CA2699855A1 - Method and system for interpreting swabbing tests using nonlinear regression - Google Patents
Method and system for interpreting swabbing tests using nonlinear regression Download PDFInfo
- Publication number
- CA2699855A1 CA2699855A1 CA2699855A CA2699855A CA2699855A1 CA 2699855 A1 CA2699855 A1 CA 2699855A1 CA 2699855 A CA2699855 A CA 2699855A CA 2699855 A CA2699855 A CA 2699855A CA 2699855 A1 CA2699855 A1 CA 2699855A1
- Authority
- CA
- Canada
- Prior art keywords
- reservoir
- wellbore
- pipe
- measured
- pressure
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 12
- 238000009530 blood pressure measurement Methods 0.000 claims abstract 11
- 239000012530 fluid Substances 0.000 claims abstract 7
- 230000035699 permeability Effects 0.000 claims 9
- 230000015572 biosynthetic process Effects 0.000 claims 6
- 238000005553 drilling Methods 0.000 claims 6
- 229930195733 hydrocarbon Natural products 0.000 claims 3
- 150000002430 hydrocarbons Chemical class 0.000 claims 3
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/008—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
A method for increasing production in a reservoir, comprising performing a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir, periodically measuring, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe, and determining a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements.
Claims (20)
1. A method for increasing production in a reservoir, comprising:
performing a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir;
periodically measuring, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe; and determining a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements.
performing a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir;
periodically measuring, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe; and determining a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements.
2. The method of claim 1 further comprising:
generating, after determining a plurality of flow rates of fluid, a model of the reservoir using the plurality of flow rates of fluid, wherein the model is used to determine a production potential of the reservoir.
generating, after determining a plurality of flow rates of fluid, a model of the reservoir using the plurality of flow rates of fluid, wherein the model is used to determine a production potential of the reservoir.
3. The method of claim 2, wherein generating the model of the reservoir comprises:
determining a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates.
determining a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates.
4. The method of claim 3, further comprising:
determining, after generating the model, an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment; and performing the operation.
determining, after generating the model, an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment; and performing the operation.
5. The method of claim 1, wherein the flow rate equation comprises:
Q(i) = [kh(P i-P(i))]/{162.6B0µ[log(kt/(.PHI.µc t r w 2)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
Q(i) = [kh(P i-P(i))]/{162.6B0µ[log(kt/(.PHI.µc t r w 2)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
6. The method of claim 1, wherein the plurality of pressure measurements is taken continuously.
7. The method of claim 1, wherein the plurality of flow rates is determined after the swabbing test concludes.
8. The method of claim 1, wherein the swabbing test is one of a plurality of swabbing tests and the depth in the wellbore is one of a plurality of depths in the wellbore.
9. A computer readable medium, embodying instructions executable by a computer to perform a method, the instructions comprising functionality to:
perform a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir;
periodically measure, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe;
determine a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements; and generate a model of the reservoir using the plurality of flow rates of fluid, wherein the model is used to determine a production potential of the reservoir.
perform a swabbing test at a depth in a pipe, wherein the pipe is located in a wellbore and wherein a portion of the wellbore is located inside the reservoir;
periodically measure, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe;
determine a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements; and generate a model of the reservoir using the plurality of flow rates of fluid, wherein the model is used to determine a production potential of the reservoir.
10. The computer readable medium of claim 9, further comprising instructions to:
determine, before generating the model of the reservoir, a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates.
determine, before generating the model of the reservoir, a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates.
11. The computer readable medium of claim 10, further comprising:
determine, after generating the model of the reservoir, an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment.
determine, after generating the model of the reservoir, an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment.
12. The computer readable medium of claim 9, wherein the flow rate equation comprises:
Q(i) = [kh(P i-P(1))]/{162.6B oµ[log(kt/(.PHI.µc t r w)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
Q(i) = [kh(P i-P(1))]/{162.6B oµ[log(kt/(.PHI.µc t r w)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
13. The computer readable medium of claim 9, wherein the plurality of pressure measurements is taken continuously.
14. The computer readable medium of claim 9, wherein the plurality of flow rates is determined after the swabbing test concludes.
15. The computer readable medium of claim 9, wherein the swabbing test is one of a plurality of swabbing tests and the depth in the wellbore is one of a plurality of depths in the wellbore.
16. A computer readable medium, embodying instructions executable by a computer to perform a method, the instructions comprising functionality to:
perform a swabbing test at a depth in a pipe, wherein the pipe is located in the wellbore;
periodically measure, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe;
determine a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements;
determine a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates; and determine an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment.
perform a swabbing test at a depth in a pipe, wherein the pipe is located in the wellbore;
periodically measure, during the swabbing test, pressure in the bottom portion of the pipe using the pressure gauge to obtain a plurality of pressure measurements, wherein the pressure gauge is affixed to an inner wall of a bottom portion of the pipe;
determine a plurality of flow rates of fluid flowing from the reservoir through perforations in the wellbore into the pipe using a flow rate equation and the plurality of pressure measurements;
determine a permeability of the reservoir using a nonlinear regression model and the plurality of flow rates; and determine an operation to perform, using the permeability, to increase the production of hydrocarbons in the reservoir, wherein the operation comprises at least one from a group consisting of drilling an additional wellbore, drilling a lateral in the wellbore, fracturing the formation, and installing and operating production equipment.
17. The computer readable medium of claim 16, wherein the flow rate equation comprises:
Q(i) = [kh(P i-P(1))]/{162.6B oµ[log(kt/(.PHI.µc t r w2)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
Q(i) = [kh(P i-P(1))]/{162.6B oµ[log(kt/(.PHI.µc t r w2)-3.23+0.868s]}
wherein Q(i) is the instantaneous flow rate at time i, k is the permeability, measured in millidarcy (md), h is the thickness of the reservoir, measured in feet (ft), P i is the initial pressure, P(i) is the instantaneous pressure at time t i, B o is the formation volume factor (a unitless number), µ is the viscosity, measured in centipoise (cP), t is the time, measured in hours, .PHI. is porosity in terms of a unitless fraction, c t is the total compressibility, measured in terms of inverse pounds per square inch (psi-1), r w is the radius of the pipe, measured in feet (ft), and s is the skin, a unitless number.
18. The computer readable medium of claim 16, wherein the plurality of pressure measurements is taken continuously.
19. The computer readable medium of claim 16, wherein the plurality of flow rates are calculated after the swabbing test concludes.
20. The computer readable medium of claim 16, wherein the swabbing test is one of a plurality of swabbing tests and the depth in the wellbore is one of a plurality of depths in the wellbore.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US97638307P | 2007-09-28 | 2007-09-28 | |
| US60/976,383 | 2007-09-28 | ||
| US12/236,442 US8086431B2 (en) | 2007-09-28 | 2008-09-23 | Method and system for interpreting swabbing tests using nonlinear regression |
| US12/236,442 | 2008-09-23 | ||
| PCT/US2008/077514 WO2009045816A2 (en) | 2007-09-28 | 2008-09-24 | Method and system for interpreting swabbing tests using nonlinear regression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2699855A1 true CA2699855A1 (en) | 2009-04-09 |
| CA2699855C CA2699855C (en) | 2012-06-19 |
Family
ID=40506874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2699855A Expired - Fee Related CA2699855C (en) | 2007-09-28 | 2008-09-24 | Method and system for interpreting swabbing tests using nonlinear regression |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8086431B2 (en) |
| AR (1) | AR068290A1 (en) |
| CA (1) | CA2699855C (en) |
| MX (1) | MX2010003216A (en) |
| RU (1) | RU2474682C2 (en) |
| WO (1) | WO2009045816A2 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8145463B2 (en) * | 2005-09-15 | 2012-03-27 | Schlumberger Technology Corporation | Gas reservoir evaluation and assessment tool method and apparatus and program storage device |
| US8244509B2 (en) * | 2007-08-01 | 2012-08-14 | Schlumberger Technology Corporation | Method for managing production from a hydrocarbon producing reservoir in real-time |
| GB2504197B (en) * | 2012-05-25 | 2019-04-10 | Schlumberger Holdings | Automatic fluid coding and hydraulic zone determination |
| CA2874994C (en) * | 2012-06-15 | 2017-02-07 | Landmark Graphics Corporation | Systems and methods for solving a multi-reservoir system with heterogeneous fluids coupled to a common gathering network |
| CN105829647B (en) | 2013-11-19 | 2020-05-12 | 迈内克斯Crc有限公司 | Borehole logging method and apparatus |
| GB2523751A (en) * | 2014-03-03 | 2015-09-09 | Maersk Olie & Gas | Method for managing production of hydrocarbons from a subterranean reservoir |
| CN104847314B (en) * | 2015-06-08 | 2017-07-18 | 四川大学 | HTHP oil gas straight well single-phase flow perforation completion parameter optimization method |
| RU2673093C2 (en) * | 2017-04-24 | 2018-11-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | Method for express determination of the characteristics of the bottomhole formation zone applied when developing the well |
| US11378506B2 (en) | 2017-12-12 | 2022-07-05 | Baker Hughes, A Ge Company, Llc | Methods and systems for monitoring drilling fluid rheological characteristics |
| CN109025959B (en) * | 2018-07-04 | 2022-03-29 | 中国石油天然气股份有限公司 | Method and device for determining height of perforation test combined liquid pad |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5974874A (en) * | 1993-10-20 | 1999-11-02 | Gas Research Institute | Method for testing gas wells in low pressured gas formations |
| US5573064A (en) * | 1995-05-24 | 1996-11-12 | Specialty Machine & Supply, Inc. | Automatic catch apparatus and method |
| RU2121564C1 (en) * | 1996-09-02 | 1998-11-10 | Шакиров Рустам Анисович | Device for well swabbing |
| US6148912A (en) * | 1997-03-25 | 2000-11-21 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling control and production |
| NO305259B1 (en) * | 1997-04-23 | 1999-04-26 | Shore Tec As | Method and apparatus for use in the production test of an expected permeable formation |
| CA2256258C (en) * | 1998-12-16 | 2007-10-02 | Konstandinos S. Zamfes | Swab test for determining relative formation productivity |
| US6220087B1 (en) * | 1999-03-04 | 2001-04-24 | Schlumberger Technology Corporation | Method for determining equivalent static mud density during a connection using downhole pressure measurements |
| RU2166077C2 (en) * | 1999-04-05 | 2001-04-27 | Нуретдинов Язкар Карамович | Method of well testing and control in swabbing process |
| GB0024378D0 (en) * | 2000-10-05 | 2000-11-22 | Expro North Sea Ltd | Improved well testing system |
| US7027968B2 (en) * | 2002-01-18 | 2006-04-11 | Conocophillips Company | Method for simulating subsea mudlift drilling and well control operations |
| WO2003102371A1 (en) * | 2002-05-31 | 2003-12-11 | Schlumberger Canada Limited | Method and apparatus for effective well and reservoir evaluation without the need for well pressure history |
| US6672386B2 (en) * | 2002-06-06 | 2004-01-06 | Baker Hughes Incorporated | Method for in-situ analysis of formation parameters |
| RU2213861C1 (en) * | 2002-07-09 | 2003-10-10 | ООО Промышленно-строительная компания "Дом" | Method of treatment of bottomhole formation zone |
| US8620636B2 (en) * | 2005-08-25 | 2013-12-31 | Schlumberger Technology Corporation | Interpreting well test measurements |
| US7836973B2 (en) * | 2005-10-20 | 2010-11-23 | Weatherford/Lamb, Inc. | Annulus pressure control drilling systems and methods |
| US20070284107A1 (en) * | 2006-06-02 | 2007-12-13 | Crichlow Henry B | Heavy Oil Recovery and Apparatus |
-
2008
- 2008-09-23 US US12/236,442 patent/US8086431B2/en not_active Expired - Fee Related
- 2008-09-24 CA CA2699855A patent/CA2699855C/en not_active Expired - Fee Related
- 2008-09-24 MX MX2010003216A patent/MX2010003216A/en not_active Application Discontinuation
- 2008-09-24 RU RU2010116746/03A patent/RU2474682C2/en not_active IP Right Cessation
- 2008-09-24 WO PCT/US2008/077514 patent/WO2009045816A2/en active Application Filing
- 2008-09-29 AR ARP080104234A patent/AR068290A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| US8086431B2 (en) | 2011-12-27 |
| CA2699855C (en) | 2012-06-19 |
| WO2009045816A9 (en) | 2009-09-03 |
| RU2010116746A (en) | 2011-11-10 |
| WO2009045816A2 (en) | 2009-04-09 |
| AR068290A1 (en) | 2009-11-11 |
| RU2474682C2 (en) | 2013-02-10 |
| US20090084544A1 (en) | 2009-04-02 |
| WO2009045816A3 (en) | 2009-06-11 |
| MX2010003216A (en) | 2010-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150924 |