CN102322254A - Downhole steam entry profile monitoring method - Google Patents
Downhole steam entry profile monitoring method Download PDFInfo
- Publication number
- CN102322254A CN102322254A CN201110145415A CN201110145415A CN102322254A CN 102322254 A CN102322254 A CN 102322254A CN 201110145415 A CN201110145415 A CN 201110145415A CN 201110145415 A CN201110145415 A CN 201110145415A CN 102322254 A CN102322254 A CN 102322254A
- Authority
- CN
- China
- Prior art keywords
- steam
- radioactive substance
- monitoring method
- entry profile
- vapour
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a monitoring method, in particular to a downhole steam entry profile monitoring method. The downhole steam entry profile monitoring method is characterized in that the downhole steam entry profile monitoring method includes the following steps: (1) radioactive substance is added into injected steam; (2) the radioactive substance and the steam are mixed; (3) the steam mixed with the radioactive substance is injected into a string; (4) the injected steam enters steam-absorbing reservoirs, and at the same time, the radioactive substance is distributed on the surfaces of the steam-absorbing reservoirs according to the proportion of the absorbed steam amount of each steam-absorbing reservoir; (5) along the depth of the string, a detector is used for detecting the radioactive substance distributed on the surfaces of the steam-absorbing reservoirs according to proportion; (6) the detector displays and processes detected signals. The invention provides a steam entry profile radioactivity logging method which can accurately measure flow parameters in steam entry profile logging.
Description
Technical field
The present invention relates to a kind of monitoring method, is down-hole steam entry profile monitoring method specifically.
Background technology
In thick oil filling steam development process, downhole temperature, pressure, flow, mass dryness fraction, steam entry profile monitoring are that cognitive analysis is annotated the vapour effect, improved the important means of annotating the vapour well production.Do the analytical work of heavy oil wells steam injection parameter monitoring well, for improving steam injection reservoir engineering design level, high-quality is implemented the production and injection proration scheme, in time grasps to annotate and adopts oil reservoir dynamic change in the process, guarantee steam soak and vapour drive achieve success significant.
Turbine flowmeter is generally used in flow measurement in the steam entry profile test at present; Its measuring principle is in the pipeline of fixed inner diameter; The rotating speed of flow rate of fluid and turbine is proportional, and through scale, the respective value of the rotating speed of turbine and given normal flow constitutes the scale file.Instrument is measured in actual use is the number of turns of being changeed of turbine in the unit interval (if a circle produces two pulses, then measured value is 2 times of rotating speed).
Can find out that the turbine flow measurement needs metastable flow field, but there is following problem in reality in steamed well:
1, in vapour, the water two phase pit shafts, middle rate of flow of fluid is different with the flow velocity near the borehole wall; The down-hole hole condition is complicated, can not use centralizer, and turbine flow is measured can not be placed in the middle, and measure error is big.
2, there is conversion between steaming G&W two phases in the steam that is injected under the varying environment of down-hole, this conversion also causes rate of flow of fluid unstable, measures the very difficult actual layer position steam absorbing amount that reacts.
3, there is air mass to exist in the thermal production well, the instability that can cause turbine flow to measure equally.
So the survey data of flow parameter can not reflect the steam absorbing amount of inhaling the vapour layer by true and accurate in the steam entry profile well logging at present.
Summary of the invention
The technical problem that the present invention will solve provides a kind of steam entry profile radioactive logging method that can accurately in the steam entry profile well logging, measure flow parameter.
Technical scheme of the present invention is: a kind of down-hole steam entry profile monitoring method, it is characterized in that, and comprise the steps:
1) in steam in jection, adds radioactive substance;
2) radioactive substance and vapor mixing;
3) be mixed with in the radioactive substance steam injection string;
4) steam in jection gets into suction vapour layer according to each steam absorbing amount of inhaling the vapour layer, and meanwhile radioactive substance is distributed in each suction vapour layer steam absorbing amount ratio and inhales the vapour laminar surface;
5) detect the radioactive substance that is distributed in suction vapour laminar surface in proportion by detecting instrument along the tubing string degree of depth;
6) detecting instrument shows the signal that processing and detecting arrives.
Described radioactive substance is isotope or other any radioactive substances such as picture iodine 131, barium 131, plutonium, uranium.
Described detecting instrument is the gamma appearance.
Technique effect of the present invention is: the present invention comes overall merit steam absorbing amount with steam in jection in the amount of the accumulation of inhaling vapour layer position through radioactive substance, for the analysis of steam injection parameter detecting, improve steam oil reservoir designs quality, high-quality and implement the production and injection proration scheme, in time grasp and annotate the oil reservoir dynamic change of adopting in the process, guarantee that steam soak and vapour drive to achieve success and improved the accurate data foundation.To solving current existing problems very important meaning is arranged.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the present invention is further specified:
Fig. 1 is an embodiment of the invention sketch map.
Among the figure, 1, inhale the vapour layer; 2, radioactive substance and vapour mixture; 3, tubing string; 4, second curve; 5, first curve.
The specific embodiment
A kind of down-hole steam entry profile monitoring method, specifically implement through following steps:
1) in steam in jection, adds radioactive substance;
2) radioactive substance and vapor mixing;
3) be mixed with in the radioactive substance steam injection string;
4) steam in jection gets into suction vapour layer according to each steam absorbing amount of inhaling the vapour layer, and meanwhile radioactive substance is distributed in each suction vapour layer steam absorbing amount ratio and inhales the vapour laminar surface;
5) detect the radioactive substance that is distributed in suction vapour laminar surface in proportion by detecting instrument along the tubing string degree of depth;
6) detecting instrument shows the signal that processing and detecting arrives.
Fig. 1 is the key diagram for the explanation said process; Radioactive substance and vapour mixture 2 are descending from tubing string 3 interior injections; Get into the corresponding vapour layer 1 of inhaling, embodiment 1 provides 1,2,3 layer (in fact not being only three layers, through embodiment 1 explanation method of the present invention); Steam in jection gets at 1,2,3 suction vapour layers with different amounts respectively according to each steam absorbing amount of inhaling vapour layer 1; 1,2,3 inhale the vapour layers thickness be respectively h1, h2, h3, like this radioactive substance in each inhale vapour layer h1, h2, steam absorbing amount ratio that h3 is different is distributed in and inhales the vapour laminar surface, is distributed in the radioactive substance of h1, h2, h3 suction vapour laminar surface in proportion along the tubing string depth detection by detecting instrument; Detection signal provides with " envelope area " curve (high order end), and wherein the ratio of S1, S2, S3 area is exactly the ratio of inhaling vapour layer steam absorbing amount in second curve 4.The first little curve 5 of curvilinear motion is not discharge the natural gamma curve that records before the radioactive substance in Fig. 1; After release discharges radioactive substance; Radioactive substance is descending with the steam that is injected; And long-pending in the filter of suction vapour laminar surface, filter is long-pending measures with proportional with the steam absorbing amount of inhaling the vapour layer, and S1, S2, S3 are differences between second curve 4 and first bent 5 that records after radioactive substance discharges.
The principle of the invention is:
In steam in jection, radioactive substance is injected into well; Radioactive substance can be isotope; Along with the inflow of steam in jection, the isotope filter is amassed inhaling the vapour laminar surface, measures the spike curve with the gamma appearance; Show detected signal on the curve, the difference of curve and release back curve isotope intensity has just been represented the size of injection rate before discharging.
Preferred embodiment of the present invention is:
Adopt the radioactivity release to carry radioactive substance and discharge in predetermined well depth position, radioactive substance mixes with the interior steam in jection of pit shaft, inhales and also absorbs the nucleic material when vapour layer is inhaled vapour.And the filter of nucleic material is amassed at suction vapour laminar surface.This moment the gamma curve surveyed with the gamma ray curve contrast that discharges before the nucleic, the corresponding amplitude difference of inhaling in the vapour layer the two promptly reflects the suction vapour situation on this stratum.
Claims (3)
1. a down-hole steam entry profile monitoring method is characterized in that, comprises the steps:
1) in steam in jection, adds radioactive substance;
2) radioactive substance and vapor mixing;
3) be mixed with in the radioactive substance steam injection string;
4) steam in jection gets into suction vapour layer according to each steam absorbing amount of inhaling the vapour layer, and meanwhile radioactive substance is distributed in each suction vapour layer steam absorbing amount ratio and inhales the vapour laminar surface;
5) detect the radioactive substance that is distributed in suction vapour laminar surface in proportion by detecting instrument along the tubing string degree of depth;
6) detecting instrument shows the signal that processing and detecting arrives.
2. a kind of down-hole according to claim 1 steam entry profile monitoring method is characterized in that: described radioactive substance is isotope or other any radioactive substances such as picture iodine 131, barium 131, plutonium, uranium.
3. a kind of down-hole according to claim 1 steam entry profile monitoring method, it is characterized in that: described detecting instrument is the gamma appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145415A CN102322254A (en) | 2011-06-01 | 2011-06-01 | Downhole steam entry profile monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145415A CN102322254A (en) | 2011-06-01 | 2011-06-01 | Downhole steam entry profile monitoring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102322254A true CN102322254A (en) | 2012-01-18 |
Family
ID=45450072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110145415A Pending CN102322254A (en) | 2011-06-01 | 2011-06-01 | Downhole steam entry profile monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102322254A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564024A (en) * | 2014-12-30 | 2015-04-29 | 焦春红 | Environment-friendly tracer flow water witch |
| CN104594887A (en) * | 2014-12-01 | 2015-05-06 | 中国石油天然气股份有限公司 | Reagent, application and equipment for detecting whether oil layer enters high-temperature oxidation stage or not |
| CN106469228A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | Thermal production well steam entry profile means of interpretation based on on-line testing and geologic parameter |
| CN107939379A (en) * | 2017-11-03 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of thick oil heat production steam injection well inhales vapour water swelling elastomer detection method and system |
| CN108505981A (en) * | 2018-03-20 | 2018-09-07 | 西南石油大学 | A kind of velocity flow profile analysis method of Fractured reservoir injection profile agent |
| CN108952693A (en) * | 2018-04-19 | 2018-12-07 | 中国石油天然气股份有限公司 | A kind of determination method of the air-breathing ratio of gas injection well gas entry profile |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4223727A (en) * | 1979-06-22 | 1980-09-23 | Texaco Inc. | Method of injectivity profile logging for two phase flow |
| CN87108005A (en) * | 1986-11-26 | 1988-08-03 | 切夫尔昂研究公司 | Determine the method for steam injection section |
| CN1061459A (en) * | 1990-08-24 | 1992-05-27 | 切夫里昂研究和技术公司 | Utilize the method for unstable radioactive isotope assay steam injection section |
| US5880375A (en) * | 1997-09-11 | 1999-03-09 | Bielski; Roman | Apparatus and method for measuring multi-phase flow |
-
2011
- 2011-06-01 CN CN201110145415A patent/CN102322254A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4223727A (en) * | 1979-06-22 | 1980-09-23 | Texaco Inc. | Method of injectivity profile logging for two phase flow |
| CN87108005A (en) * | 1986-11-26 | 1988-08-03 | 切夫尔昂研究公司 | Determine the method for steam injection section |
| CN1061459A (en) * | 1990-08-24 | 1992-05-27 | 切夫里昂研究和技术公司 | Utilize the method for unstable radioactive isotope assay steam injection section |
| US5880375A (en) * | 1997-09-11 | 1999-03-09 | Bielski; Roman | Apparatus and method for measuring multi-phase flow |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594887A (en) * | 2014-12-01 | 2015-05-06 | 中国石油天然气股份有限公司 | Reagent, application and equipment for detecting whether oil layer enters high-temperature oxidation stage or not |
| CN104594887B (en) * | 2014-12-01 | 2017-10-17 | 中国石油天然气股份有限公司 | It is a kind of to detect reagent and application and equipment that whether oil reservoir enters the high-temperature oxydation stage |
| CN104564024A (en) * | 2014-12-30 | 2015-04-29 | 焦春红 | Environment-friendly tracer flow water witch |
| CN106469228A (en) * | 2015-08-14 | 2017-03-01 | 中国石油化工股份有限公司 | Thermal production well steam entry profile means of interpretation based on on-line testing and geologic parameter |
| CN106469228B (en) * | 2015-08-14 | 2019-09-20 | 中国石油化工股份有限公司 | Thermal production well steam entry profile means of interpretation based on on-line testing and geologic parameter |
| CN107939379A (en) * | 2017-11-03 | 2018-04-20 | 中国石油天然气股份有限公司 | A kind of thick oil heat production steam injection well inhales vapour water swelling elastomer detection method and system |
| CN108505981A (en) * | 2018-03-20 | 2018-09-07 | 西南石油大学 | A kind of velocity flow profile analysis method of Fractured reservoir injection profile agent |
| CN108952693A (en) * | 2018-04-19 | 2018-12-07 | 中国石油天然气股份有限公司 | A kind of determination method of the air-breathing ratio of gas injection well gas entry profile |
| CN108952693B (en) * | 2018-04-19 | 2022-02-01 | 中国石油天然气股份有限公司 | Method for determining gas suction proportion of gas injection well gas suction profile |
| CN109356541A (en) * | 2018-12-11 | 2019-02-19 | 陕西华晨石油科技有限公司 | Electronic dispensing pipe nipple and put-on method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102322254A (en) | Downhole steam entry profile monitoring method | |
| Chatelier et al. | Combined fluid temperature and flow logging for the characterization of hydraulic structure in a fractured karst aquifer | |
| US4223727A (en) | Method of injectivity profile logging for two phase flow | |
| CN104808258A (en) | Method for measuring karst underground water migration path by taking sugars as tracers | |
| CN103161435A (en) | Well test interpretation method of vertical well for thickened oil thermal recovery | |
| CN105190364A (en) | Multiple source neutron measurement, device, system and use thereof | |
| US2443680A (en) | Method of determining the nature of substrata | |
| CN107191180A (en) | A kind of accurate flow rate log means of interpretation of fluid trajectory | |
| CN103939083A (en) | High-temperature six-parameter combination tester, test system and test method | |
| CN107989600A (en) | A kind of water base trace chemistry tracer and the method for measuring water injection well inter well connectivity | |
| CN103399025A (en) | Method and apparatus used for on-line detection of sand mass fraction of multiphase flow | |
| CN204327076U (en) | Drilling fluid leakage comprehensive discrimination system | |
| CN105569640A (en) | Tracer-related traffic logging method | |
| CN106640182A (en) | Drilling gas minimum-flow measurement method | |
| CN208347764U (en) | A kind of across the hole groundwater velocity and direction of deep-well and geologic parameter measurement device | |
| US20110167896A1 (en) | Estimation of reservoir permeability | |
| CN103352689A (en) | Method for determining well diameter with radioactive tracing well measuring technology | |
| CN203905926U (en) | High-temperature six-parameter combination tester and test system | |
| CN103244102A (en) | Defoaming rotor flow pressure differential air injection profile tester, defoaming rotor flow pressure differential air injection profile testing system and defoaming rotor flow pressure differential air injection profile testing method | |
| Davison | Use of Borehole-geophysical Logs and Hydrologic Tests to Characterize Crystalline Rock for Nuclear-waste Storage, Whiteshell Nuclear Research Establishment, Manitoba, and Chalk River Nuclear Laboratory, Ontario, Canada: Technical Report | |
| CN111236927B (en) | Advanced dynamic prediction method using isotope labeled rock mass water guide channel | |
| CN105672996A (en) | Comprehensive recognition system for loss of drilling fluid | |
| US2947869A (en) | Method of studying subsurface formations | |
| CN1073707C (en) | Intellectual dynamic parameter meter for underground water in single well | |
| CN1217160C (en) | Method and equipment for measuring non-Newtonian flow with pulse neutron flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120118 |