Analysis on influencing factors of single/multi-layer development of coalbed methane field: A case study of Baode Block

Authors

ZHANG Lei, China United Coalbed Methane National Engineering Research Center Co. Ltd., Beijing 100095, China; PetroChina Coalbed Methane Company Limited, Beijing 100028, ChinaFollow
XU Fengyin, China United Coalbed Methane National Engineering Research Center Co. Ltd., Beijing 100095, China; PetroChina Coalbed Methane Company Limited, Beijing 100028, China
LI Ziling, PetroChina Coalbed Methane Company Limited, Beijing 100028, China
ZHANG Wei, PetroChina Coalbed Methane Company Limited, Beijing 100028, China
HOU Wei, China United Coalbed Methane National Engineering Research Center Co. Ltd., Beijing 100095, China; PetroChina Coalbed Methane Company Limited, Beijing 100028, China
ZHANG Qingfeng, PetroChina Coalbed Methane Company Limited, Beijing 100028, China
ZHANG Wen, PetroChina Coalbed Methane Company Limited, Beijing 100028, China
FAN Hongbo
LI Yongchen, PetroChina Coalbed Methane Company Limited, Beijing 100028, China

Abstract

Baode Block in the eastern margin of Ordos Basin is the first coalbed methane field of middle-low rank coal with 500 million cubic meters of production capacity constructed and reached in China, and it is also a benchmark in the coalbed methane industry there. During the development of Baode Block, good results are obtained by the commingled development of two sets of main coal layers, which are better than that of single-layer development. However, poor development result is obtained locally in the commingled development of some wells under the same development conditions, which is poorer than that of single-layer development. Therefore, overall evaluation was performed for Baode Block from the points of geological conditions, gas reservoir characteristics and gas production of the single/multi-layer commingled development wells in each coal bed. According to the research, the geological conditions of coalbed methane are the essential factors to control the result of single/multi-layer commingled production, which will control the CBM reservoir and influence the CBM production together with the reservoir. Herein, the difference in the effect of single/multi-layer drainage was determined in accordance with the main quantitative indicators, and the optimal quantitative evaluation indicators of single/multi-layer development of coalbed methane were determined by preferentially selecting 1 set of coal layers. That is, the original formation pressure difference is not more than 0.6 MPa, the critical desorption pressure difference is less than 0.4 MPa, and the permeability difference is within 2×10⁻³ μm² for the two sets of coal layers, which are suitable for commingled development of coalbed methane. On this basis, the region for development in next step and the key areas for development adjustment were pointed out. Definitely, it is more favorable to give priority to the single-layer development for No.8+9 coal layers in the western part of Unit 1 and in the central and western parts of Unit 2 in the block, as well as No.4+5 coal layers in the southern part of Unit 3. In view of the area with a large amount of undeveloped reserves in No.8+9 coal layers in the block, No.8+9 coal layers may be developed in priority by adjusting the development sequence of layers, with No.4+5 coal layers blocked temporarily. In general, the results of this research are of great significance for the guidance of efficient development of coalbed methane fields with multiple bed series.

Keywords

single/multi-layer development, geological condition, quantitative indicator, adjustment of development serie, Baode Block, eastern margin of Ordos Basin

DOI

10.12363/issn.1001-1986.21.12.0865

Recommended Citation

ZHANG Lei, XU Fengyin, LI Ziling, et al. (2022) "Analysis on influencing factors of single/multi-layer development of coalbed methane field: A case study of Baode Block," Coal Geology & Exploration: Vol. 50: Iss. 9, Article 9.
DOI: 10.12363/issn.1001-1986.21.12.0865
Available at: https://cge.researchcommons.org/journal/vol50/iss9/9

Reference

[1] 戴林. 煤层气井水力压裂设计研究[D]. 荆州：长江大学，2012.

DAI Lin. Study on hydraulic fracturing design of coalbed methane[D]. Jingzhou：Yangtze University，2012.

[2] 赵欣. 煤层气产能主控因素及开发动态特征研究[D]. 徐州：中国矿业大学，2017.

ZHAO Xin. The study of main influence factors on productivity of coalbed methane well and the development performance[D]. Xuzhou：China University of Mining and Technology，2017.

[3] WAFFLE C R，TISDALE D L，MACNEILLC A. The horseshoe canyon coals of central alberta ：A“dry”CBM play[C]. Eastern Section AAPG Annual Meeting. 2010.

[4] HOCH O. The dry coal anomaly：The horseshoe canyon formation of Alberta，Canada[C]. Texas：Society of Petroleum Engineers，2005.

[5] THAKUR P. Global reserves of coalbed methane and prominent coal basins[C]. Advanced Reservoir and Production Engineering for Coal Bed Methane，2017.

[6] RAMASWAMY S. Selection of best drilling, completion and stimulation method for coalbed methane reservoirs[D]. Texas：Texas A & M University，2009.

[7] 杜希瑶,李相方,徐兵祥,等. 韩城地区煤层气多层合采开发效果评价[J]. 煤田地质与勘探,2014,42(2):28−34

DU Xiyao,LI Xiangfang,XU Bingxiang,et al. Multi–layer production evaluation of coalbed methane wells in Hancheng area[J]. Coal Geology & Exploration,2014,42(2):28−34

[8] 杨建超,李贵红,刘钰辉,等. 晋城地区煤层气井多层合采效果评价[J]. 煤田地质与勘探,2019,47(6):26−31

YANG Jianchao,LI Guihong,LIU Yuhui,et al. Evaluation of coalbed methane drainage effect for multi−target seams in Jincheng region[J]. Coal Geology & Exploration,2019,47(6):26−31

[9] 刘世奇,方辉煌,桑树勋,等. 沁水盆地南部煤层气直井合层排采产气效果数值模拟[J]. 煤田地质与勘探,2022,50(6):20−31

LIU Shiqi,FANG Huihuang,SANG Shuxun,et al. Numerical simulation of gas production for multilayer drainage coalbed methane vertical wells in southern Qinshui Basin[J]. Coal Geology & Exploration,2022,50(6):20−31

[10] 张先敏,吴浩宇,冯其红,等. 多层合采煤层气井动态响应特征[J]. 中国石油大学学报(自然科学版),2020,44(6):88−96

ZHANG Xianmin,WU Haoyu,FENG Qihong,et al. Dynamic characteristics of commingled coalbed methane production in wells with multi−layer coal seams[J]. Journal of China University of Petroleum (Edition of Natural Science),2020,44(6):88−96

[11] 温声明,文桂华,李星涛,等. 地质工程一体化在保德煤层气田勘探开发中的实践与成效[J]. 中国石油勘探,2018,23(2):69−75

WEN Shengming,WEN Guihua,LI Xingtao,et al. Application and effect of geology−engineering integration in the exploration and development of Baode CBM field[J]. China Petroleum Exploration,2018,23(2):69−75

[12] 刘世奇,赵贤正,桑树勋,等. 煤层气井排采液面–套压协同管控:以沁水盆地樊庄区块为例[J]. 石油学报,2015,36(增刊1):97−108

LIU Shiqi,ZHAO Xianzheng,SANG Shuxun,et al. Cooperative control of working fluid level and casing pressure for coalbed methane production:A case study of Fanzhuang block in Qinshui Basin[J]. Acta Petrolei Sinica,2015,36(Sup.1):97−108

[13] LARSEN L. Wells producing commingled zones with unequal initial pressures and reservoir properties[C]. San Antonio：SPE Annual Technical Conference and Exhibition，1981.

[14] LEFKOVITS H C,HAZEBROEK P,ALLEN E E. A study of the behavior of bounded reservoirs composed of stratified layers[J]. Society of Petroleum Engineers Journal,1961,1(1):43−58.

[15] AHMED M A. A new technique for analysis of wellbore pressure from multi–layered reservoirs with unequal initial pressures to determine individual layer properties[C]. SPE Eastern Regional Meeting，1994.

[16] 郑得文. 煤层气资源储量评估方法与理论研究[D]. 杭州：浙江大学，2007.

ZHENG Dewen. The research on the methods and theories of estimation for coal gas resources and reserves[D]. Hangzhou：Zhejiang University，2007.

[17] 罗平亚. 关于大幅度提高我国煤层气井单井产量的探讨[J]. 天然气工业,2013,33(6):1−6

LUO Pingya. A discussion on how to significantly improve the single–well productivity of CBM gas wells in China[J]. Natural Gas Industry,2013,33(6):1−6

[18] 安世岗,吴联君,向军文. 山西保德中低阶煤层气地质特征[J]. 能源与环保,2018,40(3):60−65

AN Shigang,WU Lianjun,XIANG Junwen. Geological characteristics of middle and low rank coalbed methane in Baode County of Shanxi Province[J]. China Energy and Environmental Protection,2018,40(3):60−65

[19] 赵振宇,郭彦如,王艳,等. 鄂尔多斯盆地构造演化及古地理特征研究进展[J]. 特种油气藏,2012,19(5):15−20

ZHAO Zhenyu,GUO Yanru,WANG Yan,et al. Study progress in tectonic evolution and paleogeography of Ordos Basin[J]. Special Oil & Gas Reservoirs,2012,19(5):15−20

[20] 邓军,王庆飞,高帮飞,等. 鄂尔多斯盆地演化与多种能源矿产分布[J]. 现代地质,2005,19(4):538−545

DENG Jun,WANG Qingfei,GAO Bangfei,et al. Evolution of Ordos Basin and its distribution of various energy resources[J]. Geoscience,2005,19(4):538−545

[21] 赵建斌,杨玲,万金彬,等. 山西保德区块煤层气井含水性评价方法研究[J]. 测井技术,2014,38(5):611−616

ZHAO Jianbin,YANG Ling,WAN Jinbin,et al. Evaluation method of coalbed methane wells aquosity in Shanxi Baode area[J]. Well Logging Technology,2014,38(5):611−616

[22] 赵庆波,孔祥文,赵奇. 煤层气成藏条件及开采特征[J]. 石油与天然气地质,2012,33(4):552−560

ZHAO Qingbo,KONG Xiangwen,ZHAO Qi. Coalbed methane accumulation conditions and production characteristics[J]. Oil & Gas Geology,2012,33(4):552−560

[23] 李新凤,魏久传,隋岩刚. 煤层顶板砂岩含水层富水性单因素分析[J]. 山东煤炭科技,2012(5):128−130

LI Xinfeng,WEI Jiuchuan,SUI Yangang. Single factor analysis on sandstone aquifer’s water abundance in the coal seam’s roof[J]. Shandong Coal Science and Technology,2012(5):128−130

[24] 李勇,汤达祯,许浩,等. 鄂尔多斯盆地东缘煤层气构造控气特征[J]. 煤炭科学技术,2014,42(6):113−117

LI Yong,TANG Dazhen,XU Hao,et al. Characteristics of structural controlled coalbed methane in east margin of Ordos Basin[J]. Coal Science and Technology,2014,42(6):113−117

[25] 陶树,汤达祯,许浩,等. 沁南煤层气井产能影响因素分析及开发建议[J]. 煤炭学报,2011,36(2):194−198

TAO Shu,TANG Dazhen,XU Hao,et al. Analysis on influence factors of coalbed methane wells productivity and development proposals in southern Qinshui Basin[J]. Journal of China Coal Society,2011,36(2):194−198

[26] AMINIAN K，AMERI S. Predicting production performance of CBM reservoirs[J]. Journal of Natural Gas Science and Engineering，2009，1(1/2)：25–30.

[27] 黄华州,桑树勋,苗耀,等. 煤层气井合层排采控制方法[J]. 煤炭学报,2014,39(增刊2):422−431

HUANG Huazhou,SANG Shuxun,MIAO Yao,et al. Drainage control of single vertical well with multi–hydraulic fracturing layers for coalbed methane development[J]. Journal of China Coal Society,2014,39(Sup.2):422−431

[28] PALMER I. Permeability changes in coal: Analytical modeling[J]. International Journal of Coal Geology,2009,77(1/2):119−126.

[29] CLARKSON C R,BUSTIN R M,SEIDLE J P. Production–data analysis of single−phase (gas) coalbed−methane wells[J]. SPE Reservoir Evaluation and Engineering,2007,10(3):312−331.

[30] 马飞英. JL煤田煤层气井产能主控因素研究[D]. 成都：西南石油大学，2014.

MA Feiying. The study of main influence factors on productivity of coalbed methane well in JL coalfield[D]. Chengdu：Southwest Petroleum University，2014.

[31] 曾雯婷,陈树宏,徐凤银. 韩城区块煤层气排采控制因素及改进措施[J]. 中国石油勘探,2012,17(2):79−84

ZENG Wenting,CHEN Shuhong,XU Fengyin. Controlling factor analysis and suggestions on CBM drainage in Hancheng block[J]. China Petroleum Exploration,2012,17(2):79−84

[32] AYERS W B. Coalbed gas systems, resources, and production and a review of contrasting cases from the Sanjuan and Powder River Basins[J]. AAPG Bulletin,2002,86(11):1853−1890.

[33] 程伟,王平,陈磊,等. 延川南煤层气临界解吸压力误差分析[J]. 中国煤层气,2012,9(1):23−25

CHENG Wei,WANG Ping,CHEN Lei,et al. Analysis of errors obtained in calculation of CBM critical desorption pressure in Yanchuan south block[J]. China Coalbed Methane,2012,9(1):23−25

[34] 王芝银,段品佳,张华宾. 煤层气开采初期井底压力的合理控制范围研究[J]. 岩石力学与工程学报,2011,30(增刊2):3407−3412

WANG Zhiyin,DUAN Pinjia,ZHANG Huabin. Study of reasonable controlling range of bottom–hole pressure in initial stage for coalbed methane production[J]. Chinese Journal of Rock Mechanics and Engineering,2011,30(Sup.2):3407−3412

[35] 段品佳,王芝银,翟雨阳,等. 煤层气排采初期阶段合理降压速率的研究[J]. 煤炭学报,2011,36(10):1689−1692

DUAN Pinjia,WANG Zhiyin,ZHAI Yuyang,et al. Research on reasonable depressurization rate in initial stage of exploitation to coalbed methane[J]. Journal of China Coal Society,2011,36(10):1689−1692

[36] 娄剑青. 影响煤层气井产量的因素分析[J]. 天然气工业,2004,24(4):62−64

LOU Jianqing. Factors of influencing production of coalbed gas wells[J]. Natural Gas Industry,2004,24(4):62−64

[37] JERRALD L S，PAULS S S, RICHARD A S. A guide to coalbed methane reservoir engineering[M]. Chicago：Gas Research Institute，1996.

[38] 李士才. 煤层气井产能预测模型建立及数值模拟[D]. 秦皇岛：燕山大学，2016.

LI Shicai. The prediction model establishment and numerical simulation of CBM well productivity[D]. Qinhuangdao：Yanshan University，2016.

[39] SEIDLE J. Fundamentals of coalbed methane reservoir engineering[M]. Tulsa：Pennwell Corp Press，2011.

[40] GENTZIS T. Review of mannville coal geomechanical properties:Application to coalbed methane drilling in the Central Alberta Plains,Canada[J]. Energy Sources Part A–Recovery Utilization and Environmental Effects,2010,32(4):355−369.

[41] WONG S,MACDONALD D,ANDREI S. Conceptual economics of full scale enhanced coalbed methane production and CO₂ storage in anthracitic coals at south Qinshui Basin, Shanxi, China[J]. International Journal of Coal Geology,2010,82(3/4):280−286.

[42] HAMELINCK C,FAAIJ A P C,TURKENBURG W C,et al. CO₂ enhanced coalbed methane production in the Netherlands[J]. Energy,2002,27(7):647−674.

[43] PASHIN J C. Variable gas saturation in coalbed methane reservoirs of the Black Warrior basin:Implications for exploration and production[J]. International Journal of Coal Geology,2010,82(3/4):135−146.

[44] 邵先杰,董新秀,汤达祯,等. 煤层气开发过程中渗透率动态变化规律及对产能的影响[J]. 煤炭学报,2014,39(增刊1):146−151

SHAO Xianjie,DONG Xinxiu,TANG Dazhen,et al. Permeability dynamic change law and its effect on productivity during coalbed methane development[J]. Journal of China Coal Society,2014,39(Sup.1):146−151

[45] 郭晨,秦勇,卢玲玲. 黔西红梅井田煤层气有序开发的水文地质条件[J]. 地球科学进展,2015,30(4):456−464

GUO Chen,QIN Yong,LU Lingling. Hydrogeological conditions of orderly coalbed methane development in Hongmei well field,western Guizhou,south China[J]. Advances in Earth Science,2015,30(4):456−464

[46] 秦勇,汤达祯,刘大锰,等. 煤储层开发动态地质评价理论与技术进展[J]. 煤炭科学技术,2014,42(1):80−88

QIN Yong,TANG Dazhen,LIU Dameng,et al. Geological evaluation theory and technology progress of coal reservoir dynamics during coalbed methane drainage[J]. Coal Science and Technology,2014,42(1):80−88

[47] 赵欣,姜波,张尚锟,等. 鄂尔多斯盆地东缘三区块煤层气井产能主控因素及开发策略[J]. 石油学报,2017,38(11):1310−1319

ZHAO Xin,JIANG Bo,ZHANG Shangkun,et al. Main controlling factors of productivity and development strategy of CBM wells in Block 3 on the eastern margin of Ordos Basin[J]. Acta Petrolei Sinica,2017,38(11):1310−1319