CN104453862A - Method and device for judging position of test and regulation instrument in pit - Google Patents
Method and device for judging position of test and regulation instrument in pit Download PDFInfo
- Publication number
- CN104453862A CN104453862A CN201410733429.1A CN201410733429A CN104453862A CN 104453862 A CN104453862 A CN 104453862A CN 201410733429 A CN201410733429 A CN 201410733429A CN 104453862 A CN104453862 A CN 104453862A
- Authority
- CN
- China
- Prior art keywords
- measurement
- permanent magnet
- instrument device
- adjustment instrument
- flow regulator
- 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.)
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
- E21B47/092—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting magnetic anomalies
Abstract
The invention discloses a method and device for judging the position of a test and regulation instrument in a pit. The method comprises the following steps: a set of permanent magnets are mounted on each water distributor in the pit, and meanwhile, a magnetic detection assembly is mounted on the test and regulation instrument; when the test and regulation instrument enters the signal range of the permanent magnets, a signal is fed back to the ground through the magnetic detection assembly on the test and regulation instrument, and then an operator on the ground can accurately know the accurate position of the test and regulation instrument in the pit. The device is simple in structure, low in cost and convenient to operate; when the water distributor is tested and regulated, the positioning precision is high, a packer in the pit cannot be mistakenly identified as the water distributor, the test and regulation instrument can be accurately positioned in the position of the water distributor needed to be tested and regulated in one time, and the error test and regulation operation is avoided; the test and regulation efficiency of the water distributor in the pit is greatly improved; the existing interlayer spacing of more than 20 meters can be reduced to be about 5 meters, the waterflooding displacement effect can be improved, and the raw oil recovery rate can be increased; favorable conditions are created for development of a fine separate zone waterflooding technology for an oil field.
Description
Technical field
the present invention relates to a kind of measurement and adjustment instrument device at the decision method of down well placement and device, belong to downhole measurement adjusting technical field.
Background technology
when the work such as stratified flow rate test, adjustment is carried out in oil field, need with cable, measurement and adjustment instrument device to be transferred in well, and ensure that measurement and adjustment instrument device is positioned at specified altitude assignment above tune layer position to be measured.Positioning step on existing injection well downhole flow regulator can only be unidirectional spacing, when leaves injection well downhole flow regulator when can not judge that measurement and adjustment instrument device oppositely moves.Affect by cable elastic deformation, under not having other identification characteristics situation, when not knowing that instrument has just left injection well downhole flow regulator, encoder count is how many, also just cannot know measurement and adjustment instrument device leave injection well downhole flow regulator after accurate location, depth test error is larger.When the adjacent layer distance of positions is from time less, easily occur stop place mistake, the situation of other layer of position being carried out to mistake adjustment and test occurs.Therefore, current interlamellar spacing, generally more than 20 meters, cannot reduce further, limits the development of the meticulous water injection technology in oil field, can not meet field operations needs.
Summary of the invention
the object of the invention is to, the decision method of a kind of measurement and adjustment instrument device in down well placement and device are provided, interlamellar spacing can be reduced further, to meet the development of the meticulous water injection technology in oil field.
technical scheme of the present invention:
a kind of measurement and adjustment instrument device is at the decision method of down well placement, the method installs one group of permanent magnet on each injection well downhole flow regulator of down-hole, on measurement and adjustment instrument device, magnetic detection assembly is installed simultaneously, when measurement and adjustment instrument device enters the range of signal of permanent magnet by the magnetic detection assembly on measurement and adjustment instrument device by signal feedback to ground, make ground handling operator accurately know the accurate location of measurement and adjustment instrument device in down-hole.
aforementioned measurement and adjustment instrument device is in the decision method of down well placement, described one group of permanent magnet is made up of at least one permanent magnet, the arrangement mode of the permanent magnet quantity on each injection well downhole flow regulator or permanent magnet is different, different permanent magnet quantity or the arrangement of permanent magnet represent different injection well downhole flow regulators, ground handling operator according to feedback different signals accurately know measurement and adjustment instrument device in down-hole a certain accurate location determining injection well downhole flow regulator.
aforementioned measurement and adjustment instrument device is in the decision method of down well placement, and described ground handling operator leaves the accurate location after injection well downhole flow regulator in conjunction with the ground counter determination measurement and adjustment instrument device of cable length again by the magnetic signal of feedback.
by the measurement and adjustment instrument device down well placement decision maker that preceding method is formed, comprise the permanent magnet be located on each layer injection well downhole flow regulator in down-hole and the magnetic detection assembly be located on measurement and adjustment instrument device; Measurement and adjustment instrument device is connected with ground monitoring device through cable.
in aforementioned measurement and adjustment instrument device down well placement decision maker, described injection well downhole flow regulator is the annulus assembly that non-magnet material is made, and permanent magnet end face is concordant with injection well downhole flow regulator inner ring surface.
in aforementioned measurement and adjustment instrument device down well placement decision maker, the permanent magnet quantity on described each layer injection well downhole flow regulator is corresponding with the injection well downhole flow regulator place number of plies.
in aforementioned measurement and adjustment instrument device down well placement decision maker, described each layer injection well downhole flow regulator is provided with equal number permanent magnet, and the permanent magnet arrangement mode on each layer injection well downhole flow regulator is different.
in aforementioned measurement and adjustment instrument device down well placement decision maker, described permanent magnet arrangement mode circumferentially arrayed, circumference array comprises at least one circumference, is eachly circumferentially at least provided with a permanent magnet.
compared with prior art, structure of the present invention is simple, cost is low, easy to operate.When surveying water flow regulator, positioning precision is high, the packer of down-hole can not be mistakenly identified as injection well downhole flow regulator, can be distinguished the position of different layers injection well downhole flow regulator by different magnetic signals, disposable measurement and adjustment instrument device can be positioned at accurately the required injection well downhole flow regulator position surveying tune, avoid occurring surveying to adjust operating by mistake.Efficiency is adjusted in the survey that significantly improve downhole water flow regulator.Due to accurate positioning of the present invention, error is little, existing layer spacing more than 20 meters can be shortened to about 5 meters, improve displacement of reservoir oil by filling water effect, improves oil recovery factor.For the development of the meticulous separate zone waterflooding technology in oil field creates advantage.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention.
being labeled as in accompanying drawing: 1-injection well downhole flow regulator, 2-permanent magnet, 3-measurement and adjustment instrument device, 4-magnetic detection assembly, 5-cable, 6-positioning step, 7-packer.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
a kind of measurement and adjustment instrument device is at the decision method of down well placement, as shown in Figure 1: the method installs one group of permanent magnet on each injection well downhole flow regulator of down-hole, on measurement and adjustment instrument device, magnetic detection assembly is installed simultaneously, when measurement and adjustment instrument device enters the range of signal of permanent magnet by the magnetic detection assembly on measurement and adjustment instrument device by signal feedback to ground, make ground handling operator accurately know the accurate location of measurement and adjustment instrument device in down-hole.One group of permanent magnet is made up of at least one permanent magnet, the arrangement mode of the permanent magnet quantity on each injection well downhole flow regulator or permanent magnet is different, different permanent magnet quantity or the arrangement of permanent magnet represent different injection well downhole flow regulators, ground handling operator according to feedback different signals accurately know measurement and adjustment instrument device in down-hole a certain accurate location determining injection well downhole flow regulator.Ground handling operator leaves the accurate location after injection well downhole flow regulator in conjunction with the ground counter determination measurement and adjustment instrument device of cable length again by the magnetic signal of feedback, and verifies the reliability of feedback data.
by the measurement and adjustment instrument device down well placement decision maker that preceding method is formed, as shown in Figure 1, the permanent magnet 2 be located on each layer injection well downhole flow regulator 1 in down-hole and the magnetic detection assembly 4 be located on measurement and adjustment instrument device 3 is comprised; Measurement and adjustment instrument device 3 is connected with ground monitoring device through cable 5.The annulus assembly that injection well downhole flow regulator 1 is made for non-magnet material, permanent magnet 2 end face is concordant with injection well downhole flow regulator inner ring surface.Permanent magnet 2 quantity on each layer injection well downhole flow regulator 1 is corresponding with the injection well downhole flow regulator 1 place number of plies.Each layer injection well downhole flow regulator 1 is provided with equal number permanent magnet 2, and permanent magnet 2 arrangement mode on each layer injection well downhole flow regulator 1 is different.Permanent magnet 2 arrangement mode circumferentially arrayed, circumference array comprises at least one circumference, is eachly circumferentially at least provided with a permanent magnet 2.
Embodiment
during concrete enforcement, as shown in Figure 1, in the appropriate location of injection well downhole flow regulator 1, permanent magnet 2 is installed, provides specific magnetic signal source to identify as injection well downhole flow regulator.In measurement and adjustment instrument device 3, magnetic detection assembly 4(is installed as hall device in relevant position), when magnetic detection assembly and permanent magnet nearest time, can id signal be recorded.When measurement and adjustment instrument device leaves injection well downhole flow regulator, id signal rapidly disappears.Because injection well downhole flow regulator quantity in well is datum, according to sequence id signal being detected, then in conjunction with ground counter when injection well downhole flow regulator (known just left cable length) of cable length, accurately can control the present position of measurement and adjustment instrument device.Such as: go into the well from the top down in process, second time id signal detected after, then on carry 2 meters, show that now measurement and adjustment instrument device is positioned at 2 meters of above second layer injection well downhole flow regulator.After adopting this technology, interlamellar spacing can be shortened to about 5 meters, meet the meticulous waterflooding requirement of layering, improve displacement of reservoir oil by filling water effect, improve oil recovery factor.As required, also can adopt different magnet array modes to the injection well downhole flow regulator of diverse location, realize the absolute identification of certain layer of injection well downhole flow regulator.Such as: first floor injection well downhole flow regulator fills 1 magnet, second layer injection well downhole flow regulator fills 2 magnet, and third layer injection well downhole flow regulator fills 3 magnet, and to analogize, the quantity of different layers magnet is corresponding with the number of plies.When two id signals to be detected simultaneously, representing measurement and adjustment instrument device position is second layer injection well downhole flow regulator place.The packer 7 of down-hole can not be mistakenly identified as injection well downhole flow regulator 1 by the present invention.
the present invention also can install multiple permanent magnet on each injection well downhole flow regulator, is distinguished by different arrangement modes, as adopted one or more circumference array; Permanent magnet end face need concordant with injection well downhole flow regulator inner surface (or adopting not magnetic conduction injection well downhole flow regulator), prevents magnetic signal short circuit; Measurement and adjustment instrument device need increase magnetic detection assembly, could realize location recognition function.
Claims (8)
1. a measurement and adjustment instrument device is at the decision method of down well placement, it is characterized in that: the method installs one group of permanent magnet on each injection well downhole flow regulator of down-hole, on measurement and adjustment instrument device, magnetic detection assembly is installed simultaneously, when measurement and adjustment instrument device enters the range of signal of permanent magnet by the magnetic detection assembly on measurement and adjustment instrument device by signal feedback to ground, make ground handling operator accurately know the accurate location of measurement and adjustment instrument device in down-hole.
2. according to claim 1 measurement and adjustment instrument device at the decision method of down well placement, it is characterized in that: described one group of permanent magnet is made up of at least one permanent magnet, the arrangement mode of the permanent magnet quantity on each injection well downhole flow regulator or permanent magnet is different, different permanent magnet quantity or the arrangement of permanent magnet represent different injection well downhole flow regulators, ground handling operator according to feedback different signals accurately know measurement and adjustment instrument device in down-hole a certain accurate location determining injection well downhole flow regulator.
3. measurement and adjustment instrument device, at the decision method of down well placement, is characterized in that according to claim 2: described ground handling operator leaves the accurate location after injection well downhole flow regulator in conjunction with the ground counter determination measurement and adjustment instrument device of cable length again by the magnetic signal of feedback.
4., by the measurement and adjustment instrument device down well placement decision maker that method described in the arbitrary claim of claims 1 to 3 is formed, it is characterized in that: comprise the permanent magnet (2) be located on each layer injection well downhole flow regulator (1) in down-hole and the magnetic detection assembly (4) be located on measurement and adjustment instrument device (3); Measurement and adjustment instrument device (3) is connected with ground monitoring device through cable (5).
5. measurement and adjustment instrument device down well placement decision maker according to claim 4, it is characterized in that: the annulus assembly that described injection well downhole flow regulator (1) is made for non-magnet material, permanent magnet (2) end face is concordant with injection well downhole flow regulator inner ring surface.
6. measurement and adjustment instrument device down well placement decision maker according to claim 5, is characterized in that: permanent magnet (2) quantity on described each layer injection well downhole flow regulator (1) is corresponding with injection well downhole flow regulator (1) the place number of plies.
7. measurement and adjustment instrument device down well placement decision maker according to claim 5, is characterized in that: described each layer injection well downhole flow regulator (1) is provided with equal number permanent magnet (2), and permanent magnet (2) arrangement mode on each layer injection well downhole flow regulator (1) is different.
8. measurement and adjustment instrument device down well placement decision maker according to claim 7, it is characterized in that: described permanent magnet (2) arrangement mode circumferentially arrayed, circumference array comprises at least one circumference, is eachly circumferentially at least provided with a permanent magnet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733429.1A CN104453862B (en) | 2014-12-05 | 2014-12-05 | Decision method and device of a kind of measurement and adjustment instrument device in down well placement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410733429.1A CN104453862B (en) | 2014-12-05 | 2014-12-05 | Decision method and device of a kind of measurement and adjustment instrument device in down well placement |
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| Publication Number | Publication Date |
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| CN104453862A true CN104453862A (en) | 2015-03-25 |
| CN104453862B CN104453862B (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410733429.1A Active CN104453862B (en) | 2014-12-05 | 2014-12-05 | Decision method and device of a kind of measurement and adjustment instrument device in down well placement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288613A (en) * | 2017-06-28 | 2017-10-24 | 贵州航天凯山石油仪器有限公司 | It is a kind of to judge the method and device that downhole measurement adjusting instrument is reliably docked with injection well downhole flow regulator |
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| CN201037410Y (en) * | 2007-04-24 | 2008-03-19 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Down-hole pipe column stress and displacement detecting device |
| CN201991523U (en) * | 2011-02-25 | 2011-09-28 | 中国石油集团川庆钻探工程有限公司 | Magnetic induction rubber plug indicator for cement head |
| CN102777158A (en) * | 2012-07-06 | 2012-11-14 | 西南石油大学 | Testing and adjusting linkage system and operating process thereof |
| CN103987919A (en) * | 2011-12-21 | 2014-08-13 | 韦尔泰克有限公司 | Downhole mapping system |
| WO2014139985A1 (en) * | 2013-03-11 | 2014-09-18 | Welltec A/S | A completion component with position detection |
-
2014
- 2014-12-05 CN CN201410733429.1A patent/CN104453862B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201037410Y (en) * | 2007-04-24 | 2008-03-19 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Down-hole pipe column stress and displacement detecting device |
| CN201991523U (en) * | 2011-02-25 | 2011-09-28 | 中国石油集团川庆钻探工程有限公司 | Magnetic induction rubber plug indicator for cement head |
| CN103987919A (en) * | 2011-12-21 | 2014-08-13 | 韦尔泰克有限公司 | Downhole mapping system |
| CN102777158A (en) * | 2012-07-06 | 2012-11-14 | 西南石油大学 | Testing and adjusting linkage system and operating process thereof |
| WO2014139985A1 (en) * | 2013-03-11 | 2014-09-18 | Welltec A/S | A completion component with position detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288613A (en) * | 2017-06-28 | 2017-10-24 | 贵州航天凯山石油仪器有限公司 | It is a kind of to judge the method and device that downhole measurement adjusting instrument is reliably docked with injection well downhole flow regulator |
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| CN104453862B (en) | 2017-07-11 |
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