US20210270124A1 - Method for distinguishing authenticity of high-pressure physical property parameters of oil reservoirs - Google Patents
Method for distinguishing authenticity of high-pressure physical property parameters of oil reservoirs Download PDFInfo
- Publication number
- US20210270124A1 US20210270124A1 US17/256,005 US201917256005A US2021270124A1 US 20210270124 A1 US20210270124 A1 US 20210270124A1 US 201917256005 A US201917256005 A US 201917256005A US 2021270124 A1 US2021270124 A1 US 2021270124A1
- Authority
- US
- United States
- Prior art keywords
- standard well
- unit
- oil
- pump
- 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.)
- Abandoned
Links
- 230000000704 physical effect Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003129 oil well Substances 0.000 claims abstract description 26
- 238000012216 screening Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 42
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 239000010779 crude oil Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005070 sampling Methods 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
- E21B47/009—Monitoring of walking-beam pump systems
-
- 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
- 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
-
- 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
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
-
- 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
- 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
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
Definitions
- the present invention relates to the technical field of petroleum engineering, particularly the technical field of exploration of oil wells.
- High-pressure physical property parameters are important parameters that are indispensable for determining oil reservoir types, formulating development plans and performing oil reservoir engineering calculation, and are the basis for studying oil field driving types, determining oil field exploitation modes, calculating oil field reserves and selecting oil well working systems.
- the laboratory determination requires undeveloped wells and needs to meet a series of harsh conditions, such as bottom hole pressure higher than the expected original saturation pressure, no water or water content of no more than 5%, stable oil and gas flow, and no intermittency. Due to the complex composition of crude oil, the charts are often not accurate enough.
- the empirical formulas also have the problem of the scope of application. Therefore, the experimental method, the plate method and the empirical formula method all need to meet certain conditions and are not accurate enough. In particular, there is no easy method to determine the authenticity of the high-pressure physical property parameter values.
- An objective of the present invention is to provide a fast, simple and accurate method for distinguishing the authenticity of high-pressure physical property parameters of oil reservoirs.
- the so-called standard well is the one whose indicator diagram of the oil well reflects that the pump does not leak and its oil tube string does not leak, and in the multiple oil wells, the standard well has the lowest rate of water content, the highest liquid yield and the largest submergence in the multiple oil wells;
- Q leak represents the pump leakage
- GOR represents the gas-oil ratio and the unit is m 3 /m 3 ;
- ⁇ represents the solubility coefficient and the unit is m 3 /(m 3 ⁇ Mpa);
- P b represents the saturation pressure and the unit is Mpa;
- f w represents the water content of the pumped liquid of the standard well and the unit is %
- ⁇ o represents the formation crude oil density and the unit is t/m 3
- ⁇ w represents the water density and the unit is t/m 3
- h dynamic represents the dynamic liquid level depth of the standard well and the unit is m
- hsettm g represents the pump setting depth of the standard well and the unit is m
- p oil represents the wellhead oil pressure of the standard well and the unit is Mpa
- p casing represents the casing pressure of the standard well and the unit is Mpa
- ⁇ o represents the formation crude oil viscosity and the unit is Pa.
- ⁇ min ⁇ ( ⁇ is the set accuracy, generally, 0 ⁇ 0.02)
- the high-pressure physical property parameters corresponding to this group of ( ⁇ theory , ⁇ reality ) are the real high-pressure physical property parameters of a certain zone of this oil reservoir.
- the present invention provides a fast, simple and practical means for distinguishing correct high-pressure physical property parameters.
- the present invention is applicable to those oil wells in a certain zone of an oil reservoir whose high-pressure property parameters is to be determined.
- sampled wells obtained high-pressure physical properties (called sampled wells) in the zone Ef1 of this oil reservoir.
- the m oil wells are sorted according to the water content, and the first n oil wells with the lowest water content are selected in the m selected wells.
- step 3 The data collected in step 1 and step 2 is substituted into the following formula, and the theoretical pump efficiency ⁇ theory and the real pump efficiency ⁇ reality of the standard wells are calculated respectively corresponding to the high-pressure physical property parameters of the sampled wells:
- Q leak ⁇ D ⁇ g ⁇ 3 h /(12 L p / ⁇ ).
- ⁇ min min
- , and ⁇ min ⁇ (here, assuming that ⁇ 0.001).
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Lubricants (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088903.2A CN109869144A (zh) | 2019-01-30 | 2019-01-30 | 一种辨别油藏高压物性参数真伪的方法 |
| CN201910088903.2 | 2019-01-30 | ||
| PCT/CN2019/099696 WO2020155601A1 (zh) | 2019-01-30 | 2019-08-08 | 一种辨别油藏高压物性参数真伪的方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20210270124A1 true US20210270124A1 (en) | 2021-09-02 |
Family
ID=66918352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/256,005 Abandoned US20210270124A1 (en) | 2019-01-30 | 2019-08-08 | Method for distinguishing authenticity of high-pressure physical property parameters of oil reservoirs |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20210270124A1 (zh) |
| CN (1) | CN109869144A (zh) |
| WO (1) | WO2020155601A1 (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869144A (zh) * | 2019-01-30 | 2019-06-11 | 扬州江苏油田瑞达石油工程技术开发有限公司 | 一种辨别油藏高压物性参数真伪的方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080190604A1 (en) * | 2007-02-09 | 2008-08-14 | International Business Machines Corporation | System and Method for Coordinated Monitoring and Control of Multiple Oil Well Pump Systems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085772C (zh) * | 1999-07-15 | 2002-05-29 | 江苏石油勘探局石油工程技术研究院 | 一种有杆泵机械采油工艺参数确定方法 |
| MY127805A (en) * | 2001-01-18 | 2006-12-29 | Shell Int Research | Determining the pvt properties of a hydrocarbon reservoir fluid |
| CN2716505Y (zh) * | 2004-06-10 | 2005-08-10 | 朱续平 | 电子式井下高压物性取样器 |
| CN203145933U (zh) * | 2012-11-06 | 2013-08-21 | 西安安特石油科技有限公司 | 一种双凡尔高压物性取样装置 |
| CN103498661B (zh) * | 2013-10-21 | 2016-09-07 | 郑海金 | 一种确定油藏高压物性参数的方法 |
| CN105626036B (zh) * | 2014-11-07 | 2019-05-31 | 中国石油化工股份有限公司 | 一种确定油藏合理产液量油藏工程计算方法 |
| CN106522927A (zh) * | 2015-09-11 | 2017-03-22 | 中国石油化工股份有限公司 | 改进的合理井底流动压力计算方法 |
| CN107622139B (zh) * | 2016-07-15 | 2020-08-07 | 中国石油天然气股份有限公司 | 裂缝渗透率的计算方法 |
| CN107578342B (zh) * | 2017-07-17 | 2020-09-08 | 中国石油大学(华东) | 一种基于模型耦合穷举法实现低渗透油藏间开工作制度优选方法 |
| CN109869144A (zh) * | 2019-01-30 | 2019-06-11 | 扬州江苏油田瑞达石油工程技术开发有限公司 | 一种辨别油藏高压物性参数真伪的方法 |
-
2019
- 2019-01-30 CN CN201910088903.2A patent/CN109869144A/zh active Pending
- 2019-08-08 WO PCT/CN2019/099696 patent/WO2020155601A1/zh active Application Filing
- 2019-08-08 US US17/256,005 patent/US20210270124A1/en not_active Abandoned
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080190604A1 (en) * | 2007-02-09 | 2008-08-14 | International Business Machines Corporation | System and Method for Coordinated Monitoring and Control of Multiple Oil Well Pump Systems |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020155601A1 (zh) | 2020-08-06 |
| CN109869144A (zh) | 2019-06-11 |
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