CN207245686U - A kind of coiled tubing tubular column unit - Google Patents
A kind of coiled tubing tubular column unit Download PDFInfo
- Publication number
- CN207245686U CN207245686U CN201720706873.3U CN201720706873U CN207245686U CN 207245686 U CN207245686 U CN 207245686U CN 201720706873 U CN201720706873 U CN 201720706873U CN 207245686 U CN207245686 U CN 207245686U
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- coiled tubing
- halogen
- row
- tubular column
- column unit
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Abstract
The utility model discloses a kind of coiled tubing tubular column unit, halogen dilatation is arranged for salt cave underground natural gas storage tank, the coiled tubing tubular column unit includes coiled tubing, oil pipe outer card connector, weighting tube, hydraulic safety connector, spin rinse instrument, coiled tubing bottom is connected by card connector outside oil pipe with weighting tube, and the other end of weighting tube is connected by hydraulic safety connector with spin rinse instrument.Row's halogen dilatation is carried out using coiled tubing tubular column unit, can be by coiled tubing in bottom of chamber or sediment, the sediment of blocking can effectively be washed open using spin rinse instrument, the row's of re-forming halogen passage, can effectively discharge tradition row's halogen tubing string can not arrange remaining bittern within the bottom of chamber bottom residue about 20% of halogen.
Description
Technical field
The utility model belongs to Oil ＆ Gas Storage and development of resources field, and in particular to a kind of coiled tubing tubular column unit, is used
In the discharge of salt hole air reserved storeroom bottom bittern.
Background technology
In salt hole air reserved storeroom process of construction, the material not soluble in water such as impurity and interlayer in rock salt, it is impossible to making chamber
During be discharged to outside cavity with bittern, but be deposited in cavity bottom.In view of interlayer have higher intensity and its
Failure mode is complicated, and the accumulation body shape difference formed after destruction is larger；Meanwhile the small block to differ mutually laminates in accumulation body
And support so that contain substantial amounts of hole in the accumulation body of formation, these holes are filled by bittern.These deposit volumes compared with
Greatly, cavity cumulative volume 20%-40% or so can generally be accounted for.
Gas injection row's halogen refers to salt cave underground natural gas storage tank individual well after experience drilling well, molten chamber are formed, in input note gas production production
Before operation, it is pressurized by main line come gas through the inner compressor that misses the stop, then the day of well head is reached to gas recovery well well head is noted by injection-gas manifold
Right gas is injected along underground injection-production column jacket and row's halogen tubing annulus, and the saturated bittern of salt cave underground natural gas storage tank intracavitary is from row's halogen tubing string
Discharge.As natural gas constantly infuses in a steady stream, the saturated bittern in cavity is continuously discharged, storing natural is finally reached
Gas and peak regulation, the purpose of emergent gas production.
During salt cave underground natural gas storage tank gas injection row's halogen at home and abroad, all it is that halogen tubing string is arranged by tripping in, utilizes injection
Natural gas and discharge bittern arrange halogen process to complete whole gas injection.The lower depth of halogen tubing string is arranged, for whether can fully note
Gas row halogen, at utmost using molten chamber cavity volume prevent at the same time gas injection row halogen during tubing string block have it is most important
Influence.Current gas injection arranges halogen technology as shown in Figure 1, according to the last time sonar to measure data and pipe after molten chamber
Column bottoms out data, is determined according to row's halogen tubing string apart from bottom of chamber 1.5-2.0 meters or so principle, after the completion of arranging halogen, arranges below the halogen mouth of pipe
Bittern can not be discharged from cavity.
Existing gas injection row halogen technology can not have row's halogen mouth of pipe with lower part and sediment gap site volume at present
Effect utilizes.Although the tripping in of row's halogen tubing string is too deep can to maximally utilise molten chamber cavity volume but be easy to cause gas injection row
Tubing string blocks during halogen, although tripping in too it is shallow can as far as possible avoid gas injection row halogen during tubing string occur block lose
The existing molten chamber cavity volume in part.This results in existing gas injection row's halogen method, and there are the defects of following 2 aspects：
(1) inside cavity bittern cannot be discharged all, cause cavity effective volume to waste.Due to salt hole air reserved storeroom cavity bottom
Portion is relatively large in diameter, and 70m can be generally reached by taking the salt hole air reserved storeroom of Jintan as an example, this means that the bittern that bottom of chamber can not discharge
Volume can reach 7000m3, and this partial volume can not carry out natural gas storage, as shown in Figure 2.
(2) pore volume in deposit can not be utilized.Since row's halogen tubing string can not be deep into deposit, nothing
Method discharges intrapore bittern, so as to form gas storage space.
Above-mentioned reason causes the waste of the effective storage volume of salt hole air reserved storeroom, improves making for the effectively molten cavity volume of unit
Chamber expense, while also reduce the peak modulation capacity of gas storage.
The content of the invention
The purpose of this utility model is to provide a kind of coiled tubing tubular column unit, which can be used for salt hole air reserved storeroom bottom
The discharge of portion's bittern, can rinse pipe shoe periphery mud, prevent tubing string bottom from blocking, on the one hand can ensure that tubing string is not stuck,
On the other hand, discharge opeing depth can be increased, achieve the purpose that enlarged cavity is held to greatest extent.
To achieve these goals, the utility model uses following technical scheme：
A kind of coiled tubing tubular column unit, including card connector outside coiled tubing, oil pipe, weighting tube, hydraulic safety connector,
Spin rinse instrument, its structure diagram is as shown in figure 4, coiled tubing bottom is connected by card connector outside oil pipe and weighting tube
Connect, the other end of weighting tube is connected by hydraulic safety connector with spin rinse instrument.
Further, the weight of the weighting tube is 500-800kg.
Further, the coiled tubing outside diameter is 50.8mm.
During using device row's halogen, bittern enters in coiled tubing on the outside of spin rinse instrument, discharges bittern.
When spin rinse instrument is blocked by outboard cavity bottom sediment during arranging halogen, at this time, square impact is injected from coiled tubing on ground
Water is washed down, rinses spin rinse tool jams sediment and outside sediment, the row's of being formed halogen continues to arrange halogen behind hole.
Compared with prior art, the utility model has the following advantages and beneficial effect：
(1) the utility model does not use fixing bolt to lock using coiled tubing as row's halogen pipeline, well head corollary apparatus
Coiled tubing position, continuously can above carry or lower drain line, reach the depth that can arbitrarily discharge bittern.And tradition row's halogen oil pipe, its
Bottom row's halogen mouth of pipe depth is completely fixed after installation is complete, and the tune of lower rafting halogen mouth of pipe depth can not be carried out during whole operation
It is whole.
(2) the advantages of being based on the 1st article, coiled tubing row halogen tubing string can be down toward cavity bottoms, and can deep enough bottom of chamber sediment
In into row's halogen, effectively arrange bittern in halogen bottom of chamber bottom and part sediment, tradition row's halogen oil pipe does not have this function.
(3) when sediment blocking occurs close to bottom sediment position, blocking can effectively be washed open using spin rinse instrument
Sediment, the row's of re-forming halogen passage, tradition row's halogen oil pipe do not have this function.
(4) coiled tubing can effectively discharge tradition row's halogen tubing string and can not arrange within the bottom of chamber bottom residue about 20% of halogen
Remaining bittern, is effectively increased the gas storage volume of cavity, has obvious economic benefit.
Brief description of the drawings
Fig. 1 is that halogen schematic diagram is arranged in conventional gas injection
Fig. 2 is remaining bittern schematic diagram after salt hole air reserved storeroom cavity form and gas injection row's halogen
Fig. 3 is that applications of coiled tubing unit described in the utility model is implemented to show in the method for salt cave underground natural gas storage tank row's halogen dilatation
It is intended to
Fig. 4 is the structure diagram of coiled tubing tubular column unit
Fig. 5 is the outer card connector structure schematic diagram of coiled tubing
Fig. 6 is hydraulic safety connector
Fig. 7 is coiled tubing spin rinse tool construction schematic diagram
Fig. 8 is well site floor plan
Wherein, 1- coiled tubings, the outer card connector of 2- oil pipes, 3- weighting tubes, 4- hydraulic safety connectors, 5- spin rinse works
Tool, 6- safety valves, 7- production casings, 8- injection-production column jackets, 9- row's halogen tubing strings, 10- annular protective liquids, 11- cementings, 12- is forever
Long packer, 13- give up, 14- natural gases, 15- bittern, 16- insoluble matters, 17- mudstone caprocks, 18- rock salts, 19- deposits,
20- well sites entrance, 21- Operation Tubing Aggregates, 22- injection heads, 23- blowout prevention boxes, 24- lubricators, 25- preventers, 26-50T cranes,
27- christmas trees, 28- working drums, the urgent self-closing valves of 29-, 30- toolhouses, 31- combustion cells, 32- ground face-pumping, 33- oil nozzles
Manifold, 34- separators, 35- fluid reservoirs, 36- infusion pumps, 37- clean water tanks.
Embodiment
Embodiment 1
A kind of coiled tubing tubular column unit, including card connector 2, weighting tube 3, hydraulic safe connect outside coiled tubing 1, oil pipe
First 4, spin rinse instrument 5, its structure diagram as shown in figure 4, coiled tubing 1 bottom by card connector outside oil pipe 2 with
Weighting tube 3 connects, and the other end of weighting tube 3 is connected by hydraulic safety connector 4 with spin rinse instrument 5.
Coiled tubing is connected using outside diameter Ф 50.8mm, wall thickness 4.45mm, internal diameter 41.9mm, grade of steel CT-90, oil pipe wild card
Connect device and use product shown in table 1, as shown in Figure 5.
The outer card connector parameter of 1 coiled tubing of table
| Continuous pipe size | Tool external diameter | Tool bore | Quantity | Bottom connects button-type | The place of production |
| 2.00" | 2-7/8" | 1.5" | 1 | 2-3/8"PAC | Britain TDI |
Weighting tube can be such that coiled tubing is kept in salt intracavitary vertically to reduce depth error, by calculating and testing, aggravate
Pipe weight is preferably 500-800kg.
Hydraulic safety connector is arranged as shown in fig. 6, since the outside diameter and spin rinse tool external diameter gap of coiled tubing are larger
Lift pipe string is there are card tubing string risk after liquid, and hydraulic safety connector is connect in spin rinse upper tool part, and when card tubing string can be from continuous oil
Pitching is suppressed in pipe, loses lower tool, acts coiled tubing.
Spin rinse instrument is as shown in fig. 7, the instrument has company underground by China Petroleum group Bohai Sea drilling project is limited
Technological service branch company produces, product type BH-XZCT-120.By carrying out laser slotted to the tool body surface, formed
Arrange halogen passage.Guide shoe is arranged at tool external diameter 120mm, bottom, prevents that well bottom ch ips enter in coiled tubing in discharge opeing process, mainly
There are 2：1. anti-gas lift liquid drainage：Instrument keeps unimpeded but rotary part not turn when halogen is arranged in gaslift；2. direct circulation rotation punching
Wash：Rotatable flushing is just being suppressed, near the deposit of shaft bottom when can wash the bottom of chamber deposit of certain volume open, be formed in bottom of chamber
The hole of certain size, reaches optimal discharge opeing depth.
Embodiment 2
The method for arranging halogen dilatation in salt cave underground natural gas storage tank using coiled tubing tubular column unit, its step are：
1. row's halogen operation carries out salt cave underground natural gas storage tank using conventional gas injection row's halogen technology, according to sonar to measure and note
Gas arrange halogen as a result, noted from existing salt cave underground natural gas storage tank filtered out in gas recovery well dilatation leeway is larger, dilatation economic benefit compared with
Good note gas recovery well is as dilatation target well.Exemplified by four mouthfuls of Jintan gas storage of selection has completed conventional gas injection row halogen cavity, often
It is low that rule gas injection row's halogen rear chamber utilization rate has height to have, and 70%~97%；Cavity volume liquid measure has and has few, 7000~65000m3If
Cavity hydrops is discharged 80%, then result of calculation such as following table.As can be seen from the table, liquid measure can be discharged in 5000~50000m3；Chamber
Body utilization rate will increase to more than 95%.
1 four oral cavity body gas injection row's halogen comparing table of table
Gas recovery well is noted according to the existing salt cave underground natural gas storage tank filtered out, by taking 3# wells as an example, determines the use of coiled tubing pipe
Halogen amount is arranged in column device plan, and estimation can discharge remaining bittern 20498m380%, about 16398m3。
2. coild tubing unit, ground corollary equipment and pipeline are installed
The inspection of the scene of a crime is carried out to the plan dilatation well well site condition filtered out, it is ensured that well site place and bearing capacity meet continuously
Oil pipe implement is marched into the arena and the requirement of safe construction, and continuous oil pipe operation well site horizontal layout is rationally set according to surveys
Figure, as shown in Figure 8.
In-site installation coild tubing unit, fluid reservoir, separator, the equipment such as face-pumping and manifold of ground, connect work
Make roller, automatic cut-off valve, choke manifold (ground water injecting pump), separator, fluid reservoir (combustion cell), halogen transmitting pump, Brine line,
Connection coild tubing unit hydraulic line, be intubated, measure oil pipe counts corrected device, lubricator, takes wellhead protecting platform.It is anti-
Only vehicle collides with or high-altitude junk injury of primary well production tree in operation process, and protective fence is installed additional in well head surrounding.Construction period will
Production tree covers, and is protected.
3. installing well head well control device and coiled tubing tubular column unit, well head well control device performing leak test is carried out
(1) former well christmas tree cap and upper flange are torn open, adapter flange, gate, coiled tubing preventer group, installation are installed successively
Coiled tubing lubricator, blowout prevention box, injection head, under lower coiled tubing to first half envelope flashboard of preventer, close preventer, beat
Blowout prevention box is opened, from 25 megapascal of coiled tubing working drum pressure testing, 30 minutes blowout prevention box ne-leakages, pressure drop are no more than 0.7 megapascal
Qualification, after experiment second partly seals flashboard, shear ram to qualification, is dismantled from lubricator and preventer junction.
(2) card connector, weighting tube, hydraulic safety connector outside the bottom connected pipes of coiled tubing, install pulling plate, examination
Pulling force 150KN, 25 megapascal of clear water pressure testing are tested, 30 minutes sealing position ne-leakages, pressure drop are qualification no more than 0.7 megapascal.Lay down
Pulling plate, installs spin rinse instrument, to blowout preventer and lubricator.
(3) with clear water to adapter flange, gate, preventer group, lubricator, blowout prevention box, coiled tubing, working drum pipe
Converge, 21 megapascal of choke manifold pressure testing, pressure drop in 30 minutes is qualification no more than 0.7 megapascal；With clear water to separator, separator downstream
2.5 megapascal of gas-liquid pipeline pressure testing, pressure drop in 30 minutes are qualification no more than 0.7 megapascal；Master valve is closed, to adapter flange, blowout prevention
Device group, lubricator, blowout prevention box, coiled tubing, working drum manifold, 15 megapascal of choke manifold gas pressure testing, pressure drop in 30 minutes are little
It is qualified in 0.7 megapascal.
4. lower coiled tubing tubular column unit, gas injection row's halogen
Confirm that christmas tree and storm valve are opened, counter clear, aligning tool bottom depth, lower coiled tubing pipe
Column device, control lowering velocity are less than 6 ms/min, and instrument, which goes out after 7 inch note adopts casing, controls lowering velocity less than 1.5 ms/min, close
Cut and pay attention to suspending weight change, bottom out pressurization and be less than 5KN, visit 1-3 times again, above carry 0-0.5 meters, adopted from coiled tubing tubular column unit with note
Tubing annulus natural gas injection, discharges bittern, discharge bittern enters separator by pipeline, by dividing from coiled tubing tubular column unit
Separate the natural gas taken out of of row's halogen from device, gas burn-up, liquid into tank by defeated outside halogen transmitting pump, until bittern is not then exhausted from.
Sediment halogen side by side is blocked 5. rinsing
Coiled tubing tubular column unit is above carried 0-0.5 meters again, the row's of closing halogen flow valve, ground switching row's halogen flow is extremely
Flow is rinsed, starts ground clarified water pump, clear water access pipeline valve is opened, clear water is injected bottom of chamber by coiled tubing, to well
Bottom spin rinse instrument and peripheral sediment are rinsed, and have arranged halogen volume with reference to step 1) and existing sonar to measure result calculates
Residue does not discharge bittern volume, does not discharge bittern volume according to residue and combines cavity geometry, continues to transfer coiled tubing tubing string
Device carries out gas injection row's halogen to accumulative row's halogen volume and reaches target row's halogen volume；
6. take out coiled tubing tubular column unit
Row's halogen terminates, and keeps borehole pressure, taking-up coiled tubing tubular column unit with pressure and row's halogen instrument.If above carrying and being hampered
80% of load no more than coiled tubing ultimate tensile strength is carried in control, if slowly activity is repeatedly still unable to unfreezing up and down,
Then clear water just rinses, and side trimming rises.If still to no effect, pitching builds the pressure and destroys hydraulic safety connector and rotation out of coiled tubing
Flushing tool takes out top coiled tubing.
3# cavity bottoms add up row's halogen and finish, and last two months, add up discharge cavity bottom bittern 16200m3, cavity has
Utilization rate is imitated to be improved to 98.6% by 93.211%.100 yuan/m of chamber synthesis cost is made according to Jintan salt hole air reserved storeroom3Estimation,
About 1,600,000 yuan of direct economic benefit.
Subordinate list 2 is constructed required equipment list.
Table 2 is constructed required equipment list
Claims (3)
1. a kind of coiled tubing tubular column unit, including coiled tubing（1）, it is characterised in that：Further include the outer card connector of oil pipe
（2）, weighting tube（3）, hydraulic safety connector（4）, spin rinse instrument（5）, coiled tubing（1）Bottom connected by oil pipe wild card
Connect device（2）With weighting tube（3）Connection, weighting tube（3）The other end pass through hydraulic safety connector（4）With spin rinse instrument（5）
Connection.
2. coiled tubing tubular column unit according to claim 1, it is characterised in that：The weighting tube（3）Weight be
500-800kg。
3. coiled tubing tubular column unit according to claim 1, it is characterised in that：The coiled tubing（1）Outside diameter
50.8mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720706873.3U CN207245686U (en) | 2017-06-16 | 2017-06-16 | A kind of coiled tubing tubular column unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720706873.3U CN207245686U (en) | 2017-06-16 | 2017-06-16 | A kind of coiled tubing tubular column unit |
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| CN207245686U true CN207245686U (en) | 2018-04-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152264A (en) * | 2017-06-16 | 2017-09-12 | 中国石油天然气股份有限公司西气东输管道分公司 | Coiled tubing tubular column unit and its method for arranging halogen dilatation in salt cave underground natural gas storage tank |
| CN108999593A (en) * | 2018-10-08 | 2018-12-14 | 大庆荣氏采油技术开发有限公司 | A kind of oil well pipe set fouling cleaning method |
| CN110829284A (en) * | 2019-10-20 | 2020-02-21 | 大庆油田有限责任公司 | In-pipe cable presetting and connecting process method and device |
| CN112360415A (en) * | 2020-11-10 | 2021-02-12 | 中国科学院武汉岩土力学研究所 | Rotation type pressure pulse converter and hydraulic fracturing priming device |
-
2017
- 2017-06-16 CN CN201720706873.3U patent/CN207245686U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152264A (en) * | 2017-06-16 | 2017-09-12 | 中国石油天然气股份有限公司西气东输管道分公司 | Coiled tubing tubular column unit and its method for arranging halogen dilatation in salt cave underground natural gas storage tank |
| CN107152264B (en) * | 2017-06-16 | 2023-07-04 | 中国石油天然气股份有限公司西气东输管道分公司 | Coiled tubing string device and brine-discharging capacity-expanding method thereof in salt cavern underground gas storage |
| CN108999593A (en) * | 2018-10-08 | 2018-12-14 | 大庆荣氏采油技术开发有限公司 | A kind of oil well pipe set fouling cleaning method |
| CN110829284A (en) * | 2019-10-20 | 2020-02-21 | 大庆油田有限责任公司 | In-pipe cable presetting and connecting process method and device |
| CN110829284B (en) * | 2019-10-20 | 2021-04-13 | 大庆油田有限责任公司 | In-pipe cable presetting and connecting process method and device |
| CN112360415A (en) * | 2020-11-10 | 2021-02-12 | 中国科学院武汉岩土力学研究所 | Rotation type pressure pulse converter and hydraulic fracturing priming device |
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