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]	FANG Zhixiong. Challenges and countermeasures for exploration and development of normal pressure shale gas in southern China [J]. Reservoir Evaluation and Development, 2019, 9(5): 1-13.
[2]	GUO Tonglou. A few geological issues in shale gas exploration and development [J]. Reservoir Evaluation and Development, 2019, 9(5): 14-19.
[3]	LIANG Xing,ZHANG Chao,ZHANG Pengwei,ZHANG Lei,WANG Gaocheng,PAN Yuanwei,ZHAO Chunduan,ZHANG Jiehui,WANG Weixu,QIU Kaibin. Research and application of geomechanics of shale gas in deep mountain of Yichang, Hubei [J]. Reservoir Evaluation and Development, 2019, 9(5): 20-31.
[4]	HE Xipeng,QI Yanping,HE Guisong,GAO Yuqiao,LIU Ming,ZHANG Peixian,WANG Kaiming. Further understanding of main controlling factors of normal pressure shale gas enrichment and high yield in the area with complex structure of the southeast area of Chongqing [J]. Reservoir Evaluation and Development, 2019, 9(5): 32-39.
[5]	YANG Zhenheng,ZHAI Changbo,DENG Mo,BAO Yunjie,ZHANG Peixian,ZHANG Qingzhen,XIE Xiaomin. Characteristics and significance of hydrocarbon-forming organisms of Wufeng-Longmaxi formation in Pengshui and its adjacent areas [J]. Reservoir Evaluation and Development, 2019, 9(5): 40-44.
[6]	LIU Hua,WANG Weihong,WANG Yanyan,GU Hongtao,JIN Bingyao. Productivity characterization method of shale gas wells [J]. Reservoir Evaluation and Development, 2019, 9(5): 63-69.
[7]	DAI Cheng,HU Xiaohu,FANG Sidong,GUO Yandong. Numerical simulation for seepage of shale gas reservoir development based on microseismic data and embedded fracture modeling [J]. Reservoir Evaluation and Development, 2019, 9(5): 70-77.
[8]	JIANG Tingxue,SU Yuan,BIAN Xiaobing,MEI Zongqing. Network fracturing technology with low cost and high density for normal pressure shale gas [J]. Reservoir Evaluation and Development, 2019, 9(5): 78-83.
[9]	ZHU Liang,LOU Yishan,SHEN Jianzhong,HE Qing,QIN Du. Distribution rule of formation anti-drillability parameters in shale gas block of Nanchuan and its application [J]. Reservoir Evaluation and Development, 2019, 9(5): 84-88.
[10]	HE Shun,QIN Qirong,FAN Cunhui,ZHOU Jiling,ZHONG Cheng,HUANG Wei. Shale Reservoir characteristics and influencing factors of Wufeng-Longmaxi formation in Dingshan area, Southeast Sichuan [J]. Reservoir Evaluation and Development, 2019, 9(4): 61-67.
[11]	TANG Jianxin. Comparative studies on methane isothermal adsorption models of shale of Longmaxi formation in Pengshui area [J]. Reservoir Evaluation and Development, 2019, 9(4): 73-78.
[12]	XIA Haibang. Research and application of soluble bridge plug in Nanchuan shale gas field [J]. Reservoir Evaluation and Development, 2019, 9(4): 79-82.
[13]	YUAN Hang,GU Hongtao,LI Jiaxin. Research and field application of downhole throttling technology for shale gas wells in south block of Pingqiao area [J]. Reservoir Evaluation and Development, 2019, 9(4): 83-88.
[14]	Li Yongming,Wu Lei,Chen Xi. Research on productivity of fractured horizontal wells in shale gas reservoirs based on anomalous diffusion model [J]. Reservoir Evaluation and Development, 2019, 9(1): 72-79.
[15]	Wang Yuhai,Xia Haibang,Bao Kai,Qiu Weidong. Research and application of jet pump technology in drainage gas recovery of shale gas at atmospheric pressure [J]. Reservoir Evaluation and Development, 2019, 9(1): 80-84.

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