CN103670329B - Tube-in-tube injecting-steam viscous crude oil well mouth device - Google Patents
Tube-in-tube injecting-steam viscous crude oil well mouth device Download PDFInfo
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- CN103670329B CN103670329B CN201310387328.9A CN201310387328A CN103670329B CN 103670329 B CN103670329 B CN 103670329B CN 201310387328 A CN201310387328 A CN 201310387328A CN 103670329 B CN103670329 B CN 103670329B
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Abstract
<b>the present invention relates to</b><b>horizontal well heavy crude heat extraction operating mode steam injection technology field, being a kind of tube-in-tube injecting-steam viscous crude oil well mouth device, this tube-in-tube injecting-steam viscous crude oil well mouth device includes little four-way, one-level big four, two grades of big fours, three grades of big fours, upper master control gate valve, one-level crossover flange, lower master control gate valve and two grades of crossover flanges；The internal diameter of little four-way is less than the internal diameter of one-level big four, and the internal diameter of one-level big four is less than the internal diameter of two grades of big fours.Present configuration is reasonable and compact, easy to use, the three place's annular spaces formed between three grades of tubing hanger structures can select steam injection or a certain passage steam injection simultaneously according to the requirement of steam injection and lifting rate, meet the Multipoint Uniform steam injection of thick oil horizontal well, simultaneously, primary oil pipe hanger, two grades of tubing hangers and three grades of tubing hangers are both designed as mandrel type suspended structure, can meet the omnidistance Operating Pressure that tubing string removes and changes, and the sealing property of rigid seal circle is safe and reliable, Flange joint is easy to install.</b>
Description
Technical field
The present invention relates to horizontal well heavy crude heat extraction operating mode steam injection technology field, be a kind of tube-in-tube injecting-steam viscous crude oil well mouth device.
Background technology
What current thick oil horizontal well wellhead assembly adopted is parallel major-minor dual string structure, 2 steam injections of A, B, owing to horizontal segment is longer, there is the problem that the motion of horizontal segment viscous crude is uneven, additionally, current wellhead column hang cannot implement Operating Pressure, and the structure of double; two parallel tubing strings also cannot be installed in operation process and use blowout hookup, it is impossible to guarantees the safety of construction.
Summary of the invention
The invention provides a kind of tube-in-tube injecting-steam viscous crude oil well mouth device, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem that the motion of horizontal segment viscous crude is uneven and cannot guarantee the safety constructed.
The technical scheme is that and realized by following measures: a kind of tube-in-tube injecting-steam viscous crude oil well mouth device, including little four-way, one-level big four, two grades of big fours, three grades of big fours, upper master control gate valve, one-level crossover flange, lower master control gate valve and two grades of crossover flanges；nullThe internal diameter of little four-way is less than the internal diameter of one-level big four，The internal diameter of one-level big four is less than the internal diameter of two grades of big fours，The internal diameter of two grades of big fours is less than the internal diameter of three grades of big fours，The upper end of the lower end of little four-way and upper master control gate valve is fixedly installed togather，The lower end of upper master control gate valve and the upper end of one-level crossover flange are fixedly installed togather，The upper end of the lower end of one-level crossover flange and one-level big four is fixedly installed togather，The upper end of the lower end of one-level big four and lower master control gate valve is fixedly installed togather，The lower end of lower master control gate valve and the upper end of two grades of big fours are fixedly installed togather，The upper end of the lower end of two grades of big fours and two grades of crossover flanges is fixedly installed togather，The upper end of the lower end of two grades of crossover flanges and three grades of big fours is fixedly installed togather，The upper inside wall of one-level big four is installed with primary oil pipe hanger by removable fixation means，The upper inside wall of two grades of big fours is installed with two grades of tubing hangers by removable fixation means，The upper inside wall of three grades of big fours is installed with three grades of tubing hangers by removable fixation means.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
Between bottom outer wall and the upper inside wall of one-level big four of above-mentioned primary oil pipe hanger, rigid seal gasket ring can be installed, the primary oil pipe hanger outer wall below upper rigid seal gasket ring is installed with the upper baffle ring that can hold rigid seal gasket ring；Middle rigid seal gasket ring is installed between the upper inside wall of the bottom outer wall of two grades of tubing hangers and two grades of big fours, two grades of tubing hanger outer walls below middle rigid seal gasket ring are installed with in can holding the middle baffle ring of rigid seal gasket ring；Lower rigid seal gasket ring is installed between the upper inside wall of the bottom outer wall of three grades of tubing hangers and three grades of big fours, three grades of tubing hanger outer walls below lower rigid seal gasket ring are installed with the lower baffle ring that can hold lower rigid seal gasket ring.
Above-mentioned removable fixation means is jackscrew, the one-level big four on corresponding primary oil pipe hanger top can have upper through hole radially, correspondence has upper draw-in groove on the primary oil pipe hanger outer wall of through hole, be installed with jackscrew in upper through hole and upper draw-in groove；Two grades of big fours on corresponding two grades of tubing hanger tops there is middle through hole radially, correspondence has middle draw-in groove on two grades of tubing hanger outer walls of through hole, in middle through hole and middle draw-in groove, is installed with jackscrew；Three grades of big fours on corresponding three grades of tubing hanger tops have lower through-hole radially, three grades of tubing hanger outer walls of corresponding lower through-hole has lower bayonet slot, in lower through-hole and lower bayonet slot, is installed with jackscrew.
Ring gasket can be installed with between the above-mentioned lower end at upper master control gate valve and the upper end of one-level crossover flange, it is installed with ring gasket between lower end and the upper end of one-level big four of one-level crossover flange, it is installed with ring gasket between lower end and the upper end of lower master control gate valve of one-level big four, it is installed with two seals steel ring between lower end and the upper end of two grades of big fours of lower master control gate valve, it is installed with ring gasket between the upper end of the lower end of two grades of big fours and two grades of crossover flanges, two seals steel ring it is installed with between the upper end of the lower end of two grades of crossover flanges and three grades of big fours.
The upper end of above-mentioned little four-way, left end and right-hand member can be installed with gate valve respectively, the left end of one-level big four and right-hand member are installed with gate valve respectively, the left end of two grades of big fours and right-hand member are installed with gate valve respectively, and the left end of three grades of big fours and right-hand member are installed with gate valve respectively.
The lower inner wall of above-mentioned primary oil pipe hanger, the lower inner wall of two grades of tubing hangers and the lower inner wall of three grades of tubing hangers can have screw thread respectively.
Present configuration is reasonable and compact, easy to use, the three place's annular spaces formed between three grades of tubing hanger structures can select steam injection or a certain passage steam injection simultaneously according to the requirement of steam injection and lifting rate, meet the Multipoint Uniform steam injection of thick oil horizontal well, simultaneously, primary oil pipe hanger, two grades of tubing hangers and three grades of tubing hangers are both designed as mandrel type suspended structure, can meet the omnidistance Operating Pressure that tubing string removes and changes, and the sealing property of rigid seal circle is safe and reliable, Flange joint is easy to install.
Accompanying drawing explanation
The master that accompanying drawing 1 is preferred embodiment looks half section structural representation.
Accompanying drawing 2 is the A place partial enlargement sectional structure schematic diagram of accompanying drawing 1.
Accompanying drawing 3 is the B place partial enlargement sectional structure schematic diagram of accompanying drawing 1.
Coding in accompanying drawing is respectively as follows: 1 for little four-way, 2 is one-level big four, 3 is two grades of big fours, 4 is three grades of big fours, 5 is upper master control gate valve, 6 is one-level crossover flange, 7 is gate valve, 8 is two grades of crossover flanges, 9 is lower master control gate valve, 10 is primary oil pipe hanger, 11 is two grades of tubing hangers, 12 is three grades of tubing hangers, 13 is upper rigid seal gasket ring, 14 is upper baffle ring, 15 is middle rigid seal gasket ring, 16 is middle baffle ring, 17 is lower rigid seal gasket ring, 18 is lower baffle ring, 19 is jackscrew, 20 is upper through hole, 21 is upper draw-in groove, 22 is middle through hole, 23 is middle draw-in groove, 24 is lower through-hole, 25 is lower bayonet slot, 26 is ring gasket.
Detailed description of the invention
The present invention, not by the restriction of following embodiment, can determine specific embodiment according to technical scheme and practical situation.
In the present invention, for the ease of describing, the Butut mode that the description of the relative position relation of each parts is all according to Figure of description 1 is described, as: the position relationship of upper and lower, left and right etc. is based on what the Butut direction of Figure of description was determined.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in Figure 1, this tube-in-tube injecting-steam viscous crude oil well mouth device includes little four-way 1, one-level big four 3, three grades of big fours 4 of 2, two grades of big fours, upper master control gate valve 5, one-level crossover flange 6, lower master control gate valve 9 and two grades of crossover flanges 8；nullThe internal diameter of little four-way 1 is less than the internal diameter of one-level big four 2，The internal diameter of one-level big four 2 is less than the internal diameter of two grades of big fours 3，The internal diameter of two grades of big fours 3 is less than the internal diameter of three grades of big fours 4，The upper end of the lower end of little four-way 1 and upper master control gate valve 5 is fixedly installed togather，The lower end of upper master control gate valve 5 and the upper end of one-level crossover flange 6 are fixedly installed togather，The upper end of the lower end of one-level crossover flange 6 and one-level big four 2 is fixedly installed togather，The upper end of the lower end of one-level big four 2 and lower master control gate valve 9 is fixedly installed togather，The lower end of lower master control gate valve 9 and the upper end of two grades of big fours 3 are fixedly installed togather，The upper end of the lower end of two grades of big fours 3 and two grades of crossover flanges 8 is fixedly installed togather，The upper end of the lower end of two grades of crossover flanges 8 and three grades of big fours 4 is fixedly installed togather，The upper inside wall of one-level big four 2 is installed with primary oil pipe hanger 10 by removable fixation means，The upper inside wall of two grades of big fours 3 is installed with two grades of tubing hangers 11 by removable fixation means，The upper inside wall of three grades of big fours 4 is installed with three grades of tubing hangers 12 by removable fixation means.The three place's annular spaces formed between three grades of tubing hanger structures can select steam injection or a certain passage steam injection simultaneously according to the requirement of steam injection and lifting rate, meet the Multipoint Uniform steam injection of thick oil horizontal well, simultaneously, three tubing hangers are both designed as mandrel type suspended structure, can meet the omnidistance Operating Pressure that tubing string removes and changes.
According to actual needs, above-mentioned tube-in-tube injecting-steam viscous crude oil well mouth device can be made further optimization and/or improvements:
As shown in accompanying drawing 1,3, between bottom outer wall and the upper inside wall of one-level big four 2 of primary oil pipe hanger 10, rigid seal gasket ring 13 is installed, primary oil pipe hanger 10 outer wall below upper rigid seal gasket ring 13 is installed with the upper baffle ring 14 that can hold rigid seal gasket ring 13；Middle rigid seal gasket ring 15 is installed between the upper inside wall of the bottom outer wall of two grades of tubing hangers 11 and two grades of big fours 3, two grades of tubing hanger 11 outer walls below middle rigid seal gasket ring 15 are installed with in can holding the middle baffle ring 16 of rigid seal gasket ring 15；Lower rigid seal gasket ring 17 is installed between the upper inside wall of the bottom outer wall of three grades of tubing hangers 12 and three grades of big fours 4, three grades of tubing hanger 12 outer walls below lower rigid seal gasket ring 17 are installed with the lower baffle ring 18 that can hold lower rigid seal gasket ring 17.Rigid seal mode is adopted to guarantee the sealing reliability of worst hot case between 10, two grades of tubing hangers 11 of primary oil pipe hanger and three grades of tubing hangers 12 and 2, two grades of big fours 3 of one-level big four and three grades of big fours 4, upper baffle ring 14, middle baffle ring 16 and lower baffle ring 18 are arranged respectively at the bottom of 10, two grades of tubing hangers 11 of primary oil pipe hanger and three grades of tubing hangers 12, upper rigid seal gasket ring 13 or middle rigid seal gasket ring 15 or lower rigid seal gasket ring 17 can be proposed in the lump when tripping out primary oil pipe hanger 10 or two grades of tubing hangers 11 or three grades of tubing hanger 12, it is simple to safeguard and change.
As shown in accompanying drawing 1,2, removable fixation means is jackscrew 19, the one-level big four 2 on corresponding primary oil pipe hanger 10 top there is upper through hole 20 radially, correspondence has upper draw-in groove 21 on primary oil pipe hanger 10 outer wall of through hole 20, in upper through hole 20 and upper draw-in groove 21, be installed with jackscrew 19；Two grades of big fours 3 on corresponding two grades of tubing hanger 11 tops there is middle through hole 22 radially, correspondence has middle draw-in groove 23 on two grades of tubing hanger 11 outer walls of through hole 22, in middle through hole 22 and middle draw-in groove 23, is installed with jackscrew 19；Three grades of big fours 4 on corresponding three grades of tubing hanger 12 tops have lower through-hole 24 radially, three grades of tubing hanger 12 outer walls of corresponding lower through-hole 24 has lower bayonet slot 25, in lower through-hole 24 and lower bayonet slot 25, is installed with jackscrew 19.Jackscrew 19 is not subject to wellbore pressure when normal production, only tubing hanger is produced downforce, it is to avoid the probability that this position is revealed, and when tripping out tubing hanger, screws out jackscrew 19.
Such as accompanying drawing 1, shown in 2, it is installed with ring gasket 26 between the lower end and the upper end of one-level crossover flange 6 of upper master control gate valve 5, it is installed with ring gasket 26 between lower end and the upper end of one-level big four 2 of one-level crossover flange 6, it is installed with ring gasket 26 between lower end and the upper end of lower master control gate valve 9 of one-level big four 2, it is installed with two seals steel ring 26 between lower end and the upper end of two grades of big fours 3 of lower master control gate valve 9, ring gasket 26 it is installed with between the upper end of the lower end of two grades of big fours 3 and two grades of crossover flanges 8, two seals steel ring 26 it is installed with between the upper end of the lower end of two grades of crossover flanges 8 and three grades of big fours 4.Use ring gasket 26 to can guarantee that the sealing reliability under with pressure, work in hot environment, especially double containment steel ring 26, more can strengthen sealing.
As shown in Figure 1, the upper end of little four-way 1, left end and right-hand member are installed with gate valve 7 respectively, the left end of one-level big four 2 and right-hand member are installed with gate valve 7 respectively, the left end of two grades of big fours 3 and right-hand member are installed with gate valve 7 respectively, and the left end of three grades of big fours 4 and right-hand member are installed with gate valve 7 respectively.
As shown in Figure 1, the lower inner wall of primary oil pipe hanger 10, the lower inner wall of two grades of tubing hangers 11 and the lower inner wall of three grades of tubing hangers 12 have screw thread respectively.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
The use procedure of preferred embodiment: during installation, three grades of big fours 4 are connected with casing head upper flange, two ends connect gate valve 7, top is sequentially connected with 8, two grades of big fours 3 of two grades of crossover flanges, lower master control gate valve 9, one-level big four 2, one-level crossover flange 6, upper master control gate valve 5 and little four-way 1 and gate valve 7, when steam injection or production, by selecting to be turned on and off gate valve 7, control steam injection and apocenosis passage；When needs enforcement Operating Pressure trips out tubing string, first carry out oil pipe and throw stifled, throw after having blocked up, dismantle one-level crossover flange 6 or lower master control gate valve 9 or two grades of crossover flanges 8 and above section, primary oil pipe hanger 10 or two grades of tubing hangers 11 or three grades of tubing hangers 12 fixedly mount oil pipe operation device under pressure, unclamping jackscrew 19, what complete tubing string raises and decentralizes operation successively；After tubing string has been transferred, by setting in one-level big four 2 or two grades of big fours 3 or three grades of big fours 4 to primary oil pipe hanger 10 or two grades of tubing hangers 11 or three grades of tubing hangers 12, tighten jackscrew 19, dismounting oil pipe operation device under pressure, after ring gasket 26 is installed on hanger top, tubing head reducing joint and above section are installed, start to produce.
Claims (10)
1. a tube-in-tube injecting-steam viscous crude oil well mouth device, it is characterised in that include little four-way, one-level big four, two grades of big fours, three grades of big fours, upper master control gate valve, one-level crossover flange, lower master control gate valve and two grades of crossover flanges；nullThe internal diameter of little four-way is less than the internal diameter of one-level big four，The internal diameter of one-level big four is less than the internal diameter of two grades of big fours，The internal diameter of two grades of big fours is less than the internal diameter of three grades of big fours，The upper end of the lower end of little four-way and upper master control gate valve is fixedly installed togather，The lower end of upper master control gate valve and the upper end of one-level crossover flange are fixedly installed togather，The upper end of the lower end of one-level crossover flange and one-level big four is fixedly installed togather，The upper end of the lower end of one-level big four and lower master control gate valve is fixedly installed togather，The lower end of lower master control gate valve and the upper end of two grades of big fours are fixedly installed togather，The upper end of the lower end of two grades of big fours and two grades of crossover flanges is fixedly installed togather，The upper end of the lower end of two grades of crossover flanges and three grades of big fours is fixedly installed togather，The upper inside wall of one-level big four is installed with primary oil pipe hanger by removable fixation means，The upper inside wall of two grades of big fours is installed with two grades of tubing hangers by removable fixation means，The upper inside wall of three grades of big fours is installed with three grades of tubing hangers by removable fixation means.
2. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 1, it is characterized in that being provided with between the bottom outer wall of primary oil pipe hanger and the upper inside wall of one-level big four rigid seal gasket ring, the primary oil pipe hanger outer wall below upper rigid seal gasket ring is installed with the upper baffle ring that can hold rigid seal gasket ring；Middle rigid seal gasket ring is installed between the upper inside wall of the bottom outer wall of two grades of tubing hangers and two grades of big fours, two grades of tubing hanger outer walls below middle rigid seal gasket ring are installed with in can holding the middle baffle ring of rigid seal gasket ring；Lower rigid seal gasket ring is installed between the upper inside wall of the bottom outer wall of three grades of tubing hangers and three grades of big fours, three grades of tubing hanger outer walls below lower rigid seal gasket ring are installed with the lower baffle ring that can hold lower rigid seal gasket ring.
3. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 1 and 2, it is characterized in that removable fixation means is jackscrew, the one-level big four on corresponding primary oil pipe hanger top there is upper through hole radially, correspondence there is upper draw-in groove on the primary oil pipe hanger outer wall of through hole, in upper through hole and upper draw-in groove, is installed with jackscrew；Two grades of big fours on corresponding two grades of tubing hanger tops there is middle through hole radially, correspondence has middle draw-in groove on two grades of tubing hanger outer walls of through hole, in middle through hole and middle draw-in groove, is installed with jackscrew；Three grades of big fours on corresponding three grades of tubing hanger tops have lower through-hole radially, three grades of tubing hanger outer walls of corresponding lower through-hole has lower bayonet slot, in lower through-hole and lower bayonet slot, is installed with jackscrew.
4. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 1 and 2, it is characterized in that being installed with ring gasket between the lower end and the upper end of one-level crossover flange of upper master control gate valve, it is installed with ring gasket between lower end and the upper end of one-level big four of one-level crossover flange, it is installed with ring gasket between lower end and the upper end of lower master control gate valve of one-level big four, it is installed with two seals steel ring between lower end and the upper end of two grades of big fours of lower master control gate valve, it is installed with ring gasket between the upper end of the lower end of two grades of big fours and two grades of crossover flanges, two seals steel ring it is installed with between the upper end of the lower end of two grades of crossover flanges and three grades of big fours.
5. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 3, it is characterized in that being installed with ring gasket between the lower end and the upper end of one-level crossover flange of upper master control gate valve, it is installed with ring gasket between lower end and the upper end of one-level big four of one-level crossover flange, it is installed with ring gasket between lower end and the upper end of lower master control gate valve of one-level big four, it is installed with two seals steel ring between lower end and the upper end of two grades of big fours of lower master control gate valve, it is installed with ring gasket between the upper end of the lower end of two grades of big fours and two grades of crossover flanges, two seals steel ring it is installed with between the upper end of the lower end of two grades of crossover flanges and three grades of big fours.
6. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 1 and 2, it is characterized in that the upper end of little four-way, left end and right-hand member are installed with gate valve respectively, the left end of one-level big four and right-hand member are installed with gate valve respectively, the left end of two grades of big fours and right-hand member are installed with gate valve respectively, and the left end of three grades of big fours and right-hand member are installed with gate valve respectively.
7. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 3, it is characterized in that the upper end of little four-way, left end and right-hand member are installed with gate valve respectively, the left end of one-level big four and right-hand member are installed with gate valve respectively, the left end of two grades of big fours and right-hand member are installed with gate valve respectively, and the left end of three grades of big fours and right-hand member are installed with gate valve respectively.
8. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 4, it is characterized in that the upper end of little four-way, left end and right-hand member are installed with gate valve respectively, the left end of one-level big four and right-hand member are installed with gate valve respectively, the left end of two grades of big fours and right-hand member are installed with gate valve respectively, and the left end of three grades of big fours and right-hand member are installed with gate valve respectively.
9. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 5, it is characterized in that the upper end of little four-way, left end and right-hand member are installed with gate valve respectively, the left end of one-level big four and right-hand member are installed with gate valve respectively, the left end of two grades of big fours and right-hand member are installed with gate valve respectively, and the left end of three grades of big fours and right-hand member are installed with gate valve respectively.
10. tube-in-tube injecting-steam viscous crude oil well mouth device according to claim 9, it is characterised in that the lower inner wall of primary oil pipe hanger, the lower inner wall of two grades of tubing hangers and the lower inner wall of three grades of tubing hangers have screw thread respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310387328.9A CN103670329B (en) | 2013-08-30 | 2013-08-30 | Tube-in-tube injecting-steam viscous crude oil well mouth device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310387328.9A CN103670329B (en) | 2013-08-30 | 2013-08-30 | Tube-in-tube injecting-steam viscous crude oil well mouth device |
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| CN103670329A CN103670329A (en) | 2014-03-26 |
| CN103670329B true CN103670329B (en) | 2016-07-20 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313748B (en) * | 2017-05-31 | 2019-06-11 | 中国石油天然气股份有限公司 | Wellhead assembly and its operating method |
| CN112227998B (en) * | 2020-12-14 | 2021-02-26 | 东营华辰石油装备有限公司 | Double-pipe thermal recovery wellhead device and using method thereof |
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| CN203441457U (en) * | 2013-08-30 | 2014-02-19 | 中国石油天然气集团公司 | Pipe-in-pipe thickened oil steam injection well mouth device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5148865A (en) * | 1991-04-08 | 1992-09-22 | Reed Lehman T | Multi-conversion wellhead assembly |
| CN2559783Y (en) * | 2002-07-16 | 2003-07-09 | 辽河石油勘探局总机械厂 | Viscous oil thermal recovery well head apparatus |
| US6851478B2 (en) * | 2003-02-07 | 2005-02-08 | Stream-Flo Industries, Ltd. | Y-body Christmas tree for use with coil tubing |
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| CN103670329A (en) | 2014-03-26 |
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