the high to over mature stage and high-quality source rocks.（2）The mineral composition of the shale of Shanxi Formation in the study area seems to be rich in clay, with an average mass fraction of clay minerals of 56.7%, which is conducive to the occurrence of adsorbed gas. There are mainly three types of reservoir spaces:inorganic mineral pores, organic pores, and micro-fractures. The gas content of rocks varies greatly due to the influence of different lithology combinations. The Shan 2 member has a higher gas content than Shan 1 member（with an average mass volume of 1.38 m³/t）. According to different lithology combinations, the source-reservoir configuration of shale gas of Shanxi Formation can be divided into three types:thick shale interbedded with thin sand layer, shale interbedded with siltstone and fine sandstone, and shale mixed with coal seam. Different source-reservoir configurations have different gas-bearing characteristics.（3）The shale gas is mainly in adsorbed state and free state in the study area, and is in a dynamic equilibrium state during the accumulation process, continuously transforming with the change of formation conditions. The accumulation process can be divided into three stages:In Early Jurassic, organic matter began to generate gaseous hydrocarbons, and shale gas began to adsorb and accumulate；During Middle-Late Jurassic, a large number of gaseous hydrocarbons were generated and expanded, gaseous hydrocarbons were discharged, fractures closed, and cyclic migration and accumulation occurred；In Early Cretaceous, organic matter reached a high-over mature stage, entering the final stage of hydrocarbon generation and expulsion, until the formation uplifted and hydrocarbon generation ended. The good sealing effect of shale provides a solid guarantee for the formation of shale gas reservoirs.

忠平1井的勘探突破揭示了中国北方海相页岩气在富集条件方面与南方海相页岩气有较大差异。通过最新钻井资料及野外露头剖面对鄂尔多斯盆地西缘奥陶系乌拉力克组低TOC含量“新型”海相页岩气富集地质条件及勘探潜力，包括泥页岩的矿物组分、孔隙特征、有机地球化学特征、含气性等参数进行了研究，结果表明：①乌拉力克组泥页岩矿物组分以长英质矿物为主，其次为碳酸盐矿物和黏土矿物，黏土矿物以伊利石和伊/蒙间层为主，其次为绿泥石、高岭石。②乌拉力克组孔隙度低（基本小于2.0%），以粒内孔、微裂缝为主要储集空间，有机质孔不发育；孔隙以中孔发育为主，孔隙发育受控于岩性。③泥页岩有机质类型属于Ⅰ—Ⅱ₁型，其中以Ⅰ型（即腐泥型）干酪根为主；TOC含量主要介于0.1%~3.71%之间，平均为0.49%；有机质镜质体反射率（R_O）分布于0.8%~2.5%之间，大部分处于高—过成熟阶段，不同地区有一定差异性。④乌拉力克组泥页岩现场解吸气含量分布在0.07~0.63 m³/t之间，平均为0.3 m³/t，运用USBM法对损失气量进行恢复，得到的损失气量为0.43~1.83 m³/t，平均为1.09 m³/t，地下总含气量介于0.76~2.46 m³/t之间，平均为1.65 m³/t，反映乌拉力克组泥页岩含气性较好，揭示中国北方海相泥页岩具有较好的页岩气勘探潜力。

The exploration breakthrough of Well Zhongping 1 reveals that the marine shale gas in northern China is quite different from that in southern China in terms of accumulation conditions. Based on the latest drilling data and field outcrops， the geological conditions and exploration potential of “new type” marine shale gas accumulation with low organic matter abundance in Wulalike Formation in the western Ordos Basin are studied， including the rock mineral composition， pore characteristics， organic geochemical characteristics and gas-bearing of shale. The results show that： （1） The shale mineral composition of Wulalike Formation is mainly felsic minerals， followed by carbonate minerals and clay minerals. The clay minerals are mainly illite and interlayer between illite and montmorillonite， followed by chlorite and kaolinite. （2） The porosity of Wulalike Formation is low （less than 2.0%）， and the main reservoir space is intragranular pore and micro fracture， and the organic pore is not developed. The pore is mainly medium pore， and the pore development is controlled by lithology. （3） The organic matter type of shale belongs to type I-II₁， in which type I （sapropel type） kerogen is the main type. The organic matter abundance is mainly 0.1%-3.71%， with an average of 0.49%； the vitrinite reflectance （ R_O） of organic matter is distributed in 0.8%-2.5%， most of them are at high-over mature stage， and there are certain differences in different regions. （4） The content of desorbed gas in the shale of Wulalike formation is 0.07-0.63 m³/t， with an average of 0.3 m³/t. The lost gas is recovered by USBM method. The lost gas is 0.43-1.83 m³/t， with an average of 1.09 m³/t. The total underground gas content is 0.76-2.46 m³/t， with an average of 1.65 m³/t， which reflects that the shale of Wulalike Formation has good adsorption capacity and reveals the marine facies of northern China shale has good shale gas exploration potential.

为了搞好中国陆上主要含油气盆地的油气资源评价工作,对成因法、类比法和统计法三大类主要评价方法进行了大量的研究,取得了一系列的新进展.成因法中引入了含油气系统的研究思路,深化了对油气生成、运移、聚集过程的认识.通过对有效烃源岩下限标准及各类烃源岩产烃率图版的统一建立,提高了生烃量的计算精度.通过对独立的油气运聚单元的解剖,初步解决了运聚系数的定量取值难题.类比法是通过对123个不同类型刻度区的解剖,建立了类比评价的数据库系统,使类比功能有了很大发展,除提高了资源量预测精度外,还能对油气资源在空间分布、品位等方面进行预测.统计法的应用功能也有了新的扩展.

In order to improve the oil and gas resource assessment in the main basins implemented by PetroChina Company Limited,three main assessment methods including genetic method,analogical method and statistical method were anlayzed.A lot of new advancements in the research of assessment methods were acquired.By introducing the petroliferous system theory,the genetic method was greatly improved and suitable for better understanding about the process of oil and gas generation,migration and accumulation.By establishing the uniform low-limit standard for the effective source rocks and the hydrocarbon generation plate of various source rocks,the computation precision of hydrocarbon-generation amount was improved.The difficult problem about determination of the quantitative values of migration-accumulation coefficient was solved by dissection of independent oil migration and accumulation units.The database for analogical method was established,according to the dissection of 123 calibrated units with various types.The database can not only strengthen the functions of analogical method and improve the forecast precision of oil and gas resources but also determine the spatial distribution and the quality of resources.New advancements about the function of statistical method were also expanded.

在系统梳理国内外致密油勘探生产与资源评价方法研究现状、总结中国石油第四次油气资源评价研究成果的基础上，归纳了适合于我国的致密油资源评价方法、工作流程，介绍了最新评价软件的结构、模块和功能，改进了小面元法，形成了GS预测技术，并根据各种评价方法在中国石油第四次油气资源评价中的使用情况，分析了评价软件的应用效果。应用实例展示该技术在鄂尔多斯盆地延长组长7段致密油资源分布预测中效果明显，预测出优质资源主要分布在姬塬的北部和南部、环县东部、长官庙南部、城壕西北部和东部以及塔儿湾等地区，为下一步勘探生产提供参考。

Based on the analysis of the status of global exploration and production,and studies on resources assessment methods of tight oil,and the research results of the fourth round of petroleum resources assessment of PetroChina,this paper summarizes the methods and work flow of tight oil resources assessment suitable for China,and introduces the structure,modules and functions of the latest evaluation software system.The application of various assessment methods in the fourth round of petroleum resources assessment of PetroChina was studied,and the application effect of this assessment software system was analyzed.In this paper,the small bin method was improved,forming GS prediction technique.The application instance shows that this technique has apparent effect on tight oil resources distribution prediction in the 7^th member of the Yanchang Formation in the Ordos Basin.According to the research results,the high-quality tight oil resources are mainly distributed in the following regions:North and south of Jiyuan area,east of Huanxian area,south of Changguanmiao area,northwest and east of Chenghao area,and Taerwan area,etc.The study results can provide useful reference for future tight oil exploration and production in this region.

刻度区解剖是中国石油天然气股份有限公司"主要含油气盆地油气资源评价"中的一项重要成果.共解剖各级、各类刻度区123个,其中主要为凹陷级、运聚单元级、区块级或区带级等.以辽河大民屯凹陷级和运聚单元级刻度区为例,论述了刻度区解剖方法及成果.通过对123个刻度区的解剖,获得了一系列不同级别、不同类型刻度区的石油地质特征参数和资源评价中一些关键的类比参数及资源计算参数(如油气资源丰度、油气可采系数、油气运聚系数、圈闭密度系数、含油气面积系数、烃产率等),建立了上述各重要参数与地质因素密切相关的统计预测模型和取值标准.这一成果为确保资源评价参数选取的客观性、合理性,对提高油气资源预测精度起到了重要的作用.

The establishment of calibrated units is one of the achievements obtained in the third resource assessment implemented by the PetroChina Company Limited.123 calibrated units, including depression type,major hydrocarbon migration and accumulation unit type,play(block)type,were analyzed.A great numbers of characteristic parameters of petroleum geology,analogical parameters and parameters for resource estimation of different types of calibrated units,such as hydrocarbon abundance,hydrocarbon recovery,coefficient of hydrocarbon migration and accumulation,trap density,petroliferous area coefficient,hydrocarbon productivity,were obtained.Some forecasting models and standards for above parameters and coefficients were established.The result of research has the important roles for obtaining the objective and logical parameters of resource assessment and for improving the forecasting precision of resource assessment.