Multi-branched horizontal wells for coalbed methane production: Field performance and well structure analysis

Ren, Jianhua; Zhang, Liang; Ren, Shaoran; Jiang, Lin; Meng, Shangzhi; Ren, Guangjun; Gentzis, Thomas

doi:10.1016/j.coal.2014.06.003

Cited by 59 publications

(39 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These conclusions are actually in agreement with the results of other authors although they optimized their models for cumulative production [1,5,7,8].…”

Section: Discussionsupporting

confidence: 83%

“…During the optimization we considered minimizing drawdown instead of maximizing flow rates. Our findings regarding optimum configurations are in accordance with those who considered flow-rate maximization which supports our hypoth-esis that multi-lateral well patterns can be optimized by minimizing drawdown [1,5,7,8].…”

Section: Introductionsupporting

confidence: 81%

“…26; Email: mlux@mol.hu János Szanyi, Tivadar M. Tóth: University of Szeged, H-6722, Szeged, Egyetem u. [2][3][4][5][6] necessarily in the same plane [1]. This suggests that the variations of multi-lateral well patterns are only limited by technology and imagination.…”

Section: Introductionmentioning

confidence: 90%

“…Authors dealing with multi-lateral well optimization aimed at maximizing cumulative production or well productivity [1,5,7,8]. In this paper we aim at the minimization of drawdown near the wellbore at unchanged flow rates.…”

Section: Methodsmentioning

confidence: 99%

“…With the continuous advancement in technology more and more sophisticated well patterns and geometries are possible to be implemented in practice [2]. Multi-lateral wells can also offer an alternative to hydraulic fracturing in certain areas of unconventional hydrocarbon production such as production from coal-beds and ductile shale layers where due to the ductile behaviour of rocks artificial fractures will close around the proppant and so well productivity will be reduced [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Evaluation and optimization of multi-lateral wells using MODFLOW unstructured grids

2016

View full text Add to dashboard Cite

Multi-lateral wells have been increasingly used in recent years by different industries including oil-and gas industry along with coal bed methane-and water production. The common purpose of these wells is to achieve a higher production rate per well. More and more sophisticated well patterns and geometries can be implemented in practice which calls for improved modelling techniques. Complicated well geometries and small lateral diameters require high resolution models in the vicinity of the wells. With structured finite difference grids this can only be achieved by unnecessary refinements even far away from the wellbores. However the model may still suffer from orientation problems if laterals do not coincide with the rows or columns of the rectangular mesh. In the present work, we applied unstructured grids to model multi-lateral wells and compared the results to structured models. We used the MODFLOW-USG code, which simulates groundwater flow using a generalized control volume finite-difference approach, allowing grids other than orthogonal structured grids to be applied. This offers a solution for orientation and resolution problems. The second part of the paper aims to optimize multi-lateral well geometry by evaluating the effect of length, angle and number of laterals.

show abstract

“…These conclusions are actually in agreement with the results of other authors although they optimized their models for cumulative production [1,5,7,8].…”

Section: Discussionsupporting

confidence: 83%

Section: Introductionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluation and optimization of multi-lateral wells using MODFLOW unstructured grids

2016

View full text Add to dashboard Cite

show abstract

An integrated numerical visualization teaching approach for an undergraduate course, Flow in Porous Media: An attempt toward sustainable engineering education

Okere

et al. 2021

Comp Applic In Engineering

View full text Add to dashboard Cite

The complexities of observing flow phenomena in porous media have made it difficult to teach the course, Flow in Porous Media, to undergraduate students majoring in petroleum engineering. In this study, we propose an integrated numerical visualization teaching (INVT) approach that is based on MATLAB Pdetool, graphical user interface, and Visual Basic Programming. The effectiveness of the INVT method was evaluated in two ways: First, via statistical analyses of the examination grades of two groups (experimental and control groups) of selected undergraduate students from the school of petroleum engineering, after a carefully designed INVT tutorial program was conducted on the experimental group, and

show abstract

A new pattern of underground space‐time tridimensional gas drainage: A case study in Yuwu coal mine, China

Nie

et al. 2019

Energy Science & Engineering

View full text Add to dashboard Cite

With the increase of mining depth, the high gassy coal mine confronts with a variety of gas problems, such as gas concentration exceeding the limit in the working face, gas outburst and gas explosion. According to the situation of gas drainage in Qinshui Basin (South of Shanxi Province, China) and enlightened by horizontal directional drillings (HDD) and multi‐branched horizontal wells, a new gas drainage pattern that inverted π‐shape km borehole layout was proposed. Verified in Yuwu Coal Mine, the gas drainage data were standardized via the unified theory of standardization. It could dropped the coal seam gas content to 7.71 m3/t, and increased the gas drainage rate to 34.2%, which conformed to the Chinese regulation (<8 m3/t, >30%, respectively). This pattern has a significant effect on coal mines with a single seam, where protective seam mining technology was unsuitable to prevent gas outburst and gas explosion.

show abstract

Multi-branched horizontal wells for coalbed methane production: Field performance and well structure analysis

Cited by 59 publications

References 24 publications

Evaluation and optimization of multi-lateral wells using MODFLOW unstructured grids

Evaluation and optimization of multi-lateral wells using MODFLOW unstructured grids

An integrated numerical visualization teaching approach for an undergraduate course, Flow in Porous Media: An attempt toward sustainable engineering education

A new pattern of underground space‐time tridimensional gas drainage: A case study in Yuwu coal mine, China

Contact Info

Product

Resources

About