Nov 15, 2015· The Luan coal mining area, located in the southeastern Qinshui Basin of Shanxi Province, China (), contains a CBM play with development potential.The mining area covers an area of 3464 km 2 and methane resources are estimated to be 334.7 billion m 3.The Qinshui Basin is a large complex syncline with a regional axis striking northeast–southwest, and the Luan mining area is …

Based on 54 sets of well test data of 29 coalbed methane (CBM) wells, the distribution characteristic of in situ stress in the eastern part of the southern Junggar Basin and its c

The injection and deep monitoring program will combine the production-buildup and injection-falloff testing techniques employed by the Alberta Research Council in western Canada [8] with the interference testing techniques employed at the Gas Research Institute's Rock Creek coalbed methane completion test site in the Black Warrior basin [9].

Through introducing application of the injection / fall off well test method in coal-bed methane well,the rationality of well test interpretation process is analyzed and discussed. the accuracy of its interpretation results has been discussed and attentions on application are offered,and its test result of the in-site stress is taken over briefly.

Sensitivity analysis in permeability estimation using logging and injection-falloff test data for an_/__ 85|5. Sensitivity analysis in permeability estimation using logging and injection-falloff test data for an_/__。

Sep 01, 2014· This paper presents a sensitivity analysis in permeability estimation by interpreting injection-falloff test and logging data for a producing coalbed methane field in Southeast Qinshui Basin. Injection-falloff test data are interpreted by an infinitely acting, constant compressibility and radial homogeneous model.

The measurement and analysis of pressure data taken after an injection well is shut in. These data are often the easiest transient well-test data to obtain. Wellhead pressure rises during injection, and if the well remains full of liquid after shut-in of an injector, the pressure can be measured at the surface, and bottomhole pressures can be calculated by adding the pressure from the ...

First, injection/falloff tests do not require reservoir flow; therefore, they can be run in underpressured as well as normal and overpressured reservoirs. It usually is easier to measure injection rates in an injection/falloff test than it is to estimate flow rates in a drillstem test …

Aug 19, 2014· Current status and technical challenges of CO 2 storage in coal seams and enhanced coalbed methane recovery: an overview. ... including an initial water-injection falloff test, ... CO 2 storage in coal seams and enhanced coalbed methane recovery ...

AQSIO, SAC (2009) GB/T 24504–2009 The method of injection/falloff well test for coalbed methane well. Beijing: Standards Press of China, 1–8 (in Chinese with an English abstract) Google Scholar Bell JS (2006) In-situ stress and coal bed methane potential in Western Canada.

Download Citation on ResearchGate | Applied analysis of injection/falloff well test in the coal-bed methane well | Through introducing application of the injection/fall off well test method in ...

Sep 01, 2014· Read "Sensitivity analysis in permeability estimation using logging and injection-falloff test data for an anthracite coalbed methane reservoir in Southeast Qinshui Basin, China, International Journal of Coal Geology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Coal Bed Methane Scan (PDF Format) - Angelfire Coalbed Methane resource appraisal, drilling and production testing are presently underway in at .... Absolute permeability of coal natural fracture systems can be estimated from well tests ... performed for less cost than an injection/falloff test.

On location for the first-ever - in ExxonMobil history - Injection-Falloff Tests in a Coal-Bed Methane (Coal-Seam Gas) play in Germany. Collaboration with the reservoir engineer in the interpretation of the downhole data on-site allowed for modifications to the program to ensure that objectives were met.

As part of the effort to interpret Amoco's enhanced coalbed methane recovery pilot, each of the four nitrogen injectors was tested with a pressure falloff test (PFOT) after approximately five months of injection. An additional test was done on the final injector at the termination of the pilot.

Combining Pressure Falloff and Buildup Testing Using Wireline Formation Tester in Coal Bed Methane Environment. ..., either an injection test or production test was applied to coal bed seams. In this paper we present a new approach that combines injection and buildup testing.

evaluation of Coal Bed Methane production potential of deeper seams in the Illawarra Coal Measures and identification of zones of variable gas drainability and outburst potential. ... Injection Falloff, Drill Stem Test (DST) and Step Rate. To limit the standby time of the drill rig, only injection ... Equipment used for down-hole coal seam ...

impact crusher specifi ion. function and specifi ion impact crusher function and specifi ion impact crusher. impact crusher is a kind of the use of to plate hammer function area specific impact crusher function of line ; injection falloff test equipment coal bed methane.

Evaluation of Coalbed Methane Reservoirs By: K. Aminian Petroleum & Natural Gas Engineering Department West ia University Introduction The key parameters for the evaluation of coalbed methane (CBM) prospects are the gas resources, reserves and deliverability. ... If an injection/falloff test is conducted by injecting water, the pressure ...

SPE Members . Abstract. This paper presents the results of a study undertaken to investigate the reasons why data from injection/falloff tests of coalbed methane wells were not interpretable using conventional well test analysis techniques and the results of a field study to investigate completion effectiveness during injection tests.

2 into a mature coalbed methane well and a series of buildup and falloff tests that will be monitored in the injection well and a series of remote observation wells. Before the injection test, one shallow water observation well and three deep observation wells will be drilled (Figures 4 and 5), and the injection well's mechanical integrity ...

During the coalbed methane (CBM) exploration and development, in-situ stress and permeability are two vital reservoir evaluation parameters. In this work, with the injection/falloff well test and ...

and increasingly utilise coal bed methane and other unconventional sources as alternative sources of energy. Proven oil reserves for the world in 2013 were 1,600billion [1] compared to resource estimates for Coal Bed Methane CBM that range up to 1,400 billion barrels equivalent oil [2].

A Study on the Well Test Analysis of Coalbed Methane Using the BFP-IFT ... D.P. and Lee, W.J., 1990, "Design and Interpretation of Injection/Falloff Tests for Coalbed Methane Wells," The 65th Annual Technical Conference and Exhibition, Society of Petroleum Engineers, New Orleans, Louisiana, USA, Sep 23-26, pp. 427-428, SPE 20569.

A Diagnostic Fracture Injection Test (DFIT™), also colloquially and sometimes inaccurately called Pre-Frac, Injection Falloff, Data-Frac or minifrac, is a pressure transient test used to obtain ...

This standard applies to test the coalbed methane wells during drilling or completion conducted. Aimed at obtaining coal permeability, reservoir pressure, skin factor, probe radius, situ stress and other parameters. GB/T 245042009 The method of injection/falloff well test for coalbed methane …

The type curve analysis of the falloff data for this example test is shown in Fig. 13, Note that only the late-time data match the type curve solution, We believe that the Based on our analyses of many coalbed methane well tests from wells in the Warrior Basin and the results of well tests presented in the literature,14 we believe that ...

First, injection/falloff tests do not require reservoir flow; therefore, they can be run in underpressured as well as normal and overpressured reservoirs. It usually is easier to measure injection rates in an injection/falloff test than it is to estimate flow rates in a drillstem test …

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