Layer | Fill | Outline |
---|
Map layers
Theme | Visible | Selectable | Appearance | Zoom Range (now: 0) |
---|
Fill | Stroke |
---|---|
Collaborating Authors
Search Petrowiki: Water drive reservoirs
...Compaction drive reservoirs If pore volume contraction contributes prominently to overall expansion while the reservoir is sa...turated, then the reservoir is classified as a compaction drive. Compaction ...drive oil ...
If pore volume contraction contributes prominently to overall expansion while the reservoir is saturated, then the reservoir is classified as a compaction drive. Compaction drive oil reservoirs are supplemented bysolution gas drive if the reservoir falls below the bubblepoint; they may or may not be supplemented by awater or gas cap drive. Compaction drives characteristically exhibit elevated rock compressibilities, often 10 to 50 times greater than normal. Rock compressibility is called pore volume (PV), or pore, compressibility and is expressed in units of PV change per unit PV per unit pressure change. Rock compressibility is a function of pressure.
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Tor Formation (0.99)
- Europe > Norway > North Sea > Central North Sea > Central Graben > PL 018 > Block 2/4 > Greater Ekofisk Field > Ekofisk Field > Ekofisk Formation (0.99)
- Information Technology > Knowledge Management (0.41)
- Information Technology > Communications > Collaboration (0.41)
...Gas cap drive reservoirs In some instances, oil ...reservoirs are discovered with a segregated gas zone overlying an oil column. The overlying gas zone is referr...ed to as a primary gas cap. In addition to free gas, gas caps usually containconnate water and residual oil. The underlying oil column is sometimes referred to as an oil leg. In other instan...
For the effects of gravity segregation to be important, however, the well spacing may need to be prohibitively large or the producing rate may need to be prohibitively low. In such reservoirs, the vertical permeability is not high enough to permit much gravity segregation. The likely role of gravity segregation can be measured in terms of a gravity number,Ng. Ng is defined as the ratio of the time it takes a fluid to move from the drainage radius to the wellbore to the time it takes a fluid to move from the bottom of the reservoir to the top.
- North America > United States > Wyoming > Elk Basin > Elk Basin Field (0.99)
- North America > United States > Texas > Permian Basin > Yeso Formation (0.99)
- North America > United States > Texas > Permian Basin > Yates Formation (0.99)
- (24 more...)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
...Waterdrive reservoirs PetroWiki (Redirected from ...Water drive reservoirs) Waterdrive (or ...water drive) petroleum ...
Waterdrive (or water drive) petroleum reservoirs are characteristically bounded by and in communication with aquifers. As pressure decreases during pressure depletion, the compressed waters within the aquifers expand and overflow into the petroleum reservoir. The invading water helps drive the oil to the producing wells, leading to improved oil recoveries. Like gas reinjection andgas cap expansion, water influx also acts to mitigate the pressure decline. The degree to which water influx improves oil recovery depends on the size of the adjoining aquifer, the degree of communication between the aquifer and petroleum reservoir, and ultimately the amount of water that encroaches into the reservoir.
- Information Technology > Knowledge Management (0.41)
- Information Technology > Communications > Collaboration (0.41)
...Waterdrive reservoirs Waterdrive (or ...water drive) petroleum ...reservoirs are characteristically bounded by and in communication with aquifers. As pressure decreases during ...
Waterdrive (or water drive) petroleum reservoirs are characteristically bounded by and in communication with aquifers. As pressure decreases during pressure depletion, the compressed waters within the aquifers expand and overflow into the petroleum reservoir. The invading water helps drive the oil to the producing wells, leading to improved oil recoveries. Like gas reinjection andgas cap expansion, water influx also acts to mitigate the pressure decline. The degree to which water influx improves oil recovery depends on the size of the adjoining aquifer, the degree of communication between the aquifer and petroleum reservoir, and ultimately the amount of water that encroaches into the reservoir.
- Information Technology > Knowledge Management (0.41)
- Information Technology > Communications > Collaboration (0.41)
...Primary drive mechanisms Muskat defines primary recovery as the production period "beginning with the initial f... pressure. This article provides an overview of types of reservoir energy and producing mechanisms (drive mechanisms). Contents * 1 Defining primary recovery * 2 Types of reservoir energy * 3 Producin...is ultimately to improve oil recovery. The most common injected fluids for pressure maintenance are water and separator or residue gas. "Partial" and "complete" pressure maintenance describe the general ef...
Muskat defines primary recovery as the production period "beginning with the initial field discovery and continuing until the original energy sources for oil expulsion are no longer alone able to sustain profitable producing rates."[1] Primary recovery is also sometimes referred to as pressure depletion because it necessarily involves the decline of the reservoir pressure. This article provides an overview of types of reservoir energy and producing mechanisms (drive mechanisms). Primary recovery should be distinguished clearly from secondary recovery. Muskat defines secondary recovery as "the injection of (fluids) after the reservoir has reached a state of substantially complete depletion of its initial content of energy available for (fluid) expulsion or where the production rates have approached the limits of profitable operation."[1]
- Reservoir Description and Dynamics > Reservoir Characterization (1.00)
- Reservoir Description and Dynamics > Improved and Enhanced Recovery (1.00)
- Production and Well Operations > Well & Reservoir Surveillance and Monitoring (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Drillstem/well testing (0.93)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
...Material balance in waterdrive reservoirs PetroWiki (Redirected from Material balance in ...water drive reservoirs) The objectives of a material-balance analysis include: * Confirming the producing mechanism * E...stimating the original oil in place (OOIP) * Estimating the water influx history * Estimating the ...
- North America > United States > Texas > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Mississippi > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Louisiana > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Gulf of Mexico > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- Reservoir Description and Dynamics > Reservoir Simulation (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization (1.00)
- Reservoir Description and Dynamics > Reserves Evaluation > Estimates of resource in place (1.00)
- Reservoir Description and Dynamics > Fluid Characterization > Phase behavior and PVT measurements (1.00)
...Solution gas drive reservoirs Oil ...reservoirs that do not initially contain free gas but develop free gas on pressure depletion are classified as... solution gas drives. The solution gas drive mechanism applies once the pressure falls below thebubblepoint. Both black- and volatile-oil ...
Oil reservoirs that do not initially contain free gas but develop free gas on pressure depletion are classified as solution gas drives. The solution gas drive mechanism applies once the pressure falls below thebubblepoint. Both black- and volatile-oil reservoirs are amenable to solution gas drive. Other producing mechanisms may, and often do, augment the solution gas drive. Solution gas drive reservoir performance is used as a benchmark to compare other producing mechanisms.
- North America > United States > Texas > Permian Basin > Yeso Formation (0.99)
- North America > United States > Texas > Permian Basin > Yates Formation (0.99)
- North America > United States > Texas > Permian Basin > Wolfcamp Formation (0.99)
- (21 more...)
- Reservoir Description and Dynamics > Reservoir Characterization (1.00)
- Reservoir Description and Dynamics > Reserves Evaluation > Estimates of resource in place (1.00)
- Reservoir Description and Dynamics > Fluid Characterization > Phase behavior and PVT measurements (1.00)
- Reservoir Description and Dynamics > Formation Evaluation & Management > Drillstem/well testing (0.92)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
...Material balance in waterdrive reservoirs The objectives of a material-balance analysis include: * Confirming the producing mechanism * E...stimating the original oil in place (OOIP) * Estimating the water influx history * Estimating the ...water influx model parameters The ...
- North America > United States > Texas > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Mississippi > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Louisiana > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
- North America > United States > Gulf of Mexico > East Gulf Coast Tertiary Basin > Wilcox Formation (0.99)
...Water influx models ...Water influx models are mathematical models that simulate and predict aquifer performance. Most important...ly, they predict the cumulative water influx history. When successfully integrated with areservoir simulator, the net result is a model t...
...Material balance in oil reservoirs The material-balance equation is the simplest expression of the conservation of mass in a reservo...Material balance equation The applicable equation for initially saturated volatile- and black-oil reservoirs is[1][2][3][4] ...(1) where: * Gfgi, Nfoi, and W are the initial free gas, oil,... and water in place, respectively * Gp, Np, and Wp are the cumulative produced gas, oil, and ...
The material-balance equation is the simplest expression of the conservation of mass in a reservoir. The equation mathematically defines the different producing mechanisms and effectively relates the reservoir fluid and rock expansion to the subsequent fluid withdrawal. The applicable equation for initially saturated volatile- and black-oil reservoirs is[1][2][3][4] Most of the equations regarding primary drive mechanisms for oil reservoirs apply to any consistent set of units. A few equations, however, are written assuming English or customary units. Nfoi and Gfgi are related to the total original oil in place (OOIP) and original gas in place (OGIP),N and G, according to N Nfoi Gfgi Rvi and G Gfgi N foi Rsi.
- North America > United States > Texas > Permian Basin > Yeso Formation (0.99)
- North America > United States > Texas > Permian Basin > Yates Formation (0.99)
- North America > United States > Texas > Permian Basin > Wolfcamp Formation (0.99)
- (21 more...)
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)