CA2592880C - Automated well bore compensation control system - Google Patents
Automated well bore compensation control system Download PDFInfo
- Publication number
- CA2592880C CA2592880C CA2592880A CA2592880A CA2592880C CA 2592880 C CA2592880 C CA 2592880C CA 2592880 A CA2592880 A CA 2592880A CA 2592880 A CA2592880 A CA 2592880A CA 2592880 C CA2592880 C CA 2592880C
- Authority
- CA
- Canada
- Prior art keywords
- pump
- diluents
- oil well
- control system
- compensation control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003129 oil well Substances 0.000 claims abstract description 27
- 239000003085 diluting agent Substances 0.000 claims abstract description 26
- 239000000295 fuel oil Substances 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 239000003921 oil Substances 0.000 claims description 4
- 229920000297 Rayon Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
An automated well bore compensation control system including an oil well, a pump pumping heavy oil from the oil well and at least one sensor monitoring selected pump parameters. A tank is provided containing diluents and a diluents flow line, having flow controls, extends from the tank to the oil well. A controller receives data from the sensor and operates the flow controls to provide diluents to the oil well when the selected pump parameters are not within pre-selected operating limits.
Description
TITLE:
Automated Well Bore Compensation Control System FIELD
The present invention relates to a system that is used to inject fluids into a well bore of an oil well to compensate for the production flow from the well bore.
BACKGROUND
When heavy oil in a well is flowing into a well bore is too viscose, it can cause the pump to stall. When this happens, an operator dumps diluents down the well and restarts the pump. There are also situations in which pumps can be harmed by a lack of inflow. Wells where this frequently occurs have a diluents flow line to facilitate dumping diluents down the well. On such wells, operators dump diluents down the well on a daily basis as a preventative measure to reduce stoppages.
SUMMARY
There is provided an automated well bore compensation control system which includes an oil well, a pump pumping heavy oil from the oil well and at least one sensor monitoring selected pump parameters. A tank is provided containing diluents and a diluents flow line, having flow controls, extends from the tank to the oil well. A
controller receives data from the sensor and operates the flow controls to provide diluents to the oil well when the selected pump parameters are not within pre-selected operating limits.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
THE FIGURE is a schematic view of an automated well bore compensation control system.
DETAILED DESCRIPTION
Automated Well Bore Compensation Control System FIELD
The present invention relates to a system that is used to inject fluids into a well bore of an oil well to compensate for the production flow from the well bore.
BACKGROUND
When heavy oil in a well is flowing into a well bore is too viscose, it can cause the pump to stall. When this happens, an operator dumps diluents down the well and restarts the pump. There are also situations in which pumps can be harmed by a lack of inflow. Wells where this frequently occurs have a diluents flow line to facilitate dumping diluents down the well. On such wells, operators dump diluents down the well on a daily basis as a preventative measure to reduce stoppages.
SUMMARY
There is provided an automated well bore compensation control system which includes an oil well, a pump pumping heavy oil from the oil well and at least one sensor monitoring selected pump parameters. A tank is provided containing diluents and a diluents flow line, having flow controls, extends from the tank to the oil well. A
controller receives data from the sensor and operates the flow controls to provide diluents to the oil well when the selected pump parameters are not within pre-selected operating limits.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
THE FIGURE is a schematic view of an automated well bore compensation control system.
DETAILED DESCRIPTION
An automated well bore compensation control system generally identified by reference numeral 10, will now be described with reference to THE FIGURE.
Structure and Relationship of Parts:
Referring to THE FIGURE, automated well bore compensation control system 10 includes an oil well 12, a pump 14 that pumps heavy oil from oil well 12, and sensors 16 and 18 that monitor selected pump parameters. For example, sensor 16 monitors the torque of pump 14 while sensor 18 monitors the output of pump 14. Other sensor arrangements will be apparent to those skilled in the art based on different circumstances. A
diluents flow line 20 that has flow controls, such as a valve 22 and pump 23, extends from a tank 24 containing diluents to oil well 12. In one embodiment, tank 26 is a production tank and the diluent is the sales oil held by the production tank. A controller 26 receives data from sensor 16 and operates valve 22 and pump 23 to provide diluents to oil well 12 when the selected pump parameters monitored by the sensor 16 are not within pre-selected operating limits. As depicted, controller 26 operates valve 22 and pump 23 to provide diluents to oil well 12 when the torque of pump 14 as measured by sensor 16 is greater than the pre-selected operating limits, or when the output of pump 14 as measured by sensor 18 is less than the pre-selected operating limits. Controller 26 may operate valve 22 for example when the production flow is too viscous, or when oil well 12 is in a pumped off state, i.e. when there is little or no inflow into oil well 12.
Operation:
As pump 14 pumps heavy oil from oil well 12, sensor 16 measures the torque of pump 14 while sensor 18 measures the output flow from pump 14. These readings are transmitted to controller 26. As more viscous oil is pumped, the flow will either drop or remain constant while the torque remains constant or increases. As described above, the flow may also drop due to oil well 12 being in a pumped off state. Once the readings indicate the operation of pump 14 is outside a predetermined range, controller 26 causes valve 22 and pump 23 to cause a diluent, such as lighter oil, to flow down diluent flow line 20 into well 12 in order to reduce the viscosity of the heavy oil. In the case of oil well 12 being in a pumped off state, diluent acts to compensate for the lack of flow in order to prevent any damage to pumps and other equipment down hole.
Structure and Relationship of Parts:
Referring to THE FIGURE, automated well bore compensation control system 10 includes an oil well 12, a pump 14 that pumps heavy oil from oil well 12, and sensors 16 and 18 that monitor selected pump parameters. For example, sensor 16 monitors the torque of pump 14 while sensor 18 monitors the output of pump 14. Other sensor arrangements will be apparent to those skilled in the art based on different circumstances. A
diluents flow line 20 that has flow controls, such as a valve 22 and pump 23, extends from a tank 24 containing diluents to oil well 12. In one embodiment, tank 26 is a production tank and the diluent is the sales oil held by the production tank. A controller 26 receives data from sensor 16 and operates valve 22 and pump 23 to provide diluents to oil well 12 when the selected pump parameters monitored by the sensor 16 are not within pre-selected operating limits. As depicted, controller 26 operates valve 22 and pump 23 to provide diluents to oil well 12 when the torque of pump 14 as measured by sensor 16 is greater than the pre-selected operating limits, or when the output of pump 14 as measured by sensor 18 is less than the pre-selected operating limits. Controller 26 may operate valve 22 for example when the production flow is too viscous, or when oil well 12 is in a pumped off state, i.e. when there is little or no inflow into oil well 12.
Operation:
As pump 14 pumps heavy oil from oil well 12, sensor 16 measures the torque of pump 14 while sensor 18 measures the output flow from pump 14. These readings are transmitted to controller 26. As more viscous oil is pumped, the flow will either drop or remain constant while the torque remains constant or increases. As described above, the flow may also drop due to oil well 12 being in a pumped off state. Once the readings indicate the operation of pump 14 is outside a predetermined range, controller 26 causes valve 22 and pump 23 to cause a diluent, such as lighter oil, to flow down diluent flow line 20 into well 12 in order to reduce the viscosity of the heavy oil. In the case of oil well 12 being in a pumped off state, diluent acts to compensate for the lack of flow in order to prevent any damage to pumps and other equipment down hole.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiments without departing from scope of the Claims.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiments without departing from scope of the Claims.
Claims (5)
1. An automated well bore compensation control system, comprising:
an oil well;
a pump pumping heavy oil from the oil well;
at least one sensor monitoring selected pump parameters;
a tank containing diluents;
a diluents flow line, having flow controls, extending from the tank to the oil well; and a controller receiving data from the sensor and operating the flow controls to provide diluents to the oil well when the selected pump parameters are not within pre-selected operating limits.
an oil well;
a pump pumping heavy oil from the oil well;
at least one sensor monitoring selected pump parameters;
a tank containing diluents;
a diluents flow line, having flow controls, extending from the tank to the oil well; and a controller receiving data from the sensor and operating the flow controls to provide diluents to the oil well when the selected pump parameters are not within pre-selected operating limits.
2. The automated well bore compensation control system as defined in Claim 1, wherein the sensor is monitoring torque of the pump and the controller is operating the flow controls to provide diluents to the oil well when the torque of the pump is greater than the pre-selected operating limits.
3. The automated well bore compensation control system as defined in Claim 1, wherein the sensor is monitoring output of the pump and the controller is operating the flow controls to provide diluents to the oil well when the output of the pump is less than the pre-selected operating limits.
4. The automated well bore compensation control system as defined in Claim 1, wherein the tank containing diluents is a production tanks and the diluent is sales oil.
5. The automated well bore compensation control system as defined in Claim 1, wherein the controller operates the flow controls to provide diluents to the oil well when the oil well is in a pumped off state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2592880A CA2592880C (en) | 2007-06-01 | 2007-06-01 | Automated well bore compensation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2592880A CA2592880C (en) | 2007-06-01 | 2007-06-01 | Automated well bore compensation control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2592880A1 CA2592880A1 (en) | 2008-12-01 |
| CA2592880C true CA2592880C (en) | 2012-10-16 |
Family
ID=40091208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2592880A Active CA2592880C (en) | 2007-06-01 | 2007-06-01 | Automated well bore compensation control system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2592880C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2493361C1 (en) * | 2012-02-27 | 2013-09-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Тюменский государственный нефтегазовый университет" (ТюмГНГУ) | Method for controlling multimachine complex of reservoir pressure maintenance system |
| CA3002330C (en) * | 2015-10-22 | 2023-07-11 | Statoil Petroleum As | Method and system for the optimisation of the addition of diluent to an oil well comprising a downhole pump |
-
2007
- 2007-06-01 CA CA2592880A patent/CA2592880C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2592880A1 (en) | 2008-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |