CN111197472A - Gas well underground composite efficient drainage throttling device - Google Patents

Gas well underground composite efficient drainage throttling device Download PDF

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Publication number
CN111197472A
CN111197472A CN201911425338.0A CN201911425338A CN111197472A CN 111197472 A CN111197472 A CN 111197472A CN 201911425338 A CN201911425338 A CN 201911425338A CN 111197472 A CN111197472 A CN 111197472A
Authority
CN
China
Prior art keywords
ratchet ring
gas well
seat
central tube
sleeved
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.)
Pending
Application number
CN201911425338.0A
Other languages
Chinese (zh)
Inventor
陈洪升
李大昕
吴文荟
吴文涛
杨小龙
杨卓
刘明建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ordos Tiantai Petroleum Technology Development Co Ltd
Original Assignee
Ordos Tiantai Petroleum Technology Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ordos Tiantai Petroleum Technology Development Co Ltd filed Critical Ordos Tiantai Petroleum Technology Development Co Ltd
Priority to CN201911425338.0A priority Critical patent/CN111197472A/en
Publication of CN111197472A publication Critical patent/CN111197472A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16Enhanced recovery methods for obtaining hydrocarbons
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121Lifting well fluids

Abstract

The invention discloses a gas well underground composite type efficient drainage throttling device which comprises an upper central tube and a lower central tube, wherein a lower end tube opening of the lower central tube is connected with an air faucet, a sand prevention cover is sleeved on the air faucet, a sealing tube and a lower pressing cap are sleeved on the lower central tube, a ratchet ring seat is arranged on the upper portion of the lower pressing cap, a ratchet ring is arranged on the ratchet ring seat, a ratchet ring centering sleeve and a ratchet ring upper pressing cap are arranged on the upper portion of the ratchet ring, a rubber ring is arranged on the upper portion of the ratchet ring upper pressing cap, a lower slip seat, a slip and an upper slip seat are arranged on the upper portion of the rubber ring, a salvaging sleeve rod is arranged on the upper portion of the upper slip seat, an atomizing cylinder is arranged at the upper end of the upper central tube, a first injection cavity, a rotational flow generation cavity and a second injection cavity which are sequentially connected are arranged in. The gas well production device is reasonable in design, can effectively improve the liquid carrying capacity of natural gas in the well shaft, reduces the formation of accumulated liquid in the well shaft, improves the productivity of the gas well, is good in using effect and is convenient to popularize.

Description

Gas well underground composite efficient drainage throttling device
Technical Field
The invention belongs to the technical field of natural gas exploitation, and particularly relates to a gas well underground composite efficient drainage throttling device.
Background
In the natural gas exploitation process, the bottom hole pressure of the gas well and the flowing speed of the natural gas are gradually reduced along with the duration of exploitation time, so that produced water or condensate liquid in a gas reservoir cannot be carried out of a shaft along with the natural gas flow, and therefore the produced water or condensate liquid is retained in the shaft. These liquids accumulate downhole over a period of time, forming a liquid column, creating additional hydrostatic back pressure on the gas reservoir, resulting in a continuous drop in gas well jet energy. Often, if this continues, the accumulated fluid column in the wellbore can kill the gas, causing the gas well to shut down. This phenomenon is known as "gas well liquid accumulation".
Gas well liquid loading can seriously affect the production of natural gas and must be timely drained from the wellbore. In order to solve the problem of liquid accumulation in a shaft of a gas well, more researches are carried out at home and abroad, at present, foam drainage and gas production are mainly used in a drainage process, and particularly, foam drainage can be implemented after the underground throttle is generally needed to be salvaged under the conditions of more liquid accumulation in the shaft, liquid accumulation below the throttle and the like, and the difficulty in salvaging the throttle is high, so that the method becomes an important factor for restricting the productivity of the gas well. Therefore, the liquid carrying capacity of the shaft is improved as much as possible, the formation of accumulated liquid in the shaft is reduced, the drainage time of the salvaging restrictor is prolonged to the maximum extent, and the productivity of the gas well is ensured to be fully exerted.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a gas well underground composite type efficient drainage throttling device aiming at the defects in the prior art, which is simple in structure, reasonable in design, convenient to implement and low in cost, can be applied to natural gas exploitation, effectively improves the liquid carrying capacity of natural gas in a shaft, reduces the formation of shaft accumulated liquid, effectively delays the drainage time of a salvage throttling device, improves the productivity of a gas well, is good in using effect and is convenient to popularize and use.
In order to solve the technical problems, the invention adopts the technical scheme that: a gas well underground composite type efficient drainage throttling device comprises an upper central tube and a lower central tube which are vertically connected together, wherein a lower end pipe orifice of the lower central tube is connected with an air faucet, a sand prevention cover connected to the lower central tube is sleeved on the air faucet, a sand prevention net is arranged in the sand prevention cover and fixed on the sand prevention cover through a sand prevention net pressing ring, a sealing tube and a lower pressing cap positioned on the upper portion of the sand prevention cover are sleeved on the lower central tube, a ratchet ring seat is arranged on the upper portion of the lower pressing cap, a ratchet ring sleeved on the sealing tube is arranged on the ratchet ring seat, a ratchet ring centering sleeve and a ratchet ring upper pressing cap positioned on the upper portion of the ratchet ring centering sleeve are arranged on the upper portion of the ratchet ring upper pressing cap, a rubber ring is arranged on the upper portion of the ratchet ring upper pressing cap, a lower slip seat and an upper slip seat positioned above the lower slip seat are arranged on the upper portion of the rubber ring, and slips are arranged between the lower slip seat and the, go up the upper portion of slip bowl and be provided with salvage loop bar, salvage the lower extreme of loop bar and connect on the center tube down through first shearing pin, the upper end of salvaging the loop bar surpasss the upper end of center tube down and is provided with salvages the head in the upper end of salvaging the loop bar, it is equipped with the centralizer to salvage the cover on the loop bar, the upper end of going up the center tube is provided with an atomizing section of thick bamboo, it sprays the chamber to be provided with the first chamber of spraying, whirl emergence chamber and the second that connect gradually in the atomizing section of thick bamboo and sprays the chamber, the first mouth of pipe intercommunication of spraying chamber and last center tube, the upper pot head of atomizing section of thick bamboo is.
According to the underground composite efficient drainage throttling device for the gas well, the atomizing cylinder is in threaded connection with the upper central pipe.
According to the underground composite efficient drainage throttling device for the gas well, the second shearing pin is arranged between the delivery head and the atomizing cylinder.
According to the gas well underground composite type efficient drainage throttling device, the first injection cavity is in a gradually-reducing and gradually-expanding shape.
According to the underground composite efficient drainage throttling device for the gas well, the inner wall of the rotational flow generating cavity is provided with the rotational flow channel.
According to the underground composite efficient drainage throttling device for the gas well, the second injection cavity is in a horn-shaped gradually-expanding shape.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure, reasonable design, convenient realization and low cost.
2. According to the invention, the atomization cylinder is arranged at the upper end of the upper central pipe, so that the accumulated liquid of the gas well is atomized, and the natural gas in the shaft is easier to carry.
3. The atomization cylinder is provided with the first injection cavity, the rotational flow generation cavity and the second injection cavity which are sequentially connected, so that accumulated liquid in a gas well can be sufficiently atomized, and the atomization effect is obvious.
4. The first spraying cavity of the invention adopts the sonic atomization principle, is designed into a tapered and gradually expanded shape, and can fully mix, entrain and homogenize gas and liquid.
5. The invention can be applied to natural gas exploitation, effectively improves the liquid carrying capacity of natural gas in a shaft, reduces the formation of shaft accumulated liquid, improves the productivity of a gas well, has good use effect and is convenient to popularize and use.
In conclusion, the gas well has the advantages of simple structure, reasonable design, convenience in implementation and low cost, can be applied to natural gas exploitation, effectively improves the liquid carrying capacity of natural gas in a shaft, reduces the formation of accumulated liquid in the shaft, improves the productivity of the gas well, has a good using effect, and is convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1-upper central tube; 2-lower central tube; 3, air tap;
4, sand prevention cover; 5, a sand control net; 6, pressing a sand control net;
7, sealing the tube; 8, pressing down the cap; 9-ratchet ring seat;
10-ratchet ring; 11-a ratchet ring righting sleeve; 12-pressing a cap on the ratchet ring;
13-rubber ring; 14-lower slip seat; 15-mounting a slip seat;
16-slips; 17-salvaging a loop bar; 18 — a first shear pin;
19-fishing head; 20-an atomizing cylinder; 21-a first ejection chamber;
22-a swirl generating chamber; 23-a second ejection chamber; 24-a delivery head;
25 — a second shear pin; 26-centralizer.
Detailed Description
As shown in fig. 1, the gas well downhole composite type efficient drainage throttling device comprises an upper central tube 1 and a lower central tube 2 which are vertically connected together, wherein a lower end pipe orifice of the lower central tube 2 is connected with an air tap 3, the air tap 3 is sleeved with a sand prevention cover 4 connected on the lower central tube 2, a sand prevention net 5 is arranged in the sand prevention cover 4, the sand prevention net 5 is fixed on the sand prevention cover 4 through a sand prevention net compression ring 6, the lower central tube 2 is sleeved with a sealing tube 7 and a lower compression cap 8 positioned on the upper portion of the sand prevention cover 4, the upper portion of the lower compression cap 8 is provided with a ratchet ring seat 9, the ratchet ring seat 9 is provided with a ratchet ring 10 sleeved on the sealing tube 7, the upper portion of the ratchet ring 10 is provided with a ratchet ring centering sleeve 11 and a ratchet ring upper compression cap 12 positioned on the upper portion of the ratchet ring centering sleeve 11, and the upper portion of the ratchet ring upper compression cap 12 is provided with a, the upper portion of rubber ring 13 is provided with slips seat 14 down and is located the last slips seat 15 of slips seat 14 top down, be provided with slips 16 between slips seat 14 and the last slips seat 15 down, the upper portion of going up slips seat 15 is provided with salvage loop bar 17, salvage loop bar 17's lower extreme is connected on center tube 2 down through first shear pin 18, salvage loop bar 17's upper end surpasss the upper end of center tube 2 down and is provided with salvage head 19 in salvage loop bar 17's upper end, the cover is equipped with centralizer 26 on salvage loop bar 17, the upper end of going up center tube 1 is provided with atomizing barrel 20, be provided with the first chamber 21 that sprays that connects gradually, whirl emergence chamber 22 and second spray chamber 23 in the atomizing barrel 20, first chamber 21 and the mouth of pipe intercommunication of last center tube 1, the pot head 24 is thrown to the pot head of atomizing barrel 20's upper pot head.
In this embodiment, the atomizing cylinder 20 is screwed to the upper center tube 1.
In this embodiment, a second shear pin 25 is disposed between the delivery head 24 and the atomizing barrel 20.
In this embodiment, the first injection chamber 21 has a tapered shape.
In specific implementation, the first spraying cavity 21 is designed by adopting a sonic atomization principle, and the throat diameter of the first spraying cavity 21 is 1.0 mm-2.0 mm.
In this embodiment, the inner wall of the swirling flow generating chamber 22 is provided with a swirling flow passage.
In this embodiment, the second injection chamber 23 has a flared diverging shape.
When the device is used, the device is sent into a shaft of a gas well through the delivery head 24, then the delivery head 24 is separated from the atomizing cylinder 20, the delivery head 24 is pulled away from the shaft, and after the device enters a working state, the natural gas in the gas well shaft passes through the sand control net 5 and moves upwards along the lower central tube 2 and the upper central tube 1, when the natural gas passes through the atomizing cylinder 20, the first spraying cavity 21 adopts the sonic atomizing principle, strong gas-liquid entrainment, shearing and mixing are formed at the throat part of the first injection cavity 21, liquid is changed into extremely tiny liquid drops, along with gradual expansion of the cavity, the gas-liquid speed is reduced, the gas and the liquid are continuously mixed, entrained and homogenized to realize first-step atomization, then the rotational flow generation cavity 22 adopts the rotational flow atomization principle, further atomizing the gas-liquid, the second injection cavity 23 is designed into a horn-shaped gradually-expanding shape, the flow area is increased, and throttling and pressure reduction of the gas-liquid-carrying natural gas are realized.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims (6)

1. The utility model provides a gas well is compound high-efficient drainage throttling arrangement in pit, includes vertical last center tube (1) and lower center tube (2) that link together, its characterized in that: the lower end pipe orifice of the lower central pipe (2) is connected with an air tap (3), the air tap (3) is sleeved with a sand control cover (4) connected to the lower central pipe (2), a sand control net (5) is arranged in the sand control cover (4), the sand control net (5) is fixed on the sand control cover (4) through a sand control net pressing ring (6), the lower central pipe (2) is sleeved with a sealing pipe (7) and a lower pressing cap (8) positioned on the upper part of the sand control cover (4), the upper part of the lower pressing cap (8) is provided with a ratchet ring seat (9), the ratchet ring seat (9) is provided with a ratchet ring (10) sleeved on the sealing pipe (7), the upper part of the ratchet ring (10) is provided with a ratchet ring centering sleeve (11) and a ratchet ring upper pressing cap (12) positioned on the upper part of the ratchet ring centering sleeve (11), and the upper part of the ratchet ring upper pressing cap (12) is provided with a rubber ring (13), the upper portion of the rubber ring (13) is provided with a lower slip seat (14) and an upper slip seat (15) positioned above the lower slip seat (14), a slip (16) is arranged between the lower slip seat (14) and the upper slip seat (15), the upper portion of the upper slip seat (15) is provided with a fishing sleeve rod (17), the lower end of the fishing sleeve rod (17) is connected to the lower central tube (2) through a first shearing pin (18), the upper end of the fishing sleeve rod (17) exceeds the upper end of the lower central tube (2), the upper end of the fishing sleeve rod (17) is provided with a fishing head (19), the fishing sleeve rod (17) is sleeved with a centralizer (26), the upper end of the upper central tube (1) is provided with an atomizing barrel (20), and a first injection cavity (21), a rotational flow generation cavity (22) and a second injection cavity (23) which are sequentially connected are arranged in the atomizing barrel (20), the first injection cavity (21) is communicated with the pipe orifice of the upper central pipe (1), and the upper end of the atomizing cylinder (20) is sleeved with a delivery head (24).
2. A gas well downhole composite type efficient drainage throttling device as claimed in claim 1, wherein: the atomizing cylinder (20) is in threaded connection with the upper central tube (1).
3. A gas well downhole composite type efficient drainage throttling device as claimed in claim 1, wherein: and a second shearing pin (25) is arranged between the delivery head (24) and the atomizing cylinder (20).
4. A gas well downhole composite type efficient drainage throttling device as claimed in claim 1, wherein: the first injection cavity (21) is internally provided with a tapered and divergent shape.
5. A gas well downhole composite type efficient drainage throttling device as claimed in claim 1, wherein: and a swirling flow channel is arranged on the inner wall of the swirling flow generating cavity (22).
6. A gas well downhole composite type efficient drainage throttling device as claimed in claim 1, wherein: the second injection cavity (23) is internally in a flared divergent shape.
CN201911425338.0A 2019-12-31 2019-12-31 Gas well underground composite efficient drainage throttling device Pending CN111197472A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911425338.0A CN111197472A (en) 2019-12-31 2019-12-31 Gas well underground composite efficient drainage throttling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911425338.0A CN111197472A (en) 2019-12-31 2019-12-31 Gas well underground composite efficient drainage throttling device

Publications (1)

Publication Number Publication Date
CN111197472A true CN111197472A (en) 2020-05-26

Family

ID=70745425

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911425338.0A Pending CN111197472A (en) 2019-12-31 2019-12-31 Gas well underground composite efficient drainage throttling device

Country Status (1)

Country Link
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1334897A (en) * 1998-12-31 2002-02-06 国际壳牌研究有限公司 Method for removing condensables from natural gas stream
US20060213652A1 (en) * 2004-08-09 2006-09-28 Sorowell Production Services Llc Device for improving oil and gas recovery in wells
CN2851558Y (en) * 2005-08-09 2006-12-27 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 Water-withdrawal gas-production swirl atomizer
CN201778776U (en) * 2010-08-25 2011-03-30 中国石油天然气股份有限公司 Reverse double-helix centrifugal jet downhole throttle
CN104806203A (en) * 2014-08-06 2015-07-29 杭建春 Draining and atomizing throttling device
CN106837266A (en) * 2016-12-26 2017-06-13 中国石油天然气股份有限公司 Gas well drainage underground gas production instrument based on jet with vortex one
CN107060696A (en) * 2017-03-21 2017-08-18 宁夏嘉润石油工程技术有限公司 A kind of pneumatic water drainage gas production device and its application method
CN206554895U (en) * 2017-01-17 2017-10-13 咸阳荣达石油技术服务有限公司 A kind of underground throttle device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1334897A (en) * 1998-12-31 2002-02-06 国际壳牌研究有限公司 Method for removing condensables from natural gas stream
US20060213652A1 (en) * 2004-08-09 2006-09-28 Sorowell Production Services Llc Device for improving oil and gas recovery in wells
CN2851558Y (en) * 2005-08-09 2006-12-27 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 Water-withdrawal gas-production swirl atomizer
CN201778776U (en) * 2010-08-25 2011-03-30 中国石油天然气股份有限公司 Reverse double-helix centrifugal jet downhole throttle
CN104806203A (en) * 2014-08-06 2015-07-29 杭建春 Draining and atomizing throttling device
CN106837266A (en) * 2016-12-26 2017-06-13 中国石油天然气股份有限公司 Gas well drainage underground gas production instrument based on jet with vortex one
CN206554895U (en) * 2017-01-17 2017-10-13 咸阳荣达石油技术服务有限公司 A kind of underground throttle device
CN107060696A (en) * 2017-03-21 2017-08-18 宁夏嘉润石油工程技术有限公司 A kind of pneumatic water drainage gas production device and its application method

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