CN102733787A - Plug-in coiled tubing induced-spraying device - Google Patents
Plug-in coiled tubing induced-spraying device Download PDFInfo
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- CN102733787A CN102733787A CN2012102399055A CN201210239905A CN102733787A CN 102733787 A CN102733787 A CN 102733787A CN 2012102399055 A CN2012102399055 A CN 2012102399055A CN 201210239905 A CN201210239905 A CN 201210239905A CN 102733787 A CN102733787 A CN 102733787A
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- coiled tubing
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- seal bar
- tubular column
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Abstract
The invention discloses a plug-in coiled tubing induced-spraying device, which comprises an outer tubular column, a coiled tubing and a coiled tubing injector, wherein the coiled tubing is fed inside the outer tubular column through the coiled tubing injector; a locating seal working barrel is arranged in the outer tubular column; the periphery of the locating seal working barrel is matched with an inner periphery of the outer tubular column in a sealing way; an inserted sealing rod is arranged at the lower end of the coiled tubing; the inserted sealing rod is provided with a through hole communicated with the coiled tubing along the axial direction; and the inserted sealing rod is inserted into the seal work barrel when the coiled tubing injector feeds the coiled tubing downwards to a preset position in the outer tubular column, and the periphery of the inserted sealing rod is matched with the inner periphery of the locating seal working barrel in the sealing way. According to the device, the problems that water seepages at the stratum and the liquid carrying effect of a large-diameter tubular column is not ideal in a gas well test can be solved, and common gas lift induced spraying, production seeking and testing also can be carried out, so as to achieve the multifunctional purpose of the tubular column.
Description
Technical field
The invention belongs to oil gas well formation testing technical field, specifically be meant a kind of plug-in type coiled tubing induced flow device that is used for the examination of oil gas well surveying.
Background technology
At present; Study in the industry at the oil gas well surveying; Coiled tubing is mainly used in low porosity and low permeability reservoir gaslift induced flow operation, under the less situation of not water outlet of stratum or water yield, when gaslift after to a certain degree; Formation fluid is enough to take residue fluid cushion or formation water out of ground, thereby can be in the hope of the stratum production capacity.Water yield is big when the stratum, and formation fluid is not enough to be carried into ground to formation water, will cause the inner hydrops of tubing string like this, can cause back pressure to the stratum on the contrary, from can not asking the true production capacity in stratum or causing asking the product failure.Lean on coiled tubing gaslift discharge opeing, the gaslift activity duration is long, can receive the tubing string size restrictions, and the nitrogen that injects into well also can cause back pressure to the stratum, can't ask accurate output.
Above-mentioned argumentation content purpose is the various aspects of the technology that maybe be relevant with the various aspects of the present invention that below will be described and/or advocate of introducing to the reader; Believe that this argumentation content helps for the reader background information to be provided; To help understanding various aspects of the present invention better; Therefore, should be appreciated that it is to read these argumentations, rather than admit prior art with this angle.
Summary of the invention
The objective of the invention is to avoid deficiency of the prior art and a kind of plug-in type coiled tubing induced flow device is provided; Stratum water outlet when it can solve the examination of oil gas well surveying; The major diameter tubing string is taken the unfavorable problem of liquid effect; Also can carry out conventional gaslift induced flow, ask and produce and test, reach the purpose of the multiple function of one-trip string.
The object of the invention is realized through following technical scheme:
A kind of plug-in type coiled tubing induced flow device is provided; Comprise outer tubing string, coiled tubing, coiled tubing injector, said coiled tubing is sent in the outer tubing string through the coiled tubing injector, is provided with location seal operation tube in the said outer tubing string; The periphery of said location seal operation tube cooperates with the interior week sealing of outer tubing string; The lower end of said coiled tubing is provided with the insertion seal bar, inserts seal bar and is provided with the through hole that is communicated with coiled tubing vertically, outside said coiled tubing injector is sent into coiled tubing downwards in the tubing string during precalculated position; Said insertion seal bar is inserted in the seal operation tube, and the periphery of inserting seal bar cooperates with the interior week sealing of location seal operation tube.
Wherein, said insertion seal bar periphery and location seal operation tube is sealed and matched through sealing ring in interior week.
Wherein, said sealing ring is arranged on the periphery of inserting seal bar.
Wherein, said sealing ring is at least three, is spaced apart and arranged in vertically on the periphery of inserting seal bar.
Wherein, said insertion seal bar is connected with coiled tubing through becoming button.
Wherein, said outer tubing string lower end is provided with the drill stem testing pipe string combination.
Owing to adopted above-mentioned structure; The present invention is provided with location seal operation tube on conventional cylinder pile foundation, cooperate custom-designed coiled tubing to insert seal bar, through inserting the sealing of seal bar realization coiled tubing and outer tube intercolumniation; Stratum water outlet in the time of can solving the examination of oil gas well surveying; The major diameter tubing string is taken the unfavorable problem of liquid effect, also can carry out conventional gaslift induced flow, ask and produce and test, has reached the purpose of the multiple function of one-trip string.
Main effect of the present invention is:
1) location seal operation tube can be followed outer tubing string in advance and is lowered to, and can carry out the coiled tubing gaslift induced flow of routine, tries to achieve the stratum production capacity.
2) take the liquid effect when undesirable when stratum production capacity difference, inserting seal bar, can to get into the seal operation tube inner, thereby reduce the test string internal diameter, improves and take the liquid effect.
Description of drawings
Utilize accompanying drawing that the present invention is described further, but the embodiment in the accompanying drawing do not constitute any restriction of the present invention,, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing for those of ordinary skill in the art.
Fig. 1 is the structural representation of plug-in type coiled tubing induced flow device.
Fig. 2 is the sectional view that inserts seal bar.
Fig. 3 is the sectional view of seal operation tube.
In Fig. 1, include: 1---oil gas well, 2---drill stem testing pipe string combination, 3---insertion seal bar, 4---seal operation tube, 5---outer tubing string, 6---coiled tubing, 7---coiled tubing injector, 8---sealing ring.
The specific embodiment
In order to make those skilled in the art understand technical scheme of the present invention better; Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail; Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
To shown in Figure 3, plug-in type coiled tubing induced flow device of the present invention comprises outer tubing string 5, coiled tubing 6, coiled tubing injector 7 like Fig. 1.To the examination of conventional gas and oil well surveying, said outer tubing string 5 can be drilling rod or oil pipe, and outer tubing string 5 is lowered to oil gas well 1, and said outer tubing string 5 lower ends also are provided with drill stem testing pipe string combination 2.Said coiled tubing 6 is sent in the outer tubing string 5 through coiled tubing injector 7.Be provided with location seal operation tube 4 in the said outer tubing string 5, the periphery of said location seal operation tube 4 cooperates with the interior week sealing of outer tubing string 5, before outer tubing string 5 is lowered to, can earlier location seal operation tube 4 be connected to outer tubing string 5 correct positions.The lower end of said coiled tubing 6 is provided with inserts seal bar 3, and said insertion seal bar 3 can be connected with coiled tubing 6 through becoming button.Said insertion seal bar 3 is provided with the through hole 31 that is communicated with coiled tubing 6 vertically; Outside said coiled tubing injector 7 is sent into coiled tubing 6 downwards in the tubing string 5 during the precalculated position; Said insertion seal bar 3 is inserted in the seal operation tube 4, and the periphery of inserting seal bar 3 cooperates with the interior week sealing of location seal operation tube 4.
Preferably, said insertion seal bar 3 peripheries and location seal operation tube 4 is sealed and matched through sealing ring 8 in interior week.Wherein, said sealing ring 8 is arranged on the periphery of inserting seal bar 3, and said sealing ring 8 is at least three, is spaced apart and arranged in vertically on the periphery of inserting seal bar 3.
Operating principle of the present invention is following:
When the induced flow of needs coiled tubing, can be connected on the coiled tubing inserting seal bar, send coiled tubing to suitable position gaslift induced flow operation through the coiled tubing injector.
If the stratum production capacity is relatively poor or the stratum water yield is big; The internal diameter of outer tubing string is bigger, takes the liquid weak effect, can not ask for the true production capacity in stratum through the coiled tubing gaslift; Can deliver in the seal operation tube of location through coiled tubing this moment with inserting seal bar; Annular space between coiled tubing and the outer tubing string is through inserting sealing ring and the seating nipple sealing on the seal bar like this, because the coiled tubing internal diameter is littler than outer tubing string far away, formation fluid can rise to ground through coiled tubing inside; Can reach for the less well of output and to take the liquid effect preferably, thereby can try to achieve the true production capacity in stratum.
In the present invention, only if clear and definite regulation and qualification are arranged in addition, broad understanding should be done in terms such as term " installation ", " connection ", " linking to each other ", " fixing "; For example, can be fixedly connected, also can be to removably connect; Or connect integratedly, can be directly to link to each other, also can link to each other indirectly through intermediary; Can also refer to the internal communication of two elements, for those of ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
Set forth a lot of details so that make much of the present invention in the top description, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to protection domain of the present invention.
In a word; The above-mentioned preferred implementation though the present invention has given an example should be explained, though those skilled in the art can carry out various variations and remodeling; Only if such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (6)
1. plug-in type coiled tubing induced flow device; Comprise outer tubing string (5), coiled tubing (6), coiled tubing injector (7); Said coiled tubing (6) is sent in the outer tubing string (5) through coiled tubing injector (7); It is characterized in that: be provided with location seal operation tube (4) in the said outer tubing string (5); The periphery of said location seal operation tube (4) cooperates with the interior week sealing of outer tubing string (5); The lower end of said coiled tubing (6) is provided with inserts seal bar (3), inserts seal bar (3) and is provided with the through hole (31) that is communicated with coiled tubing (6) vertically, outside said coiled tubing injector (7) is sent into coiled tubing (6) downwards during the middle precalculated position of tubing string (5); Said insertion seal bar (3) is inserted in the seal operation tube (4), and the periphery of inserting seal bar (3) cooperates with the interior week sealing of location seal operation tube (4).
2. plug-in type coiled tubing induced flow device according to claim 1 is characterized in that: said insertion seal bar (3) periphery is sealed and matched through sealing ring (8) with location seal operation tube (4) in interior week.
3. plug-in type coiled tubing induced flow device according to claim 2 is characterized in that: said sealing ring (8) is arranged on the periphery of inserting seal bar (3).
4. plug-in type coiled tubing induced flow device according to claim 3, it is characterized in that: said sealing ring (8) is at least three, is spaced apart and arranged in vertically on the periphery of inserting seal bar (3).
5. according to each described plug-in type coiled tubing induced flow device in the claim 1 to 4, it is characterized in that: said insertion seal bar (3) is connected with coiled tubing (6) through becoming button.
6. according to each described plug-in type coiled tubing induced flow device in the claim 1 to 4, it is characterized in that: said outer tubing string (5) lower end is provided with drill stem testing pipe string combination (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102399055A CN102733787A (en) | 2012-07-12 | 2012-07-12 | Plug-in coiled tubing induced-spraying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102399055A CN102733787A (en) | 2012-07-12 | 2012-07-12 | Plug-in coiled tubing induced-spraying device |
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| CN102733787A true CN102733787A (en) | 2012-10-17 |
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| CN2012102399055A Pending CN102733787A (en) | 2012-07-12 | 2012-07-12 | Plug-in coiled tubing induced-spraying device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265250A (en) * | 2014-09-17 | 2015-01-07 | 中国海洋石油总公司 | Rapid induced flow completion pipe column for subsurface nitrogen making gas well |
| CN104790916A (en) * | 2015-04-24 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN107304666A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN107304668A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN107630684A (en) * | 2017-08-30 | 2018-01-26 | 中国石油大学(北京) | Coiled tubing gaslift water pumping gas production dynamic process analogy method and device |
| CN110273669A (en) * | 2018-03-14 | 2019-09-24 | 中国石油天然气股份有限公司 | Method for operating a production well |
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| US20090114383A1 (en) * | 2007-11-01 | 2009-05-07 | Yu Lei | Gas lift apparatus for flushing and snubbing well |
| US20090266554A1 (en) * | 2008-04-23 | 2009-10-29 | Conocophillips Company | Smart compressed chamber well optimization system |
| CN101575955A (en) * | 2009-02-27 | 2009-11-11 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Design method of low-pressure gas well swabbing damper |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265250A (en) * | 2014-09-17 | 2015-01-07 | 中国海洋石油总公司 | Rapid induced flow completion pipe column for subsurface nitrogen making gas well |
| CN104790916A (en) * | 2015-04-24 | 2015-07-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN104790916B (en) * | 2015-04-24 | 2017-04-19 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Method for removing gas well accumulated liquid by means of oil jacket pressure balancing method |
| CN107304666A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN107304668A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN107304668B (en) * | 2016-04-22 | 2020-06-23 | 中国石油化工股份有限公司 | Oil and gas production method |
| CN107630684A (en) * | 2017-08-30 | 2018-01-26 | 中国石油大学(北京) | Coiled tubing gaslift water pumping gas production dynamic process analogy method and device |
| CN107630684B (en) * | 2017-08-30 | 2019-07-12 | 中国石油大学(北京) | Coiled tubing gaslift water pumping gas production dynamic process analogy method and device |
| CN110273669A (en) * | 2018-03-14 | 2019-09-24 | 中国石油天然气股份有限公司 | Method for operating a production well |
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Application publication date: 20121017 |