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• Formation fluid pressure from drill stem tests
  ...pressures recorded when the tool is opened up to the formation and fluids flow up the drillpipe. B is the initial flowing pressure; B′ is the final flow ...osed. The rapid expulsion of fluid from the reservoir during the preceding flow period causes reservoir pressure to drop near the wellbore. ISIP is the pre
  6 KB (997 words) - 17:55, 17 February 2022
• Economics: fundamental equations for oil and gas property evaluation
  ...ax profit or (loss), expressed as present value of the cumulative net cash flow stream ...alue of money]], the net cash flows are expressed as a ''discounted'' cash flow stream, so the entire venture can be comparedto current alternative financi
  6 KB (842 words) - 19:26, 19 January 2022
• Drilling problems
  Hole instability occurs when encountered formations flow, slough, or swell. The most unstable formations are [[shale]]s and [[Evapor ...he formation ([http://dictionary.reference.com/browse/plastic+flow plastic flow]). Abnormally high pore pressures can cause [[Wikipedia:Blowout (well drill
  5 KB (732 words) - 21:18, 19 January 2022
• Perforation design
  ...meability anisotropy is one of the main factors that affects the reservoir flow property. One common case of using guns with high density is due to the fac ...d charges. Moreover, skin damage (formation damage) can heavily affect the flow regime of the reservoir. There are multiple kinds of skin damage such as we
  12 KB (1,786 words) - 21:02, 21 April 2022
• Fault seal-conduit studies
  ...http://archives.datapages.com/data/bulletns/1998/03mar/0387/0387.htm Fluid flow in a faulted reservoir system: fault trap analysis for the Block 330 field ...lletns/1994-96/data/pg/0079/0005/0600/0642.htm Effect of faulting on fluid flow in porous sandstones: geometry and spatial distribution]: AAPG Bulletin, vo
  5 KB (638 words) - 14:17, 2 February 2022
• Pressure transient testing
  * Verification of flow barriers (such as faults) and estimates of distance to these barriers ===Single-rate flow tests===
  15 KB (2,314 words) - 17:45, 21 January 2022
• East Breaks hydrocarbon migration model
  ...nown [[gravity]]-flow sandstone reservoirs. The deepwater lowstand gravity-flow reservoir sandstones are separated by hemipelagic mudstones deposited durin ...rom Cretaceous and Tertiary strata in southern Louisiana for aqueous fluid flow from deep, [http://www.glossary.oilfield.slb.com/en/Terms/g/geopressure.asp
  10 KB (1,376 words) - 16:00, 23 March 2022
• Pore and pore throat sizes
  ...ze of a pore throat is the radius of a circle drawn perpendicular to fluid flow and fitting within its narrowest point. Absolute size of a pore is the radi ...on, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, ''in'' J. C. Dolson, M. L. Hendricks, and W. A
  4 KB (516 words) - 14:04, 4 April 2022
• Glossary
  ;AOF:absolute open flow ;CAOFP:calculated absolute open flow potential
  5 KB (840 words) - 13:51, 18 March 2019
• Coal bed methane (UDip)
  ...cleat system coupled through the desorption process. The mechanism for gas flow in the coal involves three steps: # Darcy flow through the fracture (cleat) network to the wellbore.
  10 KB (1,576 words) - 14:42, 2 April 2019
• Fluid flow fundamentals
  | chapter = Fundamentals of fluid flow ...focus essentially on two aspects of fluid flow: pressure profile along the flow path and the rate versus pressure relationship at key points of interest (n
  20 KB (3,155 words) - 21:20, 19 January 2022
• Displacement pressure: theory vs. reality
  * [[Saturations required for hydrocarbon flow]] * [[Hydrodynamic flow and pressure transients]]
  4 KB (587 words) - 13:36, 1 April 2022
• Dip-leaking fault
  ...zone. Pressure differences along and across faults can also cause down-dip flow in the area of lowest pressure.<ref name=ch10r43>Knutson, C. A., and R. Erg
  8 KB (1,130 words) - 17:14, 28 March 2022
• Relating traps to paleogeography
  ...and below normal wave base where sedimentation is dominated by [[gravity]]-flow processes. ...ated to their transport through slope channels and deposition as a gravity-flow deposit within the axis of a salt-withdrawal valley (see [[:file:sedimentar
  11 KB (1,482 words) - 15:47, 21 March 2022
• Factors that oppose hydrocarbon migration
  ...en requires significant pressure gradients to overcome the restrictions to flow common in shales. For water, the problem is generally not one of ability to ...differentials interacts with permeability and capillarity to determine the flow rates along multiple [[Hydrocarbon migration|migration]] pathways. Perfect
  8 KB (1,133 words) - 15:16, 14 February 2022
• Reservoir modeling for simulation purposes
  ...[[Fluid flow fundamentals]]). Reservoir heterogeneities influencing fluid flow range from large scale faults and discontinuities down to thin shale interc ...t give a sufficient description of those parameters that control the fluid flow relevant to the planned simulation study.<ref name=pt10r14>Harris, D. G., 1
  17 KB (2,234 words) - 21:21, 19 January 2022
• Factors that cause migration
  * Topographically driven flow ...er-pressuring the pore system within the source-rock unit and resulting in flow from the source-rock unit into the surrounding formations. This factor is o
  6 KB (918 words) - 15:16, 14 February 2022
• Wireline formation testers
  ...t 15 sec, followed by a similar volume flowing into chamber #2 at a higher flow rate. Upon completion of the pretests, a sample can be taken or the tool ca ...In this figure, time is shown as increasing to the right and pressure and flow rate are increasing upward. Initially, and when the tool is being set, the
  10 KB (1,446 words) - 17:42, 18 January 2022
• Economics: key parameters
  ...xample multiwell extension project, given in the article [[Building a cash flow model]], are summarized here in Tables 1 and 2, respectively. ...015,600 USD]]. For the extension project (see Table 3 of [[Building a cash flow model]]), the NPV at 4% = [[cost::2,729,760 USD]].
  19 KB (2,745 words) - 21:18, 19 January 2022
• Karst topography
  ...e valleys or grooves contained in karst land. This valley is formed by the flow of surface water that eroded the rocks in its path. ...ngeln 1942 an underground passageway formed by leaching and erosion by the flow of groundwater or underground Form the rest of dissolution
  13 KB (2,016 words) - 19:56, 5 April 2019

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