Paleokarst Reservoir Recognition and Geology Modeling of Ordovician Carbonate of Block Ha 6 in Tarim Basin

Abstract

Abstract: The Ordovician carbonate reservoir in Block Ha 6 is characterized by karst fracture-cavern in buried hill. The reservoir space includes visceral cavity, burrow pore, intragranular dissolution pore, moldic pore, faults, fracture, cave system and collapsed cavern-ceiling crackle system. In this paper, series models were built on the basis of collapsed cavern-ceiling crackle system in Block Ha 6, fracture-cavern model, well logging-seismic integrated model, seismic forward model, and reservoir model were developed. "Moniliform" reflection of seismic was actually great collapsed cavern and fracture, but the subsurface river system could not be recognized effectively by current seismic technology. Ceiling crackle was defined. The ceiling crackle caused by top cave collapse was main oil and gas production interval in Block Ha 6. Secondly, the break-out dome was also oil and gas production interval; oil and gas could be produced through ceiling crackle. Therefore, the concept of ceiling crackle was very important to well drilling, well logging, acid fracturing test and production test

Key words: Tarim Basin, Halahatang area, Ordovician, carbonate rock, paleokarst reservoir, collapsed cave-ceiling crackle modeling

CLC Number:

P618.13

Zhang Lijuan, Ma Qing, Fan Qiuhai, Zhu Yongfeng, Gao Chunhai, Cai Quan, Zhang Shuo and Liu Chenxi. Paleokarst Reservoir Recognition and Geology Modeling of Ordovician Carbonate of Block Ha 6 in Tarim Basin[J]. China Petroleum Exploration, 2012, 17(2): 1-7,87.

[1]	Li Guoxin, Yang Yu, Song Yong, Zhang Guosheng, Guo Xuguang, Yan Weipeng, Huang Fuxi, Wang Shaoyong, Yuan Ming. Major Progress in “14th Five-Year Plan” Period and Outlook of Oil and Gas Exploration of PetroChina [J]. China Petroleum Exploration, 2026, 31(1): 1-13.
[2]	Zhao Zhe, Fan Liyong, Huang Zhengliang, Cheng Dangxing, Hu Jianling, Chu Meijuan, Yan Wei, Hu Xinyou, Mao Zhiqi, Cao Jingjingi, Tian Lianjie. The progress of oil and gas exploration during the 14^th Five-Year Plan period and future exploration directions in the Ordos Basin [J]. China Petroleum Exploration, 2026, 31(1): 64-79.
[3]	YangHaijun, XuZhenping, YangXianzhang, TangYangang, MoTao, ChenCai, XieZhou, LuoXinsheng, WangBin. Progressand Future Direction of Oil and Gas Explorationin theTarim Basinduring the “14^th Five-Year Plan” Period [J]. China Petroleum Exploration, 2026, 31(1): 80-99.
[4]	Li Tao, Lei Fuping, Hang Wei, Yang Jun, Zhao Leyi, Li Yudong, Liu Feng, Zhao Wei, Yang Yu, Liao Honghui. Gas accumulation conditions and models in the Ordovician system on the western side of the Central Paleohigh in the Ordos Basin——Taking Huan County as an example [J]. China Petroleum Exploration, 2026, 31(1): 146-159.
[5]	Ran Junshuai, Li Bing, Yang Suju, Sha Xuguang, Xu Qinqi. Dynamic Modeling of Ordovician Petroleum Accumulation and Exploration Prospectivity, South-Central Tarim Basin [J]. China Petroleum Exploration, 2026, 31(1): 160-179.
[6]	Zhang Lijuan, Su Zhou, Liu Yongfu, Zhang Yintao. Exploration discovery in ultra-deep marine carbonate rocks and enlightenments, Tarim Basin [J]. China Petroleum Exploration, 2025, 30(3): 25-39.
[7]	Zhang Ronghu, Jin Wudi, Zeng Qinglu, Yang Xianzhang, Yu Chaofeng, Song Bing, Wang Ke, Li Dong. Analysis of key conditions for gas accumulation and favorable replacement fields in 10000-meter deep formations in Kuqa Depression, Tarim Basin [J]. China Petroleum Exploration, 2025, 30(3): 51-64.
[8]	Sun Chonghao, Duan Junmao, Luo Xinsheng, Zheng Jianfeng, Shi Lei, Xiong Ran, Hu Huan, Peng Zijun. Sedimentary characteristics and deposition modes of the Upper Cambrian Lower Qiulitage Formation in Xiaoerblak outcrop area, western Tabei area [J]. China Petroleum Exploration, 2025, 30(3): 109-125.
[9]	Wu Shiqiang, Guo Libin, Xu Shang, Man Huihui, Luo Shuxing, Li Xiaoling, Zhao Wen, Kong Jinping. Lithofacies types and reservoir characteristics of lacustrine carbonate rocks in the third member of Qianjiang Formation, Qianjiang Sag [J]. China Petroleum Exploration, 2025, 30(2): 42-53.
[10]	Liu Jingjing, Li Jun, Wu Cahngwu, Guo Rongtao, Guo Yongqiang, Gao Weiyuan, Shi Danni, Wu Gaokui. Sedimentary modes of high-quality reservoirs in sub-salt lacustrine carbonate rocks in Santos Basin [J]. China Petroleum Exploration, 2025, 30(2): 54-63.
[11]	Wang Yuman, Huang Zhengliang, Ma Zhanrong, Chen Rubiao. Geological conditions and accumulation mode of shale gas in the Ordovician Wulalike Formation in the northwestern margin of Ordos Basin [J]. China Petroleum Exploration, 2025, 30(1): 123-141.
[12]	Zhao Wen, Kong Jinping, Wen Hui, Yang Xi. Characteristics and main control factors for enrichment and high-yield production of carbonate oil reservoirs in the third member of the Paleogene Qianjiang Formation in Tankou bulge zone of Qianjiang Sag [J]. China Petroleum Exploration, 2024, 29(6): 56-67.
[13]	Xie Wuren, Wen Long, Wang Zecheng, Luo Bing, Zhou Gang, Li Wenzheng, Chen Xiao, Fu Xiaodong, Wu Saijun, Xin Yongguang, Hao Yi, Ma Shiyu. Hydrocarbon accumulation conditions and exploration potential of deep–ultradeep carbonate rocks in Sichuan Basin [J]. China Petroleum Exploration, 2024, 29(5): 61-76.
[14]	Wang Qinghua, Yang Haijun, Li Yong, Cai Zhenzhong, Yang Xianzhang, Xie Huiwen, Chen Cai, Sun Chunyan. Significant discovery and significance of oil and gas exploration Well Yetan1 of Kekeya peripheral in the Front Mountain of Southwest area of Tarim Basin [J]. China Petroleum Exploration, 2024, 29(4): 1-17.
[15]	Wang Qinhua, Yang Haijun, Cai Zhenzhong, Li Yong, Yang Xianzhang, Chen Cai, Chen Changchao. Exploration breakthrough and significance of Ordovician fault controlled karst hydrocarbon reservoirs of Well Luotan1 in Maigaiti Slope of Tarim Basin [J]. China Petroleum Exploration, 2024, 29(2): 1-15.

Paleokarst Reservoir Recognition and Geology Modeling of Ordovician Carbonate of Block Ha 6 in Tarim Basin

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics