CN206205797U - Oil and gas reservoir type gas storage injection and production well completion pipe string - Google Patents
Oil and gas reservoir type gas storage injection and production well completion pipe string Download PDFInfo
- Publication number
- CN206205797U CN206205797U CN201621057852.5U CN201621057852U CN206205797U CN 206205797 U CN206205797 U CN 206205797U CN 201621057852 U CN201621057852 U CN 201621057852U CN 206205797 U CN206205797 U CN 206205797U
- Authority
- CN
- China
- Prior art keywords
- ball
- packer
- casing
- production
- well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 75
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 238000003860 storage Methods 0.000 title claims abstract description 23
- 210000002445 nipple Anatomy 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000006978 adaptation Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 82
- 239000012530 fluid Substances 0.000 description 13
- 238000010008 shearing Methods 0.000 description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 230000006378 damage Effects 0.000 description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 241000191291 Abies alba Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses an oil gas reservoir type gas storage annotates and adopts well completion tubular column belongs to the well completion equipment field. The completion string includes: the device comprises an oil pipe, a downhole safety valve, a sliding sleeve, a packer, a production casing, a technical casing, a surface casing, a soluble ball and a ball seat. The underground safety valve, the sliding sleeve, the packer and the ball seat are communicated in sequence from top to bottom through oil pipes to form a tubular column main body. And the top of the underground safety valve is provided with an oil pipe, and the oil pipe is connected to a wellhead of the injection and production well. The pipe column main body is suspended on the inner wall of the production casing through the packer, the technical casing is sleeved on the outer side of the production casing, and the surface casing is sleeved on the outer side of the technical casing. The ball seat middle part is provided with soluble ball looks adaptation to the ball groove of upper and lower intercommunication, soluble ball gets into the tubular column main part from the oil pipe of well head, and falls into ball seat interior shutoff ball groove. The well completion pipe column can avoid mechanical abrasion of a production casing pipe, prevent packer packing failure, is convenient to use, and is suitable for large-scale popularization and application.
Description
Technical field
The utility model is related to completion equipment field, more particularly to a kind of oil-gas reservoir type gas storage production-injection well completion tubing string.
Background technology
Natural gas from underground mining out after, it is necessary to be delivered to ground spherical tank or underground natural gas storage tank carry out it is centrally stored, with
Just taken when needed.Oil-gas reservoir type gas storage, because the permeability and porosity of its gas-bearing reservoir are moderate, is difficult gas leakage, fortune
It is reliable and stable during row and cheap, so being widely used.And in order to injecting gas in gas-bearing reservoir, or
Natural gas is produced and utilized from gas-bearing reservoir, there is provided a kind of completion tubular column for being easy to gas injection and gas production is very necessary
's.
Prior art provides a kind of oil-gas reservoir type gas storage completion tubular column, and the completion tubular column includes：Surface pipe, technology
Sleeve pipe, production casing, safety valve, sliding sleeve, packer, ball sealer, shearing ball seat, oil pipe.Safety valve, sliding sleeve, packer, shearing
Ball seat is sequentially connected by oil pipe, forms tubular body.Shearing ring is provided with shearing ball seat, shearing ring is fixed by a pin to
Shear on the inwall of ball seat.Slips is provided with the side wall of packer, packer is fixed in production casing by slips
On wall, protective casing, surface pipe are successively sleeved on the outside of production casing successively, form completion tubular column.It is when using, this is complete
Enter under well casing post in injection-production well, safety valve is connected to injection-production well mouthful by oil pipe, and shear balls seat is located at the upper of gas-bearing reservoir
Side.To pressure fluid is injected in oil pipe, packer is set to carry out packing operation to oil jacket annular space.After packing operation is finished, to tubing string master
Ball sealer is put into body to suppress shearing ball seat, now the pin in shearing ball seat is cut, and ball sealer falls into note with shearing ring
Adopt the shaft bottom of well.Completion tubular column is in unimpeded normality, so that natural gas can smoothly inject or discharge gas-bearing reservoir, realizes natural
The storage of gas and take.
Designer has found that prior art at least has following technical problem：
The completion tubular column that prior art is provided, when the sealing of shearing ball seat and ball sealer is released, shears ball seat and sealing
Ball directly drops and enters shaft bottom, and unexpected pressure release, easily makes the slips of packer along production casing in the moment completion tubular column for dropping
Move up, so as to cause mechanical damage to the inwall of production casing, and the packing failure of packer is easily caused, after being unfavorable for
Continuous gas injection and the carrying out of gas production process.
Utility model content
The utility model embodiment technical problem to be solved is, there is provided one kind can avoid production casing machinery
Wear and tear, prevent packer packing every the oil-gas reservoir type gas storage production-injection well completion tubing string of failure, concrete technical scheme is as follows：
The utility model embodiment provides a kind of oil-gas reservoir type gas storage production-injection well completion tubing string, the completion tubular column bag
Include：Multiple-tubing string, storm valve, sliding sleeve, packer, production casing, protective casing, surface pipe, solvable ball and ball seat.Institute
State storm valve, the sliding sleeve, the packer, the ball seat from top to bottom sequentially to be connected by the oil pipe, and formed
Tubular body, and storm valve top is provided with the oil pipe, the oil pipe is connected to the well head of injection-production well.By institute
State packer the tubular body is suspended on the inwall of the production casing, and the protective casing is sleeved on the life
Is produced from the outside of sleeve pipe, the surface pipe is sleeved on the outside of the protective casing.Ball seat middle part be provided with it is described can
Molten ball is adapted, and the ball groove for connecting up and down.The solvable ball enters the tubular body from the oil pipe of the well head, and falls
Enter the closure ball groove in the ball seat.
Specifically, preferably, the completion tubular column also includes upper flowing pipe nipple and lower flowing pipe nipple, the upper flowing is short
The top of section is connected and turns on the oil pipe, and bottom is connected and turns on the top of the storm valve, the lower flowing
The top of pipe nipple is connected and turns on the bottom of the storm valve, and bottom is connected and turns on another oil pipe.Specifically
Ground, preferably, the sidewall thickness of the flowing pipe nipple is 14.5-17.5mm.
Specifically, preferably, the coboundary 50-60m of the distance from bottom gas-bearing reservoir of the ball seat.
Specifically, preferably, the bottom of the production casing is located at below the gas-bearing reservoir lower boundary at 80-100m.
Specifically, preferably, the packer is permanent packer.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The oil-gas reservoir type gas storage production-injection well completion tubing string that the utility model embodiment is provided, by will be of the prior art
Conventional seals ball replaces with solvable ball, and shearing ball seat is replaced with into the ball seat being engaged with solvable ball, is noted by oil pipe
Enter well killing fluid, solvable ball is dissolved in the presence of the monovalence such as KCl, NaCl or divalent metal salt in the well killing fluid, so that without beat
Make tubular body gradually depressurization by falling ball seat, tubular body is connected with gas-bearing reservoir by the ball groove of ball seat, with reality
Existing gas injection and gas production process are smoothed out.After solvable ball, tubular body gradually pressure release will not make the slips of packer dash forward
So move up so that damage of the tube wall of production casing from packer slip, and ensure that packer set effect,
Being easy to the safety of follow-up gas injection and gas production process is carried out.Meanwhile, with solvable ball coordinate ball seat set packer when without using
The implements such as steel wire, so as to reduce operating risk, improve safety in production coefficient.It can be seen that, the utility model embodiment is carried
The oil-gas reservoir type gas storage production-injection well completion tubing string of confession, the mechanical wear that can avoid production casing are, the packing for preventing packer
Failure, and it is easy to use, it is suitable to large-scale promotion application.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation of the oil-gas reservoir type gas storage production-injection well completion tubing string that the utility model embodiment is provided.
Reference is represented respectively：
1 oil pipe,
2 storm valves,
3 sliding sleeves,
4 packers,
5 production casings,
6 protective casings,
7 surface pipes,
8 solvable balls,
9 ball seats,
Pipe nipple is flowed on 10,
11 times flowing pipe nipples,
12 gas-bearing reservoirs.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below will be to the utility model embodiment party
Formula is described in further detail.
The utility model embodiment provides a kind of oil-gas reservoir type gas storage production-injection well completion tubing string, as shown in Figure 1, should
Completion tubular column includes：Multiple-tubing string 1, storm valve 2, sliding sleeve 3, packer 4, production casing 5, protective casing 6, surface pipe
7th, solvable ball 8, ball seat 9.Wherein, storm valve 2, sliding sleeve 3, packer 4, ball seat 9 are sequentially connected by oil pipe 1, and are formed
Tubular body, and the top of storm valve 2 is provided with oil pipe 1, oil pipe 1 is connected to the well head of injection-production well.To be managed by packer 4
Post main body is suspended on the inwall of production casing 5, and protective casing 6 is sleeved on the outside of production casing 5,7 sets of surface pipe
Mounted in the outside of protective casing 6.The middle part of ball seat 9 is provided with and is adapted with solvable ball 8, and the ball groove for connecting up and down, solvable ball 8
Enter tubular body from the oil pipe 1 of well head, and fall into closure ball groove in ball seat 9.
The oil-gas reservoir type gas storage production-injection well completion tubing string that the utility model embodiment is provided, by will be of the prior art
Conventional seals ball replaces with solvable ball 8, and shearing ball seat 9 is replaced with into the ball seat 9 being engaged with solvable ball 8, by oil pipe 1
Middle injection well killing fluid, makes solvable ball 8 be dissolved in the presence of the monovalence such as KCl, NaCl or divalent metal salt in the well killing fluid, so that nothing
Make tubular body gradually depressurization by ball seat 9 need to be destroyed, tubular body is connected with gas-bearing reservoir 12, with realize gas injection and
Gas production process is smoothed out.After solvable ball 8, tubular body gradually pressure release will not make the slips of packer 4 upward suddenly
It is mobile, so that damage of the tube wall of production casing 5 from the slips of packer 4, and the effect that sets of packer 4 is ensure that, just
Carried out in the safety of follow-up gas injection and gas production process.Meanwhile, with solvable ball 8 coordinate 9 set packer 4 of ball seat when without using
The implements such as steel wire, so as to reduce operating risk, improve safety in production coefficient.It can be seen that, the utility model embodiment is carried
The oil-gas reservoir type gas storage production-injection well completion tubing string of confession, the mechanical wear that can avoid production casing 5 are, the envelope for preventing packer 4
It is every failure and easy to use, it is suitable to large-scale promotion application.
Wherein, storm valve 2, sliding sleeve 3, packer 4, ball seat 9 are sequentially connected by oil pipe 1, and are led between each part
Air-tight seal screw joint connection is crossed, tubular body is formed, storm valve 2 is connected to the well head of injection-production well by oil pipe 1.Underground
Safety valve 2 is near the position of well head, so that being closed in time during unsafe condition occurs in injection-production well in storm valve 2, is protected
Demonstrate,prove the safety of injection-production well.And packer 4, sliding sleeve 3 and the ball seat 9 then middle and lower part in injection-production well, and near the position of reservoir, with
It is easy to inject natural gas and gathered.Meanwhile, be successively set with tubular body outer wall production casing 5, protective casing 6,
Surface pipe 7, is protected by each layer sleeve pipe to tubular body, it is ensured that tubular body gas injection and gas production process smoothly enter
OK.
Swiftly flowing gas causes erosion, this practicality to storm valve 2 in tubing string during in order to avoid gas production and gas injection
The oil-gas reservoir type gas storage production-injection well completion tubing string that new embodiment is provided also includes upper flowing pipe nipple 10 and lower flowing pipe nipple 11,
The top of upper flowing pipe nipple 10 is connected and turns on the oil pipe 1 on top, and bottom is connected and turns on the top of storm valve 2,
The top of lower flowing pipe nipple 11 is connected and turns on the bottom of storm valve 2, and bottom is connected and turns on another oil pipe 1, with
Top and bottom to storm valve 2 are protected, and prevent the erosion of gas from including causing to damage to storm valve 2.On
Flowing pipe nipple 10 and lower flowing pipe nipple 11 are actually tubing nipple, but its side wall is thicker, generally 14.5-17.5mm, example
Such as it is 14.5mm, 15mm, 16mm, 17.5mm.Therefore, the gas for flowing up and down erosion first is to upper flowing pipe nipple 10 or flows down
Dynamic pipe nipple 11, it is to avoid coup injuries of the flowing gas to storm valve 2, extends the service life of storm valve 2.
Specifically, for the ease of gas injection and the carrying out of gas production process, production casing 5 is longitudinally through gas-bearing reservoir 12, and production
The bottom of sleeve pipe 5 is located at below the lower boundary of gas-bearing reservoir 12 at 80-100m, i.e., the depth ratio gas-bearing reservoir 12 where the bottom of production casing 5
Lower boundary it is deeper, think that enough spaces are reserved in shaft bottom operation.Meanwhile, the bottom of tubular body, i.e. position where ball seat 9
Put, apart from the coboundary 50-60m of gas-bearing reservoir 12, in order to setting for packer 4, it is to avoid packer 4 is to gas injection and gas production process
Produce obstruction.
Specifically, the packing used in the oil-gas reservoir type gas storage production-injection well completion tubing string that the utility model embodiment is provided
Device 4 is permanent packer, and slips is provided with the side wall of the packer 4, and when setting, slips firmly grasps the inwall of production casing 5,
Annular space between tubular body and production casing 5 is divided into by two parts separate up and down by packer 4, in upper part
Injection annular protective liquid, to avoid the corrosion of each part in production casing 5 and tubular body.If cut using of the prior art
Cut seat sets to packer 4, and when needing to unload shearing ball seat, shearing ball seat drops suddenly, and tubular body inside is prominent
Right pressure release, forms a upward reaction force, easily moves up slips, causes the packing of packer 4 to fail, while card
Watt can also scratch the inwall of production casing 5.And after using solvable ball 8, ball seat 9 enters injection-production well with completion tubular column, solvable ball 8 with
Ball seat 9 is engaged, and the ball groove of ball seat 9 is divided into interconnected upper and lower part, and top is in concave shape, is mutually fitted with solvable ball 8
Match somebody with somebody, after solvable ball 8 falls into the top of ball groove, the closure of oil pipe can be realized, in order to setting for packer 4.Ball groove bottom is
Cylinder, and middle part is provided with through hole, the diameter of through hole is less than the diameter of solvable ball 8, during so that solvable ball 8 just falling into ball groove,
Ball groove can be blocked.And the monovalence such as KCl, NaCl or divalent metal salt can gradually dissolve solvable ball 8 in well killing fluid, so that
The upper and lower part of ball groove is connected, oil pipe 1 is connected with injection-production well bottom.The process is more gentle so that tubing string master
Pressure in body can gradually release, and so as to avoid the movement of slips, it is therefore prevented that the mechanical damage of production casing 5, make packing
The packing effect of device 4 is ensured.
Wherein, the solvable ball 8 that the utility model embodiment is used is the medicine ball being made up of metallic composite, its density
It is smaller than aluminium, but intensity is suitable with steel, therefore with relatively low proportion and shear strength higher.The size of solvable ball 8
Can be adjusted according to the type of the operating mode of injection-production well and completion fluid with dissolution velocity, the highest of general solvable ball 8 and ball seat 9 is held
Pressure energy power is 70MPa, 177 DEG C of heatproof.The solvable ball 8 is dissolvable in water in the aqueous solution of slaine, and its dissolution velocity receives the aqueous solution
The influence of type, the solution temperature of middle metal cation etc., 3% Klorvess Liquid is can obtain most preferable rate of dissolution molten
Liquid.Meanwhile, solution temperature is higher, and the rate of dissolution of solvable ball 8 is bigger.Before Specific construction operation is carried out using solvable ball 8,
Dissolution experiment can be carried out using well killing fluid, to determine the ginseng such as the injection rate of dissolution velocity, time and well killing fluid of solvable ball 8
Number, then carries out practice of construction operation again.Solvable ball 8 enables the pressure in tubular body gradually to release, it is to avoid the shifting of slips
It is dynamic, so as to prevent the mechanical damage of production casing 5, it is ensured that the packing effect of packer 4.
Specifically, in order to ensure the safety work of injection-production well, storm valve 2 is that ground controls self-balancing type safety valve.
The switches that this storm valve 2 passes through two piston control system co- controlling pistons, two piston control systems individually with
Control pipeline is connected, and it can still be such that valve fully completes compared with the design of traditional valve under the relatively low environment of fluid pressure
Switching manipulation.When using, from ground to storm valve 2 in inject highly pressurised liquid, highly pressurised liquid enters piston through controlling pipeline
Chamber, promotes descent of piston, compression spring, and pushes up valve opening plate, realizes the opening of storm valve 2.The control pressure on ground is kept,
Storm valve 2 is set to keep it turned in normal state.When the abnormal conditions such as earthquake, ice condition, violent typhoon are run into, ground control
Pressing pressure is released, and valve plate resets under the action of the spring, realizes the emergency cut-off of storm valve 2, so as to prevent gas blowout accident, protect
Demonstrate,prove the job safety of injection-production well.It is state of the art that the ground controls self-balancing type safety valve, for example,《From flat
The reliability of SCSSV that weighs and the development of simplified design》Description, the utility model are also gived in one text
Embodiment does not make specific restriction to it herein.
Specifically, for the connection of control oil pipe 1 and production casing 5, steel wire operation switching regulator is provided with completion tubular column
Sliding sleeve 3.Through hole is provided with the cylinder of sliding sleeve 3, connected state is between oil pipe 1 and production casing 5 when through hole is opened, this
When can along oil pipe 1 inject annular protective liquid, or in annular space it is existing protection liquid be replaced.When through hole is closed, oil pipe 1
In state is separated between production casing 5, gas injection and gas production process can be carried out by oil pipe 1.By steel wire in oil pipe 1
Under enter or act blanking plug, the switch of through hole in sliding sleeve 3 can be controlled, realize the opening of sliding sleeve 3 and close, to carry out annular space guarantor
Protect replacement or the note gas production process of liquid.
The oil-gas reservoir type gas storage production-injection well completion tubing string that the utility model embodiment is provided is when in use, it is necessary to first by original
Tubing string takes out in well, in then entering injection-production well under oil-gas reservoir type gas storage production-injection well completion tubing string again.Detailed process is first to lead to
Cross oil pipe and pump into the KCl aqueous solution and degradable well killing fluid, while observing pump pressure, i.e. stopping pumps into process after pump pressure is significantly raised.
Sliding sleeve in former well on tubing string is opened by steel wire operation, the degradable well killing fluid of direct circulation is temporarily blocked up to injection-production well.Then,
Remove christmas tree, load onto preventer and pressure testing to qualified.Slowly above carry tubing string in former well, the packing in former well to be determined on tubing string
Device solution is honored as a queen, and acts tubing string in former well.Enter gauguste cutter under in injection-production well, tube wall is cleaned.Then, successively by ball seat 9,
Permanent packer 4, sliding sleeve 3 (being closed), lower flowing joint 11, storm valve 2, upper flowing joint 10 are sequentially passed through
Hermetic seal screw thread oil pipe 1 connect and under enter injection-production well.The depth of setting of tubular body is proofreaded, oil pipe 1 is then suspended on note
Adopt the well head of well.Preventer is unloaded, christmas tree is installed, drifting operation is carried out again with gauguste cutter is entered under steel wire.Then, enter under stifled
Plug device, makes blanking plug be seated at sliding sleeve 3 and closes the bottom of oil pipe 1, and integrally carry out pressure testing to oil pipe 1 and christmas tree.Examination
After pressing lattice, act blanking plug with steel wire, then put into solvable ball 8, slowly suppress set packer 4.With entering sliding sleeve under steel wire
Shifting tool, opens sliding sleeve 3, then sliding sleeve shifting tool is taken out, and now sliding sleeve 3 is connected with oil pipe 1.Then just protected for annular space
Shield liquid, then emptied with nitrogen, specifically emptying depth can be adjusted according to stratum observed pressure when constructing.Enter sliding sleeve shifting down again
Position instrument, closedown sliding sleeve 3.Now, solvable ball 8 has dissolved in the presence of the KCl aqueous solution, makes the bottom of tubular body gradually
Depressurization.During depressurization, the pressure in tubular body is gradually released, so will not be to the card of packer 4
Watt larger active force is produced, move up the damage caused to the inwall of production casing 5 so as to avoid slips, it is ensured that packing
Device 4 sets effect, gas injection and the gas production process is smoothed out.Christmas tree gate open flow is opened, waits to spray and injection well
After interior isometric well killing fluid, christmas tree gate is closed, tidy up well site, you can carry out gas production operation or gas injection operation, realize day
The storage of right gas and take.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (6)
1. a kind of oil-gas reservoir type gas storage production-injection well completion tubing string, the completion tubular column includes：Multiple-tubing string (1), downhole safety
Valve (2), sliding sleeve (3), packer (4), production casing (5), protective casing (6), surface pipe (7), it is characterised in that described complete
Well casing post also includes solvable ball (8) and ball seat (9)；
The storm valve (2), the sliding sleeve (3), the packer (4), the ball seat (9) by the oil pipe (1) by
Sequentially connected under up to, and form tubular body, and the storm valve (2) top is provided with the oil pipe (1), the oil
Pipe (1) is connected to the well head of injection-production well；The tubular body is suspended at by the production casing (5) by the packer (4)
Inwall on, and the protective casing (6) is sleeved on the outside of the production casing (5), and the surface pipe (7) is sleeved on
The outside of the protective casing (6)；
Ball seat (9) middle part is provided with and is adapted with the solvable ball (8), and the ball groove for connecting up and down；The solvable ball
(8) enter the tubular body from the oil pipe (1) of the well head, and fall into the closure ball groove in the ball seat (9).
2. completion tubular column according to claim 1, it is characterised in that the completion tubular column also includes upper flowing pipe nipple (10)
With lower flowing pipe nipple (11), the top of upper flowing pipe nipple (10) is connected and turns on the oil pipe (1), bottom and the well
The top of lower safety valve (2) connects and turns on, the bottom at the lower top and the storm valve (2) for flowing pipe nipple (11)
Connect and turn on, bottom is connected and turns on another oil pipe (1).
3. completion tubular column according to claim 1, it is characterised in that the sidewall thickness of the flowing pipe nipple (10) is
14.5-17.5mm。
4. completion tubular column according to claim 1, it is characterised in that the distance from bottom gas-bearing reservoir (12) of the ball seat (9)
Coboundary 50-60m.
5. completion tubular column according to claim 4, it is characterised in that the bottom of the production casing (5) is located at the storage
Below gas-bearing formation (12) lower boundary at 80-100m.
6. completion tubular column according to claim 1, it is characterised in that the packer (4) is permanent packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057852.5U CN206205797U (en) | 2016-09-14 | 2016-09-14 | Oil and gas reservoir type gas storage injection and production well completion pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057852.5U CN206205797U (en) | 2016-09-14 | 2016-09-14 | Oil and gas reservoir type gas storage injection and production well completion pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206205797U true CN206205797U (en) | 2017-05-31 |
Family
ID=58760433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057852.5U Active CN206205797U (en) | 2016-09-14 | 2016-09-14 | Oil and gas reservoir type gas storage injection and production well completion pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206205797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081534A (en) * | 2019-06-14 | 2020-12-15 | 中国石油化工股份有限公司 | Anti-erosion injection-production pipe column structure |
| CN112647857A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Injection-production string and well completion method using same |
| CN114427390A (en) * | 2020-09-02 | 2022-05-03 | 中国石油化工股份有限公司 | Salt-removing and salt-preventing injection-production integrated pipe column |
-
2016
- 2016-09-14 CN CN201621057852.5U patent/CN206205797U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081534A (en) * | 2019-06-14 | 2020-12-15 | 中国石油化工股份有限公司 | Anti-erosion injection-production pipe column structure |
| CN112081534B (en) * | 2019-06-14 | 2022-06-28 | 中国石油化工股份有限公司 | Anti-erosion injection-production pipe column structure |
| CN112647857A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Injection-production string and well completion method using same |
| CN112647857B (en) * | 2019-10-12 | 2022-11-25 | 中国石油化工股份有限公司 | Injection-production string and well completion method using same |
| CN114427390A (en) * | 2020-09-02 | 2022-05-03 | 中国石油化工股份有限公司 | Salt-removing and salt-preventing injection-production integrated pipe column |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105064940B (en) | A kind of built-in coiled tubing completion tubular column and construction method | |
| CA2611101A1 (en) | Method and apparatus for continuously injecting fluid in a wellbore while maintaining safety valve operation | |
| CN109736737B (en) | Method for snubbing tripping of reservoir gas drilling well | |
| CN104343400B (en) | The controllable workover treatment equipment of no killing well and its operational method | |
| CN206205797U (en) | Oil and gas reservoir type gas storage injection and production well completion pipe string | |
| CN104153753A (en) | Horizontal well volume fracturing tubular column and method based on conventional oil tube pressure dragging | |
| CN101775977B (en) | Dual-tube injection well safety production string | |
| CN204402451U (en) | A kind of hydraulic control single flow device for the protection of underground double-pipe annular space | |
| BRPI1105408B1 (en) | wellhead assembly and flow control method through a wellhead assembly | |
| CN103912257B (en) | A kind of dragging multiple fracturing device with pressure | |
| CN104963634B (en) | Method for tripping sucker rod | |
| CN202900175U (en) | Pressure measuring well completion pipe string for suspension pressure gauge of gas storage | |
| CN104563872B (en) | Blockage resisting self-filling-type float collar | |
| CN205858311U (en) | A kind of bore hole staged fracturing completion tubular column | |
| CN204754881U (en) | Double -barrelled gas well flow string parallels | |
| CN205000922U (en) | Built -in coiled tubing completion pipe string | |
| CN104879098B (en) | A kind of concentric double pipe gas well liquid loading tubing string | |
| CN205117297U (en) | Concentric double -barrelled gas well flow string | |
| CN204082115U (en) | Based on the horizontal well volume fracturing tubing string of conventional oil pipe dragging with pressure | |
| CN102444390A (en) | Blowout out-of-control emergency device | |
| CN106761530A (en) | A kind of emergent well-sealing device and method for deepwater drilling blowout out of control | |
| CN110778284A (en) | Suitable for CO 2Huff-puff injection-production integrated wellhead device and using method thereof | |
| CN207598221U (en) | A kind of layering squeezes sand preventing tool | |
| CN213980766U (en) | Non-metal composite coiled tubing oil production system for offshore platform | |
| CN211448593U (en) | Suitable for CO2Huff-puff injection-production integrated wellhead device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |