CN102383766B - Self-heating natural gas hydrate preventing device - Google Patents
Self-heating natural gas hydrate preventing device Download PDFInfo
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- CN102383766B CN102383766B CN2011103130484A CN201110313048A CN102383766B CN 102383766 B CN102383766 B CN 102383766B CN 2011103130484 A CN2011103130484 A CN 2011103130484A CN 201110313048 A CN201110313048 A CN 201110313048A CN 102383766 B CN102383766 B CN 102383766B
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- heating
- natural gas
- pit shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a self-heating natural gas hydrate preventing device used for preventing the generation of natural gas hydrate, which can maintain the safety production of a gas well and improve the collection ratio of gas reservoir. The technical scheme is as follows: the device consists of a generating system, an electric heating system and a fixing system in a pipeline; impellers are concentrically arranged on a rotating shaft, partition plates are arranged between the adjacent impellers for division, the rotating shaft is connected with a generator and a overspeed protection device, and a gas inlet is arranged below the partition plates; a lead led out from the generating system is connected with an overheat protection device and a heating resistance wire screen, and a gas outlet is installed above the heating resistance wire screen; and a shell is installed outside the generating system and the electric heating system, a fishing head is installed at the top end of the shell, a sealing rubber ring is arranged in a gap between the shell and the wall of a shaft oil pipe, and an upper slip and a lower slip are installed between the device and the shaft oil pipe. The self-heating natural gas hydrate preventing device works by depending on stratum gas, heats continuously and stably, has obvious effects on increasing yield and saving energy, conducts the fishing operation by adopting steel wires, is convenient to operate and manage and can be applicable to production wells of natural gas.
Description
Technical field
The present invention relates to a kind of spontaneous heating preventing and controlling natural gas hydrate device that can stop up pit shaft be used to the generation that prevents and treats natural gas well pit shaft internal cause gas hydrates.
Background technology
In the gas extraction process, natural gas is flowed in pit shaft by stratum, arrives ground through pit shaft.In this process, the temperature of natural gas fluid constantly reduces in pit shaft, and when gas temperature generated temperature lower than hydrate, gas hydrates can generate in pit shaft, can stop up pit shaft when serious.
The method that control Wellbore of Gas Wells gas hydrates commonly used generate mainly contains chemical inhibitor injection method and downhole choke method.The chemical inhibitor injection method is by ground, to inject chemical agent to suppress the generation of gas hydrates at pit shaft, need to regularly inject, and has the shortcomings such as cost is large, operation is dangerous, inadequate safety and environmental protection.The downhole choke technology is gas after the heat energy heating throttling of dependence stratum, compound generates in case harness the river, but for the larger gas well of flow, the heat source insufficiency that stratum provides is to be heated to safe temperature by wellbore fluids at short notice, and now pit shaft easily forms Hydrate Plugging.
The present invention is electric energy by gas kinetic transformation in pit shaft, and natural gas fluid in recycling Electrothermic wire heating pit shaft, reached the purpose that control pit shaft gas hydrates generate.When the present invention uses separately, provide electric energy or injected material without ground, easy to operate, safety and environmental protection, energy conservation.The present invention also can use simultaneously with chemical inhibitor injection method or downhole choke method, to improve the effect of control gas hydrates.
Through the document investigation, the report of thinking, product, process design method and the theoretical basis research relevant to self-heating natural gas hydrate preventing device and method aspect the generation of control gas hydrates.
Summary of the invention
The objective of the invention is: in order to safeguard the gas well safety in production and to improve gas deposit recovery efficiency, utilization flows to the gas energy of pit shaft from stratum, prevent the generation of pit shaft gas hydrates, reduce simultaneously well head pressure, the spy provides a kind of self-heating natural gas hydrate preventing device.
For achieving the above object, the present invention is by the following technical solutions: self-heating natural gas hydrate preventing device, by electricity generation system, electric heating system and pipeline internal fixation system form, electricity generation system is by overspeed protection device, generator, impeller, dividing plate, axis of rotation, air inlet port forms, be equipped with 4-12 impeller concentric arrangement, impeller is arranged on axis of rotation, 4-12 baffle for separating of peace between impeller, axis of rotation is connected with generator, axis of rotation is connected with overspeed protection device again, for while generating electricity, preventing that wheel speed is too fast, gas enters electricity generation system inside by air inlet port, air inlet port is arranged on nethermost dividing plate below, the gas push wheel rotation, impeller drives generator and produces electric energy, electric energy is inputted electric heating system by wire, gas flows into electric heating system by air guide channel, electric heating system is by gas outlet, heating resistor silk screen and overtemperature protection system form, by the connecting wire that electricity generation system picks out, take over thermel protection device, with the heating resistor silk screen, be connected again, the heating resistor silk screen is filled in electric heating system inside, when heating resistor silk screen excess Temperature, overtemperature protection system automatic disconnection heating resistor silk screen is connected with conductor wire, thereby protection heating resistor silk screen is because overheated and damage, gas enters electric heating system inside via air guide channel, from heating resistor silk screen space, pass electric heating system, gas after being heated is discharged by gas outlet, gas outlet is arranged on heating resistance wire side on the net, the pipeline internal fixation system consists of fishing head, sealing rubber ring, upper slips, lower slips and housing, housing is arranged on electricity generation system and electric heating system outside, housing is by electricity generation system and electric heating system parcel, fishing head is installed on the housing top, installation and removal for device, sealing rubber ring is arranged on the gap of housing and pit shaft oil pipe, and upper slips and lower slips will install fixing and pit shaft oil pipe inside, between electricity generation system and electric heating system, be provided with air guide channel.
The architectural feature of self-heating natural gas hydrate preventing device is, front end is electricity generation system, utilizes and enters its inner gas kinetic energy power generation.Rear end is electric heating system, the gas that utilizes the heating of electricity generation system generating electric energy to pass through.The pipeline internal fixation system is by electricity generation system and electric heating system parcel, and fishing head is put on the housing top, and for the installation and removal of device, sealing rubber ring is for packing housing and pit shaft oil pipe gap, and upper slips and lower slips will install fixing and pit shaft inside.
The course of work of the present invention is: self-heating natural gas hydrate preventing device is electric energy by gas kinetic transformation in pit shaft, and natural gas fluid in recycling Electrothermic wire heating pit shaft, reached the purpose that control pit shaft gas hydrates generate.Device is thrown in and is installed to the pit shaft assigned address by steel wire, is fixed in tube inner wall.Housing and pit shaft oil pipe gap, force the interior gas of pit shaft by air inlet port inflow device inside.The gas push wheel rotation, drive axis of rotation and rotate thereupon, generator work output electric energy.Electric energy is inputted electric heating system by wire, and gas flows into electric heating system by air guide channel, passes electric heating system from heating resistor silk screen space, passes electric heating system from heating resistor silk screen space, and the gas after being heated is discharged by gas outlet.Therebetween, overspeed protection device prevents that wheel rotation is too fast, and overtemperature protection system prevents the overheated damage of heating resistor silk screen.Install once input, can start to heat wellbore gas, the control gas hydrates generate, without human intervention, heating and continuous stable, do not need to input energy, and the Increasing Production and Energy Saving effect is remarkable.Device also can be used simultaneously with chemical inhibitor injection method or downhole choke method, to improve the effect of control gas hydrates.While needing this device of dismounting, adopt wire Launching and Bailing.
The course of work of self-heating natural gas hydrate preventing device is characterised in that, device utilizes pipeline internal fixation system closure casing and pit shaft oil pipe gap, forces in pit shaft gas by air inlet port inflow device inside.The gas push wheel rotation, drive axis of rotation and rotate thereupon, generator work output electric energy.Electric energy is inputted electric heating system by wire, and gas flows into electric heating system by air guide channel, passes electric heating system from heating resistor silk screen space, passes electric heating system from heating resistor silk screen space, and the gas after being heated is discharged by gas outlet.Therebetween, overspeed protection device prevents that wheel rotation is too fast, and overtemperature protection system prevents the overheated damage of heating resistor silk screen.The present invention also can be used to preventing and treating the generation of gas hydrates in well head throttling place and gas transmission line.
Compared with prior art, the present invention has advantages of following beneficial effect: (1) has heating and continuous stable; (2) rely on formation gas work, the Increasing Production and Energy Saving effect is remarkable, greatly improves system effectiveness; (3) do not need ground energy input equipment or reagent injection device; (4) adopt the wire Launching and Bailing operation, convenient operation and management, for gas production.
The accompanying drawing explanation
Fig. 1 is the structural representation of self-heating natural gas hydrate preventing device of the present invention.
In figure: 1, pit shaft oil pipe, 2, fishing head, 3, gas outlet; 4, sealing rubber ring, 5, upper slips, 6, the heating resistor silk screen; 7, overtemperature protection system, 8, air guide channel, 9, overspeed protection device; 10, generator, 11, impeller, 12, lower slips; 13, dividing plate; 14, axis of rotation, 15, housing, 16, air inlet port.
The specific embodiment
Take one be applicable to 3-1/2 " oil pipe, the daily output 20,000 sides the natural gas well self-heating natural gas hydrate preventing device be example, the present invention is described in further detail.The invention will be further described by reference to the accompanying drawings.
Consult Fig. 1.Self-heating natural gas hydrate preventing device, by electricity generation system, electric heating system, with the pipeline internal fixation system, form, electricity generation system is by overspeed protection device 9, generator 10, impeller 11, dividing plate 13, axis of rotation 14, air inlet port 16 forms, 4 impeller 11 concentric arrangement, by dividing plate 13, separated each other, and be connected with generator 10 with axis of rotation 14, axis of rotation 14 is connected with overspeed protection device 9 simultaneously, for while generating electricity, preventing that impeller 11 rotating speeds are too fast, gas enters electricity generation system inside by air inlet port 16, promoting impeller 11 rotates, impeller drives generator 10 and produces electric energy, electric energy is inputted electric heating system by wire, gas flows into electric heating system by air guide channel 8, electric heating system consists of gas outlet 3, heating resistor silk screen 6 and overtemperature protection system 7.The wire picked out by electricity generation system is connected with heating resistor silk screen 6 via overtemperature protection system 7, heating resistor silk screen 6 is filled in electric heating system inside, when heating resistor silk screen 6 excess Temperatures, overtemperature protection system 7 automatic disconnection heating resistor silk screens 6 are connected with conductor wire, thereby protection heating resistor silk screen 6 is because overheated and damage, gas enters electric heating system inside via air guide channel 8, passes electric heating system from heating resistor silk screen 6 spaces, and the gas after being heated is discharged by gas outlet 3; The pipeline internal fixation system consists of fishing head 2, sealing rubber ring 4, upper slips 5, lower slips 12 and housing 15, housing 15 is by electricity generation system and electric heating system parcel, fishing head 2 is put on housing 15 tops, installation and removal for device, sealing rubber ring 4 is for packing housing 15 and pit shaft oil pipe 1 gap, and upper slips 5 will install fixing and pit shaft inside with lower slips 12.
Self-heating natural gas hydrate preventing device is electric energy by gas kinetic transformation in pit shaft, and natural gas fluid in recycling Electrothermic wire heating pit shaft, reached the purpose that control pit shaft gas hydrates generate.Self-heating natural gas hydrate preventing device utilizes pipeline internal fixation system closure casing 15 and pit shaft oil pipe 1 gap, forces the interior gas of pit shaft by air inlet port 16 inflow device inside.Gas push impeller 11 rotates, and drives axis of rotation 14 and rotates thereupon, generator 10 work output electric energy.Electric energy is inputted electric heating system by wire, and gas flows into electric heating system by air guide channel 8, passes electric heating system from heating resistor silk screen 6 spaces, passes electric heating system from heating resistor silk screen 6 spaces, and the gas after being heated is discharged by gas outlet 3.Therebetween, overspeed protection device 9 prevents that wheel rotation is too fast, and overtemperature protection system 7 prevents the overheated damage of heating resistor silk screen 6.
Claims (1)
1. self-heating natural gas hydrate preventing device, by electricity generation system, electric heating system and pipeline internal fixation system form, it is characterized in that: electricity generation system is arranged on the device front end, by overspeed protection device, generator, impeller, dividing plate, axis of rotation, air inlet port forms, be equipped with 4-12 impeller (11) concentric arrangement, impeller (11) is arranged on axis of rotation (14), 4-12 dividing plate (13) is installed between impeller to be separated, axis of rotation (14) is connected with generator (10), axis of rotation (14) is connected with overspeed protection device (9) again, air inlet port (16) is arranged on nethermost dividing plate below, electric heating system is in the device rear end, by gas outlet, heating resistor silk screen and overtemperature protection system, formed, by the connecting wire that above-mentioned electricity generation system picks out, take over thermel protection device (7), connect again heating resistor silk screen (6), heating resistor silk screen (6) is filled in electric heating system inside, and gas outlet (3) are arranged on heating resistor silk screen (6) top, the pipeline internal fixation system is by fishing head, sealing rubber ring, upper slips, lower slips and housing form, housing (15) is arranged on electricity generation system and electric heating system outside, by electricity generation system and electric heating system parcel, fishing head (2) is installed on housing (15) top, sealing rubber ring (4) is arranged on the space between housing (15) and pit shaft oil pipe (1), upper slips (5) is arranged between device top and pit shaft oil pipe (1), lower slips (12) is arranged between device bottom and pit shaft oil pipe (1), upper slips (5) and lower slips (12) are fixed in pit shaft oil pipe (1) inside by device, between electricity generation system and electric heating system, be provided with air guide channel (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103130484A CN102383766B (en) | 2011-10-17 | 2011-10-17 | Self-heating natural gas hydrate preventing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103130484A CN102383766B (en) | 2011-10-17 | 2011-10-17 | Self-heating natural gas hydrate preventing device |
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| CN102383766A CN102383766A (en) | 2012-03-21 |
| CN102383766B true CN102383766B (en) | 2013-11-27 |
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| CN2011103130484A Expired - Fee Related CN102383766B (en) | 2011-10-17 | 2011-10-17 | Self-heating natural gas hydrate preventing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10277094B2 (en) | 2015-09-16 | 2019-04-30 | Saudi Arabian Oil Company | Self-powered pipeline hydrate prevention system |
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| CN104088623B (en) * | 2014-06-19 | 2015-05-27 | 中国石油大学(华东) | Automatic hydrate preventing device for deep water gas well test and preventing method |
| CN104453785A (en) * | 2014-10-21 | 2015-03-25 | 西南石油大学 | Pneumatic heating device preventing hydrates from being generated at throttling part of gas well |
| CN104343416B (en) * | 2014-10-24 | 2016-08-17 | 中国石油大学(华东) | Downhole choke valve, deep water gas well test system and method for testing |
| CN106015940B (en) * | 2016-07-12 | 2018-07-10 | 青岛科技大学 | A kind of intelligence no consumption crude oil assist device and method |
| US11448060B2 (en) | 2020-03-27 | 2022-09-20 | Saudi Arabian Oil Company | Method and system for monitoring and preventing hydrate formations |
| CN112505161B (en) * | 2020-12-01 | 2022-04-29 | 西南石油大学 | Device and method for measuring content and precipitation amount of aromatic hydrocarbon substances in natural gas |
| CN112539042B (en) * | 2020-12-21 | 2023-12-15 | 吉林大学 | Device and method for automatically pre-warning, heating and inhibiting generation of shaft hydrate |
| CN114109314B (en) * | 2021-11-25 | 2022-06-17 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10277094B2 (en) | 2015-09-16 | 2019-04-30 | Saudi Arabian Oil Company | Self-powered pipeline hydrate prevention system |
| US10971972B2 (en) | 2015-09-16 | 2021-04-06 | Saudi Arabian Oil Company | Self-powered pipeline hydrate prevention system |
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| CN102383766A (en) | 2012-03-21 |
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