Difference between revisions of "Methods for obtaining formation fluid pressures"
Jump to navigation
Jump to search
(format) |
Cwhitehurst (talk | contribs) m (added Category:Treatise Handbook 3 using HotCat) |
||
(4 intermediate revisions by 2 users not shown) | |||
Line 6: | Line 6: | ||
| part = Critical elements of the petroleum system | | part = Critical elements of the petroleum system | ||
| chapter = Formation fluid pressure and its application | | chapter = Formation fluid pressure and its application | ||
− | | frompg = 5- | + | | frompg = 5-29 |
− | | topg = 5- | + | | topg = 5-29 |
| author = Edward A. Beaumont, Forrest Fiedler | | author = Edward A. Beaumont, Forrest Fiedler | ||
| link = http://archives.datapages.com/data/specpubs/beaumont/ch05/ch05.htm | | link = http://archives.datapages.com/data/specpubs/beaumont/ch05/ch05.htm | ||
Line 22: | Line 22: | ||
|- | |- | ||
| | | | ||
− | * Using RFT (repeat formation tester) data | + | * Using [[Wireline formation testers|RFT (repeat formation tester)]] data |
* Using reservoir bottom-hole pressure buildup tests | * Using reservoir bottom-hole pressure buildup tests | ||
* Using DST shut-in pressures | * Using DST shut-in pressures | ||
Line 33: | Line 33: | ||
==Accuracy of measured pressures== | ==Accuracy of measured pressures== | ||
− | RFTs, DSTs, and bottom-hole pressure buildup tests measure formation fluid pressures. Pressure gauge accuracy is a critical factor in all three tests, but the BHP measurement is generally more precise due to the greater time taken for the test. Generally two types of gauges measure pressures: strain and quartz. The table below shows the accuracy and precision of both types. | + | RFTs, DSTs, and bottom-hole pressure buildup tests measure formation fluid pressures. Pressure gauge accuracy is a critical factor in all three tests, but the BHP measurement is generally more precise due to the greater time taken for the test. Generally two types of gauges measure pressures: strain and [[quartz]]. The table below shows the accuracy and precision of both types. |
{| class = "wikitable" | {| class = "wikitable" | ||
Line 43: | Line 43: | ||
| Strain Gauge | | Strain Gauge | ||
| 0.18 | | 0.18 | ||
− | | | + | | < 1 psi |
|- | |- | ||
| Quartz Gauge | | Quartz Gauge | ||
Line 61: | Line 61: | ||
[[Category:Critical elements of the petroleum system]] | [[Category:Critical elements of the petroleum system]] | ||
[[Category:Formation fluid pressure and its application]] | [[Category:Formation fluid pressure and its application]] | ||
+ | [[Category:Treatise Handbook 3]] |
Latest revision as of 17:54, 17 February 2022
Exploring for Oil and Gas Traps | |
Series | Treatise in Petroleum Geology |
---|---|
Part | Critical elements of the petroleum system |
Chapter | Formation fluid pressure and its application |
Author | Edward A. Beaumont, Forrest Fiedler |
Link | Web page |
Store | AAPG Store |
Methods for obtaining formation fluid pressures can be divided into two groups: measured and estimated. The table below lists the methods by these two categories.
Measured | Estimated |
---|---|
|
|
Accuracy of measured pressures[edit]
RFTs, DSTs, and bottom-hole pressure buildup tests measure formation fluid pressures. Pressure gauge accuracy is a critical factor in all three tests, but the BHP measurement is generally more precise due to the greater time taken for the test. Generally two types of gauges measure pressures: strain and quartz. The table below shows the accuracy and precision of both types.
Gauge type | Accuracy (% Full Scale) | Precision |
---|---|---|
Strain Gauge | 0.18 | < 1 psi |
Quartz Gauge | 0.025 | 0.01 psi |