China's coalbed methane development: A review of the challenges and opportunities in subsurface and surface engineering

Published on Jul 1, 2018in Journal of Petroleum Science and Engineering3.706
· DOI :10.1016/J.PETROL.2018.03.047
Hangyu Li10
Estimated H-index: 10
(Royal Dutch Shell),
Hon Chung Lau13
Estimated H-index: 13
(NUS: National University of Singapore),
Shan Huang6
Estimated H-index: 6
(Royal Dutch Shell)
Sources
Abstract
Abstract Commercial development of coalbed methane (CBM) in China has lasted for a decade. However, in 2015 annual CBM production in China was less than 5 Bcm and lagged far behind those in US (35 Bcm) and Australia (18 Bcm). In this paper, we review the published literature to determine the engineering challenges and opportunities of CBM production in China. Our review has identified seven major engineering challenges to CBM development in China. They are low cleat permeability and underpressured formation pressure of high-rank coals, ductility of coal seams, suboptimal fracturing fluids, formation damage during drilling, borehole instability in horizontal wells, frequent pump failures during production, and inadequate produced water treatment methods. Each of these challenges provides an opportunity for improvement. We propose a refocus on low-rank coals which have higher permeability. Other opportunities include development of better hydraulic fracturing fluids, non-formation damaging drilling fluids, use of geomechanics to understand borehole instability, optimization of the artificial lift methods and more robust and environmentally friendly produced water treatment methods.
📖 Papers frequently viewed together
799 Citations
643 Citations
3 Authors (Hon Chung Lau, ..., Shan Huang)
92 Citations
References60
Newest
#1Hon Chung LauH-Index: 13
#2Hangyu LiH-Index: 10
Last. Shan HuangH-Index: 6
view all 3 authors...
Coalbed methane (CBM) resources in China have been estimated to exceed 36 Tcm. As of 2014, there were ∼9300 producing CBM wells in China with an annual production of ∼4.4 Bcm. To satisfy its need for energy and to transition to a low-carbon economy, China has a big need to accelerate CBM development. This paper gives an overview of the status of CBM development in China, identifies key technical challenges, and proposes solutions to overcome them. Our review of the literature has revealed that c...
92 CitationsSource
#1Brian F. Towler (UQ: University of Queensland)H-Index: 21
#2Mahshid Firouzi (UQ: University of Queensland)H-Index: 12
Last. Katherine Witt (UQ: University of Queensland)H-Index: 8
view all 9 authors...
Abstract The demand for natural gas in Queensland, Australia has historically been supplied from conventional reservoirs. However, depletion in conventional sources has led producers to turn to extensive supplies in Queensland's coal resources. These coal seam gas (CSG) developments not only represent new supplies for the domestic market in eastern Australia, they are also the first time that CSG (aka coal bed methane or CBM) has been liquefied to serve the expanding world LNG market. In order t...
102 CitationsSource
#1Feng Liang (Saudi Aramco)H-Index: 21
#2Mohammed Sayed (Saudi Aramco)H-Index: 13
Last. Leiming Li (Saudi Aramco)H-Index: 13
view all 5 authors...
Abstract The main function of traditional proppants is to provide and maintain conductive fractures during well production where proppants should meet closure stress requirement and show resistance to diagenesis under downhole conditions. Many different proppants have been developed in the oil & gas industry, with various types, sizes, shapes, and applications. While most proppants are simply made of silica or ceramics, advanced proppants like ultra-lightweight proppant is also desirable since i...
163 CitationsSource
#1K. A. Baublys (UQ: University of Queensland)H-Index: 16
#2S.K. Hamilton (UQ: University of Queensland)H-Index: 8
Last. Joan Esterle (UQ: University of Queensland)H-Index: 24
view all 5 authors...
Abstract The Walloon Subgroup coal seam gas (CSG) play in the Surat Basin, Queensland, is Australia's pre-eminent onshore gas field. Concerted multi-disciplinary research is underway investigating the distribution, origin and composition of waters and gases in this dominantly microbial CSG reservoir, to guide both continued production and potential microbially enhanced coal bed methane (MECoM) applications. However, prior to the present research, a detailed study of co-produced waters and gases ...
43 CitationsSource
#1Zheng Zhang (CUMT: China University of Mining and Technology)H-Index: 2
#2Yong Qin (CUMT: China University of Mining and Technology)H-Index: 21
Last. Chen Guo (CUMT: China University of Mining and Technology)H-Index: 1
view all 5 authors...
Multi-coalbed developed in Carboniferous-Permian coal-bearing strata of southern Qinshui Basin, and different coal-bearing segments have different coalbed methane (CBM) reservoiring characteristics. Analysis of previous studies suggests that the essence of an unattached CBM system is to possess a unified fluid pressure system, which includes four key elements, namely, gas-bearing coal-rock mass, formation fluid, independent hydrodynamic system and capping layer condition. Based on the exploratio...
20 CitationsSource
#1Qingzhong Zhu (PetroChina)H-Index: 2
#2Yinqing Zuo (PetroChina)H-Index: 1
Last. Yanhui Yang (PetroChina)H-Index: 2
view all 3 authors...
Abstract The low average single-well production, resulting in low economic benefit, has become the main bottleneck of CBM development in China. In view of this issue, through case study of a CBM gas reservoir in the southern Qinshui Basin, we summarized the present status of CBM technology and development there and also pointed out some major problems in CBM development: (1) the engineering technology for the CBM development needs to adapt to the particular geological characteristics; (2) a larg...
23 CitationsSource
#1Yang Yong (PetroChina)H-Index: 3
#2Cui Shuqing (PetroChina)H-Index: 2
Last. Shumin Lang (PetroChina)H-Index: 1
view all 6 authors...
Abstract A multi-lateral horizontal well is one of the main well types employed in the coal bed methane (CBM) development. In a traditional CBM multi-lateral horizontal well, either a major hole or laterals will go crossing through coal beds to the largest extent, which may eventually result in bed collapse, footage failing to meet the design requirement, and the major hole unable to be monitored, re-entered and flushed. Therefore, this paper puts forward a design idea of a tree-like horizontal ...
11 CitationsSource
#1Yidong Cai (China University of Geosciences)H-Index: 27
#2Dameng Liu (China University of Geosciences)H-Index: 37
Last. Dazhen Tang (China University of Geosciences)H-Index: 41
view all 6 authors...
Abstract Gas contents are highly variable in coalbed methane (CBM) reservoirs of the Yanchuannan (YCN) area of the southeast (SE) Ordos Basin, China. We used diverse geologic data derived from more than five years of exploration to provide insight into the origin of this variability and the consequences of gas content on reservoir performance. Major factors affecting gas content variability include gas generation, migration, trapping and preservation. Gas generation affects gas content variabili...
32 CitationsSource
#1Huihu Liu (Anhui University of Science and Technology)H-Index: 8
#2Shuxun Sang (CUMT: China University of Mining and Technology)H-Index: 20
Last. Yan Xie (Anhui University of Science and Technology)H-Index: 1
view all 10 authors...
This study performs a block scale investigation on gas content of a coal reservoir in Zhengzhuang Block of the southern Qinshui basin in China. The gas content of Coal Seam No. 3 in this coal reservoir was measured in field and laboratory in conjunction with tests on coal properties such as adsorption isotherm, maximum vitrinite reflectance, coal composition and maceral component etc. Total 36 coal cores collected from 3 adjacent coalmines in the southern Qinshui basin were investigated, includi...
48 CitationsSource
#1YE Jian-pin (China University of Petroleum)H-Index: 1
According to high difficult development caused by high geostress and low permeability features of the coalbed methane in deep seam,the paper analyzed the rock core test data of the coalbed methane well in the south part of Qinshui Basin and the logging,well test,fracturing,production and other actual informations of the coalbed methane well and studied the relationship between the physical property parameters of main reservoir and depth. The study results showed that the variation law of differe...
6 Citations
Cited By48
Newest
#1Yiyu Lu (Chongqing University)H-Index: 21
#2Hanbo Zhang (Chongqing University)H-Index: 1
Last. M. L. Ye (Chongqing University)H-Index: 1
view all 7 authors...
2 CitationsSource
Source
#1Hon Chung LauH-Index: 13
#2Seeram RamakrishnaH-Index: 162
Last. A.V. Radhamani (NUS: National University of Singapore)H-Index: 5
view all 4 authors...
In this paper, we review and analyze the salient features of the ongoing energy transition from a high to a low carbon economy. Our analysis shows that this transition will require decarbonizing th...
4 CitationsSource
#1Sheng Xue (Anhui University of Science and Technology)H-Index: 3
#2Qiming Huang (Anhui University of Science and Technology)
Last. Jun Li (SDUST: Shandong University of Science and Technology)H-Index: 1
view all 5 authors...
Abstract To investigate the interaction between coal and fracturing fluid and its influence on the pore structures of the coal, three commonly used water-based fracturing fluids were selected and used to treat Illinois coal. A series of low-temperature nitrogen ad-/desorption experiments and nuclear magnetic resonance measurements were conducted to comparatively analyse the evolution of the coal pore structure after treatment. The results show that the intrusion of the water-based fracturing flu...
2 CitationsSource
#1Shuya Chen (China University of Geosciences)H-Index: 4
#2Kunzhi Xie (China University of Geosciences)H-Index: 2
Last. Jihua Cai (China University of Geosciences)H-Index: 6
view all 6 authors...
Abstract The low permeability of coalbed methane (CBM) reservoirs can be attributed to cementing minerals, which make it difficult for water/gas to flow in the pores and fractures. Acid stimulation is considered a promising method to enhance coal permeability by dissolving these inorganic minerals. Laboratory experiments were carried out to investigate the interactions between acids and coal samples from the Qinshui Basin. XRD and SEM-EDS analyses showed that these coal samples contained a large...
1 CitationsSource
#1Qiang Wei (Soochow University (Suzhou))H-Index: 2
#2Kaige Zheng (Gas Technology Institute)
Last. Wenqing Feng (Soochow University (Suzhou))
view all 8 authors...
Pore structure characterization of deep-buried coals and its implications on methane adsorption capacity are of great significance for further understanding the adsorption mechanism of methane mole...
Source
#1Dong Xiao (CUMT: China University of Mining and Technology)H-Index: 1
#2Mohamed Keita (CUMT: China University of Mining and Technology)
Last. Jing Ma (CUMT: China University of Mining and Technology)
view all 7 authors...
To study the regularity of anaerobic fermentation in coal during coal crack development, a series of tests and analyses was carried out. Test objects included dynamic air percolation with crack evolution, influence of changes in specific surface area, and rate of O2 percolation on anaerobic fermentation. The key factors affecting anaerobic fermentation at different zones of coal seam during crack development were analyzed. Data confirmed that the level of crack development in coal is positively ...
Source
#2Gaofeng Liu (UOW: University of Wollongong)H-Index: 1
Last. Zhou ZhangH-Index: 1
view all 8 authors...
To examine the permeability enhancement effect of the carbon disulfide (CS2) extraction on block coal samples, in this study, different cylindrical samples of anthracite coal were selected to conduct CS2 extraction experiments. Comprehensive measurement techniques, including Fourier transform infrared spectroscopy, X-ray diffraction, low-temperature nitrogen adsorption, industrial computed tomography, and permeability measurements, were employed to analyze the variations of in the chemical struc...
Source
#1Qiang WeiH-Index: 2
#2Baolin Hu (Anhui University of Science and Technology)H-Index: 1
Last. Huihu LiuH-Index: 8
view all 7 authors...
Abstract The objective of this study is to reveal the implications of geological conditions on gas content and geochemistry of deep coalbed methane (CBM) reservoirs. It is of great practical significances to improve the theory and technology for deep CBM development. In this work, the gas content and geochemistry of selected samples were obtained by canister desorption method, gas chromatography (GC) and GC–Mass Spectrometry (GC–MS). On the basis of geological conditions, the Panji Deep Area was...
3 CitationsSource
#1Yixin Zhao (CUMT: China University of Mining and Technology)H-Index: 65
#2Tong Liu (CUMT: China University of Mining and Technology)H-Index: 8
Last. Shimin Liu (PSU: Pennsylvania State University)H-Index: 33
view all 6 authors...
Abstract Small angle X-ray scattering (SAXS) has been widely employed to characterize the pore structure of coal and other geomaterials. However, in the many previous experimental investigations by SAXS, the probed samples were not standardized in terms of shape and particle size, even for the same geomaterial. The influence of pulverization on the pore structure of coal is generally ignored by the researchers using SAXS for structure characterization. In this study, SAXS is used to investigate ...
1 CitationsSource