CN1490494A - Cavity water sampling and generating method for oil well in production - Google Patents
Cavity water sampling and generating method for oil well in production Download PDFInfo
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- CN1490494A CN1490494A CNA031573770A CN03157377A CN1490494A CN 1490494 A CN1490494 A CN 1490494A CN A031573770 A CNA031573770 A CN A031573770A CN 03157377 A CN03157377 A CN 03157377A CN 1490494 A CN1490494 A CN 1490494A
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Abstract
A cavity-type sampling method for the oil well in production state in order to search water and increase oil output features that several samplers and packers are arranged at intervals 3.3-3.5 m in the stratum to be surveyed, the liquid inlet and outlet valves on said sampler with pressure meter are connected to motor or detonator controlled by electronic circuit board, different samplers have different close time for sampling the liquid, and after the pipe is lifted on the ground, the liquid collected by samplers is examined. Its advantages are high efficiency and low cost.
Description
Technical field:
The present invention relates to sampling generating method, particularly producing well used in the oil and gas development technical field at production status hypocavate sampling water detection generating method.
Background technology:
In the oil field development technology, often to carry out sample analysis to the component content in the stratum, find out the high-moisture stratum and carry out the shutoff stratum; At present, the oil well groundwater prospecting method can be divided into two big classes both at home and abroad: the one, and the well warm therapy water detection that can only qualitatively judge; The 2nd, the quantitative test groundwater prospecting method; Wherein the quantitative test groundwater prospecting method was divided into annular space water detection, dials and to look for four kinds of water detection under the situation, carbon-to-oxygen ratio spectrum logging and boron neutron life time logs, but main groundwater prospecting method commonly used was annular space water detection, carbon-to-oxygen ratio spectrum logging and boron neutron life time log.
The water detection of well warm therapy can carried out under the annular space oil pumping state excessively, but can only judge qualitatively that the main product liquid layer is the position in high aquifer; Though the water detection of impedance type annular space can be at the start production status main product layer that judges out, the water-retention value error is too big, and technological requirement decentralized wellhead production tree, or oil well blowing state carries out.
Carbon-to-oxygen ratio spectrum logging and boron neutron life time log are the logging methods under the non-production status, and carbon-to-oxygen ratio spectrum logging is (moisture greater than 90%) in high-water-cut oil-producing well, and it is inaccurate to estimate oil saturation.Though the boron neutron life time log can be estimated out the remaining oil situation of five class oil reservoirs, well logging expense costliness is not suitable for large-scale application.
Summary of the invention:
Deficiency that can not ordinary production when reaching water detection greatly in order to overcome existing water detection generating method water detection content error, the invention provides oil well at production status hypocavate sampling water detection generating method, this method have water detection content error little and under production status water detection ask the characteristics of product, producing well can under production status, carry out the water detection sampling to ask product.
The technical solution adopted in the present invention is: producing well comprises packer, sampler at production status hypocavate sampling water detection generating method, and a, the long-pending 0.01m that is tries to please
3--0.03m
3Join and produce sampler and packer several place in the tested stratum at interval, facing two-stage packer spacing mutually is 3.3～3.5m, thickness of interlayer is 0.8～50m; Be equipped with the import and export switch of liquid on the sampler that is equipped with the memory-type pressure meter, this switch links to each other with motor or the initiator controlled by electronic circuit board, and the sampler that electronic circuit board is provided with each layer is set to the different shut-in times; The liquid sampler of flowing through under the ordinary production state is imported and exported by the sampler that electronic circuit board control motor or initiator are closed Different Strata by the time of predetermined set; Trip out down-hole string, take out the liquid of joining collection in the product sampler and carry out sample examination.
Above-mentioned fixedly cavate sampler can be substituted by the retrievable type sampling cavity; Output can be calculated by diminishing method.
The invention has the beneficial effects as follows: owing to adopt packer and sampler arranged spaced, on sampler, be equipped with the import and export switch of liquid, this switch links to each other with motor or the initiator controlled by electronic circuit board, and the sampler that electronic circuit board is provided with each layer is set to the different shut-in times; Be stored at production status sub-surface liquid and joining in the sampling cavity that produces sampler when producing well, closing the sampler import and export of Different Strata this moment by electronic circuit board control motor or initiator by the time of predetermined set; Trip out down-hole string or wire Launching and Bailing, taking-up is joined the liquid that retains in the product sampler and is carried out sample examination, and playback stream is pressed and static pressure, and asks product by diminishing method, and is convenient and swift, high efficiency, and cost is low.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
1-packer among Fig. 1, the 2-sampler.
The specific embodiment:
Below in conjunction with drawings and the specific embodiments will the invention will be further described:
As shown in fig. 1, producing well comprises packer 1 and sampler 2 at production status hypocavate sampling water detection generating method, and sampler 2 places the stratum of the some intervals that separated by packer 1, and the long-pending 0.01m that is tries to please
3--0.03m
3Join and produce sampler 2 and packer 1 several place in the tested stratum at interval, facing two-stage packer 1 spacing mutually is 3.3～3.5m, thickness of interlayer is 0.8～50m; Packer for blocking water 1 sets for interior latus rectum 61mm twin-tub, presses on the twin-tub balance, holds that pressure energy power is strong up and down, guarantees packer 1 reliably working, uses multistage Packer for blocking water 1 can guarantee to trip out tubing string, also each layer card can be opened; Be equipped with the import and export switch of liquid on the sampler 2 that is equipped with the memory-type pressure meter, this switch links to each other with motor or the initiator controlled by electronic circuit board, and the sampler 2 that electronic circuit board is provided with each layer is set to the different shut-in times; Under the ordinary production state, liquid is flowed through behind the sampler, is imported and exported by the sampler 2 that electronic circuit board control motor or initiator are closed Different Strata by the time of predetermined set; Trip out down-hole string, taking-up is joined the liquid that retains in the product sampler 2 and is carried out sample examination, and playback stream is pressed and static pressure, and asks product by diminishing method, and sampling accurately, and is convenient and swift; Sampler 2 can be substituted by the retrievable type sampling cavity, this kind method is that formation fluid is flowed through in the retrievable type sampling cavity, adopting electronic circuit board control motor or firing makes in each layer the import and export switch on the sampler 2 close at preset timed intervals, after treating that complete each layer of well all finished sampling, pull sampling cavities at different levels one by one out, carry out sample examination, combined ground is obtained each stratification and is tested the result and try to achieve output, with the dead mouth shutoff of high water-bearing interval input, pay interval drops into cock, following insert pump completion.
Adopt said method to be applied to the scene and receive good effect:
Embodiment 1, eastern 3-fourth 7 wells, employing is joined product sampler 2 and is fixedly cavate subdivision of reservoir sampling water detection, this well divides card 7 intervals, generally after the completion produce after 10 days every suction and closed 1 grade of sampler 2 in 3 days, treat that samplers 2 at different levels all cut out after, operation trips out tubing string, moisture and the down-hole formation pressure measurement of each layer liquid sample is got by ground assay office, well head gauging when producing, merit figure, producing fluid level data, each layer is moisture, pressure and liquid-producing capacity see Table one:
| Divide the card interval | Close order | Moisture (%) | Production capacity (t/d) | Stream is pressed MPa | Static pressure MPa | The result |
| ????1 | ??7 | ?74.3 | ?7 | ??9.97 | ?12.91 | |
| ????2 | ??3 | ?83.2 | ?11 | ??10.43 | ?13.81 | |
| ????3 | ??1 | ?99.9 | ?47 | ??10.77 | ?14.76 | High moisture high production fluid |
| ????4 | ??4 | ?87.3 | ?5 | ??9.80 | ?12.97 | |
| ????5 | ??2 | ?95.6 | ?62 | ??10.89 | ?13.85 | High moisture high production fluid |
| ????6 | ??6 | ?21.4 | ?16 | ??11.2 | ?15.26 | |
| ????7 | ??5 | ?74.4 | ?0 | ??11.46 | ?15.47 |
Determine that blocking layer is the 3rd, five a liang of interval.
What embodiment 2, Bei1-50-550Jing adopted is that segmentation water detection of pulling cavate and water blockoff are integrated, water detection finishes after pulling cavate sampler 2 even the closing at different levels, pull samplers 2 at different levels out, find out high aquifer after the creation data of combined ground and the chemical examination, after determining blocking layer, blocking layer is thrown dead mouth, can finish all look for, water blockoff work, one-trip string is finished and is looked for, the water blockoff task.
| Divide the card interval | Sandstone/effectively | Permeability | Close order | Moisture (%) takes a sample | |
| 1 | ?3.6/0.2 | ?2 | ?94.2 | ||
| 2 | ?0.7/0.2 | ?7 | ?67.5 | Between take out | |
| 3 | ?6.5/0.4 | ?1 | ?99.9 | ||
| 4 | ?2.8/0.3 | ?3 | ?87.3 | Between take out |
| ??5 | ??1.1/0.5 | ??0.07 | ??6 | ??22.5 | Between take out |
| ??6 | ??2.0/0.9 | ??4 | ??50.6 | Between take out | |
| ??7 | ??3.1/0.5 | ??0.23 | ??5 | ??74.4 | Between take out |
After the completion, generally produced 8 days, closed 1 layer in per 3 days, in general 8 days of producing, this well is moisture to be 99.9%, promptly all produces water, and gauging production fluid 51t/d, liquid level are at well head, and the band spray is taken out in the indicator card performance; Closing behind the number one interval sample examination result moisture is 92.3%, gauging production fluid 35t/d, and 50 meters of liquid levels illustrate that this layer production fluid is higher, and are moisture higher, in short 3 days, liquid level just has more obviously and descends, and has moisturely also descended 7.6%; After closing No. 2 floor, this well production descends day by day, drop to production fluid 6t/d in 4 days, then close to down-hole gross sample device, liquid level is taken out production all near pump is hung, and well head is moisture to be followed successively by 88.6%, 90.3%, 84.5%, 76.7%, 77.1%, being stabilized at last about 77%, is the first and the 3rd interval in conjunction with above data judging plugged zone.
Can see Table three by sample analysis to the high water-cut well regulation effect:
| Pound sign | The condition of production before the measure | Administer the back condition of production | Difference | ||||||
| Production fluid (t/d) | Produce oil (t/d) | Moisture (%) | Production fluid (t/d) | Produce oil (t/d) | Moisture (%) | Liquid (t/d) falls | Increase oil (t/d) | Precipitation (%) | |
| East 3-fourth 7 | ?138 | ?5 | ?96.4 | ?45 | ?10 | ?77.8 | ?93 | ?5 | ??18.6 |
| North 1-50-550 | ?109 | ?2 | ?98.2 | ?21 | ?3 | ?85.7 | ?88 | ?1 | ??12.5 |
Therefore, product is asked in water detection because the employing such scheme is taken a sample, and sampling is accurate, high efficiency, and cost is low.
Claims (3)
1, producing well comprises packer (1), sampler (2) at production status hypocavate sampling water detection generating method, it is characterized in that:
A, the long-pending 0.01m that is tries to please
3--0.03m
3Join and produce sampler (2) and packer (1) several place in the tested stratum at interval, facing two-stage packer (1) spacing mutually is 3.3～3.5m, thickness of interlayer is 0.8～50m;
B, be equipped with the import and export switch of liquid on the sampler that is equipped with the memory-type pressure meter (2), this switch links to each other with motor or initiator by electronic circuit board control, and the sampler (2) that electronic circuit board is provided with each layer is set to the different shut-in times;
C, under the ordinary production state liquid sampler of flowing through, import and export by the sampler (2) that electronic circuit board control motor or initiator are closed Different Strata by the time of predetermined set;
D, trip out down-hole string, take out to join and produce the liquid of collecting in the sampler (2) and carry out sample examination.
2, producing well according to claim 1 is at production status hypocavate sampling water detection generating method, and it is characterized in that: fixedly cavate sampler (2) can be substituted by the retrievable type sampling cavity.
3, producing well according to claim 1 is at production status hypocavate sampling water detection generating method, and it is characterized in that: output can be calculated by diminishing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031573770A CN1317484C (en) | 2003-09-19 | 2003-09-19 | Cavity water sampling and generating method for oil well in production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031573770A CN1317484C (en) | 2003-09-19 | 2003-09-19 | Cavity water sampling and generating method for oil well in production |
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| Publication Number | Publication Date |
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| CN1490494A true CN1490494A (en) | 2004-04-21 |
| CN1317484C CN1317484C (en) | 2007-05-23 |
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| CNB031573770A Expired - Fee Related CN1317484C (en) | 2003-09-19 | 2003-09-19 | Cavity water sampling and generating method for oil well in production |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2462911A (en) * | 2008-09-02 | 2010-03-03 | Schlumberger Holdings | Pressure testing a geological formation |
| CN101929335A (en) * | 2009-06-18 | 2010-12-29 | 普拉德研究及开发股份有限公司 | The concentrated sampling of formation fluid |
| CN102425405A (en) * | 2011-09-23 | 2012-04-25 | 武汉市欧赛石油技术开发有限公司 | Stratified pressure testing method of eccentric water distribution well in oilfield |
| CN101251010B (en) * | 2007-02-06 | 2013-01-23 | 哈利伯顿能源服务公司 | Single phase fluid sampling apparatus and method for use of same |
| CN104100234A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Staged simultaneous sampling and water exploration pipe column for multi-stage fractured horizontal well and working method of staged simultaneous sampling and water exploration pipe column |
| CN104213908A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Underground storage type flow and water content monitor |
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
| CN109209364A (en) * | 2018-08-16 | 2019-01-15 | 宋协翠 | Separate-layer production string underground oil sampling device |
| CN111852468A (en) * | 2020-08-07 | 2020-10-30 | 核工业北京化工冶金研究院 | Single-well multilayer sampling device for ground leaching well site |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2383972Y (en) * | 1999-05-31 | 2000-06-21 | 阜新市石油工具厂 | Once plugging tubular column for exploration and stopping water |
| CN2479211Y (en) * | 2001-05-17 | 2002-02-27 | 新疆石油管理局采油工艺研究院 | Water finding pipe string |
-
2003
- 2003-09-19 CN CNB031573770A patent/CN1317484C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251010B (en) * | 2007-02-06 | 2013-01-23 | 哈利伯顿能源服务公司 | Single phase fluid sampling apparatus and method for use of same |
| GB2462911A (en) * | 2008-09-02 | 2010-03-03 | Schlumberger Holdings | Pressure testing a geological formation |
| GB2462911B (en) * | 2008-09-02 | 2011-05-25 | Schlumberger Holdings | Methods and apparatus to perform pressure testing of geological formations |
| US8015869B2 (en) | 2008-09-02 | 2011-09-13 | Schlumberger Technology Corporation | Methods and apparatus to perform pressure testing of geological formations |
| CN101929335B (en) * | 2009-06-18 | 2016-02-03 | 普拉德研究及开发股份有限公司 | The concentrated sampling of formation fluid |
| CN101929335A (en) * | 2009-06-18 | 2010-12-29 | 普拉德研究及开发股份有限公司 | The concentrated sampling of formation fluid |
| CN102425405A (en) * | 2011-09-23 | 2012-04-25 | 武汉市欧赛石油技术开发有限公司 | Stratified pressure testing method of eccentric water distribution well in oilfield |
| CN102425405B (en) * | 2011-09-23 | 2014-03-19 | 武汉市欧赛石油技术开发有限公司 | Stratified pressure testing method of eccentric water distribution well in oilfield |
| CN104100234A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Staged simultaneous sampling and water exploration pipe column for multi-stage fractured horizontal well and working method of staged simultaneous sampling and water exploration pipe column |
| CN104100234B (en) * | 2013-04-03 | 2016-12-28 | 中国石油天然气股份有限公司 | Staged simultaneous sampling and water exploration pipe column for multi-stage fractured horizontal well and working method of staged simultaneous sampling and water exploration pipe column |
| CN104213908A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Underground storage type flow and water content monitor |
| CN106677736A (en) * | 2017-01-19 | 2017-05-17 | 天津昱利赢石油科技有限公司 | Movable shaft dynamic water exploration and plugging device |
| CN109209364A (en) * | 2018-08-16 | 2019-01-15 | 宋协翠 | Separate-layer production string underground oil sampling device |
| CN109209364B (en) * | 2018-08-16 | 2022-10-28 | 宋协翠 | Underground oil sampling device for layered oil production pipe column |
| CN111852468A (en) * | 2020-08-07 | 2020-10-30 | 核工业北京化工冶金研究院 | Single-well multilayer sampling device for ground leaching well site |
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| CN1317484C (en) | 2007-05-23 |
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Granted publication date: 20070523 Termination date: 20120919 |