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| 1 | 塔河油田奥陶系碳酸盐岩岩溶储集体类型及划分方法研究显示文摘塔河油田奥陶系油藏储集体类型的多样性和复杂性,给常规测井定量解释带来了很大困难。此类油藏储集体类型的划分和识别对油田开发极为重要。根据6口关键井的电成像测井(FMI)和岩心样品特征,将塔河碳酸盐岩储集体划分为未充填洞穴型、垮塌充填洞穴型、机械充填洞穴型和裂缝型4类。依据其中5口井的常规测井响应和4类储集体划分结果,选用GR、RD、RS、K3(深浅侧向电阻率倒数差的绝对值)、AC、DEN和CNL共7种测井信息作为神经网络的输入学习样本,经学习训练建立了储层划分的神经网络模型。通过检验井对比,说明基于神经网络模型,通过常规测井的多参数约束,可以判断岩溶型储集体类型。经本次研究,初步形成了储集体半定量评价标准。 | 康志宏 戎意民 魏历灵 李雪 陈夷 陈琳 | 2014 | 现代地质2014，28，5： | 16 |
| 2 | A new method of formation evaluation for fractured and caved carbonate reservoirs:A case study from the Lundong area,Tarim Basin,China显示文摘The carbonate reservoirs in the Tarim Basin are characterized by low matrix-porosity,heterogeneity and anisotropy,which make it difficult to predict and evaluate these reservoirs.The reservoir formations in Lundong area experienced a series of diagenesis and tectonic evolution stages.And secondary storage spaces such as fractures and dissolution caves were developed while nearly all the primary pores have disappeared.Based on a summary of different types of storage spaces and their responses in conventional logs,FMI and full waveform sonic logs which are sensitive to different reservoirs,the comprehensive probability index (CPI) method is applied to evaluating the reservoirs and a standard of reservoir classification is established.By comparing the evaluation results with actual welllogging results,the method has proven to be practical for formation evaluation of carbonate reservoirs,especially for the fractured carbonate reservoirs.In reservoir fluid identification,the multivariate stepwise discriminant analysis (MSDA) method is introduced.Combining the CPI method and MSDA method,comprehensive formation evaluation has been performed for fractured and caved carbonate reservoirs in the Tarim Basin.Additionally,on the basis of secondary pore inversion results,another new method of formation evaluation is also proposed in the discussion part of this paper.Through detailed application result analysis,the method shows a promising capability for formation evaluation of complex carbonate reservoirs dominated by various secondary pores such as holes,caves,and cracks. | Yang Haijun Sam Zandong Sun Cai Lulu Xiao Youjun WangHaiyang Luo Chunshu Hu Hongru | 2011 | Petroleum Science2011，8，4： | 7 |
| 3 | 轮古地区古岩溶成像测井响应特征及其对岩溶发育的指示作用显示文摘塔里木盆地轮古地区奥陶系碳酸盐岩储层受多期构造运动及古岩溶作用的叠加改造,该地区古岩溶作用形成的溶洞、裂缝等次生孔隙是主要的油气储集空间。因此古岩溶发育研究是碳酸盐储层评价极为重要的研究内容。文章在对轮古地区奥陶系碳酸盐岩储层大量成像测井资料处理基础上,主要通过对溶蚀裂缝、溶洞的成像测井响应特征进行分析,总结古岩溶标志的成像测井响应规律。高导缝在成像测井图像上表现为褐黑色正弦曲线,溶蚀缝表现为裂缝图像边缘不平直,未充填溶洞在图像上表现为暗色的团块分布,对于全充填洞,可在成像测井图中见到层理等沉积现象。溶蚀程度的差异可根据成像测井资料上解释的裂缝及溶洞中角砾的多寡来度量。轮古西井区,其大溶洞中角砾已溶蚀掉,部分溶洞充填泥砂,表明溶蚀程度很高;轮古中部各井溶洞中的角砾还比较大,单产状裂缝溶洞的规模比轮古西井区小,溶洞溶蚀程度较弱;轮古东井区未见单产状小溶洞,仅见大溶洞的雏形或只有交叉缝和溶蚀裂缝。对区域大量成像测井识别的洞穴数据统计结果表明轮古地区奥陶系洞穴型岩溶储层的分布主要受表层岩溶作用控制。 | 傅海成 邹长春 肖承文 祁兴中 王儒安 赵丹颖 孙健 | 2015 | 中国岩溶2015，34，2： | 7 |
| 4 | 塔河奥陶系油藏岩溶储层类型、洞穴结构和发育模式:以塔河油田7区T615缝洞单元为例显示文摘塔河奥陶系碳酸盐岩油藏储集体以岩溶缝洞为主,随着油田开发深入和地球物理技术长足进展,岩溶暗河地下形态渐为明晰。但由于岩溶缝洞储集体具有空间结构复杂、岩溶产物和储集体类型多样等特点,以至于岩溶储集体类型、结构和发育模式分歧较大。以T615缝洞单元为实例,以高分辨采集的地震资料为基础,结合单元内岩心、录井、测井、FMI成像测井和单井动态等资料,将井区内储集体划分为机械充填型(砂泥岩充填和细砂岩充填)、垮塌角砾充填型、溶洞(未充填)型和溶蚀裂缝4种类型。结合高分辨采集的三维地震属性刻画资料,对典型岩溶系统主要岩溶产物(厅堂洞、干流洞、末梢洞、落水洞和驻水洞)的分布特征及识别标志进行研究,将岩溶划分为4个期次。经过构造和充填改造,在4层洞穴中,洞穴结构、岩溶产物和储集体类型具有较大差异。结合水文地质和岩溶理论,建立典型岩溶系统的连井岩溶缝洞地质剖面图和连井缝洞发育模式图,揭示井间缝洞组合关系,对岩溶储层描述和表征具有指导意义。 | 徐嘉宏 康志宏 蓝茜茜 | 2020 | 现代地质2020，34，6： | 5 |
| 5 | Integrated petrophysical log characterization for tight carbonate reservoir effectiveness: A case study from the Longgang area, Sichuan Basin, China显示文摘Ultra-low porosity and permeability, inhomogeneous fracture distribution, and complex storage space together make the effectiveness evaluation of tight carbonate reservoirs difficult. Aiming at the carbonate reservoirs of the Da'anzhai Formation in the Longgang area of the Sichuan Basin, based on petrophysical experiments and logging response characteristics, we investigated the storage properties of matrix pores and the characteristics of fracture development to establish a method for the characterization of effectiveness of tight reservoirs. Mercury injection and nuclear magnetic resonance (NMR) experiments show that the conventional relationship between porosity and permeability cannot fully reflect the fluid flow behavior in tight matrix pores. Under reservoir conditions, the tight reservoirs still possess certain storage space and permeability, which are controlled by the characteristic structures of the matrix porosity. The degree of fracture development is crucial to the productivity and quality of tight reservoirs. By combining the fracture development similarity of the same type of reservoirs and the fracture development heterogeneity in the same block, a three-level classification method of fracture development was established on the basis of fracture porosity distribution and its cumulative features. According to the actual production data, based on the effectiveness analysis of the matrix pores and fast inversion of fracture parameters from dual laterolog data, we divided the effective reservoirs into three classes Class I with developed fractures and pores, and high-intermediate productivity; Class II with moderately developed fractures and pores or of fractured type, and intermediate-low productivity; Class III with poorly developed fractures and matrix pores, and extremely low productivity. Accordingly log classification standards were set up. Production data shows that the classification of effective reservoirs is highly consistent with the reservoir productivity level, providing a new approach for the effectiveness evaluation of tight reservoirs. | Deng Shaogui Wang Yang Hu Yunyun Ge Xinmin He Xuquan | 2013 | Petroleum Science2013，10，3： | 3 |
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