Characteristics and well location deployment ideas of strike-slip fault controlled carbonate oil and gas reservoirs: A case study of the Tarim Basin

被引：0

作者：

Deng X. ^{[1
]}

Yan T. ^{[1
]}

Zhang Y. ^{[1
]}

Wan X. ^{[1
]}

Feng K. ^{[1
]}

Yuan A. ^{[1
]}

Yao C. ^{[1
]}

Xiao C. ^{[1
]}

机构：

[1] Exploration and Development Research Institute, PetroChina Tarim Oilfield Company, Korla

来源：

Natural Gas Industry | 2021年 / 41卷 / 03期

关键词：

Carbonate rock; Strike-slip fault; Fault controlled oil and gas reservoir; Northern depression of the Tarim Basin; Ordovician; Well location deployment;

D O I：

10.3787/j.issn.1000-0976.2021.03.003

中图分类号：

学科分类号：

摘要：

Carbonate oil and gas reservoirs in the Tarim Basin are one of the important fields of deep oil and gas exploration and development in China. In recent years, the exploration targets in this basin have gradually shifted to the northern depression which is mainly controlled by faults. However, the efficient development of oil and gas in this area is hampered by the unclear mechanisms of fault controlled reservoirs and hydrocarbon accumulation, great reservoir depth and high development costs. After investigating the regional geological situations in the northern depression of the Tarim basin, this paper systematically analyzes the characteristics of fault controlled carbonate oil and gas reservoirs and their reservoirs and clarified the control effect of strike-slip faults on oil and gas reservoirs. On this basis, the ideas on the well placement in this type of reservoirs were put forward. And the following research results were obtained. First, the strike-slip faults of Late Caledonian, Late Hercynian and Yanshan period are developed in the northern depression of the Tarim Basin, which form a three-layer structural style. Second, the carbonate reservoirs in the northern depression are mainly distributed in Ordovician Yijianfang Formation-Yingshan Formation. The reservoir space mainly includes pores, vugs and fractures which are formed by dissolution and tectonic rupture. The reservoirs are reworked strongly along the faults, and dissolved caverns and cavities are well developed. And thus, three types of fault controlled dissolved reservoirs are developed, i.e., cavern sealing type, cavern edge type and fracture-vug type. Third, discordogenic strike-slip faults have an obvious effect of "reservoir control, hydrocarbon accumulation control and enrichment control", and the NE trending fault is dominant in controlling hydrocarbon accumulation. Fourth, the high-efficiency well characteristics of "strike-slip fault + positive geomorphology + multi-phase bead reflection" in the main oil source are summarized, and the well location deployment method of "four determinations" is put forward, including zone determination, stage determination, well determination and trajectory determination. In conclusion, the new well location deployment idea improves the drilling success rate and the efficient well ratio, realizes the efficient development of fault controlled reservoirs in the Tarim Basin and is of referential significance to the development deployment of similar oil and gas reservoirs. © 2021, Natural Gas Industry Journal Agency. All right reserved.

引用

页码：21 / 29

页数：8

共 20 条

[1]

KANG Yuzhu, The progress for petroleum exploration of marine Paleozoic in Tarim Basin, Xinjiang Petroleum Geology, 23, 1, pp. 76-78, (2002)

[2]

WU Guanghui, YANG Haijun, QU Tailai, Et al., The fault system characteristics and its controlling roles on marine carbonate hydrocarbon in the central uplift, Tarim Basin, Acta Petrologica Sinica, 28, 3, pp. 793-805, (2012)

[3]

LIAO Tao, HOU Jiagen, CHEN Lixin, Et al., Fault controlling on non-exposed karst fracture-vug reservoirs of the Ordovician in Halahatang Oilfield, northern Tarim Basin, Journal of Palaeogeography, 18, 2, pp. 221-235, (2016)

[4]

LI Xiangwen, FENG Xukui, LIU Yonglei, Et al., Characteristic of the strike-slip faults system and effect of faults on reservoir and hydrocarbon accumulation in Tazhong area, China, Geophysical Prospecting for Petroleum, 57, 5, pp. 764-774, (2018)

[5]

NI Xinfeng, ZHANG Lijuan, SHEN Anjiang, Et al., Diagenesis and pore evolution of the Ordovician karst reservoir in Yengimahalla-Hanilcatam region of Tarim Basin, Journal of Palaeogeography, 12, 4, pp. 467-479, (2010)

[6]

ZHU Guangyou, YANG Haijun, ZHU Yongfeng, Et al., Study on petroleum geological characteristics and accumulation of carbonate reservoirs in Hanilcatam area, Tarim Basin, Acta Petrologica Sinica, 27, 3, pp. 827-844, (2011)

[7]

ZHENG Xiaoli, AN Haiting, WANG Zujun, Et al., The segmentation features of strike-slip fault and its relation with the fault and reservoirs in Halahatang Area, north Tarim Basin, Journal of Zhejiang University (Science Edition), 45, 2, pp. 219-225, (2018)

[8]

ZHU Guangyou, LIU Xingwang, ZHU Yongfeng, Et al., The characteristics and the accumulation mechanism of complex reservoirs in the Hanilcatam area, Tarim Basin, Bulletin of Mineralogy, Petrology and Geochemistry, 32, 2, pp. 231-242, (2013)

[9]

LIU Xin, JING Bing, SUN Dong, Et al., Seismic reflection characteristics of high efficient wells in carbonate reservoirs in western Tazhong area, Tarim Basin, Xinjiang Petroleum Geology, 32, 3, pp. 301-304, (2011)

[10]

AN Haiting, LI Haiyin, WANG Jianzhong, Et al., Tectonic evolution and its controlling on oil and gas accumulation in the northern Tarim Basin, Geotectonica et Metallogenia, 33, 1, pp. 142-147, (2009)

← 1 2 →