CN203175508U - Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column - Google Patents
Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column Download PDFInfo
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- CN203175508U CN203175508U CN 201320018008 CN201320018008U CN203175508U CN 203175508 U CN203175508 U CN 203175508U CN 201320018008 CN201320018008 CN 201320018008 CN 201320018008 U CN201320018008 U CN 201320018008U CN 203175508 U CN203175508 U CN 203175508U
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Abstract
The utility model provides a fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column. The tubular column is composed of an inner tubular column body and an outer tubular column body, wherein the inner tubular column body and the outer tubular column body are arranged in an eccentric and sleeved mode and hung on a well opening device, the inner tubular column body is composed of a first oil pipe and an oil well pump which is arranged under the first oil pipe, the outer tubular column body is sequentially connected with a second oil pipe, an exhausting and thin oil mixing packer, a third oil pipe and a gas anchor from top to bottom, through the unique structural design of the exhausting and thin oil mixing packer, thin oil penetrates through an oil sleeve annulus, and flows to the lower portion of the oil well pump to be mixed with crude oil through a longitudinal passageway of a cross bridge type passageway inside the packer, and an effect of mixing the thin oil, reducing viscosity and conducting lifting is achieved. Meanwhile, gas at the bottom of a well is divided by the gas anchor, floats to the lower portion of the packer, enters the annulus between the inner tubular column body and the outer tubular column body through a transverse passageway of the cross bridge type passageway and finally is discharged out of the well through the well opening device, normal work of the fire flooding influenced well is guaranteed, the problem of mixing the thin oil is effectively solved, and residual gas is prevented from damaging an oil well casing pipe.
Description
Technical field
The utility model is about the situ combustion technology in the heavy crude heat extraction field, relates in particular to a kind of fireflood and is imitated the exhaust of well concentric type and mix rare oil recovery flow string.
Background technology
The Liaohe Oil Field viscous crude is owing to its colloid, bitumen content are very high, and is mobile poor, thereby the exploitation difficulty is bigger, so adopt the steam soak mode to develop more; But along with increasing of steam soak round, the steam soak anaphase effect is bad, therefore adopts the fireflood technology as mining type at present in Liaohe Oil Field promotion oil recovery factory.
After fireflood notes vapour well injects a large amount of compressed air, burn in the down-hole, the heat heating viscous crude that the burning back discharges, driving crude oil enters the fireflood producing well, and then carries out lifting production.But along with increasing of the residual gas in burning back, most of gas enters producing well, causes to be imitated producing well shaft bottom vapour amount and increase, and a day capacity reaches 20000-30000m
3Cause from oil jacket also empty thin oil blending visbreaking mode can't carry out, thereby cause the producing well can't ordinary production.In addition, the gas after the burning contains a large amount of CO, CO
2, NO, NO
2And N
2Deng gas, these gases are under high temperature, high pressure conditions, and the heavy corrosion sleeve pipe greatly reduces application life of oil well.
Thus, the inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of fireflood and is imitated the exhaust of well concentric type and mix rare oil recovery flow string, to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of fireflood to be imitated the exhaust of well concentric type to mix rare oil recovery flow string, can realize mixing thin oil from the oil jacket annular space, reduces reducing crude oil viscosity, to guarantee carrying out smoothly of produced on-site; Simultaneously, guarantee that a large amount of gases in shaft bottom are discharged smoothly, prevent combustion residue gas attack sleeve pipe, to prolong oil well application life.
The purpose of this utility model is achieved in that a kind of fireflood is imitated the exhaust of well concentric type and mixed rare oil recovery flow string, and described oil recovery flow string is by interior tubing string and outer tubing string sheathed and that hang on respectively on the wellhead equipment constitute with one heart;
Tubing string is made of the oil well pump that first oil pipe and its below arrange in described, and first oil pipe hangs on the little four-way of wellhead equipment by screw thread;
From top to bottom be linked in sequence second oil pipe, exhaust of described outer tubing string mixed rare packer, the 3rd oil pipe and gas anchor; Described second oil pipe hangs on the big four of wellhead equipment by screw thread;
Described exhaust is mixed rare packer and is included top connection and lower contact, is connected to the interlayer tubing string of a closed at both ends between the described upper and lower joint; Described interlayer tubing string is made of an exterior central tube and the sheathed inner central tube in its internal clearance, described inner central tube circumferentially is interval with a plurality of flange parts on the medium position edge of axial direction, described flange part outer wall contacts with the inner wall sealing of exterior central tube, and each flange part outer wall is provided with the open-work with the inner central tube conducting; Described exterior central tube is provided with the through hole with the corresponding connection of described open-work; Exterior central tube tube wall below described through hole is arranged with erection device, and the outer wall of described erection device contacts with the oil well casing inwall; The erection device upside is provided with slip spider and opening a plurality of slips up; Be arranged with the cone that radial dimension is downward convergent on the exterior central tube tube wall of described slip spider top, described cone is fixed on the tube wall of exterior central tube by safety pin; Between cone and top connection, be provided with a plurality of packing elements that are set in distance and spacer ring; Be provided with first perforation with the interlayer conducting of interlayer tubing string in described top connection; Be provided with second perforation with the interlayer conducting in described inner central tube bottom.
In a preferred embodiments of the present utility model, the bottom of described exterior central tube is along the track groove that is circumferentially with control erection device shift position; Described track groove comprises backstop groove and the locating slot that is located on the exterior central tube outside wall surface and is correspondingly set up and down; The backstop groove is made of serrated slot; Sawtooth arranges towards the locating slot direction; Locating slot is by with the exterior central tube axially parallel and be a plurality of long track and the short track that circumferential interval arranges and constitute; Spacer portion width between described each long and short track is identical with the width of each sawtooth, and crown and the spacer portion of described sawtooth are oppositely arranged, and the top of each spacer portion is provided with the inclined-plane opposite with the sawtooth teeth directional.
In a preferred embodiments of the present utility model, described erection device comprises the slip ring sleeve that is arranged on the exterior central tube outer wall and is embedded a plurality of brake pads in slip ring sleeve, is provided with stage clip between each brake pad inwall and the exterior central tube outer wall; The outer wall of described each brake pad contacts with the oil well casing inwall; Also be provided with slip ring in the described slip ring sleeve, slip ring is provided with the slip ring pin; Described slip ring pin is slidingly installed in described long track or the short track.
In a preferred embodiments of the present utility model, described each brake pad inwall is provided with blind hole, and the top of described stage clip is arranged in the blind hole.
In a preferred embodiments of the present utility model, described each brake pad inwall is provided with two or three stage clips.
In a preferred embodiments of the present utility model, be respectively equipped with extension spring between described a plurality of slips, a plurality of slips hold together tight by extension spring and are posted by on the outer wall of exterior central tube.
In a preferred embodiments of the present utility model, the diameter of described first oil pipe is 73mm; The diameter of described second oil pipe and the 3rd oil pipe is 114mm.
From the above mentioned, fireflood of the present utility model is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, the unique texture of mixing the thin oil packer by optimal design and the exhaust of tubing string designs, realized thin oil is mixed between the oil jacket annular space, flow under the oil well pump and with crude oil via the vertical passage of packer internal chiasma passageway bridge and to mix, reach the effect of mixing rare viscosity reduction lifting; Downhole gas is by the separation of gas anchor simultaneously, float to the packer bottom, and enter into annular space between the inside and outside tubing string by intersecting the interconnection of passageway bridge, discharge outside the well by wellhead equipment at last, not only efficiently solve and mix the thin oil problem, and avoided the infringement of residual gas to oil well casing.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: for the structural representation that rare oil recovery flow string is mixed in the exhaust of well concentric type is imitated in the utility model fireflood.
Fig. 2: the structural representation of mixing rare packer for exhaust in the utility model.
Fig. 3 A: the inner central tube structural representation of mixing rare packer for exhaust in the utility model.
Fig. 3 B: the inner central tube cross-sectional structure schematic diagram of mixing rare packer for exhaust in the utility model.
Fig. 4: the internal chiasma passageway bridge structural representation of mixing rare packer for exhaust in the utility model.
Fig. 5: be the structural representation of track groove in the utility model.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
As shown in Figure 1, the utility model proposes a kind of fireflood and imitated the exhaust of well concentric type and mix rare oil recovery flow string 100, described oil recovery flow string 100 is by interior tubing string B and outer tubing string A sheathed and that hang on respectively on the wellhead equipment 9 constitute with one heart;
Tubing string B is made of the oil well pump B2 that the first oil pipe B1 and its below arrange in described, and the first oil pipe B1 hangs on by screw thread on the little four-way of wellhead equipment, and in the present embodiment, the diameter of the described first oil pipe B1 is 73mm;
Described outer tubing string A's second oil pipe A1 from top to bottom has been linked in sequence, rare packer A2, the 3rd oil pipe A3 and gas anchor A4 are mixed in exhaust; The described second oil pipe A1 hangs on the big four of wellhead equipment by screw thread; In the present embodiment, the diameter of the described second oil pipe A1 and the 3rd oil pipe A3 is 114mm;
As shown in Figure 2, described exhaust is mixed rare packer A2 and is included top connection 1 and lower contact 2, is connected to the interlayer tubing string 3 of a closed at both ends between the described upper and lower joint 1,2; Described interlayer tubing string 3 is made of an exterior central tube 31 and the sheathed inner central tube 32 in its internal clearance, forms interlayer 33 between the inside and outside central tube; Shown in Fig. 3 A, Fig. 3 B, described inner central tube 32 circumferentially is interval with a plurality of flange parts 321 on the medium position edge of axial direction, described flange part 321 outer walls contact (as shown in Figure 4) with the inner wall sealing of exterior central tube 31, and each flange part 321 outer wall is provided with the open-work 322 with inner central tube 32 conductings; Described exterior central tube 31 is provided with the through hole 311 with described open-work 322 corresponding connections, thus, constitutes interconnection F and vertical passage G between inside and outside central tube 31 and 32, and described interconnection F and vertical passage G form packer internal chiasma passageway bridge; Exterior central tube 31 tube walls below described through hole 311 are arranged with erection device 4, and the outer wall of described erection device 4 contacts with oil well casing 8 inwalls; Erection device 4 upsides are provided with slip spider 5 and opening a plurality of slips 51 up, are respectively equipped with extension spring 52 between described a plurality of slips 51, and a plurality of slips 51 hold together tight by extension spring 52 and are posted by on the outer wall of exterior central tube 31; Be arranged with the cone 6 that radial dimension is downward convergent on exterior central tube 31 tube walls of described slip spider 5 tops, described cone is fixed on the tube wall of exterior central tube by safety pin; Between cone 6 and top connection 1, be provided with a plurality of packing elements that are set in distance 63 and spacer ring 64; Be provided with first perforation 11 with interlayer 33 conductings of interlayer tubing string 3 in described top connection 1; Be provided with second perforation 323 with interlayer 33 conductings in described inner central tube 32 bottoms.
In the present embodiment, the bottom of described exterior central tube 31 is along the track groove 7 that is circumferentially with control erection device 4 shift positions; As shown in Figure 5, described track groove 7 comprises and is located on exterior central tube 31 outside wall surface and the backstop groove 71 that is correspondingly set up and down and locating slot 72; Backstop groove 71 is made of serrated slot; Sawtooth is towards locating slot 72 direction settings; Locating slot 72 is by with the exterior central tube axially parallel and be a plurality of long track 721 and the short track 722 that circumferential interval arranges and constitute; Spacer portion width between described each long and short track is identical with the width of each sawtooth, and crown and the spacer portion of described sawtooth are oppositely arranged, and the top of each spacer portion is provided with the inclined-plane opposite with the sawtooth teeth directional.
Described erection device 4 comprises the slip ring sleeve 41 that is arranged on exterior central tube 31 outer walls and is embedded a plurality of brake pads 42 in slip ring sleeve 41, is provided with stage clip 43 between each brake pad 42 inwall and exterior central tube 31 outer walls; The outer wall of described each brake pad 42 contacts with oil well casing 8 inwalls; Also be provided with slip ring 44 in the described slip ring sleeve 41, slip ring 44 is provided with slip ring pin 45; Described slip ring pin 45 is slidingly installed in described long track 721 or the short track 722.Described each brake pad 42 inwall are provided with blind hole 421, and the top of described stage clip 43 is arranged in the blind hole 421.In the present embodiment, described each brake pad inwall is provided with three stage clips 43.
As shown in Figure 2, exhaust is mixed rare packer A2 and is had long and short two cover tracks, and following fashionable erection device 4 is in the short track, has guaranteed to move on erection device 4 and slip spider 5 are not, and packer can not set being lowered to midway; After packer is lowered into assigned address, on carry a whole set of tubing string, erection device 4 and slip spider 5 are in and oil well sleeve relative static conditions under the frictional force effect of a plurality of brake pads 42 and oil well sleeve 8 inwalls, move on the miscellaneous part; When mentioning long orbital position on the tubing string, transfer tubing string again, parts except erection device 4 and slip spider 5 move down thereupon, open slips 51, after slips 51 is opened, a whole set of tubing string is anchored in the sleeve pipe 8, when tubing string presses down 1012 ton hours, seals such as packing element 63 and spacer ring 64 are compressed complete, realized setting fully of packer.
The exhaust of well concentric type is imitated in described fireflood, and to mix the operating principle of rare oil recovery flow string 100 as follows:
Mixing rare course of work is, as shown in Figure 1 and Figure 2, after the thin oil packer setting is mixed in exhaust, thin oil adds oil jacket annular space (direction shown in the solid arrow Fig. 1) from sleeve valve, thin oil enters the interlayer 33 of interlayer sleeve pipe 3 from first perforation 11 of packer top connection 1, descending through vertical passage G, second perforation 321 by inner central tube 32 bottoms enters inner central tube inside, mix (E point place among Fig. 1) below the oil well pump B2 in flowing at last among the tubing string B and with crude oil, finish the effect of the thin oil blending visbreaking of crude oil.
The exhaust work process is, as shown in Figure 1 and Figure 2, behind the packer setting, gas is finished gas-liquid under the effect of vapour anchor A4 separation (enters gas-liquid mixture by the C point, gas separates and discharge from D, because gas has the come-up effect, therefore floating and gather also empty packer below of oil jacket), gas enters inner central tube 32 inside by interconnection F, by the little annular space that forms between inner central tube 32 and the interior tubing string B up (the dotted arrow direction among Fig. 1), finally discharge outside the well by wellhead equipment.
From the above mentioned, fireflood of the present utility model is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, the unique texture of mixing the thin oil packer by optimal design and the exhaust of tubing string designs, realized thin oil is mixed between the oil jacket annular space, via the vertical passage of packer internal chiasma passageway bridge, mix naturally flowing to downwards under the gravity effect under the oil well pump and with the shaft bottom viscous crude, based on the similar principle that mixes, the overall viscosity of mixed liquid that reduces reaches the effect of mixing rare viscosity reduction lifting; Downhole gas is by the separation of gas anchor simultaneously, float to the packer bottom, and enter into annular space between the inside and outside tubing string by intersecting the interconnection of passageway bridge, discharge outside the well by wellhead equipment at last, not only efficiently solve and mix the thin oil problem, and avoided the infringement of residual gas to oil well casing.Packer internal chiasma passageway bridge described in the utility model, the passage (that is: vertical passage) that wherein mixes thin oil does not intersect, does not disturb mutually with exhaust passage (that is: interconnection), thus, can successfully realize mixing exhaust and mix rare viscosity reduction development scheme, guarantee the produce effects operate as normal of well of fireflood.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (7)
1. a fireflood is imitated the exhaust of well concentric type and mixed rare oil recovery flow string, it is characterized in that: described oil recovery flow string is by interior tubing string and outer tubing string sheathed and that hang on respectively on the wellhead equipment constitute with one heart;
Tubing string is made of the oil well pump that first oil pipe and its below arrange in described, and first oil pipe hangs on the little four-way of wellhead equipment by screw thread;
From top to bottom be linked in sequence second oil pipe, exhaust of described outer tubing string mixed rare packer, the 3rd oil pipe and gas anchor; Described second oil pipe hangs on the big four of wellhead equipment by screw thread;
Described exhaust is mixed rare packer and is included top connection and lower contact, is connected to the interlayer tubing string of a closed at both ends between the described upper and lower joint; Described interlayer tubing string is made of an exterior central tube and the sheathed inner central tube in its internal clearance, described inner central tube circumferentially is interval with a plurality of flange parts on the medium position edge of axial direction, described flange part outer wall contacts with the inner wall sealing of exterior central tube, and each flange part outer wall is provided with the open-work with the inner central tube conducting; Described exterior central tube is provided with the through hole with the corresponding connection of described open-work; Exterior central tube tube wall below described through hole is arranged with erection device, and the outer wall of described erection device contacts with the oil well casing inwall; The erection device upside is provided with slip spider and opening a plurality of slips up; Be arranged with the cone that radial dimension is downward convergent on the exterior central tube tube wall of described slip spider top, described cone is fixed on the tube wall of exterior central tube by safety pin; Between cone and top connection, be provided with a plurality of packing elements that are set in distance and spacer ring; Be provided with first perforation with the interlayer conducting of interlayer tubing string in described top connection; Be provided with second perforation with the interlayer conducting in described inner central tube bottom.
2. fireflood as claimed in claim 1 is imitated the exhaust of well concentric type and mixed rare oil recovery flow string, it is characterized in that: the bottom of described exterior central tube is along the track groove that is circumferentially with control erection device shift position; Described track groove comprises backstop groove and the locating slot that is located on the exterior central tube outside wall surface and is correspondingly set up and down; The backstop groove is made of serrated slot; Sawtooth arranges towards the locating slot direction; Locating slot is by with the exterior central tube axially parallel and be a plurality of long track and the short track that circumferential interval arranges and constitute; Spacer portion width between described each long and short track is identical with the width of each sawtooth, and crown and the spacer portion of described sawtooth are oppositely arranged, and the top of each spacer portion is provided with the inclined-plane opposite with the sawtooth teeth directional.
3. fireflood as claimed in claim 2 is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, it is characterized in that: described erection device comprises the slip ring sleeve that is arranged on the exterior central tube outer wall and is embedded a plurality of brake pads in slip ring sleeve, is provided with stage clip between each brake pad inwall and the exterior central tube outer wall; The outer wall of described each brake pad contacts with the oil well casing inwall; Also be provided with slip ring in the described slip ring sleeve, slip ring is provided with the slip ring pin; Described slip ring pin is slidingly installed in described long track or the short track.
4. fireflood as claimed in claim 3 is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, and it is characterized in that: described each brake pad inwall is provided with blind hole, and the top of described stage clip is arranged in the blind hole.
5. fireflood as claimed in claim 4 is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, and it is characterized in that: described each brake pad inwall is provided with two or three stage clips.
6. fireflood as claimed in claim 1 is imitated the exhaust of well concentric type and mixed rare oil recovery flow string, it is characterized in that: be respectively equipped with extension spring between described a plurality of slips, a plurality of slips hold together tight by extension spring and are posted by on the outer wall of exterior central tube.
7. fireflood as claimed in claim 1 is imitated the exhaust of well concentric type and is mixed rare oil recovery flow string, and it is characterized in that: the diameter of described first oil pipe is 73mm; The diameter of described second oil pipe and the 3rd oil pipe is 114mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018008 CN203175508U (en) | 2013-01-14 | 2013-01-14 | Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018008 CN203175508U (en) | 2013-01-14 | 2013-01-14 | Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175508U true CN203175508U (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320018008 Expired - Lifetime CN203175508U (en) | 2013-01-14 | 2013-01-14 | Fire flooding influenced well concentric type exhausting, thin oil mixing and oil extracting production tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175508U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046908A (en) * | 2013-01-14 | 2013-04-17 | 中国石油天然气股份有限公司 | Concentric type exhausting and blending-light oil production pipe string of fire flooding effect reception well |
| CN104358524A (en) * | 2014-11-17 | 2015-02-18 | 杰瑞能源服务有限公司 | Coiled tubing speed pipe column and liquid draining and gas collecting method |
| CN105239955A (en) * | 2015-10-28 | 2016-01-13 | 中国石油天然气股份有限公司 | Step-by-step unsealing anchor packer for gas well |
-
2013
- 2013-01-14 CN CN 201320018008 patent/CN203175508U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046908A (en) * | 2013-01-14 | 2013-04-17 | 中国石油天然气股份有限公司 | Concentric type exhausting and blending-light oil production pipe string of fire flooding effect reception well |
| CN103046908B (en) * | 2013-01-14 | 2015-10-14 | 中国石油天然气股份有限公司 | Fireflood mixes rare oil recovery flow string by the exhaust of effect well concentric type |
| CN104358524A (en) * | 2014-11-17 | 2015-02-18 | 杰瑞能源服务有限公司 | Coiled tubing speed pipe column and liquid draining and gas collecting method |
| CN105239955A (en) * | 2015-10-28 | 2016-01-13 | 中国石油天然气股份有限公司 | Step-by-step unsealing anchor packer for gas well |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130904 Effective date of abandoning: 20151014 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |