Use of Well Test Results in Oilfield Development Planning in the Timor Sea

1988 ◽  
Vol 40 (10) ◽  
pp. 1372-1382
Author(s):  
K.A. Edwards ◽  
P. Behrenbruch
2013 ◽  
Vol 53 (1) ◽  
pp. 227
Author(s):  
Czek Hoong Tan ◽  
Guncel Demircan ◽  
Mathias Satyagraha

Permeability of the cleat system is a key factor controlling the productivity of CSG reservoirs and, therefore, the commerciality of development projects. Well testing is routinely used to provide representative values of coal permeability. The authors’ experience has shown pressure transient behaviour in coal reservoirs to be similar to those in primary porosity systems, with pseudo radial flow frequently observed, and the dual-porosity signature largely absent. Despite the authors’ best efforts in test design, large permeability variation and extremely high skin factors have been seen. The authors have run variations of drill stem tests (DSTs), injection tests, and wireline tests to understand the dependency of results to test methods, and the validity of results obtained. Pertinent examples of each type of test are discussed. Finally, recommendations to reconcile well test results to actual well performance are presented.


2019 ◽  
Vol 7 (3) ◽  
pp. 58 ◽  
Author(s):  
Jiong Li ◽  
Mingguang Li ◽  
Lulu Zhang ◽  
Hui Chen ◽  
Xiaohe Xia ◽  
...  

The coastal micro-confined aquifer (MCA) in Shanghai is characterized by shallow burial depth, high artesian head, and discontinuous distribution. It has a significant influence on underground space development, especially where the MCA is directly connected with deep confined aquifers. In this paper, a series of pumping well tests were conducted in the MCA located in such area to investigate the dewatering-induced groundwater fluctuations and stratum deformation. In addition, a numerical method is proposed for the estimation of hydraulic parameter, and an empirical prediction method is developed for dewatering-induced ground settlement. Test results show that groundwater drawdowns and soil settlement can be observed not only in MCA but also in the aquifers underneath it. This indicates that there is a close hydraulic connection among each aquifer. Moreover, the distributions and development of soil settlement at various depths are parallel to those of groundwater drawdowns in most areas of the test site except the vicinity of pumping wells, where collapse-induced subsidence due to high-speed flow may occur. Furthermore, the largest deformation usually occurs at the top of the pumping aquifer instead of the ground surface, because the top layer is expanded due to the stress arch formed in it. Finally, the proposed methods are validated to be feasible according to the pumping well test results and can be employed to investigate the responses of groundwater fluctuations and stratum deformations due to dewatering in MCA.


1991 ◽  
Author(s):  
L.A. Rogers ◽  
P.L. Randolph ◽  
C.G. Hayden ◽  
B.A. Eaton ◽  
T.E. Meahl
Keyword(s):  

2006 ◽  
Vol 71 (6) ◽  
pp. 564-573
Author(s):  
Ooi Kiam Chai ◽  
Takeshi Kano ◽  
Jotaro Tomoeda

2020 ◽  
Vol 15 (4) ◽  
Author(s):  
E.S. Surikova ◽  
◽  
V.A. Kontorovich ◽  
M.O. Fedorovich ◽  
◽  
...  

Based on the analysis of seismic attributes, the shape of the SP curves, lithological and petrophysical data, and well test results, the sedimentation environments of the Bajocian, Berriasian-Hauterivian, Aptian and Cenomanian sandstone beds of the Geophysical field were reconstructed; its facies and zones of sandstone beds distribution and its claying are determined.


Sign in / Sign up

Export Citation Format

Share Document