CN106837247A - A kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain fills technique and device - Google Patents
A kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain fills technique and device Download PDFInfo
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- CN106837247A CN106837247A CN201710163164.XA CN201710163164A CN106837247A CN 106837247 A CN106837247 A CN 106837247A CN 201710163164 A CN201710163164 A CN 201710163164A CN 106837247 A CN106837247 A CN 106837247A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 117
- 238000005260 corrosion Methods 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 12
- 239000003112 inhibitor Substances 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
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- 239000003208 petroleum Substances 0.000 abstract description 2
- 230000002829 reductive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241001640558 Cotoneaster horizontalis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique and device, belong to petroleum works corrosion protection technology field.It is characterized in that：The consumption of corrosion inhibiter is accurately calculated during using the formula of present invention offer to construction, required corrosion inhibiter by measuring pump is conveyed to annular solid and six herringbone shower nozzles are given by annular solid, the big nozzle of each herringbone shower nozzle points to internal surface of sleeve pipe, small nozzle points to oil-pipe external wall, six projected areas of herringbone shower nozzle radially cover whole internal surface of sleeve pipe and oil-pipe external wall, and the projected area per two adjacent herringbone shower nozzles respectively on internal surface of sleeve pipe and oil-pipe external wall is present intersects, corrosion inhibiter flows downward along internal surface of sleeve pipe and oil-pipe external wall under gravity, finally returned out from oil pipe.The advantage of the technique is：The consumption of corrosion inhibiter can be saved, the cost of down-hole string corrosion protection is reduced.In addition, present invention also offers the device that corrosion inhibiter fountain fills technique.
Description
Technical field
The invention belongs to petroleum works corrosion protection technology field, and in particular to a kind of Oil/gas Well oil jacket annular space corrosion inhibiter spray
Pouring formula fills technique and device.
Background technology
Tubing and casing is important transportation passage of the oil gas from underground mining to ground.During oil-gas mining, oil casing
CO can be subject to2、H2The destruction of the unwanted corrosion such as S medium and ion, makes the corrosion-inhibiting coating of tubing and casing destruction occur and come off and right
There is corrosion and hindered in tubing string matrix, so as to the service life of shaft column can be substantially reduced.At present, the method for oil jacket annular space protection
It is main to have note corrosion inhibiter, add the means such as annular protective liquid.Usually, oil jacket annular space is by the pre- film of corrosion inhibiter and the side of continuous filling
Method is protected it.Usual corrosion inhibiter is returned out by the injection of tubing and casing annular space from oil pipe, corrosion inhibiter is adsorbed in internal surface of sleeve pipe
Layer protecting film is formed with oil pipe inside and outside wall, for completely cutting off contact of the corrosive medium with down-hole string, so as to reach protection underground
The purpose of tubing string.
But, the method for this corrosion inhibiter filling has the disadvantage that at present：First, corrosion inhibiter to internal surface of sleeve pipe and oil pipe outside
Wall can not be completely covered, and corrosion inhibiter is not smeared uniformly, and the integrality of its film is poor；2nd, consumption of the method to corrosion inhibiter
It is larger, larger waste can be caused so that the cost of down-hole string corrosion protection increases.
To solve the above problems the invention provides a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique and dress
Put, the technique can be relatively accurately calculated the consumption of corrosion inhibiter using formula provided by the present invention, required is delayed
Erosion agent is under the transmission of measuring pump by six herringbone shower nozzles of giving of annular solid, six herringbone shower nozzle handles in the way of spraying
Corrosion inhibiter is equably sprinkled upon internal surface of sleeve pipe and oil-pipe external wall, corrosion inhibiter is prolonged internal surface of sleeve pipe and oil-pipe external wall under gravity
Flow downward, then returned out from oil pipe with production, so as to the pre- film to oil jacket annular space corrosion inhibiter and reparation can be realized.Therefore, this hair
It is bright well to solve the problems, such as that oil jacket annular space corrosion inhibiter is filled.
The content of the invention
The technical problem to be solved in the present invention, is directed to the problem of Oil/gas Well oil jacket annular space corrosion inhibiter filling, and provides one
Planting be able to can be completely covered to internal surface of sleeve pipe and oil-pipe external wall, and can reduce the inhibition of the consumption and financial cost of corrosion inhibiter
Agent fountain fills technique and device.
To achieve the above object, the present invention uses following technical scheme：
A kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique, it is characterised in that：The technique is according to completion tubular column
It is structure, corrosion inhibiter effectively pre- film thickness, the concentration of corrosion inhibiter filling, the individual well daily output and inhibiter continuous injection cycle, right
The consumption that corrosion inhibiter is filled during construction is calculated using equation below (#)：
Q=Q1+Q2 (#)
Q1=k π μ h ρ (d1+d2+d3)×10-9(%)
Q2=GCQe×10-3 (&)
In formula, the filling total amount of Q corrosion inhibiter for needed for, kg；Q1Consumption for needed for the pre- film of corrosion inhibiter, kg；Q2It is corrosion inhibiter
Consumption needed for continuous filling, kg；K is the filling coefficient of the pre- film of corrosion inhibiter, takes 1.5~2.5；μ is corrosion inhibiter effectively pre- thickness
Degree, μm；H is well depth, m；ρ is the density of corrosion inhibiter, kg/m3；d1It is the internal diameter of sleeve pipe, mm；d2It is the external diameter of oil pipe, mm；d3For
The internal diameter of oil pipe, mm；G is the inhibiter continuous injection cycle, takes 30~90d；C is density of corrosion inhibitor, mg/L；QeFor individual well is produced daily
Amount, m3；
The corrosion inhibiter needed for calculating is conveyed to annular solid by measuring pump during construction, is given by the shunting action of annular solid
Six herringbone shower nozzles, the big nozzle of each herringbone shower nozzle points to internal surface of sleeve pipe, and small nozzle points to oil-pipe external wall, six herringbones
The corrosion inhibiter projected area of shape shower nozzle radially covers whole internal surface of sleeve pipe and oil-pipe external wall, and per two adjacent herringbones
Shape shower nozzle corrosion inhibiter projected area respectively on the inwall of sleeve pipe and the outer wall of oil pipe is present intersects, work of the corrosion inhibiter in gravity
Flowed downward along internal surface of sleeve pipe and oil-pipe external wall with lower, finally as production is returned out from oil pipe.
The present invention also provides the device that a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain fills technique：To be stored up by valve
Flow container is connected with measuring pump, and the other end of measuring pump is connected with connecting rod, by O-shaped between the other end and annular solid of connecting rod
Sealing ring is tightly connected, and the lower surface and the annular channel along annular solid that six herringbone shower nozzles are fixed on annular solid uniformly divide
Cloth；Described annular solid is mounted between casing head and tubing head, and six herringbone shower nozzles on annular solid lower surface are located at
On the annular center line of oil pipe and casing annulus；Described herringbone shower nozzle is installed by shower nozzle mounting hole, packing ring and fixing nut
Flushed with the bottom surface of annular solid inner annular runner in the joint of annular solid lower surface and herringbone shower nozzle, herringbone shower nozzle
The spout of big nozzle is inclined and points to internal surface of sleeve pipe, and the spout of small nozzle is inclined and points to oil-pipe external wall, and spout and spout are in same footpath
Arranged in parallel upwards, the distance of the midpoint of two spouts away from internal surface of sleeve pipe and oil-pipe external wall is equal and has enough jet lengths.
Further, the inner annular center line of described annular solid is provided with annular channel and the section of annular channel is in
Square, the lower surface of annular solid is provided with six shower nozzle mounting holes, and six shower nozzle mounting holes are uniformly distributed simultaneously along annular channel
All it is connected with annular channel, the central angle between adjacent two shower nozzles mounting hole is 60 °.
Further, described herringbone shower nozzle is by big nozzle, small nozzle, big nozzle connection A, small nozzle connection B, threeway
Joint, fixing nut and packing ring are constituted；One of described three-way connection is provided with packing ring and fixing nut, sets on two in addition
There is big nozzle connection A and small nozzle connection B, wherein one is connected by big nozzle connection A with big nozzle, another by small spray
Mouth joint B is connected with small nozzle, and the spout of big nozzle and small nozzle vent are parallel to each other and in same level；Described is big
The spout subtended angle of nozzle and small nozzle be 60 °~80 °, be both by stainless steel make flat burner and both
Length is identical, and the width of both spouts is 0.5~1mm, and the vent length of big nozzle is the 1.5~3 of the vent length of small nozzle
Times.
Further, the operating pressure of described measuring pump is 0.1MPa or so, six described sprays of herringbone shower nozzle
Drench feature uniform, stable.
Further, described Oil/gas Well is straight well, and oil pipe uses integral joint tubing.
The step of being filled to oil jacket annular space corrosion inhibiter fountain using the present invention is as follows：
The enough corrosion inhibiter of A, preparation are added in fluid reservoir, using formula as claimed in claim 1 (%) to corrosion inhibiter
Pre- film amount estimated；
B, opening valve, corrosion inhibiter is conveyed by measuring pump, is then shunted by annular solid, finally by six people
Corrosion inhibiter is sprayed to oil jacket annular space by font shower nozzle；
C, measuring pump is transferred to the operating pressure specified, six herringbone shower nozzles is continued to internal surface of sleeve pipe and oil-pipe external wall
Spray, returns out with oil gas from oil pipe (7) again behind corrosion inhibiter access wall bottom；
D, when measuring pump reaches the dosage that pre- film is specified, close valve (2) and measuring pump (3), completion corrosion inhibiter it is pre-
Film is constructed；
E, the consumption to corrosion inhibiter in an inhibiter continuous injection cycle use formula as claimed in claim 1 (＆)
Estimated, further according to required inhibiter consumption and the density of corrosion inhibitor specified, prepare enough corrosion inhibitor solutions and add storage
In flow container；
F, repeat step B~C carry out inhibiter continuous injection, and valve and measuring pump are closed after a continuous filling cycle；
G, according to each cycle repeat step of live practical condition A~F once.
It is of the invention compared with conventional corrosion inhibiter charging method, with advantages below：
(1) in the present invention, herringbone shower nozzle is mounted with, it can make corrosion inhibiter cover internal surface of sleeve pipe and oil-pipe external wall completely
Lid, and corrosion inhibiter smears uniform, and the integrality of inhibitor film is preferable.
(2) in the present invention, the technique can efficiently reduce the consumption to corrosion inhibiter, so that it is anti-to have saved down-hole string corrosion
The cost of shield.
(3) in the present invention, there is provided for the pre- film of corrosion inhibiter fountain and the computing formula of continuous filling consumption, can be to slow
The dosage for losing agent is accurately calculated.
Brief description of the drawings
Fig. 1 is to realize main device structure flow chart of the invention.
Fig. 2 is six corrosion inhibiter injection area coverage schematic diagrames of herringbone shower nozzle in present apparatus oil jacket annular space.
Fig. 3 is the external structure schematic diagram of present apparatus annular solid and connecting rod.
Fig. 4 is the structural representation that present apparatus annular solid inner flow passage and shower nozzle install pore size distribution.
Fig. 5 is the connection diagram between present apparatus annular solid and connecting rod.
Fig. 6 is transverse sectional view of the present apparatus annular solid along A1-A2 directions.
Fig. 7 is the three-way connection structural representation of present apparatus herringbone shower nozzle.
Fig. 8 is the external structure schematic diagram of present apparatus size flat burner.
Fig. 9 is the internal structure schematic diagram of present apparatus size flat burner.
Figure 10 is the nozzle configuration schematic diagram of present apparatus size flat burner.
In figure：1- fluid reservoirs, 2- valves, 3- measuring pumps, 4- connecting rods, 5- annular solids, 6- herringbone shower nozzles, 7- oil pipes,
8- sleeve pipes, 9- protective casings, 10- surface pipes, 11- casing heads, 12- tubing heads, 13- production trees, 14- shower nozzle mounting holes, 15-
Annular channel, 16-O type sealing rings, 17- nozzle connections B, 18- nozzle connection A, 19- three-way connection, 20- nuts, 21- packing rings,
The big nozzles of 22A-, the small nozzles of 22B-, the big nozzle vents of 23A-, the small nozzle vents of 23B-, 24- corrosion inhibiter projected areas.
Specific embodiment
It is described in detail with reference to the drawings and specific embodiments of the present invention.
A () installs
As shown in Figure 1, Figure 2 with shown in Fig. 5, fluid reservoir (1) is connected with measuring pump (3) by valve (2), measuring pump (3)
The other end is connected with connecting rod (4), is sealed by O-ring seal (16) between the other end and annular solid (5) of connecting rod (4) and connected
Connect, six herringbone shower nozzles (6) are fixed on the lower surface of annular solid (5) and uniform along the annular channel (15) of annular solid (5)
Distribution；Described annular solid (5) between casing head (11) and tubing head (12), on annular solid (5) lower surface six
Individual herringbone shower nozzle (6) is on the annular center line of oil pipe (7) and sleeve pipe (8) annular space；Described herringbone shower nozzle (6) is by spray
Head mounting hole (14), packing ring (21) and fixing nut (20) connect installed in annular solid (5) lower surface and herringbone shower nozzle (6)
Head is flushed with the bottom surface of annular solid (5) inner annular runner (15), the spout (23A) of the big nozzle (22A) of herringbone shower nozzle (6)
Incline and point to sleeve pipe (8) inwall, the spout (23B) of small nozzle (22B) is inclined and points to oil pipe (7) outer wall, spout (23A) and spout
(23B) same radially arranged in parallel, the distance of the midpoint of two spouts away from sleeve pipe (8) inwall and oil pipe (7) outer wall is equal simultaneously
And have enough jet lengths.
As shown in Fig. 3, Fig. 4 and Fig. 6, the inner annular center line of described annular solid (5) be provided with annular channel (15) and
And the section of annular channel (15) is square, the lower surface of annular solid (5) is provided with six shower nozzle mounting holes (14), six sprays
Head mounting hole (14) is uniformly distributed along annular channel (15) and is all connected with annular channel (15), adjacent two shower nozzles mounting hole
(14) central angle between is 60 °.
As shown in Fig. 1, Fig. 7 and Fig. 8, described herringbone shower nozzle (6) is by big nozzle (22A), small nozzle (22B), big spray
Mouth joint A (18), small nozzle connection B (17), three-way connection (19), fixing nut (20) and packing ring (21) are constituted；Described three
Pass joint (19) upper end is provided with packing ring (21) and fixing nut (20), and lower end one passes through big nozzle connection A (18) and big nozzle
(22A) is connected, and another branch is connected by small nozzle connection B (17) with small nozzle (22B), the spout (23A) of big nozzle (22A) and
Small nozzle (22B) spout (23B) is parallel to each other and in same level；Described big nozzle (22A) and small nozzle (22B)
Spout subtended angle be 60 °~80 °, be both by stainless steel make flat burner and nozzle length is identical, both spray
The width of mouth (23) is 0.5~1mm, and spout (23A) length of big nozzle (22A) is spout (23B) length of small nozzle (22B)
1.5~3 times.Further, the operating pressure of described measuring pump (3) is 0.1MPa or so；Described six herringbones spray
The spray feature of head (6) is uniform, stabilization.
Further, the Oil/gas Well in the present invention is straight well, and oil pipe (7) uses integral joint tubing.
(b) filling technique
According to completion tubular column structure, the corrosion inhibiter concentration that effectively pre- film thickness, corrosion inhibiter are filled, the individual well daily output and slow
Erosion agent continuously fills the cycle, and the consumption of filling corrosion inhibiter is calculated using equation below (#) during to construction：
Q=Q1+Q2 (#)
Q1=k π μ h ρ (d1+d2+d3)×10-9(%)
Q2=GCQe×10-3 (&)
In formula, the filling total amount of Q corrosion inhibiter for needed for, kg；Q1Consumption for needed for the pre- film of corrosion inhibiter, kg；Q2It is corrosion inhibiter
Consumption needed for continuous filling, kg；K is the filling coefficient of the pre- film of corrosion inhibiter, takes 1.5~2.5；μ is corrosion inhibiter effectively pre- thickness
Degree, μm；H is well depth, m；ρ is the density of corrosion inhibiter, kg/m3；d1It is the internal diameter of sleeve pipe (8), mm；d2It is the external diameter of oil pipe (7),
mm；d3It is the internal diameter of oil pipe (7), mm；G is the inhibiter continuous injection cycle, takes 30~90d；C is density of corrosion inhibitor, mg/L；Qe
It is the individual well daily output, m3；
The corrosion inhibiter needed for calculating is conveyed to annular solid (5) by measuring pump (3) during construction, by dividing for annular solid (5)
Six herringbone shower nozzles (6) are given in stream effect, and the big nozzle (22A) of each herringbone shower nozzle (6) points to sleeve pipe (8) inwall, small
Nozzle (22B) points to oil pipe (7) outer wall, and the corrosion inhibiter projected area (24) of six herringbone shower nozzles (6) radially covers whole
Individual sleeve pipe (8) inwall and oil pipe (7) outer wall, and per two adjacent herringbone shower nozzles (6) respectively sleeve pipe (8) inwall and
There is intersection in the corrosion inhibiter projected area (24) on the outer wall of oil pipe (7), corrosion inhibiter is under gravity along sleeve pipe (8) inwall
Flowed downward with oil pipe (7) outer wall, finally as production is returned out from oil pipe (7).
The step of being filled to oil jacket annular space corrosion inhibiter fountain using the present invention is as follows：
The enough corrosion inhibiter of A, preparation are added in fluid reservoir (1), using formula as claimed in claim 1 (%) to inhibition
The pre- film amount of agent is estimated；
B, opening valve (2), corrosion inhibiter is conveyed by measuring pump (3), is then shunted by annular solid (5), finally
Corrosion inhibiter is sprayed to oil jacket annular space by six herringbone shower nozzles (6)；
C, measuring pump (3) is transferred to the operating pressure specified, makes six herringbone shower nozzles (6) to sleeve pipe (8) inwall and oil
Pipe (7) outer wall is persistently sprayed, and is returned out from oil pipe (7) with oil gas again behind corrosion inhibiter access wall bottom；
D, when measuring pump (3) reaches the dosage that pre- film is specified, close valve (2) and measuring pump (3), completion corrosion inhibiter
Pre- film construction；
E, the consumption to corrosion inhibiter in an inhibiter continuous injection cycle use formula as claimed in claim 1 (＆)
Estimated, further according to required inhibiter consumption and the density of corrosion inhibitor specified, prepare enough corrosion inhibitor solutions and add storage
In flow container (1)；
F, repeat step B~C carry out inhibiter continuous injection, and valve (2) and metering are closed after a continuous filling cycle
Pump (3)；
G, according to each cycle repeat step of live practical condition A~F once.
Claims (4)
1. a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique, it is characterised in that：Required corrosion inhibiter is by measuring pump
(3) annular solid (5) is conveyed to, six herringbone shower nozzles (6), the spray of each herringbone is given by the shunting action of annular solid (5)
The big nozzle (22A) of head (6) points to sleeve pipe (8) inwall, and small nozzle (22B) points to oil pipe (7) outer wall, six herringbone shower nozzles
(6) corrosion inhibiter projected area (24) radially covers whole sleeve pipe (8) inwall and oil pipe (7) outer wall, and per adjacent
The corrosion inhibiter projected area (24) of two herringbone shower nozzles (6) respectively on the inwall of sleeve pipe (8) and the outer wall of oil pipe (7) is present
Intersect, corrosion inhibiter flows downward along sleeve pipe (8) inwall and oil pipe (7) outer wall under gravity, finally with production from oil
Pipe (7) is returned out, and the consumption of required corrosion inhibiter can be dense according to completion tubular column structure, corrosion inhibiter effectively pre- film thickness, corrosion inhibiter filling
Degree, the individual well daily output and inhibiter continuous injection cycle, calculated using equation below (#)：
Q=Q1+Q2 (#)
Q1=k π μ h ρ (d1+d2+d3)×10-9(%)
Q2=GCQe×10-3 (&)
In formula, the filling total amount of Q corrosion inhibiter for needed for, kg；Q1Consumption for needed for the pre- film of corrosion inhibiter, kg；Q2For corrosion inhibiter is continuous
Consumption needed for filling, kg；K is the filling coefficient of the pre- film of corrosion inhibiter, takes 1.5~2.5；μ is corrosion inhibiter effectively pre- film thickness, μ
m；H is well depth, m；ρ is the density of corrosion inhibiter, kg/m3；d1It is the internal diameter of sleeve pipe (8), mm；d2It is the external diameter of oil pipe (7), mm；d3
It is the internal diameter of oil pipe (7), mm；G is the inhibiter continuous injection cycle, takes 30~90d；C is density of corrosion inhibitor, mg/L；QeIt is list
The well daily output, m3；
Described measuring pump (3) is connected by valve (2) with fluid reservoir (1), and the other end of measuring pump (3) is with connecting rod (4) even
Connect, be tightly connected by O-ring seal (16) between the other end and annular solid (5) of connecting rod (4), six herringbone shower nozzles
(6) lower surface and the annular channel (15) along annular solid (5) for being fixed on annular solid (5) are uniformly distributed；
Described annular solid (5) between casing head (11) and tubing head (12), six on annular solid (5) lower surface
Herringbone shower nozzle (6) is on the annular center line of oil pipe (7) and sleeve pipe (8) annular space；
Described herringbone shower nozzle (6) is by shower nozzle mounting hole (14), packing ring (21) and fixing nut (20) installed in annular solid
(5) joint of lower surface and herringbone shower nozzle (6) is flushed with the bottom surface of annular solid (5) inner annular runner (15), herringbone
The spout (23A) of the big nozzle (22A) of shape shower nozzle (6) is inclined and points to sleeve pipe (8) inwall, and the spout (23B) of small nozzle (22B) is inclined
Point to oil pipe (7) outer wall, same radially arranged in parallel, the midpoint of two spouts is away from sleeve pipe for spout (23A) and spout (23B)
(8) distance of inwall and oil pipe (7) outer wall is equal and has enough jet lengths.
2. a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique as claimed in claim 1, it is characterised in that oil jacket
The step of annular space corrosion inhibiter is filled is as follows：
The enough corrosion inhibiter of A, preparation are added in fluid reservoir (1), using formula as claimed in claim 1 (%) to corrosion inhibiter
Pre- film amount is estimated；
B, opening valve (2), corrosion inhibiter is conveyed by measuring pump (3), is then shunted by annular solid (5), finally by
Corrosion inhibiter is sprayed to oil jacket annular space by six herringbone shower nozzles (6)；
C, measuring pump (3) is transferred to the operating pressure specified, makes six herringbone shower nozzles (6) to sleeve pipe (8) inwall and oil pipe (7)
Outer wall is persistently sprayed, and is returned out from oil pipe (7) with oil gas again behind corrosion inhibiter access wall bottom；
D, when measuring pump (3) reaches the dosage that pre- film is specified, close valve (2) and measuring pump (3), the pre- film of completion corrosion inhibiter
Construction；
E, the consumption to corrosion inhibiter in an inhibiter continuous injection cycle are carried out using formula as claimed in claim 1 (＆)
Estimation, further according to required inhibiter consumption and the density of corrosion inhibitor specified, prepares enough corrosion inhibitor solutions and adds fluid reservoir
(1) in；
F, repeat step B~C carry out inhibiter continuous injection, and valve (2) and measuring pump are closed after a continuous filling cycle
(3)；
G, according to each cycle repeat step of live practical condition A~F once.
3. a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique as claimed in claim 1, it is characterised in that：It is described
The inner annular center line of annular solid (5) be provided with annular channel (15) and the section of annular channel (15) is square, ring
The lower surface of body (5) is provided with six shower nozzle mounting holes (14), and six shower nozzle mounting holes (14) are uniform along annular channel (15)
It is distributed and is all connected with annular channel (15), the central angle between adjacent two shower nozzles mounting hole (14) is 60 °.
4. a kind of Oil/gas Well oil jacket annular space corrosion inhibiter fountain filling technique as claimed in claim 1, it is characterised in that：It is described
Herringbone shower nozzle (6) by big nozzle (22A), small nozzle (22B), big nozzle connection A (18), small nozzle connection B (17), threeway
Joint (19), fixing nut (20) and packing ring (21) are constituted；One of described three-way connection (19) be provided with packing ring (21) and
Fixing nut (20), two are provided with big nozzle connection A (18) and small nozzle connection B (17) in addition, wherein one by big spray
Mouth joint A (18) is connected with big nozzle (22A), and another is connected by small nozzle connection B (17) with small nozzle (22B), big spray
The spout (23A) and small nozzle (22B) spout (23B) of mouth (22A) are parallel to each other and in same level；Described big nozzle
The spout subtended angle of (22A) and small nozzle (22B) be 60 °~80 °, be both by stainless steel make flat burner and
Both length is identical, and the width of both spouts is 0.5~1mm, and spout (23A) length of big nozzle (22A) is small nozzle
1.5~3 times of spout (23B) length of (22B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710163164.XA CN106837247B (en) | 2017-03-19 | 2017-03-19 | A kind of oil/gas well oil jacket annulus corrosion inhibiter fountain filling technique and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710163164.XA CN106837247B (en) | 2017-03-19 | 2017-03-19 | A kind of oil/gas well oil jacket annulus corrosion inhibiter fountain filling technique and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837247A true CN106837247A (en) | 2017-06-13 |
| CN106837247B CN106837247B (en) | 2019-02-22 |
Family
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806847A (en) * | 2017-10-26 | 2018-03-16 | 西南石油大学 | A kind of pre- film thickness test device of corrosion inhibiter and method |
| CN107806333A (en) * | 2017-10-10 | 2018-03-16 | 中国石油天然气股份有限公司 | Method and device for injecting protective liquid |
| CN110685642A (en) * | 2018-06-20 | 2020-01-14 | 中国石油天然气股份有限公司 | Method for determining anti-corrosion process of acid gas well |
| CN112963123A (en) * | 2021-02-02 | 2021-06-15 | 西南石油大学 | Automatic protection device for oil discharge pipe and operation method thereof |
| CN113006743A (en) * | 2021-03-23 | 2021-06-22 | 西南石油大学 | Automatic coating process for gas recovery well corrosion inhibition liquid |
| CN115387758A (en) * | 2022-08-20 | 2022-11-25 | 西南石油大学 | Shaft wax removal and descaling device and operation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150369229A1 (en) * | 2014-06-19 | 2015-12-24 | Saudi Arabian Oil Company | Downhole Chemical Injection Method and System for Use in ESP Applications |
| CN105569632A (en) * | 2016-01-13 | 2016-05-11 | 西南石油大学 | Safety management control device for annulus in oil jacket of gas well and management control method for management control device |
| CN106285503A (en) * | 2016-09-27 | 2017-01-04 | 西南石油大学 | Acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus and method |
| CN106285566A (en) * | 2016-08-01 | 2017-01-04 | 中嵘能源科技集团有限公司 | A kind of air injection anticorrosion completion method and the inhibition acid solution wherein used |
-
2017
- 2017-03-19 CN CN201710163164.XA patent/CN106837247B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150369229A1 (en) * | 2014-06-19 | 2015-12-24 | Saudi Arabian Oil Company | Downhole Chemical Injection Method and System for Use in ESP Applications |
| CN105569632A (en) * | 2016-01-13 | 2016-05-11 | 西南石油大学 | Safety management control device for annulus in oil jacket of gas well and management control method for management control device |
| CN106285566A (en) * | 2016-08-01 | 2017-01-04 | 中嵘能源科技集团有限公司 | A kind of air injection anticorrosion completion method and the inhibition acid solution wherein used |
| CN106285503A (en) * | 2016-09-27 | 2017-01-04 | 西南石油大学 | Acid gas well flow string inwall medium corrosion-resistant automatic painting apparatus and method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806333A (en) * | 2017-10-10 | 2018-03-16 | 中国石油天然气股份有限公司 | Method and device for injecting protective liquid |
| CN107806847A (en) * | 2017-10-26 | 2018-03-16 | 西南石油大学 | A kind of pre- film thickness test device of corrosion inhibiter and method |
| CN110685642A (en) * | 2018-06-20 | 2020-01-14 | 中国石油天然气股份有限公司 | Method for determining anti-corrosion process of acid gas well |
| CN110685642B (en) * | 2018-06-20 | 2021-09-28 | 中国石油天然气股份有限公司 | Method for determining anti-corrosion process of acid gas well |
| CN112963123A (en) * | 2021-02-02 | 2021-06-15 | 西南石油大学 | Automatic protection device for oil discharge pipe and operation method thereof |
| CN113006743A (en) * | 2021-03-23 | 2021-06-22 | 西南石油大学 | Automatic coating process for gas recovery well corrosion inhibition liquid |
| CN115387758A (en) * | 2022-08-20 | 2022-11-25 | 西南石油大学 | Shaft wax removal and descaling device and operation method |
| CN115387758B (en) * | 2022-08-20 | 2023-04-21 | 西南石油大学 | Paraffin removal and scale removal device for shaft and operation method |
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