Petroleum Exploration and Development >
Pore-throat structure characteristics and its impact on the porosity and permeability relationship of Carboniferous carbonate reservoirs in eastern edge of Pre-Caspian Basin
Online published: 2020-10-21
Supported by
China Science and Technology Major Project(2017ZX05030-002);China National Petroleum Corporation Scientific Research and Technology Development Project(2019D-4309)
Carboniferous carbonate reservoirs at the eastern edge of the Pre-Caspian Basin have undergone complex sedimentation, diagenesis and tectonism processes, and developed various reservoir space types of pores, cavities and fractures with complicated combination patterns which create intricate pore-throats structure. The complex pore-throat structure leads to the complex porosity-permeability relationship, bringing great challenges for classification and evaluation of reservoirs and efficient development. Based on the comprehensive analysis on cores, thin sections, SEM, mercury intrusion, routine core analysis and various tests, this paper systematically investigated the features and main controlling factors of pore-throats structure and its impact on the porosity-permeability relationship of the four reservoir types which were pore-cavity-fracture, pore-cavity, pore-fracture and pore, and three progresses are made. (1) A set of classification and descriptive approach for pore-throat structure of Carboniferous carbonate reservoirs applied to the eastern edge of the Pre-Caspian Basin was established. Four types of pore-throat structures were developed which were wide multimodal mode, wide bimodal mode, centralized unimodal mode and asymmetry bimodal mode, respectively. The discriminant index of pore-throat structure was proposed, realizing the quantitative characterization of pore-throat structure types. (2) The microscopic heterogeneity of pore reservoir was the strongest and four types of pore-throat structures were all developed. The pore-fracture and pore-cavity-fracture reservoirs took the second place, and the microscopic heterogeneity of pore-cavity reservoir was the weakest. It was revealed that the main controlling factor of pore-throat structure was the combination patterns of reservoir space types formed by sedimentation, diagenesis and tectonism. (3) It was revealed that the development of various pore-throat structure types was the important factor affecting poroperm relationship of reservoirs. The calculation accuracy of permeability of reservoirs can be improved remarkably by subdividing the pore-throat structure types. This study deepens the understanding of pore-throat structure of complicated carbonate reservoirs, and is conducive to classification and evaluation, establishment of precise porosity-permeability relationship and highly efficient development of carbonate reservoirs.
Weiqiang LI , Longxin MU , Lun ZHAO , Jianxin LI , Shuqin WANG , Zifei FAN , Dali SHAO , Changhai LI , Fachao SHAN , Wenqi ZHAO , Meng SUN . Pore-throat structure characteristics and its impact on the porosity and permeability relationship of Carboniferous carbonate reservoirs in eastern edge of Pre-Caspian Basin[J]. Petroleum Exploration and Development, 2020 , 47(5) : 1027 -1041 . DOI: 10.1016/S1876-3804(20)60114-8
| [1] | BAGRINTSEVA K I. Carbonate reservoir rocks. New Jersey: John Wiley & Sons, 2015. |
| [2] | ALOTAIBI M B, AZMY R, NASR-EL-DIN H A. Wettability challenges in carbonate reservoirs. SPE 129972-MS, 2010. |
| [3] | MU Longxin, CHEN Yaqiang, XU Anzhu, et al. Technological progress and development directions of PetroChina overseas oil and gas field production. Petroleum Exploration and Development, 2020,47(1):120-128. |
| [4] | MOORE C H, WADE W J. Carbonate reservoirs: Porosity and diagenesis in a sequence stratigraphic framework. Amsterdam: Elsevier, 2013: 51-65. |
| [5] | HE Ling, ZHAO Lun, LI Jianxin, et al. Complex relationship between porosity and permeability of carbonate reservoirs and its controlling factors: A case of platform facies in Pre-Caspian Basin. Petroleum Exploration and Development, 2014,41(2):206-214. |
| [6] | EHRENBERG S N, NADEAU P H. Sandstone vs. carbonate petroleum reservoirs: A global perspective on porosity-depth and porosity-permeability relationships. AAPG Bulletin, 2005,89(4):435-445. |
| [7] | NELSON P H, KIBLER J E. Permeability-porosity relationships in sedimentary rocks. Log Analyst, 1994,35(3):38-62. |
| [8] | WEGER R J, EBERLI G P, BAECHLE G T, et al. Quantification of pore structure and its effect on sonic velocity and permeability in carbonates. AAPG Bulletin, 2009,93(10):1297-1317. |
| [9] | WANG Xiaomin, FAN Tailiang. Progress of research on permeability of carbonate rocks. Earth Science Frontiers, 2013,20(5):166-174. |
| [10] | L?N?Y A. Making sense of carbonate pore systems. AAPG Bulletin, 2006,90(9):1381-1405. |
| [11] | HULEA I N, NICHOLLS C A. Carbonate rock characterization and modeling: Capillary pressure and permeability in multimodal rocks: A look beyond sample specific heterogeneity. AAPG Bulletin, 2012,96(9):1627-1642. |
| [12] | QIN Ruibao, LI Xiongyan, LIU Chuncheng, et al. Influential factors of pore structure and quantitative evaluation of reservoir parameters in carbonate reservoirs. Earth Science Frontiers, 2015,22(1):251-259. |
| [13] | GUO Zhenhua, LI Guanghui, WU Lei, et al. Pore texture evaluation of carbonate reservoirs in Gasfield A, Turkmenistan. Acta Petrolei Sinica, 2011,32(3):459-465. |
| [14] | WAN Yun, ZHAN Jun, TAO Hui. Pore structure study of carbonate reservoir. Oil-Gasfield Surface Engineering, 2008,27(12):13-14. |
| [15] | WANG Qizong, ZHAO Shuping, WEI Qinlian, et al. Marine carbonate reservoir characteristics of the Middle Ordovician Majiagou Formation in Ordos Basin. Journal of Palaeogeography, 2012,14(2):229-242. |
| [16] | DENG Hucheng, ZHOU Wen, GUO Rui, et al. Pore structure characteristics and control factors of carbonate reservoirs: The Middle-Lower Cretaceous formation, AI Hardy cloth Oilfield, Iraq. Acta Petrologica Sinica, 2014,30(3):801-812. |
| [17] | WEI Li, WANG Zhenliang, FENG Qianghan, et al. Diagenesis in carbonate reservoir and pore structure characteristic from the Ordovician Ma51 sub-member reservoir in the northern Jingbian Gasfield. Nature Gas Geoscience, 2015,26(12):2234-2244. |
| [18] | JIN Zhimin, TAN Xiucheng, GUO Rui, et al. Pore structure characteristics and control factors of carbonate reservoirs: The Cretaceous Mishrif Formation, Halfaya oilfield, Iraq. Acta Sedimentologica Sinica, 2018,36(5):981-994. |
| [19] | LIU Hangyu, TIAN Zhongyuan, LIU Bo, et al. Pore types, origins and control on reservoir heterogeneity of carbonate rocks in Middle Cretaceous Mishrif Formation of the West Qurna Oilfield, Iraq. Journal of Petroleum Science and Engineering, 2018,171:1338-1349. |
| [20] | ANSELMETTI F S, LUTHI S, EBERLI G P. Quantitative characterization of carbonate pore systems by digital image analysis. AAPG Bulletin, 1998,82(10):1815-1836. |
| [21] | AGUILERA R. Incorporating capillary pressure, pore throat aperture radii, height above free-water table, and Winland r35 values on Pickett plots. AAPG Bulletin, 2002,86(4):605-624. |
| [22] | REZAEE M R, JAFARI A, KAZEMZADEH E. Relationships between permeability, porosity and pore throat size in carbonate rocks using regression analysis and neural networks. Journal of Geophysics and Engineering, 2006,3(4):370-376. |
| [23] | VERWER K, EBERLI G P, WEGER R J. Effect of pore structure on electrical resistivity in carbonates. AAPG Bulletin, 2011,95(2):175-190. |
| [24] | NORBISRATH J H, EBERLI G P, LAURICH B, et al. Electrical and fluid flow properties of carbonate microporosity types from multiscale digital image analysis and mercury injection. AAPG Bulletin, 2015,99(11):2077-2098. |
| [25] | ZHANG Kun, PANG Xiongqi, ZHAO Zhengfu, et al. Pore structure and fractal analysis of Lower Carboniferous carbonate reservoirs in the Marsel area, Chu-Sarysu Basin. Marine & Petroleum Geology, 2018,93:451-467. |
| [26] | WANG Shuqin, ZHAO Lun, CHENG Xubin, et al. Geochemical characteristics and genetic model of dolomite reservoirs in the eastern margin of the Pre-Caspian Basin. Petroleum Science, 2012,9(2):161-169. |
| [27] | BARDE J P, GRALLA P, HARWIJANTO J, et al. Exploration at the eastern edge of the Precaspian Basin: Impact of data integration on Upper Permian and Triassic prospectivity. AAPG Bulletin, 2002,86(3):399-415. |
| [28] | ZHAO Lun, CHEN Yefei, NING Zhengfu, et al. Stress sensitive experiments for abnormal overpressure carbonate reservoirs: A case from the Kenkiyak low-permeability fractured-porous oilfield in the littoral Caspian Basin. Petroleum Exploration and Development, 2013,40(2):194-200. |
| [29] | HAN Yujiao, ZHOU Cancan, FAN Yiren, et al. A new permeability calculation method using nuclear magnetic resonance logging based on pore sizes: A case study of bioclastic limestone reservoirs in the A oilfield of the Mid-East. Petroleum Exploration and Development, 2018,45(1):170-178. |
| [30] | ZHAO Wenzhi, SHEN Anjiang, QIAO Zhanfeng, et al. The genetic types and distinguished characteristics of dolostone and the origin of dolostone reservoirs. Petroleum Exploration and Development, 2018,45(6):923-935. |
| [31] | SCHMOKER J W, HALLEY R B. Carbonate porosity versus depth: A predictable relation for South Florida. AAPG Bulletin, 1982,66(12):2561-2570. |
| [32] | LUCIA F J. Carbonate reservoir characterization: An integrated approach. Berlin: Springer, 2007: 148-156. |
| [33] | SHI Xin, CHENG Xubin, WANG Juan, et al. Geochemical characteristics of the Carboniferours KT-I interval dolostone in eastern margin of coastal Caspian Sea Basin. Journal of Palaeogeography, 2012,14(6):777-785. |
| [34] | GUO Kai, CHENG Xiaodong, FAN Leyuan, et al. Characteristics and development mechanism of dolomite reservoirs in North Truva of Eastern Pre-Caspian Basin. Acta Sedimentologica Sinica, 2016,34(4):747-757. |
| [35] | CRAIG H. The measurement of oxygen isotope paleotemperatures: TONGIORGI E. Stable isotopes in oceanographic studies and paleotemperatures. Pisa: Consiglio Nazionale delle Richerche,Laboratorio di Geologia Nucleare, 1965: 161-182. |
| [36] | KEITH M L, WEBER J N. Isotopic composition and environmental classification of selected limestones and fossils. Geochem Cosmochim Acta, 1964,28(10):1787-1816. |
| [37] | EHRENBERG S N, EBERLI G P, KERAMATI M, et al. Porosity-permeability relationships in interlayered limestone- dolostone reservoirs. AAPG Bulletin, 2006,90(1):91-114. |
| [38] | XU Keqiang. Characteristics of hydrocarbon migration and accumulation and exploration practice in the eastern margin of the Pre-Caspian Basin. Beijing: Petroleum Industry Press, 2011: 91-105. |
| [39] | MIAO Qianyou, ZHU Xiaomin, LI Guobin, et al. Paleogeomorphology recovery and reservoir prediction of Upper Carboniferous in M Block, Pre-Caspian Basin. Earth Science, 2014,39(7):871-879. |
| [40] | SHEN Anjiang, ZHAO Wenzhi, HU Anping, et al. Major factors controlling the development of marine carbonate reservoirs. Petroleum Exploration and Development, 2015,42(5):545-554. |
| [41] | LOUCKS R G. Paleocave carbonate reservoirs: Origins, burial-depth modifications, spatial complexity, and reservoir implications. AAPG Bulletin, 1999,83(11):1795. |
| [42] | LIU Dongzhou. Petroleum geology of superimposed petroliferous Pre-Caspian Basin and hydrocarbon accumulation mechanism in pre-salt petroleum system of the east Pre-Caspian Basin. Beijing: China University of Geosciences(Beijing), 2006. |
| [43] | ZHAO Lun, LI Jianxin, LI Kongchou, et al. Development and genetic mechanism of complex carbonate reservoir fractures: A case from the Zanarol Oilfield, Kazakhstan. Petroleum Exploration and Development, 2010,37(3):304-309. |
| [44] | PAN Wenqing, HOU Guiting, QI Yingmin, et al. Discussion on the development models of structural fractures in the carbonate rocks. Earth Science Frontiers, 2013,20(5):188-195. |
| [45] | ZHAO Xin, JIANG Bo, ZHANG Shangkun, et al. Main controlling factors of productivity and development strategy of CBM wells in Block 3 on the eastern margin of Ordos Basin. Acta Petrolei Sinica, 2017,38(11):1310-1319. |
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