CN103867183A - Transient electromagnetic method through casing water exploration tester - Google Patents
Transient electromagnetic method through casing water exploration tester Download PDFInfo
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- CN103867183A CN103867183A CN201310099699.7A CN201310099699A CN103867183A CN 103867183 A CN103867183 A CN 103867183A CN 201310099699 A CN201310099699 A CN 201310099699A CN 103867183 A CN103867183 A CN 103867183A
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- iron core
- pressing cap
- transient electromagnetic
- electromagnetic method
- water detection
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000001052 transient effect Effects 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims description 28
- 238000013461 design Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 20
- 230000001681 protective effect Effects 0.000 abstract 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005415 magnetization Effects 0.000 description 3
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
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- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a transient electromagnetic method through casing water exploration tester. The transient electromagnetic method through casing water exploration tester comprises an iron core and an outer protective pipe sleeved on the outer side of the iron core, wherein an annular space is formed between the outer protective pipe and the iron core, the annular space is upwards communicated with the upper side of the iron core, and the lower end of the annular space is arranged between the outer protective sleeve and the iron core and is sealed by an O-shaped seal ring. A lower pressing cap is arranged on an annular stage formed on the upper end of the iron core, an upper pressing cap is arranged on the outer side of the lower pressing cap, a support block is arranged on the upper pressing cap, and a spring is arranged in a support block. The lower pressing cap is connected with an adapter joint at the upper side through an internal thread formed in the inner side of the lower pressing cap. A pressing cap is arranged on the annular stage formed on the lower end of the iron core, a support block is arranged on the pressing cap, and the spring is arranged in the support block. A guiding joint is arranged right below the iron core. The transient electromagnetic method through casing water exploration tester solves the problems that the existing cased hole completion production well has difficulty in exploring water and testing; conventional sine wave resistivity test is low in signal to noise ratio and can be affected by external environment to a great extent.
Description
Technical field
The present invention relates to oil exploitation instrument, specifically a kind of transient electromagnetic method is crossed sleeve pipe water detection tester.
Background technology
At present, most of oil gas well in oil field is taked cased hole completion mode.Along with exploitation dynamics progressively strengthens, water detection test is more and more important at mid-late oilfield development.And the water detection measuring technology of applying at present still adopts the modes such as the radio-activity testing of open hole well test employing, due to tested person principle, completion casing and the impact of backfilling cement ring, carry out water detection test in cased hole completion producing well time, exist measuring distance to break, be subject to subsurface environment to affect the problems such as large, can not meet the water detection test request of cased hole completion producing well.Utilizing down-hole resistivity measurement technology to carry out Oil/gas Well water detection test is a kind of practicable solution, but due to the shielding action of sleeve pipe itself, conventionally test signal cannot pass through sleeve pipe and carry out water detection test.Therefore, aspect cased hole completion producing well water detection test, also there is no a kind of suitable technology at present.
In view of this,, for the problems referred to above, propose a kind of transient electromagnetic method reasonable in design and that effectively improve above-mentioned disappearance and cross sleeve pipe water detection tester.
Summary of the invention
The object of the present invention is to provide transient electromagnetic method to cross sleeve pipe water detection tester, solved the water detection of current cased hole completion producing well and tested difficult problem, solved that conventional sinusoidal wave resistivity measurement signal to noise ratio is low, large problem is affected by the external environment.
In order to reach above-mentioned purpose, the present invention has adopted following technical scheme, transient electromagnetic method is crossed sleeve pipe water detection tester, comprise iron core and be enclosed within the outer pillar in iron core outside, described iron core is all offered annulus platform at self upper and lower two ends, between described outer pillar and iron core, forms annular space, and this annular space is upwards communicated with iron core top always, for open type designs, O type circle is set between the lower end position oversheath of this annular space and iron core and seals.
On the annulus platform that described iron core upper end is offered, be provided with lower pressing cap, lower pressing cap arranged outside upper pressing cap, described outer pillar upper end is connected to outside, upper pressing cap lower end.
On described upper pressing cap, be provided with back-up block, back-up block inside arranges spring.
The internal thread that described lower pressing cap is offered by inner side connects the crossover sub of top, and O type circle is set between described lower pressing cap and crossover sub.
On the annulus platform that described iron core lower end is offered, be provided with pressure cap, be provided with back-up block on pressure cap, back-up block inside arranges spring.
The positive lower end of described iron core is provided with guide head.
Compared to prior art, the present invention has following beneficial effect:
(1) for the water detection test of cased hole completion producing well, propose to carry out after sleeve pipe magnetizes the mode of resistivity measurement, solve the water detection of current cased hole completion producing well and tested difficult problem;
(2) take transient electromagnetic method to carry out water detection test, realized the corresponding one by one of the test signal time and space, solved that conventional sinusoidal wave resistivity measurement signal to noise ratio is low, large problem is affected by the external environment.
Accompanying drawing explanation
Fig. 1 is the structural representation that transient electromagnetic method of the present invention is crossed sleeve pipe water detection tester.
In figure: 1. crossover sub; 2.O type circle; 3. upper pressing cap; 4. back-up block; 5. lower pressing cap; 6. outer pillar; 7. iron core; 8.O type circle; 9. spring; 10. guide head.
The specific embodiment
Relevant detailed description of the present invention and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the present invention to be limited.
Referring to accompanying drawing 1, transient electromagnetic method is crossed sleeve pipe water detection tester, comprise iron core 7 and be enclosed within the outer pillar 6 in iron core outside, described iron core is all offered annulus platform at self upper and lower two ends, between described outer pillar and iron core, form annular space, this annular space is upwards communicated with iron core top always, for open type designs, O type circle 8 is set between the lower end position oversheath of this annular space and iron core and seals.On the annulus platform that iron core upper end is offered, be provided with lower pressing cap 5, lower pressing cap arranged outside upper pressing cap 3, described outer pillar upper end is connected to outside, upper pressing cap lower end.On upper pressing cap, be provided with back-up block 4, back-up block inside arranges spring.The internal thread that lower pressing cap is offered by inner side connects the crossover sub 1 of top, and O type circle 2 is set between described lower pressing cap and crossover sub.On the annulus platform that iron core lower end is offered, be provided with pressure cap, be provided with back-up block on pressure cap, back-up block inside arranges spring 9.The positive lower end of iron core is provided with guide head 10.
Cross in resistivity water detection process in transient electromagnetic method, this device is connected in to system bottom, upper end follows instrument to connect by crossover sub.After this instrument being powered by concentric cable, according to electromagnetic induction principle, can around coil, produce magnetic field, complete the magnetization to sleeve pipe.
Transient electromagnetic method water detection tester is mainly taked following technology:
(1) sleeve pipe magnetization technology: in order to eliminate the shielding action of sleeve pipe to electromagnetism test signal, adopt coil method to magnetize sleeve pipe, can be in the situation that small electric flow, reach good sleeve pipe magnetization effect, make instrument be issued to the effect of open hole test in cased hole completion situation.
(2) transient electromagnetic method test: when instrument is tested in down-hole, transmitting DC pulse signal, and take signal at each inter-train pause by instrument induction coil, and there is measuring distance long, be disturbed little advantage.
(3) resistivity water detection test: can draw the resistivity of test zone by induced electromotive force, thereby carry out water detection test.
On structure and composition, instrument is mainly graded and forms with transmission circuit and encapsulation part by sleeve pipe magnetized spot, transmitting and receiving coil, signal conversion and control.
The foregoing is only preferred embodiment of the present invention, non-in order to limit the scope of the claims of the present invention, other use the equivalence of patent spirit of the present invention to change, and all should all belong to the scope of the claims of the present invention.
Claims (6)
1. transient electromagnetic method is crossed sleeve pipe water detection tester, it is characterized in that, comprise iron core and be enclosed within the outer pillar in iron core outside, described iron core is all offered annulus platform at self upper and lower two ends, between described outer pillar and iron core, form annular space, this annular space is upwards communicated with iron core top always, for open type designs, O type circle is set between the lower end position oversheath of this annular space and iron core and seals.
2. transient electromagnetic method according to claim 1 is crossed sleeve pipe water detection tester, it is characterized in that, on the annulus platform that described iron core upper end is offered, is provided with lower pressing cap, lower pressing cap arranged outside upper pressing cap, and described outer pillar upper end is connected to outside, upper pressing cap lower end.
3. transient electromagnetic method according to claim 2 is crossed sleeve pipe water detection tester, it is characterized in that, on described upper pressing cap, is provided with back-up block, and back-up block inside arranges spring.
4. transient electromagnetic method according to claim 2 is crossed sleeve pipe water detection tester, it is characterized in that, the internal thread that described lower pressing cap is offered by inner side connects the crossover sub of top, and O type circle is set between described lower pressing cap and crossover sub.
5. transient electromagnetic method according to claim 1 is crossed sleeve pipe water detection tester, it is characterized in that, on the annulus platform that described iron core lower end is offered, is provided with pressure cap, is provided with back-up block on pressure cap, and back-up block inside arranges spring.
6. transient electromagnetic method according to claim 1 is crossed sleeve pipe water detection tester, it is characterized in that, the positive lower end of described iron core is provided with guide head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310099699.7A CN103867183A (en) | 2012-12-18 | 2013-03-26 | Transient electromagnetic method through casing water exploration tester |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220704962.1 | 2012-12-18 | ||
| CN201220704962 | 2012-12-18 | ||
| CN201310099699.7A CN103867183A (en) | 2012-12-18 | 2013-03-26 | Transient electromagnetic method through casing water exploration tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103867183A true CN103867183A (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320141510 Expired - Fee Related CN203248146U (en) | 2012-12-18 | 2013-03-26 | Transient electromagnetic method sleeve passing water finding detector |
| CN201310099699.7A Pending CN103867183A (en) | 2012-12-18 | 2013-03-26 | Transient electromagnetic method through casing water exploration tester |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320141510 Expired - Fee Related CN203248146U (en) | 2012-12-18 | 2013-03-26 | Transient electromagnetic method sleeve passing water finding detector |
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| CN (2) | CN203248146U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203248146U (en) * | 2012-12-18 | 2013-10-23 | 中国石油化工股份有限公司 | Transient electromagnetic method sleeve passing water finding detector |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558427A (en) * | 1946-05-08 | 1951-06-26 | Schlumberger Well Surv Corp | Casing collar locator |
| US2857451A (en) * | 1952-08-08 | 1958-10-21 | Socony Mobil Oil Co Inc | Case for well logging tools |
| GB839486A (en) * | 1957-06-17 | 1960-06-29 | Houston Oil Field Mat Co Inc | Method of and apparatus for locating anomalies in a well bore |
| US3555409A (en) * | 1969-10-06 | 1971-01-12 | Texaco Inc | Magnetic susceptibility logging system with transmitter and receiver null coils |
| US4440019A (en) * | 1982-05-28 | 1984-04-03 | Marshall W Ray | Free point indicator |
| CN88203346U (en) * | 1988-02-13 | 1988-10-19 | 江汉石油管理局油田开发公司采油工艺研究所 | Locator for connecting hoop |
| CN2122934U (en) * | 1992-06-03 | 1992-11-25 | 华北石油管理局测井公司 | High-frequency electromagnetic oscillating water-holding ratio instrument |
| CN2380686Y (en) * | 1999-07-06 | 2000-05-31 | 盘锦市兴隆台区永明石油新技术服务中心 | Cable-type layerd-detection water-searching instrument |
| CN201083128Y (en) * | 2007-03-26 | 2008-07-09 | 大庆石油学院 | Annular space water detector electrothermal leading head |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN201539248U (en) * | 2009-11-17 | 2010-08-04 | 中国石油天然气集团公司 | Oil field production well electromagnetic logging tool |
| CN203248146U (en) * | 2012-12-18 | 2013-10-23 | 中国石油化工股份有限公司 | Transient electromagnetic method sleeve passing water finding detector |
-
2013
- 2013-03-26 CN CN 201320141510 patent/CN203248146U/en not_active Expired - Fee Related
- 2013-03-26 CN CN201310099699.7A patent/CN103867183A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2558427A (en) * | 1946-05-08 | 1951-06-26 | Schlumberger Well Surv Corp | Casing collar locator |
| US2857451A (en) * | 1952-08-08 | 1958-10-21 | Socony Mobil Oil Co Inc | Case for well logging tools |
| GB839486A (en) * | 1957-06-17 | 1960-06-29 | Houston Oil Field Mat Co Inc | Method of and apparatus for locating anomalies in a well bore |
| US3555409A (en) * | 1969-10-06 | 1971-01-12 | Texaco Inc | Magnetic susceptibility logging system with transmitter and receiver null coils |
| US4440019A (en) * | 1982-05-28 | 1984-04-03 | Marshall W Ray | Free point indicator |
| CN88203346U (en) * | 1988-02-13 | 1988-10-19 | 江汉石油管理局油田开发公司采油工艺研究所 | Locator for connecting hoop |
| CN2122934U (en) * | 1992-06-03 | 1992-11-25 | 华北石油管理局测井公司 | High-frequency electromagnetic oscillating water-holding ratio instrument |
| CN2380686Y (en) * | 1999-07-06 | 2000-05-31 | 盘锦市兴隆台区永明石油新技术服务中心 | Cable-type layerd-detection water-searching instrument |
| CN201083128Y (en) * | 2007-03-26 | 2008-07-09 | 大庆石油学院 | Annular space water detector electrothermal leading head |
| CN101581214A (en) * | 2009-03-23 | 2009-11-18 | 西安石油大学 | Transient electromagnetic logging device in through-casing well |
| CN201539248U (en) * | 2009-11-17 | 2010-08-04 | 中国石油天然气集团公司 | Oil field production well electromagnetic logging tool |
| CN203248146U (en) * | 2012-12-18 | 2013-10-23 | 中国石油化工股份有限公司 | Transient electromagnetic method sleeve passing water finding detector |
Non-Patent Citations (2)
| Title |
|---|
| 宋汐瑾: "生产井瞬变电磁探测理论与方法研究", 《西安电子科技大学博士学位论文》, 12 July 2012 (2012-07-12) * |
| 张群: "水平井找水测试技术发展现状与展望", 《仪表电器》, vol. 30, no. 4, 30 April 2011 (2011-04-30) * |
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| Publication number | Publication date |
|---|---|
| CN203248146U (en) | 2013-10-23 |
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Application publication date: 20140618 |
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