...-derived permeability app pressure transient analysis zone 1 transmissibility quantity inflow equation zone 2 dst procedure layer 2 Introduction Numerous authors have investigated the behaviour of commingled reservoirs, and proposed methodologies for testing commingled systems. Lefkovits...

.... These were mainly used to help identify potential reservoirs, optimize DST intervals, and distinguish between high water saturation and residual pay zones. In addition, the formation tester tool was run to measure formation pressures, obtain fluid samples, and determine fluid types and contacts...

... or afterward, conversely P/Z method requires the well to be produced for quite some time to have pressure depletion. DST survey in most of cases is carried out with limited duration in order to minimize operational cost related to rig time. Therefore conducting another well testing after well completion...

... Abstract The coal seam gas (CSG) developments of the Surat Basin in Australia are a world-first in CSG-to-LNG.Methane is extracted from thinly-bedded, shallow Jurassic coals by de-watering the coal fracture network to promote desorption of gas from the coal matrix. Drill stem tests (DSTs...

... Abstract The field in study has multiple stacked reservoirs with 10-20m oil column overlain by medium to large gas caps. PVT analysis from DST in the gas zones were available, which showed gas and condensate production at surface. Composition, PSAT and CCE data were available from surface...

... stress conditions in coal seam reservoirs. Because of the similarities between the DFIT and STR procedures, we decided to apply the DFIT analysis technique to the SRT data with the aim to assess the coal seam permeability; furthermore, compare these permeability results with Drill Stem Test (DST...

... boundary spe 141774 synthetic composition eos region synthetic sample dst drillstem testing reservoir zone recombined sample production data zone fm2-c recombination zone fm2-d society of petroleum engineers Approach The work performed for this study can be divided into two parts...

... Abstract Drill Stem Testing (DST) is a primary means of evaluating skin and permeability of exploration and appraisal wells. It is no exception in the case of Coal Seam Gas (CSG) reservoirs. A modified form of DST is routinely used by the CSG industry in this region (Queensland, Australia...

... there is cross flow when the high permeability layer (and no other) has a high skin. Abstract Two Drill stem tests (DST) were conducted from a well X, in an offshore field that was in the exploration phase. A major objective of each test was to identify whether the seismic anomalies seen between well X...

... wireline formation testing was ruled out due to the experience of high sticking risks in this environment. Pertamina had earlier tested these reservoirs using drillstem tests (DST's). However, the DST's had been extremely expensive and time consuming, due to the many layers that needed testing, and were...