... assumption directional drilling bottom hole pressure wellbore annulus pressure annular pressure drilling drillstem/well testing permeability drillstem testing information influx rate drilling operation kpa drilling bha reservoir pressure mathematical model horizontal well productivity...

..., including gaswell testing, workover and completions, surface casing vent tests, and nitrogen cushion drill stem tests. Introduction Closed chamber testing techniques for drillstem tests were first developed and described 1–4 in the early seventies and eighties. These same techniques were extended...

... rate was increased from test 1 to test 3. The injection rates of three tests are presented in Figure 1. The bottom hole pressures monitored during the well testing are shown in Figure 3. injection rate drillstem testing oil sand reservoir reservoir geomechanics pressure response void ratio...

... drillstem testing dynamometer data pump fillage ABSTRACT A procedure is described that allows an operator to identify artificial lift wells which are operating inefficiently. A logical sequence of steps is presented for acquiring performance data such as casing annulus fluid level, casing pressure...

... characterization mpa waterflooding water management hydraulic fracturing effective stress radial distance flow in porous media permeability base case injection injection pressure drillstem testing total stress change displacement wellbore stress change drillstem/well testing vertical total stress...

..., i.e. infinite reservoir, second case is box-shape bounded, i.e. rectangular reservoir, its length is "a" and width is "b". flow regime drillstem/well testing wellbore storage coefficient algorithm dimensionless pressure drop horizontal well upstream oil & gas drillstem testing...

.... case fracture permeability fracture permeability upstream oil & gas buildup ten-layer model permeability wellbore storage crossflow partial penetration effect saturation drawdown flow period reservoir shutin fractured reservoir drillstem testing conclusion fracture geometric mean...

.... For convenience, we use results in dimensionless form. Dimensionless pressure and dimensionless time are defined as: upstream oil & gas infinite pressure distribution pressure response acting drillstem/well testing double porosity reservoir test-analysis problem drillstem testing point source...

... permeability reservoirs taking into account fracture turbulence. modeling & simulation permeability flow in porous media hydraulic fracturing wellbore drillstem testing upstream oil & gas non-darcy flow fracture half length permeability gas well guppy fractured well drillstem/well...

... underbalanced drilling liquid flow rate separator return gas production monitoring nitrogen injection header point tester secondary separator separation and treating dew point injection rate gas stream operation reservoir surveillance drillstem testing THE PETROLEUM SOCIETY PAPER 98-57 Gas...

...), pressure derivative of analysis curve shows up in the late period and forms assumption phenomenon with sealing boundary. numerical laplace transformation superposition time reservoir variable rate superposition time analysis society of petroleum engineers drillstem testing buildup period...

... decline analysis hydraulic fracturing upstream oil & gas performance evaluation exhibition platform fracture simulation drillstem/well testing fracture length treatment simulation society of petroleum engineers drillstem testing pressure transient testing well performance...

... annual technical meeting unit cross-sectional area linear flow constant rate rodriguez constant bottom-hole pressure production rate once pseudo-steady-state one-dimensional linear flow system investigation drillstem testing differential equation one-dimensional linear flow reservoir...

... condensate reservoir gas condensate reservoir drillstem testing drillstem/well testing RESERVOIR EVALUATION OF A GAS CONDENSATE RESERVOIR USING PRESSURE TRANSIENT ANALYSIS A.M.ALY W.D.MCCAIN N.C.HILL W.J.LEE this article begins on the next page F THE PETROLEUM SOCIETY PAPER 97-54 Reservoir Evaluation...

... offshore completion offshore gas subsea system drillstem/well testing situ abandonment mcbeth tri ocean engineering ltd valve subsea tree ice platform control system canada wellhead drillstem testing 1997. Petroleum Society of Canada ...

... reservoir fractured reservoir wellbore matrix transition period drillstem testing conventional crossplot reservoir equation fracture 1997. Petroleum Society of Canada ...

... these effects are observed in most practical well test data. The constant-rate intermediate region recovery process upstream oil & gas storativity power law fluid property exponent mobility drillstem/well testing interface intermediate region decrease drillstem testing composite reservoir...

... wellhead pressure subsurface pressure drillstem testing usefulness 76 EXAMPLES OF THE USEFULNESS AND BENEFITS OF SURFACE PRESSURE DATA FOR WELL TESTING APPLICATIONS R.HAWKES D.LEECH this article begins on the next page F THE PETROLEUM SOCIETY PAPER 97-35 76 Examples of the Usefulness and Benefits...

... horizontal well flow period flow rate drillstem/well testing drillstem testing dst flow period china national star petroleum company slug flow dimensionless bottomhole pressure characteristic constant flow rate pressure analysis ofdst flow period duhamel upstream oil & gas...

... can be calculated, once a match has been obtained. Traditional Type Curve analysis has 2 major drawbacks: match point modern type curve analysis involve drillstem testing reservoir surveillance upstream oil & gas wellbore introduction storage derivative analysis wellbore storage...