CN110644976A - Gas tracer monitoring technology in miscible flooding - Google Patents
Gas tracer monitoring technology in miscible flooding Download PDFInfo
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- CN110644976A CN110644976A CN201910976262.4A CN201910976262A CN110644976A CN 110644976 A CN110644976 A CN 110644976A CN 201910976262 A CN201910976262 A CN 201910976262A CN 110644976 A CN110644976 A CN 110644976A
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- 239000000700 radioactive tracer Substances 0.000 title claims abstract description 62
- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000007405 data analysis Methods 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 7
- 238000010835 comparative analysis Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 229910018503 SF6 Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 16
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
Abstract
The invention discloses a gas tracer monitoring technology in miscible flooding, which comprises the following steps: the method comprises the following steps of preparing, screening gas tracers, preparing before putting the gas tracers, injecting the gas tracers, collecting gas samples, detecting, recording data and obtaining a curve graph, data analysis, monitoring results and conclusions. The invention has the beneficial effects that: by setting preparation before putting the gas tracer, the putting amount and the concentration of the tracer can be determined according to related data of an oil well, and the effect after putting is ensured to be optimal; through the set data analysis, all monitoring results are summarized and analyzed, and the correctness of the obtained results can be further ensured.
Description
Technical Field
The invention relates to the technical field of interwell tracing, in particular to a gas tracer monitoring technology in miscible phase flooding.
Background
Isotope tracer technique (isotope tracer technique) is a technique for researching scientific problems in the fields of various physics, chemistry, biology, environment and materials, etc. by using radioactive isotope or enriched rare stable nuclide as tracer, and the tracer is a substance composed of tracer atoms or molecules, is widely applied to the exploitation of oil wells and oil fields, and is an important auxiliary means for modern exploitation. Miscible flooding refers to a displacement method for improving recovery efficiency by leading injected fluid (hydrocarbon gas or non-hydrocarbon gas) and formation crude oil to achieve miscible phase under certain conditions, and tracer monitoring technology is an important component in a comprehensive miscible flooding monitoring scheme; in the existing tracing technology, most of the adopted water tracer monitoring technologies are applicable to most of conditions, but have certain limitation under specific conditions, the use effect in volatile oil reservoirs is poor, and in order to effectively develop the oil fields and provide a good monitoring scheme for gas injection non-miscible flooding oil fields and gas fields, a gas tracer monitoring technology in miscible flooding is provided.
Disclosure of Invention
The invention mainly aims to provide a gas tracer monitoring technology in miscible flooding, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the gas tracer monitoring technology in miscible flooding comprises the following steps:
s1, preparing, namely preparing related gas tracers to be used and preparing detection equipment used in detection;
s2, screening gas tracers, combining the characteristics and classification of different gas tracers according to data obtained by actual conditions, and then combining actual oil field bottom layer mineral distribution to select the most suitable gas tracers as monitoring agents;
s3, preparing before feeding the gas tracer, and after the step S2 is finished, preparing before feeding the tracer by adopting the feeding amount and concentration within a proper range;
s4, injecting a gas tracer, and after the step S3 is completed, injecting the prepared gas tracer into the fluid in the oil field at a certain speed by using a tracer container so that the concentration of the gas tracer in the formation gas reaches 10 mug/L ~ 20 mug/L;
s5, collecting and detecting a gas sample, collecting a certain amount of miscible flooding gas sample, purifying and removing impurities of the gas sample, and detecting and analyzing components of the treated gas sample;
s6, recording data and obtaining a curve graph, after the step S5 is completed, recording the data obtained in the step S5, obtaining the concentration of the gas tracer in the sample according to the gas standard concentration curve, and generating the concentration curve graph of the gas tracer by using a related device;
s7, analyzing the data, summarizing the data obtained in the step and the obtained data such as oil and gas well production dynamics by using an industrial computer after the step S6 is completed, and combining all the graphs into one graph for comparative analysis;
and S8, monitoring results and conclusions, wherein after the step S7 is completed, detection results are obtained according to the results of data analysis in the step S7, and final conclusions are obtained according to the data.
Preferably, the gas tracer in step S1 includes two of fluoroalkane and sulfur hexafluoride, and the detection device in step S1 is a gas chromatograph.
Preferably, the preparation before placement in step S3 includes familiarizing the history of the oilfield well and analyzing the background concentration of the oilfield well, and the placement amount and concentration in step S3 are determined according to the fluid composition content in the oilfield well.
Preferably, the injection speed of the gas tracer in the step S4 is 50L/h.
Preferably, in S5, a gas sample is collected and detected, and the gas sample is purified to remove impurities and detected by a gas chromatograph.
Preferably, the graph is generated in step S6 by using a relevant device, and the device is an industrial computer and corresponding gas tracer interpretation software.
Preferably, in step S7, an industrial computer is used to collect the data obtained in the above steps and the data obtained from the production dynamics of the oil and gas wells, and combine all the graphs into one graph for comparative analysis.
Compared with the prior art, the invention has the following beneficial effects: by setting preparation before putting the gas tracer, the putting amount and the concentration of the tracer can be determined according to related data of an oil well, and the effect after putting is ensured to be optimal;
through the set data analysis, all monitoring results are summarized and analyzed, and the correctness of the obtained results can be further ensured.
Drawings
Fig. 1 is a schematic process flow diagram of the gas tracer monitoring technique in miscible flooding according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
The gas tracer monitoring technology in miscible flooding as shown in figure 1 comprises the following steps:
s1, preparing, namely preparing related gas tracers to be used and preparing detection equipment used in detection;
s2, screening gas tracers, combining the characteristics and classification of different gas tracers according to data obtained by actual conditions, and then combining actual oil field bottom layer mineral distribution to select the most suitable gas tracers as monitoring agents;
s3, preparing before feeding the gas tracer, and after the step S2 is finished, preparing before feeding the tracer by adopting the feeding amount and concentration within a proper range;
s4, injecting a gas tracer, and after the step S3 is completed, injecting the prepared gas tracer into the fluid in the oil field at a certain speed by using a tracer container so that the concentration of the gas tracer in the formation gas reaches 10 mug/L ~ 20 mug/L;
s5, collecting and detecting a gas sample, collecting a certain amount of miscible flooding gas sample, purifying and removing impurities of the gas sample, and detecting and analyzing components of the treated gas sample;
s6, recording data and obtaining a curve graph, after the step S5 is completed, recording the data obtained in the step S5, obtaining the concentration of the gas tracer in the sample according to the gas standard concentration curve, and generating the concentration curve graph of the gas tracer by using a related device;
s7, analyzing the data, summarizing the data obtained in the step and the obtained data such as oil and gas well production dynamics by using an industrial computer after the step S6 is completed, and combining all the graphs into one graph for comparative analysis;
and S8, monitoring results and conclusions, wherein after the step S7 is completed, detection results are obtained according to the results of data analysis in the step S7, and final conclusions are obtained according to the data.
Wherein, the gas tracer in step S1 includes two types of fluorinated alkane and sulfur hexafluoride, and the detection device in step S1 is a gas chromatograph; the preparation before the putting in step S3 comprises the steps of familiarizing the history of the oil field well and analyzing the background concentration of the oil field well, and the putting in amount and the concentration in the step S3 are determined according to the content of the fluid components in the oil field well, so that the best effect after the putting in can be ensured; the injection speed of the gas tracer in the step S4 is 50L/h; collecting a gas sample and detecting in S5, collecting a certain amount of miscible flooding gas sample, purifying and removing impurities of the gas sample, and detecting and analyzing components of the treated gas sample; in the step S6, a gas tracer concentration curve chart is generated by using related devices, and the adopted devices are an industrial computer and corresponding gas tracer explanation software; in step S7, the data obtained in the above steps and the data such as production dynamics of the oil and gas wells are gathered by using an industrial computer, all the graphs are combined into one graph for comparative analysis, all the data are gathered, the graphs are combined, so that the comparison is convenient for workers, the monitoring effect is improved, meanwhile, the communication condition between oil field layers and between fault blocks can be synchronously known, the original oil reservoir model is corrected, and the optimal mining mode can be conveniently selected.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. The gas tracer monitoring technology in miscible flooding is characterized by comprising the following steps of:
s1, preparing, namely preparing related gas tracers to be used and preparing detection equipment used in detection;
s2, screening gas tracers, combining the characteristics and classification of different gas tracers according to data obtained by actual conditions, and then combining actual oil field bottom layer mineral distribution to select the most suitable gas tracers as monitoring agents;
s3, preparing before feeding the gas tracer, and after the step S2 is finished, preparing before feeding the tracer by adopting the feeding amount and concentration within a proper range;
s4, injecting a gas tracer, and after the step S3 is completed, injecting the prepared gas tracer into the fluid in the oil field at a certain speed by using a tracer container so that the concentration of the gas tracer in the formation gas reaches 10 mug/L ~ 20 mug/L;
s5, collecting and detecting a gas sample, collecting a certain amount of miscible flooding gas sample, purifying and removing impurities of the gas sample, and detecting and analyzing components of the treated gas sample;
s6, recording data and obtaining a curve graph, after the step S5 is completed, recording the data obtained in the step S5, obtaining the concentration of the gas tracer in the sample according to the gas standard concentration curve, and generating the concentration curve graph of the gas tracer by using a related device;
s7, analyzing the data, summarizing the data obtained in the step and the obtained data such as oil and gas well production dynamics by using an industrial computer after the step S6 is completed, and combining all the graphs into one graph for comparative analysis;
and S8, monitoring results and conclusions, wherein after the step S7 is completed, detection results are obtained according to the results of data analysis in the step S7, and final conclusions are obtained according to the data.
2. The technique for monitoring gas tracer in miscible flooding according to claim 1, wherein the gas tracer in step S1 includes both fluoroalkane and sulfur hexafluoride, and the detection equipment in step S1 is a gas chromatograph.
3. The miscible flooding gas tracer monitoring technique according to claim 1, wherein the preparation before placement in step S3 comprises familiarizing the well history and analyzing the background concentration of the well, and the placement and concentration in step S3 are determined according to the fluid composition content in the well.
4. The technique for monitoring a gas tracer in miscible flooding according to claim 1, wherein the injection rate of the gas tracer in step S4 is about 50L/h.
5. The technique for monitoring a gas tracer in miscible flooding according to claim 1, wherein in S5, a gas sample is collected and detected, and the gas sample is purified and detected by a gas chromatograph.
6. The technique for monitoring gas tracer in miscible flooding according to claim 1, wherein the step S6 is implemented by using relevant devices to generate a gas tracer concentration curve, and the devices used are a computer and corresponding gas tracer interpretation software.
7. The technique for monitoring gas tracer in miscible flooding as claimed in claim 1, wherein in step S7, the data obtained in the above steps and the data obtained from production dynamics of oil and gas wells are collected by industrial computer, and all the graphs are combined into one graph for comparative analysis.
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| CN201910976262.4A CN110644976A (en) | 2019-10-15 | 2019-10-15 | Gas tracer monitoring technology in miscible flooding |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910976262.4A CN110644976A (en) | 2019-10-15 | 2019-10-15 | Gas tracer monitoring technology in miscible flooding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341479A (en) * | 2021-05-24 | 2021-09-03 | 国电建投内蒙古能源有限公司 | Tracing test method for determining hydraulic connectivity of mining area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041370A (en) * | 2015-08-24 | 2015-11-11 | 安徽理工大学 | Two-dimensional flow field testing method applied to coal seam gas extraction by drilling boreholes down seam |
| CN205154147U (en) * | 2015-10-27 | 2016-04-13 | 中国石油化工股份有限公司 | Gaseous spike agent injection device |
| CN107956470A (en) * | 2017-11-15 | 2018-04-24 | 北京捷贝通石油技术有限公司 | A kind of gas base trace chemistry tracer and the method using its measurement each section of aerogenesis contribution amount of gas well |
| CN108919379A (en) * | 2018-05-08 | 2018-11-30 | 中国石油天然气股份有限公司 | It is fluorinated class gas tracer and its application and monitoring tracing method |
-
2019
- 2019-10-15 CN CN201910976262.4A patent/CN110644976A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041370A (en) * | 2015-08-24 | 2015-11-11 | 安徽理工大学 | Two-dimensional flow field testing method applied to coal seam gas extraction by drilling boreholes down seam |
| CN205154147U (en) * | 2015-10-27 | 2016-04-13 | 中国石油化工股份有限公司 | Gaseous spike agent injection device |
| CN107956470A (en) * | 2017-11-15 | 2018-04-24 | 北京捷贝通石油技术有限公司 | A kind of gas base trace chemistry tracer and the method using its measurement each section of aerogenesis contribution amount of gas well |
| CN108919379A (en) * | 2018-05-08 | 2018-11-30 | 中国石油天然气股份有限公司 | It is fluorinated class gas tracer and its application and monitoring tracing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113341479A (en) * | 2021-05-24 | 2021-09-03 | 国电建投内蒙古能源有限公司 | Tracing test method for determining hydraulic connectivity of mining area |
| CN113341479B (en) * | 2021-05-24 | 2024-05-07 | 国电建投内蒙古能源有限公司 | Trace test method for determining hydraulic connectivity of goaf |
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Application publication date: 20200103 |