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

傅海成; 邹长春; 肖承文; 祁兴中; 王儒安; 赵丹颖; 孙健

doi:10.11932/karst20150206

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

doi: 10.11932/karst20150206

1.
中国石油勘探开发研究院/中国地质大学（北京）地下信息探测技术与仪器教育部重点实验室
2.
中国地质大学（北京）地下信息探测技术与仪器教育部重点实验室
3.
中国石油塔里木油田分公司
4.
中国石油测井有限公司

基金项目: 国家油气重大专项“油气测井重大技术装备”（2011ZX05020-008）

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出版历程
- 发布日期: 2015-04-25

Characteristics of imaging logging response and indication of paleokarst development in Lungu area

1.
Research Institute of Petroleum Exploration & Development, PetroChina/Key Laboratory of Geo-Dectection, Ministry of Education，China University of Geosciences
2.
Key Laboratory of Geo-Dectection, Ministry of Education，China University of Geosciences
3.
Tarim Oilfield Company, PetroChina
4.
CNPC Logging

摘要

摘要: 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。
- 轮古地区 /
- 碳酸盐岩储层 /
- 古岩溶 /
- 成像测井 /
- 溶洞 /
- 角砾
Abstract: The Ordovician carbonate reservoir in the Lungu area of Tarim basin has been reformed by the superimposition of multi-stage tectonic movement and karstification. Primary oil and gas storage space can be found in the secondary pore structures, such as caves and fractures, formed by paleokarstification. Evaluation of karstification is an important area of research for evaluation of carbonate reservoirs. Based on processing of a large set of imaging logging data from the Lungu area, and mainly through analysis of the imaging logging response of caves and fractures, karstification rules are determined for the area. In imaging logging, a high conductivity fracture often manifests as a brown-black sine curve, generally with higher continuity; a corrosion fracture generally corresponds to a sine curve with irregular edges; a unfilled cave appears as dark clumps with local light colored clumps; additionally, fully filled caves, bedding and other sedimentary phenomenon can be observed in the resulting imaging logging map. The different levels of karstification can be identified by fractures and breccias in caves, which are interpreted by imaging logging. In western Lungu,the breccias in some large caves have been completely corroded and were filled with mud and sand, indicating a high level of karstification in this area. In central Lungu region, where some caves have greater amounts of breccia, the size of the cave produced by the corrosion of a single strike fracture is clearly smaller than that in western Lungu. This indicates weaker karstification in central Lungu compared with the western region. In eastern Lungu, small caves have not been produced by the corrosion of single strike fractures, only proto-caves or cross cracks and karst fissures can be observed by imaging logging. Statistical analysis of the number of caves in Lungu area indicates that the distribution of cave reservoirs is mainly affected by epigenetic karst zones.
- Lungu area /
- carbonate reservoir /
- paleokarst /
- imaging logging /
- cave /
- breccia

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参考文献(28)

[1]	顾家裕，周兴熙，等．塔里木盆地轮南潜山岩溶及油气分布规律［M］．北京：石油工业出版社，2001：67-104.
[2]	贾承造．中国塔里木盆地构造特征与油气［M］．北京：石油工业出版社，1997：390-425.
[3]	陈景山，李忠，王振宇，等．塔里木盆地奥陶系碳酸盐岩古岩溶作用与储层分布［J］. 沉积学报, 2007,25(6):858-868.
[4]	Loucks R G. Paleocave carbonate reservoir: origins, burial-depth modifications, spatial complexity, and reservoir implications［J］.AAPG Bulletin,1999, 83(11):1795-1834.
[5]	陈善勇. 塔里木盆地轮古西地区奥陶系古岩溶储层特征［J］. 西安石油大学学报(自然科学版),2004,19 (4): 9-12.
[6]	Zhang Baomin, Liu Jingjiang. China's Karst Reservoir Classification and Characteristics and Related Theories［J］.Petroleum Exploration and Development,2009,36(1): 12-29(Online English edition of the Chinese language journal).
[7]	王拥军，张宝民，董月霞, 等．南堡凹陷奥陶系潜山岩溶塌陷体识别、储层特征及油气勘探前景［J］. 石油学报, 2012,33 （4）:570-580.
[8]	Dembicki E A, Machel H G. Recognition and Delineation of Paleokarst Zones by the Use of Wireline Logs in the Bitumen-Saturated Upper Devonian Grosmont Formation of Northeastern Alberta, Canada［J］. AAPG Bulletin，1996，80(5): 695-712.
[9]	Wu X S, Yang L, Pan W Q, et al. Logging Geology Study of the Caverned Paleokarst Reservoir Distribution［J］. Petroleum Science，2005, 2(2):71-75.
[10]	Hareyani Zabidia, Michael Henry De Freitas. Re-evaluation of rock core logging for the prediction of preferred orientations of karst in the Kuala［J］. Engineering Geology，2011, 117:159-169.
[11]	Zhang B, Zheng R C, Wang X B, et al. Paleokarst features and reservoir distribution in the Huanglong Formation of eastern Sichuan［J］. Petroleum Exploration And Development,2011,38(3): 257-267(Online English edition of the Chinese language journal).
[12]	Laskow M, Gendler M, Goldberg I, et al. Deep confined karst detection, analysis and paleohydrology reconstruction at a basinwide scale using new geophysical interpretation of borehole logs［J］. Journal of Hydrology,2011,406:158-169.
[13]	Julia F W Gale, Leonel A Gomez. Late opening-mode fractures in karst-brecciated dolostones of the Lower Ordovician Ellenburger Group, west Texas: Recognition, characterization, and implications for fluid flow［J］. AAPG Bulletin,2007,91(7):1005-1023.
[14]	曹建文，金意志，夏日元，等．塔河油田4区奥陶系风化壳古岩溶作用标志及控制因素分析［J］. 中国岩溶, 2012,31(2):220-226.
[15]	景建恩, 梅忠武, 李舟波．塔河油田奥陶系碳酸盐岩岩溶发育模式的测井分析［J］. 〖JP2〗吉林大学学报(地球科学版),2003,33(2):236-241.〖JP〗
[16]	Jan Urban, Bartomiej Rzonca. Karst systems analyzed using borehole logs-Devonian carbonates of the ?wi?tokrzyskie (HolyCross) Mountains, central Poland ［J］ . Geomorphology 2009 , 112:27-47.
[17]	吴胜和，欧阳健．塔里木盆地轮南地区奥陶系岩溶体系的测井分析［J］. 石油大学学报(自然科学版), 1994,18(2):123-127.
[18]	赵良孝, 补勇,等编著.碳酸盐岩储层测井评价技术［M］，北京：石油工业出版社，1994：30-43.
[19]	樊政军, 柳建华, 张卫峰. 塔河油田奥陶系碳酸盐岩储层测井识别与评价［J］. 石油与天然气地质,2008,29(1):61-65.
[20]	赵军，李宗杰，虞兵，等．碳酸盐岩洞穴充填物及其充填程度的测井判别方法［J］. 中国岩溶, 2013,32(2):225-230.
[21]	Yang W J, Xiao C W, Liu L F, et al. Logging evaluation of the Ordovician carbonate reservoir beds in the Lungudong region, Tarim Basin［J］. Acta Geologica Sinica,2010,84(5):1141-1156.
[22]	钟广法，惠冠军，杨海军，等．塔里木盆地轮古东地区奥陶系古溶洞的成像测井预测［J］．天然气工业, 2009, 29(10):24-27. 〖JP〗
[23]	戴传瑞，邹伟宏，杨海军，等．轮古西潜山岩溶储层发育特征与评价［J］. 东北石油大学学报, 2012, 36(4):24-29.
[24]	倪新锋,杨海军，沈安江，等．塔北地区奥陶系灰岩段裂缝特征及其对岩溶储层的控制［J］. 石油学报, 2010,31(6):934-940.
[25]	Wang W L, Pang X Q, Liu L F, et al. Ordovician Carbonate Reservoir Bed Characteristics and Reservoir Forming Conditions in the Lungudong Region of the Tarim Basin［J］. Acta Geologica Sinica,2010,84(5):1170-1179.
[26]	Hu X L, Fan T L, Gao Z Q, et al. Combination patterns and depositional characteristics of Ordovician carbonate banks in the Western Tarim Basin, China［J］. Acta Geologica Sinica,2012,86(4): 894-911.
[27]	倪新锋,杨海军，沈安江，等．塔北地区奥陶系灰岩段裂缝特征及其对岩溶储层的控制［J］. 石油学报, 2010,31(6):934-940.
[28]	陈利新，潘文庆，梁彬，等．轮南奥陶系潜山表层岩溶储层的分布特征［J］. 中国岩溶, 2011,30(3):327-333.