非常规龙马溪组和牛蹄塘组页岩取心技术

Abstract

Abstract:

During the drilling process of the shale gas wells, obtaining the high quality core samples is an important prerequisite for the reservoir evaluation. Aiming at the problems such as the long coring footage, the low core recovery and the poor efficiency of the conventional coring technology, and based on the analysis of the geological characteristics of the coring layer, we optimized and improved the tools, the bit, the parameters and the technology. In the field application of the multiple shale gas wells, the average core recovery was more than 98 % and the penetration rate was up to 9 m/h. The results showed that this technology had wonderful performance in improving the core recovery and the penetration rate, and successfully resolved the various problems in the process of the coring in the shale gas wells. In the meantime it provided important support for the later development of the shale gas wells.

Key words: unconventional, shale gas, coring, penetration rate, Longmaxi formation, Niutitang formation

CLC Number:

TE92

Cao Huaqing,Gao Changbin. Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field[J].Reservoir Evaluation and Development, 2018, 8(2): 80-84.

Figures/Tables 12

Fig. 1

Table 1

Fig. 2

Table 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Table 3

References 10

[1]	靳雅夕, 蔡潇, 袁艺 , 等. 渝东南地区志留系龙马溪组页岩黏土矿物特征及其地质意义[J]. 中国煤炭地质, 2015,27(2):21-24. doi: 10.3969/j.issn.1674-1803.2015.02.05
[2]	王兰生, 廖仕孟, 陈更生 , 等. 中国页岩气勘探开发面临的问题与对策[J]. 天然气工业, 2011,31(12):119-122. doi: 10.3787/j.issn.1000-0976.2011.12.021
[3]	李庆辉, 陈勉, 金衍 , 等. 页岩气储层岩石力学特性及脆性评价[J]. 石油钻探技术, 2012,40(4):17-22. doi: 10.3969/j.issn.1001-0890.2012.04.004
[4]	琚宜文, 卜红玲, 王国昌 .页岩气储层主要特征及其对储层改造的影响[J].地球科学进展, 2014, 29,(4):492-506. doi: 10.11867/j.issn.1001-8166.2014.04.0492
[5]	雷云军, 王朝普, 黄名召 , 等. 川7-5型取心工具在青海跃灰101井的应用[J]. 青海石油, 2006,24(1):78-80.
[6]	梁海明, 裴学文, 赵波 .页岩地层取心技术研究及现场应用[J].石油钻探技术, 2016,44(1) 39-43. doi: 10.11911/syztjs.201601008
[7]	姜伟 . 水平井及大斜度井下部钻具组合的弹性稳定性[J]. 石油机械, 1995,23(11):32-37.
[8]	李子丰, 梁尔国 . 钻柱力学研究现状及进展[J]. 石油钻采工艺, 2008,30(2):1-8.
[9]	孙少亮, 尹家峰 . JH-1井取心实践与认识[J]. 石油钻采工艺, 2012,34(5):115-117. doi: 10.3969/j.issn.1000-7393.2012.05.030
[10]	孔志刚, 于希 . 辽河油田古潜山储层钻井取心技术[J]. 石油钻探技术, 2014,42(3):50-54. doi: 10.3969/j.issn.10010890.2014.03.010

层号	顶深/ m	底深/ m	厚度/ m	常规测井				ECS测井				ELAN成果						总气含量/(m³·t^-1) (地层压力系数=1.1)
				自然伽马/ API	深电阻率/ (Ω·m)	密度/ (g·cm^-3)	中子, %	硅质含量, %	黏土含量, %	碳酸盐含量, %	黄铁矿含量, %	有效孔隙度,%			TOC,%			总气含量/(m³·t^-1) (地层压力系数=1.1)
				自然伽马/ API	深电阻率/ (Ω·m)	密度/ (g·cm^-3)	中子, %	硅质含量, %	黏土含量, %	碳酸盐含量, %	黄铁矿含量, %	最大	最小	均值	最大	最小	均值	最大	最小	均值
1	3 798.0	3 805.4	7.4	177.0	0.4	2.7	11.8	47.3	25.9	22.6	3.3	3.0	0.5	1.7	6.8	2.3	5.6	0.59	0.20	0.49
2	3 805.4	3 813.2	7.8	269	0.5	2.7	13.1	57.8	25.1	10.3	5.4	2.8	0.6	1.3	5.0	2.7	4.1	0.44	0.23	0.36
3	3 813.2	3 839.8	26.6	550.0	0.2	2.6	13.1	64.6	19.3	10.3	5.2	3.1	0.6	2.0	10.5	4.8	7.9	0.91	0.42	0.69
4	3 839.8	3 845.0	5.2	484.0	0.8	2.7	9.9	49.4	23.8	20.6	3.1	2.6	0.2	1.4	7.5	2.3	4.7	0.65	0.20	0.41
5	3 871.0	3 880.7	9.7	187.0	3.8	2.7	8.6	57.5	12.3	24.6	4.8	2.2	0.4	1.0	5.1	1.0	2.7	0.44	0.10	0.24

稳定器情况	临界钻压/kN
取心筒两端加稳定器	384.4
取心筒上端加稳定器	182.9
取心筒下端加稳定器	110.3
不加稳定器	49.0

[1]	YAO Hongsheng, WANG Wei, HE Xipeng, ZHENG Yongwang, NI Zhenyu. Development practices of geology-engineering integration in complex structural area of Nanchuan normal pressure shale gas field [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 537-547.
[2]	LI Jingchang, LU Ting, NIE Haikuan, FENG Dongjun, DU Wei, SUN Chuanxiang, LI Wangpeng. Confidence evaluation of fractures seismic detection in shale gas formations on WY23 Pad in Weirong [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 614-626.
[3]	XIA Haibang, HAN Kening, SONG Wenhui, WANG Wei, YAO Jun. Pore scale fracturing fluid occurrence mechanisms in multi-scale matrix-fracture system of shale gas reservoir [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 627-635.
[4]	HOU Dali, HAN Xin, TANG Hongming, GUO Jianchun, GONG Fengming, SUN Lei, QIANG Xianyu. Primary research on expression of kerogen in Longmaxi Shale and its adsorption characteristics [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 636-646.
[5]	HAN Kening, WANG Wei, FAN Dongyan, YAO Jun, LUO Fei, YANG Can. Production forecasting for normal pressure shale gas wells based on coupling of production decline method and LSTM model [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 647-656.
[6]	ZHANG Jiawei, LIU Xiangjun, XIONG Jian, LIANG Lixi, REN Jianfei, LIU Baiqu. Discrete element simulation study on fracture propagation law of dual well synchronous fracturing [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 657-667.
[7]	XUE Gang, XIONG Wei, ZHANG Peixian. Genesis analysis and effective development of normal pressure shale gas reservoir: A case of Wufeng-Longmaxi shale gas reservoir in southeast margin of Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(5): 668-675.
[8]	LOU Zhanghua, ZHANG Xinke, WU Yuchen, GAO Yuqiao, ZHANG Peixian, JIN Aimin, ZHU Rong. Fluid response characteristics of shale gas preservation differences in Nanchuan and its adjacent blocks in Sichuan Basin [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 451-458.
[9]	HU Zhijian, LI Shuxin, WANG Jianjun, ZHOU Hong, ZHAO Yulong, ZHANG Liehui. Productivity evaluation of multi-stage fracturing horizontal wells in shale gas reservoir with complex artificial fracture occurrence [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 459-466.
[10]	LIN Hun, SUN Xinyi, SONG Xixiang, MENG Chun, XIONG Wenxin, HUANG Junhe, LIU Hongbo, LIU Cheng. A model for shale gas well production prediction based on improved artificial neural network [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 467-473.
[11]	LIU Honglin,ZHOU Shangwen,LI Xiaobo. Application of PCA plus OPLS method in rapid reserve production rate prediction of shale gas wells [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(4): 474-483.
[12]	LU Bi,HU Chunfeng,MA Jun. Influencing factors and countermeasures of inter-well interference of fracturing horizontal wells in Nanchuan shale gas field [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 330-339.
[13]	QIU Xiaoxue,ZHONG Guanghai,LI Xiansheng,CHEN Meng,LING Weitong. CFD simulation of flow characteristics of shale gas horizontal wells with different inclination [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 340-347.
[14]	NIE Yunli, GAO Guozhong. Classification of shale gas “sweet spot” based on Random Forest machine learning [J]. Petroleum Reservoir Evaluation and Development, 2023, 13(3): 358-367.
[15]	ZHANG Longsheng,WANG Weiheng. Study and application of a high temperature foaming agent in anionic-nonionic system namely HDHP: A case study of shale gas wells in Dongsheng Block, Sichuan Basin [J]. Reservoir Evaluation and Development, 2023, 13(2): 240-246.

Shale coring technology in Longmaxi formation and Niutitang formation of unconventional shale gas field

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 10

Related Articles 15

Metrics

Comments

Recommended 10