CN209179736U - A kind of coal bed gas ground vertical well is anti-to spit sand device - Google Patents
A kind of coal bed gas ground vertical well is anti-to spit sand device Download PDFInfo
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- CN209179736U CN209179736U CN201821731040.3U CN201821731040U CN209179736U CN 209179736 U CN209179736 U CN 209179736U CN 201821731040 U CN201821731040 U CN 201821731040U CN 209179736 U CN209179736 U CN 209179736U
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Abstract
The utility model belongs to coal bed gas ground vertical well extraction coal bed gas field, and specifically a kind of coal bed gas ground vertical well is anti-to spit sand device.Sand tool and mining system are spat including anti-, it is anti-to spit the top and bottom that sand tool is set to coal bed fracturing section, prevent spitting at the top of sand tool and be connect with extraction system, anti-sand tool of spitting includes support compression packer, sand control screen, oil pipe short circuit, silk plug and the double public screw threads of variable diameter；Extraction system includes sucker rod, oil pipe, tubing pump, tail pipe, pumping unit and donkey plait.The utility model can effectively prevent vertical well fracturing propping agents during mining in coal bed gas ground to return spitting, realize continuous, stable, lasting, the efficient mining of coal bed gas well.
Description
Technical field
The utility model belongs to coal bed gas ground vertical well extraction coal bed gas field, and specifically a kind of coal bed gas ground is vertical
Well is anti-to spit sand device.
Background technique
Coal seam belongs to typical low-porosity and low-permeability reservoir, carries out cbm development to it to obtain industrialness air-flow and coal
Layer gas well high yield must carry out coal seam reservoirs transformation.Coal seam is carried out currently, coal bed gas well uses active water to carry quartz sand substantially
Hydraulic fracturing reservoir reconstruction, to improve the anti-reflection of coal seam, anatonosis and coal bed gas guiding ability.During coal bed gas well mining, portion
Point gas well is because mining intensity is excessive, casing pressure control is unreasonable, air-flow opens caused by putting suddenly etc. that bottom hole pressure difference is excessive to be caused to store up coal suddenly
The quartz sand that layer plays supporting role largely return spit, serious " speed quick " effect occurs for coal seam reservoirs, greatly reduce coal seam reservoirs
Permeability.Meanwhile it increasing and burying the down-hole accidents such as pump, holddown probability and workover treatment number etc., and then affecting coal bed gas well
Mining effect.For this purpose, having invented, a kind of coal bed gas ground vertical well is anti-to spit the efficient mining technique of sand.The technique have principle and
The features such as structurally simple, economical reasonable, easy to operate.It is promoted and applied, and can effectively solve coal bed gas ground vertical well mining mistake
Fracturing propping agents in journey, which return, spits problem, realizes continuous, stable, lasting, the efficient mining of coal bed gas well.
Summary of the invention
The utility model is in order to solve coal bed gas ground vertical well mining intensity is excessive, casing pressure manages unreasonable, air-flow
Suddenly open put suddenly it is equal under the conditions of fracturing propping agents largely return and spit, cause coal bed gas well to bury the down-hole accidents such as pump, holddown and occur and seriously
The problems such as influencing continuous, stable, lasting, the efficient mining and stable high yield of coal bed gas well, it is vertical to provide a kind of coal bed gas ground
Well is anti-to spit sand device.
The utility model takes following technical scheme: a kind of coal bed gas ground vertical well is anti-to spit sand device, including prevents spitting sand
Tool and mining system, it is anti-to spit the top and bottom that sand tool is set to coal bed fracturing section, it is anti-to spit sand tool top and extraction system
It unites and connects, anti-sand tool of spitting includes support compression packer, sand control screen, oil pipe short circuit, silk plug and the public screw threads of variable diameter pair, is prevented
The screen-aperture of sand sieve pipe is less than particulate fracturing propping agents partial size, and sand control screen both ends are sealed by support compression packer respectively
Stifled, sand control screen lower part is shorted connection by the double public screw threads of variable diameter and oil pipe, and oil pipe is shorted bottom and connects silk plug；Extraction system packet
Sucker rod, oil pipe, tubing pump, tail pipe, pumping unit and donkey plait are included, using the double public silks of variable diameter between tail pipe and sand control screen top
Button connection, tail pipe connect with tubing pump, and the pump barrel of tubing pump is connect with oil pipe, and the pump core of tubing pump is connect with sucker rod；Oil pumping
Bar upper end connects with polished rod, and polished rod is connect with donkey plait, and donkey plait is connect with pumping unit.
Specific construction technique is as follows:
In the sand control screen of perforating and fracturing interval installation aperture special elastic Fiber Materials more slightly smaller than production casing, screen casing
Screen-aperture be less than particulate fracturing propping agents partial size, prevent fracturing propping agents from returning and spit；In perforating and fracturing interval upper and lower part
It is tightly blocked with support compression packer respectively, prevents fracturing propping agents crossfire up and down；In special elastic Fiber Materials
Sand control screen lower part be shorted and connect using the oil pipe of the double public screw thread of variable diameter and 4m long；Silk plug is connected under short circuit；Special elastic
Using the double public screwed connections of variable diameter between the sand control screen top of Fiber Materials and tail pipe；Tail pipe connects with tubing pump；Tubing pump
Pump barrel connect with oil pipe, pump core is connect with sucker rod；Sucker rod connects with polished rod on well head, horse head part polished rod and donkey pigtail
Son connection, donkey plait are connect with pumping unit.
Compared with prior art, the utility model has the advantage that
(1) it effectively prevent fracturing propping agents to return to spit, realizes continuous, stable, lasting, the efficient mining of coal bed gas well.Pass through
The sand control screen of more slightly smaller than production casing size is installed in perforating and fracturing section, and perforating and fracturing section upper and lower part packer into
Row is tight to be blocked.The technique can effectively prevent vertical well fracturing propping agents during mining in coal bed gas ground to return spitting, and realize coal
Continuous, stable, lasting, the efficient mining of layer gas well.
(2) it reduces underground and buries the generation of the down-hole accidents such as pump, holddown and workover treatment number.It is pressed during coal bed gas well mining
Split proppant largely returns that spit be the key that cause to bury the down-hole accidents such as pump, holddown, also increases workover treatment number and correlation
Operating cost.
(3) drillng operation drilling depth is reduced, operating cost is saved.In order to handle fracturing propping agents during coal bed gas well mining
It returning Tuhe and reduces to return and spit proppant and bury pump, holddown accident, coal bed gas ground vertical well is reserved with 30 under development layer position ~
The sand setting " pocket " of 40m not even depth.That is invented anti-spits sand technique, it is only necessary to 10m sand setting " mouth is reserved under development layer position
Bag " reduces drill footage and drilling well effect expense.
(4) principle and structure are simple and convenient to operate, and can be used in the coal bed gas ground vertical well of different hole diameter types.
Detailed description of the invention
Fig. 1 is Tthe utility model system structure chart；
1- polished rod in figure, 2- well head and device, 3- mono- open surface pipe, and 4- bis- opens production casing, 5- sucker rod, 6- oil
Pipe, 7- cementing concrete ring, 8- tubing pump, the bis- public screw threads of 9-, 10- tail pipe, 11- support compression packer, 12- sand control screen,
13- oil pipe is shorted, 14- silk plug, the double public screw threads of 15- variable diameter, the coal seam 16-, 17- fracturing fracture and fracturing propping agents, 18- oil pumping
Machine, 19- donkey plait.
Specific embodiment
It, below will be to the utility model to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Technical solution in embodiment is clearly and completely described, it is clear that described embodiment is a part of the utility model
Embodiment, instead of all the embodiments；Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of coal bed gas ground vertical well is anti-to spit sand device, including prevent spitting sand tool and mining system, prevent
The top and bottom that sand tool is set to coal bed fracturing section 16 are spat, anti-spit connect at the top of sand tool with extraction system, anti-to spit sand work
Tool includes support compression packer 11, sand control screen 12, oil pipe short circuit 13, silk plug 14 and the double public screw threads 15 of variable diameter, sand screen
The screen-aperture of pipe 12 is less than particulate fracturing propping agents partial size, and 12 both ends of sand control screen are respectively by 11 envelope of support compression packer
Stifled, 12 lower part of sand control screen is shorted 13 connections by the double public screw threads 15 of variable diameter and oil pipe, and oil pipe is shorted 13 bottoms and connects silk plug 14；
Extraction system includes sucker rod 5, oil pipe 6, tubing pump 8, tail pipe 10, pumping unit 18 and donkey plait 19, tail pipe 10 and sand control screen
It is connected between 12 tops using the double public screw threads 15 of variable diameter, tail pipe 10 connects with tubing pump 8, and the pump barrel and oil pipe 6 of tubing pump 8 connect
It connects, the pump core of tubing pump 8 is connect with sucker rod 5；5 upper end of sucker rod connects with polished rod 1, and polished rod 1 is connect with donkey plait 19, donkey pigtail
Son 19 is connect with pumping unit 18.
Specific construction technique is as follows:
In the sand control screen of perforating and fracturing interval installation aperture special elastic Fiber Materials more slightly smaller than production casing, screen casing
Screen-aperture be less than particulate fracturing propping agents partial size, prevent fracturing propping agents from returning and spit；In perforating and fracturing interval upper and lower part
It is tightly blocked with support compression packer respectively, prevents fracturing propping agents crossfire up and down；In special elastic Fiber Materials
Sand control screen lower part be shorted and connect using the oil pipe of the double public screw thread of variable diameter and 4m long；Silk plug is connected under short circuit；Special elastic
Using the double public screwed connections of variable diameter between the sand control screen top of Fiber Materials and tail pipe；Tail pipe connects with tubing pump；Tubing pump
Pump barrel connect with oil pipe, pump core is connect with sucker rod；Sucker rod connects with polished rod on well head, horse head part polished rod and donkey pigtail
Son connection, donkey plait are connect with pumping unit.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (1)
1. a kind of coal bed gas ground vertical well is anti-to spit sand device, it is characterised in that: sand tool and mining system are spat including anti-, it is anti-to spit
Sand tool is set to the top and bottom of coal bed fracturing section (16), and anti-spit connect at the top of sand tool with extraction system, anti-to spit sand work
Tool includes support compression packer (11), sand control screen (12), oil pipe short circuit (13), silk plug (14) and the double public screw threads of variable diameter
(15), the screen-aperture of sand control screen (12) is less than particulate fracturing propping agents partial size, and sand control screen (12) both ends are respectively by supporting
Compression packer (11) blocks, and sand control screen (12) lower part is shorted (13) connection by the double public screw threads (15) of variable diameter and oil pipe,
Oil pipe is shorted (13) bottom connection silk plug (14)；Extraction system includes sucker rod (5), oil pipe (6), tubing pump (8), tail pipe
(10), pumping unit (18) and donkey plait (19), using the double public screw threads of variable diameter between tail pipe (10) and sand control screen (12) top
(15) it connects, tail pipe (10) connects with tubing pump (8), and the pump barrel of tubing pump (8) is connect with oil pipe (6), the pump core of tubing pump (8)
It is connect with sucker rod (5)；Sucker rod (5) upper end connects with polished rod (1), and polished rod (1) is connect with donkey plait (19), donkey plait (19)
It is connect with pumping unit (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821731040.3U CN209179736U (en) | 2018-10-25 | 2018-10-25 | A kind of coal bed gas ground vertical well is anti-to spit sand device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821731040.3U CN209179736U (en) | 2018-10-25 | 2018-10-25 | A kind of coal bed gas ground vertical well is anti-to spit sand device |
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| Publication Number | Publication Date |
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| CN209179736U true CN209179736U (en) | 2019-07-30 |
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| CN201821731040.3U Active CN209179736U (en) | 2018-10-25 | 2018-10-25 | A kind of coal bed gas ground vertical well is anti-to spit sand device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021999A (en) * | 2020-03-11 | 2020-04-17 | 东营市海天石油科技有限责任公司 | Liquid drainage and gas production integrated pipe column |
-
2018
- 2018-10-25 CN CN201821731040.3U patent/CN209179736U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021999A (en) * | 2020-03-11 | 2020-04-17 | 东营市海天石油科技有限责任公司 | Liquid drainage and gas production integrated pipe column |
| CN111021999B (en) * | 2020-03-11 | 2020-07-24 | 东营市海天石油科技有限责任公司 | Liquid drainage and gas production integrated pipe column |
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