CN101988382A - Movable device and method for regulating underground flow direction of gasifying agent - Google Patents
Movable device and method for regulating underground flow direction of gasifying agent Download PDFInfo
- Publication number
- CN101988382A CN101988382A CN2010102680213A CN201010268021A CN101988382A CN 101988382 A CN101988382 A CN 101988382A CN 2010102680213 A CN2010102680213 A CN 2010102680213A CN 201010268021 A CN201010268021 A CN 201010268021A CN 101988382 A CN101988382 A CN 101988382A
- Authority
- CN
- China
- Prior art keywords
- movable equipment
- straight pipe
- gasifying agent
- connecting rod
- pipe
- 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.)
- Granted
Links
Images
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a movable device for regulating the underground flow direction of a gasifying agent, which comprises a straight circular pipe 1, a flow guiding window 6, a lifting beam 3, a connecting rod interface 5, an optional outer hoop 2 and a flow guiding window orientation identifier 4, wherein the flow guiding window 6 is connected with the lower end of the straight circular pipe 1, and the gasifying agent flows out of the flow guiding window 6; the lifting beam 3 is arranged at the top of the straight circular pipe 1; the connecting rod interface 5 is arranged on the lifting beam 3 and is used for providing rigid connection between the movable device and an external connecting rod to transfer the torque acting on the connecting rod to the movable device to enable the movable device to rotate by taking the axis of the straight circular pipe 1 as a rotation axis; the optional outer hoop 2 is arranged around the outer side surface of at least one section of the straight circular pipe 1; and the flow guiding window orientation identifier 4 is positioned on the lifting beam 3 or at the top of the straight circular pipe 1, and a definite corresponding relation exists between the flow guiding window orientation identifier 4 and the opening orientation of the flow guiding window 6. The invention also relates to a method for regulating the underground flow direction of the gasifying agent by using the movable device.
Description
Invention field
The present invention relates to apparatus field, relate more specifically to the apparatus field that the subterranean coal air to open is adopted.
Background technology
As everyone knows, in the exploitation of coal-bed gas exploitation, underground coal gasification(UCG) and petroleum gas, drilling well is used in the capital, for the enhanced recovery effect, usually can to subterranean strata, inject fluid media (medium) from a bite drilling well, drive or participate in reaction so that obtain target product, this drilling well is defined as injecting well in this article; From other drilling well with the target product collection to ground, this type of drilling well is defined as producing well in this article.
Fluid is unmanageable injecting the mobile of well or producing well or flowing to, particularly in the underground coal gasification(UCG) process, how to guide the rib diffusion of the such fluid of gasifying agent for example to the underground gasification passage, contact and the reaction of strengthening both are very important.No matter common way is to inject gasifying agent by vertical drilling, inclined drilling or horizontal drilling, and still methods such as mobile feed gasifying agent are selected in replace tubes formula or retrusive gas injection, all can't regulate and control gasifying agent and enter the airflow direction that fires behind the dead zone.
In the underground coal gasification(UCG) process, the underground gasification of particularly in super high seam, implementing, effectively solve/the mobile of an in the vertical direction of giving vent to anger is very important.
For injecting well, in the flow direction of adjusting on a certain degree of depth place horizontal direction after gasifying agent injects, and the decanting point of mobile gasifying agent is all extremely important in vertical direction.Recovery ratio for fear of hole wall slump of naked hole and raising coal seam, when beginning to gasify, inject the lower end of well and producing well sleeve pipe, ignition location and gasification tunnel are usually in the bottom in coal seam, this moment, gasifying agent was preferably delivered to the bottom in coal seam, naturally the bottom of injecting casing also is located in the bottom in coal seam, have with a certain distance from seat earth, carrying out along with combustion gasification, part of coal is burned to be fallen, the coal ash that produces can be deposited in the combustion dead zone, might bury the lower end of injecting well, after the coal of bottom, coal seam has been gasified, need flow through and fire the dead zone and contact with rib again and react from injecting gasifying agent that casing comes out.By improving the position of gas injection point in vertical direction, gasifying agent just need not be annotated and could gasify with the coal seam catalytic combustion with top, combustion dead zone after near coal ash is blown away in the bottom of firing the dead zone.
And for producing well, mobile in vertical direction tube ends position is important.In the process of underground gasification, the coal ash of after-flame can be constantly in the accumulation of the bottom of combustion dead zone, run up to and the casing shoe of producing well will be buried when a certain amount of; Perhaps, along with the increase of combustion dead zone, it compiles phreatic ability and also can increase, if the position of producing well sleeve pipe lower end relatively near the bottom of combustion dead zone, so, the possibility of being flooded by underground water is very big, can cause to give vent to anger smooth or stop up.So the position of the tube ends that moves up is significant for smooth output coal gas.
So, need regulation and control fluid and the contact position in coal seam and the flow direction of fluid for injecting well; For producing well, what need management is that can fluid arrive ground by producing well smoothly.
There have been a lot of patents to propose the method that flow of regulation and control fluid in the down-hole.
Patent of invention US5531270 discloses a kind of method at oil and gas exploitation industry control underground fluid: by in the multi-lateral well under the main shaft valve being set, controlled valve is controlled the fluid that is entered by main shaft and is circulated in multi-lateral well or distribute.
Patent of invention US4754811 discloses a kind of controlled retrusive and has injected the point type coal underground gasifying technology, this invention is to be lowered into gasification tunnel in the subterranean coal by a coiled pipe, coiled pipe carries gasifying agent to the coal seam and light the coal seam and gasify, again by stopping up the coiled pipe end piecemeal, gasifying agent overflows from pre-set the hole with certain distance, control gas injection point after move, also be flowing of downhole fluid.
Patent of invention CN95102245.8 discloses under coal mine or opencut is directly constructed " coal seam gasification stove " with boring or coal road in the coal seam, adopt the method for traction trombone slide that the gas injection point is retreated continuously or periodically with gasification, guarantee the long-term stability that gasification is produced, to realize commercially producing of subterranean coal gasification.
Patent of invention CN96106720.9 has provided and be lowered to a beam tube in same passage, the terminal corresponding different point of pipe, by the switch of transforming terrestrial ascending pipe, regulate and control gasifying agent and be fed to different positions, coal seam and carry out combustion gasification, realize drifting management to downhole fluid.
Above patented method respectively has shortcoming: patent of invention US5531270 to control the main shaft fluid and enter which multi-lateral well by opening or close the valve that is arranged in the multi-lateral well, need be in the down-hole pre-buried pipeline and by-pass valve control, for no-shaft underground gasification, complicated operation not only, automatic control level to valve requires high, and be difficult to guarantee that (1.2MPa) and contain under the complicated underground gasification environment of corrosive gas, valve can normal stable operation at high temperature (200-1200 ℃) high pressure.The just position of gas injection point that patent of invention US4754811 and CN95102245.8 change, complicated operation, and can not regulate and control the direction of air-flow at same gas injection point.Patent of invention CN96106720.9 is by the position of many air injection pipe change gas injection point in the vertical directions, and operation more complicated and economy are bad.
In order to overcome the above problems, the present invention proposes a kind of movable equipment of gasifying agent that is used to regulate at the flow direction of down-hole.
Summary of the invention
First aspect the invention provides a kind of movable equipment of gasifying agent at the flow direction of down-hole that is used to regulate, and it comprises:
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6;
The bale handle 3 that is provided with at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1; With
Connecting rod interface 5 on described bale handle 3, being rigidly connected between the outer link that is used to described movable equipment is provided and not belong to described movable equipment is can being that the axis of rotation rotates with the axis of described straight pipe 1 with acting on that moment of torsion on the described connecting rod passes to described movable equipment and make described movable equipment.
Second aspect the invention provides a kind of movable equipment of gasifying agent at the flow direction of down-hole that is used to regulate, and it comprises:
Be centered around the outer hoop 2 at least one section the lateral surface of described straight pipe 1;
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6;
The bale handle 3 that is provided with at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1; With
Connecting rod interface 5 on described bale handle 3, being rigidly connected between the outer link that is used to described movable equipment is provided and not belong to described movable equipment is can being that the axis of rotation rotates with the axis of described straight pipe 1 with acting on that moment of torsion on the described connecting rod passes to described movable equipment and make described movable equipment.
The third aspect the invention provides a kind of method of gasifying agent at the flow direction of down-hole that be used to regulate, and may further comprise the steps:
A., the injection well is provided, and this injection well passes the rock stratum and extend into the coal seam of below, rock stratum; And described inject into well the well cementation sleeve pipe is provided, this well cementation sleeve pipe is straight pipe, and it is fixed together with rock stratum on every side, it is vertical basically, and its lower end is positioned at the top in coal seam or near the seam roof rock stratum;
B. with the movable equipment dead in line of a first aspect of the present invention put into described well cementation sleeve pipe, and makes described movable equipment stretch out described well cementation sleeve pipe and enter into the coal seam, and described movable equipment is connected with ground device by connecting rod;
Gasifying agent is fed in the subterranean coal by described well cementation sleeve pipe and described movable equipment successively; With
D. lifting and/or rotate described movable equipment as required is to regulate the flow direction of gasifying agent in the down-hole.
Fourth aspect the invention provides a kind of method of gasifying agent at the flow direction of down-hole that be used to regulate, and may further comprise the steps:
A., the injection well is provided, and this injection well passes the rock stratum and extend into the coal seam of below, rock stratum; And described inject into well the well cementation sleeve pipe is provided, described well cementation sleeve pipe is straight pipe, and it is fixed together with rock stratum on every side, and it is vertical basically, and its lower end is positioned at the top or the close seam roof rock stratum in coal seam, and there is inner reduced diameter portion 8 its lower end;
B. with the movable equipment dead in line of a second aspect of the present invention put into described well cementation sleeve pipe, and make described movable equipment stretch out described well cementation sleeve pipe and enter into the coal seam, described movable equipment is connected with ground device by described connecting rod; And the rear surface of described outer hoop 2 is mortise and tenon type with the upper end face of described inner reduced diameter portion 8 and cooperates;
Gasifying agent is fed in the subterranean coal by described well cementation sleeve pipe and described movable equipment successively; With
D. lifting and/or rotate described movable equipment as required is to regulate the flow direction of gasifying agent in the down-hole.
The accompanying drawing summary
Fig. 1 is the outline drawing of movable equipment of the present invention, and wherein a and b are two kinds of exemplary embodiments.
Fig. 2 is the top detailed drawing of movable equipment of the present invention.
The schematic diagram of Fig. 3 when to be movable equipment of the present invention with the well cementation sleeve pipe work in subterranean coal, wherein movable equipment cooperates with the sleeve pipe of cementing the well.
The schematic diagram of Fig. 4 when to be movable equipment of the present invention with the well cementation sleeve pipe work in subterranean coal wherein rises certain height with movable equipment.
These figure only are illustrative, the scope that does not limit the present invention in any way.
Detailed Description Of The Invention
In first aspect, provided by the inventionly comprise following part for regulating gasifying agent at the movable equipment of the flow direction of down-hole:
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6. " connection " described here can be any type of connection, only otherwise the leakage of generating gasification agent gets final product. For example, this diversion window is preferably done as a whole with described straight pipe and is formed, and perhaps, can connect by the mode of nested or bump joint. This diversion window 6 can be taked various ways, as long as it can make gasifying agent therefrom flow out and not affect described movable equipment in the lifting of down-hole. In one embodiment, this diversion window can be elbow, and the one side opening is connected with described straight pipe 1, and the opposite side opening opens wide. Preferred this elbow is 90 degree elbows, but also can use the elbow of other angle, the elbows of 120 degree for example, etc. In another embodiment, described diversion window can be for having the straight tube of side window, the one head is connected with described straight pipe 1, the other end blocks, and offer at least one side window in the side, and the external diameter of this straight tube is not more than the external diameter of described straight pipe 1, and preferably the external diameter with straight pipe 1 is identical, but internal diameter can be with it identical or different.
The bale handle 3 that arranges at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1. Described bale handle can be in-line, inverted V-shaped or inverted U-shaped, and its two ends all directly or indirectly are connected with the top tube wall of described straight pipe 1, and the line between the tie point is the diameter of this straight pipe 1. The effect of this bale handle is for by the connecting rod interface on it described movable equipment being hung in outer link. On described bale handle 3, also randomly has diversion window towards sign 4, this diversion window towards sign 4 and the opening of diversion window 6 towards existing definite corresponding relation, for example, described diversion window towards sign 4 and the opening of described diversion window 6 towards consistent, the opening that is used to indicate diversion window 6 towards. This diversion window can be the identifier of originally drawing with it or carving at bale handle towards sign 4, also can be the identifier that is positioned at straight pipe 1 top. It must be noted that, this diversion window towards sign 4 not necessarily, its just cooperates with the down-hole imaging system opening that plays affirmation diversion window 6 towards effect. In the situation of sign 4, movable equipment of the present invention also can work in this diversion window, but can only be to the opening of diversion window 6 towards carrying out " blind accent ". With,
In second aspect, provided by the inventionly comprise at the movable equipment of the flow direction of down-hole for regulating gasifying agent:
Be centered around the outer hoop 2 at least one section the lateral surface of described straight pipe 1. Described outer hoop 2 can be the pipe of the larger diameter that welds together with described straight pipe 1, and perhaps described outer hoop 2 and described straight pipe 1 are overall shaped into the pipe with local thicker wall. The top of this outer hoop 2 can be concordant with the top of straight pipe 1, perhaps is lower than the top of described straight pipe 1, but preferably its top is concordant with the top of straight pipe 1 or only a little less than the top of straight pipe 1. This outer hoop 2 can have the height of homogeneous, also can the vicissitudinous height of tool, which kind of situation no matter, its maximum height less than and generally speaking much smaller than the height of described straight pipe 1. The rear surface of this outer hoop 2 can be inverted V-shaped, inverted U-shaped or spill, with the inside reduced diameter portion of well cementing casing pipe be arranged to inverted V-shaped, upper end face inverted U-shaped or convex forms mortise and tenon type and cooperates. This mortise and tenon type cooperate can so that the good sealing of formation between the upper end face of the inside reduced diameter portion of the rear surface of outer hoop 2 and well cementing casing pipe leak between the matching surface to prevent gasifying agent. This outer hoop 2 can prevent that also described movable equipment from coming off.
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6. " connection " as herein described can be any type of connection, only otherwise the leakage of generating gasification agent gets final product. For example, this diversion window is preferably done as a whole with described straight pipe and is formed, and perhaps, can connect by mode nested or bump joint or welding. This diversion window 6 can be taked various ways, as long as it can make gasifying agent therefrom flow out and not affect described movable equipment in the lifting of down-hole. In one embodiment, this diversion window can be elbow, and the one side opening is connected with described straight pipe 1, and the opposite side opening opens wide. Preferred this elbow is 90 degree elbows, but also can use the elbow of other angle, the elbows of 120 degree for example, etc. In another embodiment, described diversion window can be straight tube, the one head is connected with described straight pipe 1, the other end blocks, and offer at least one side window in the side, and the external diameter of this straight tube is not more than the external diameter of described straight pipe 1, and preferably the external diameter with straight pipe 1 is identical, but internal diameter can be with it identical or different.
The bale handle 3 that arranges at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1. Described bale handle can be in-line, inverted V-shaped or inverted U-shaped, and its two ends all directly or indirectly are connected with the top tube wall of described straight pipe 1, and the line between the tie point is the diameter of this straight pipe 1. The effect of this bale handle is for by the connecting rod interface on it described movable equipment being hung in outer link. On described bale handle 3, also randomly has diversion window towards sign 4, this diversion window towards sign 4 and the opening of diversion window 6 towards existing definite corresponding relation, for example, described diversion window towards sign 4 and the opening of described diversion window 6 towards consistent, the opening that is used to indicate diversion window 6 towards. This diversion window can be the identifier of originally drawing with it or carving at bale handle towards sign 4, also can be the identifier that is positioned at straight pipe 1 top. It must be noted that, this diversion window towards sign 4 not necessarily, its just cooperates with the down-hole imaging system opening that plays affirmation diversion window 6 towards effect. In the situation of sign 4, movable equipment of the present invention also can work in this diversion window, but can only be to the opening of diversion window 6 towards carrying out " blind accent ". With,
In the third aspect, the invention provides a kind ofly for regulating the method for gasifying agent at the flow direction of down-hole, that is the using method of the movable equipment of a first aspect of the present invention may further comprise the steps:
A., Injection Well is provided, and this Injection Well passes the rock stratum and extend in the coal seam of below, rock stratum; And described inject into well well cementing casing pipe is provided, this well cementing casing pipe is straight pipe, and it is fixed together with rock stratum on every side, it is vertical basically, and its lower end is positioned at the top in coal seam or near the seam roof rock stratum. Wherein this Injection Well and well cementing casing pipe wherein are vertical direction basically. And this well cementing casing pipe mode by cement grout is fixed together with rock stratum on every side securely. The effect of Injection Well is to inject gasifying agent by it in subterranean coal. This Injection Well can reach the degree of depth at the floor strata place of Approaching Coal Seam, and well cementing casing pipe then only reaches the top in coal seam or locates near the seam roof rock stratum. Space, the corresponding coal seam of difference in height between Injection Well and the well cementing casing pipe then is the activity space of the lower end of movable equipment of the present invention, also is the generation part of gasification reaction.
B. with the movable equipment dead in line of a first aspect of the present invention put into described well cementing casing pipe, and make described movable equipment stretch out described well cementing casing pipe and enter into the coal seam, and described movable equipment is connected with ground device by connecting rod. The external diameter of this movable equipment preferably internal diameter with described well cementing casing pipe is identical, so that closely cooperating between the two to be provided, flees to prevent that gasifying agent from leaking.
Gasifying agent is passed in the subterranean coal by described well cementing casing pipe and described movable equipment successively. After movable equipment of the present invention and described well cementing casing pipe are in place, light nethermost coal seam, and gasifying agent is passed in the subterranean coal. This can be by routine equipment for example pump or fan carry out. This gasifying agent finally flows out along predetermined direction from the diversion window of described movable equipment, and contacts with generating gasification with the subterranean coal of predetermined direction and to react. Employed gasifying agent can be oxygen, air, steam, carbon dioxide, flue gas or their mixture. The fuel gas that gasification reaction produces flows to producing well along the preprepared gas passage, and and then the ground of being gathered.
D. as required lifting and/or rotate described movable equipment is to regulate gasifying agent at the flow direction of down-hole. After gasification reaction in subterranean coal carries out a period of time, certain thickness coal is depleted around near and the initial gasification tunnel of the initial decanting point of gasifying agent, just need to control by the length that prolongs or shorten described connecting rod the lifting of described movable equipment this moment, and will act on moment of torsion on the described connecting rod by described connecting rod interface and pass to described movable equipment and make described movable equipment rotation, to regulate gasifying agent at the flow direction of down-hole, so that the coal in gasifying agent and other places comes in contact, to carry out gasification reaction. And observe described diversion window towards the direction of sign 4 by optional down-hole imaging system, with the opening of confirming diversion window 6 towards.
In fourth aspect, the invention provides a kind ofly for regulating the method for gasifying agent at the flow direction of down-hole, that is the using method of the movable equipment of a second aspect of the present invention may further comprise the steps:
A., Injection Well is provided, and this Injection Well passes the rock stratum and extend in the coal seam of below, rock stratum; And described inject into well well cementing casing pipe is provided, described well cementing casing pipe is straight pipe, and it is fixed together with rock stratum on every side, and it is vertical basically, and its lower end is positioned at top or the close seam roof rock stratum in coal seam, and there is inner reduced diameter portion 8 its lower end. Wherein said inner reduced diameter portion 8 can be one section part that internal diameter diminishes of well cementing casing pipe bottom, or says the part of the inside thickening of tube wall, and the internal diameter of this inside reduced diameter portion 8 is more than or equal to the external diameter of described straight pipe 1, and less than the external diameter of described outer hoop 2. Wherein this Injection Well and well cementing casing pipe wherein are vertical direction basically. And this well cementing casing pipe mode by cement grout is fixed together with rock stratum on every side securely. The effect of Injection Well is to inject gasifying agent by it in subterranean coal. This Injection Well can reach the degree of depth at the floor strata place of Approaching Coal Seam, and well cementing casing pipe then only reaches the top in coal seam or locates near the seam roof rock stratum. Space, the corresponding coal seam of difference in height between Injection Well and the well cementing casing pipe then is the activity space of the lower end of movable equipment of the present invention, also is the generation part of gasification reaction.
B. with the movable equipment dead in line of a second aspect of the present invention put into described well cementing casing pipe, and make described movable equipment stretch out described well cementing casing pipe and enter into the coal seam, described movable equipment is connected with ground device by described connecting rod; And the rear surface of described outer hoop 2 is mortise and tenon type with the upper end face of described inner reduced diameter portion 8 and cooperates, and so that closely cooperating between the two to be provided, flees to prevent that gasifying agent from leaking. Described connecting rod can be made a section or telescopic, in order to adjust its length.
Gasifying agent is passed in the subterranean coal by described well cementing casing pipe and described movable equipment successively. After movable equipment of the present invention and described well cementing casing pipe are in place, light nethermost coal seam, and gasifying agent is passed in the subterranean coal. This can be by routine equipment for example pump or fan carry out. This gasifying agent finally flows out along predetermined direction from the diversion window of described movable equipment, and contacts with generating gasification with the subterranean coal of predetermined direction and to react. Employed gasifying agent can be oxygen, air, steam, carbon dioxide, flue gas or their mixture. The fuel gas that gasification reaction produces flows to producing well along the preprepared gas passage, and and then the ground of being gathered.
D. as required lifting and/or rotate described movable equipment is to regulate gasifying agent at the flow direction of down-hole. After gasification reaction in subterranean coal carries out a period of time, certain thickness coal is depleted around near and the initial gasification tunnel of the initial decanting point of gasifying agent, just need to control by the length that prolongs or shorten described connecting rod the lifting of described movable equipment this moment, and will act on moment of torsion on the described connecting rod by described connecting rod interface and pass to described movable equipment and make described movable equipment rotation, to regulate gasifying agent at the flow direction of down-hole, so that the coal in gasifying agent and other places comes in contact, to carry out gasification reaction. And observe described diversion window towards the direction of sign 4 by optional down-hole imaging system, with the opening of confirming diversion window 6 towards.
In the preferred embodiment of a fourth aspect of the present invention, above described inner reduced diameter portion 8, also annular auxiliary sealing member can be set, the rear surface of this auxiliary sealing member can be mortise and tenon type and cooperate with the upper end face of described inner reduced diameter portion 8, and the upper end face of this auxiliary sealing member can be mortise and tenon type with the rear surface of described outer hoop 2 and cooperates.Gasify when just having begun, the rear surface of the upper and lower side of this auxiliary sealing member surface and described outer hoop 2 and the upper end face of described inner reduced diameter portion 8 all are mortise and tenon type and cooperate, and guarantee sealing.After the movable equipment of a second aspect of the present invention was raised certain altitude, this auxiliary sealing member then only cooperated with described inner reduced diameter portion 8 mortise and tenon types and sealing function is provided.
Obviously, movable equipment of the present invention also can be used in the producing well, is used to receive the gasification product from different depth and same degree of depth different directions.When just using in producing well, airflow direction is with just in time opposite when injecting well and use, promptly gasification product through diversion window 6 flow into straight pipe and and then flow in the well cementation sleeve pipe of producing well, flow on the ground at last.
Embodiment
Now illustrate equipment of the present invention and method with the following Examples, embodiment does not plan to limit the scope of the invention only for illustrative purpose.
With reference to Fig. 1, a kind of exemplary of the present invention movable equipment comprises:
With the diversion window 6 of the lower end global formation of this straight pipe 1, it is one 90 degree elbow;
Around the outer hoop 2 of the lateral surface of described straight pipe 1, it is concordant with the top end surface of described straight pipe 1 that it has the height of homogeneous and its top end surface, and itself and described straight pipe 1 global formation;
Bale handle 3, it becomes in-line and constitutes the diameter of the top end surface of described straight pipe 1;
Diversion window is towards sign 4, and it is the arrow that is engraved on the top end surface of described straight pipe 1.
Fig. 2 shows the top details of the described movable equipment of Fig. 1, and each Reference numeral implication is the same.
Generalized section when Fig. 3 and Fig. 4 show movable equipment of the present invention and the sleeve pipe of cementing the well is worked in subterranean coal.Wherein, 7 tube wall sections for the well cementation sleeve pipe, this well cementation sleeve pipe is inserted into the degree of depth in close coal seam in the roof, and 8 is the section of described inner reduced diameter portion.Described movable equipment then is deep in the coal seam degree of depth near seat earth, and wherein 10 is the tube wall section of described straight pipe.9 is the section of described outer hoop, and 6 is diversion window, and it is for offering the straight tube of side window on the tube wall, and its opening is towards the position of gasification tunnel.Gasifying agent flows into the gasification tunnel by predetermined direction from diversion window 6 at last successively by described well cementation sleeve pipe and described movable equipment.Among Fig. 3, described movable equipment and described well cementation sleeve pipe are combined together by outer hoop and inner reduced diameter portion.After the coal of bottom, coal seam is progressively fallen by gasification, in the coal seam, produced cavity, the lime-ash that the gasification back is produced is deposited in cavity bottom, then mention certain altitude with described movable equipment this moment, as shown in Figure 4 so that on the degree of depth closely the coal of face progressively gasified, and guarantee that diversion window is not covered by lime-ash all the time, and the opening that can adjust diversion window as required towards so that also can be gasified in the more multidirectional coal seam under the same degree of depth.
Advantage of the present invention is as follows:
Use movable equipment of the present invention, obviously can apply to the flow behavior of downhole fluid more man's activity and control, so that the flow direction of the gasifying agent in the Injection Well is adjustable, thereby so that in the coal seam coal of different depth and same degree of depth different directions can both contact and be vaporized with gasifying agent.
Claims (16)
1. one kind is used to regulate the movable equipment of gasifying agent at the flow direction of down-hole, and it comprises:
Straight pipe 1;
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6;
The bale handle 3 that is provided with at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1; With
Connecting rod interface 5 on described bale handle 3, being rigidly connected between its outer link that is used to described movable equipment is provided and not belong to described movable equipment is can being that the axis of rotation rotates with the axis of described straight pipe 1 with acting on that moment of torsion on the described connecting rod passes to described movable equipment and make described movable equipment.
2. one kind is used to regulate the movable equipment of gasifying agent at the flow direction of down-hole, and it comprises:
Straight pipe 1;
Be centered around the outer hoop 2 at least one section the lateral surface of described straight pipe 1;
With the diversion window 6 that the lower end of described straight pipe 1 is connected, gasifying agent flows out from this diversion window 6;
The bale handle 3 that is provided with at the top of described straight pipe 1; This bale handle 3 is overlapping perpendicular to the diameter of the projection on the plane of the axis of described straight pipe 1 with described straight pipe 1; With
Connecting rod interface 5 on described bale handle 3, being rigidly connected between its outer link that is used to described movable equipment is provided and not belong to described movable equipment is can being that the axis of rotation rotates with the axis of described straight pipe 1 with acting on that moment of torsion on the described connecting rod passes to described movable equipment and make described movable equipment.
2. claim 1 or 2 movable equipment, wherein said diversion window 6 is an elbow, and the one side opening is connected with described straight pipe 1, and the opposite side opening opens wide, and the size of this elbow does not influence the lifting of described movable equipment in the down-hole.
3. claim 1 or 2 movable equipment, wherein said elbow is 90 degree elbows.
4. claim 1 or 2 movable equipment, wherein said diversion window is the straight tube with side window, and the one head is connected with described straight pipe 1, and the other end blocks, and offer at least one side window on the side, and the external diameter of this straight tube is not more than the external diameter of described straight pipe 1.
5. claim 1 or 2 movable equipment, wherein said bale handle is in-line, inverted V-shaped or inverted U-shaped.
6. the connected mode between claim 1 or 2 the movable equipment, wherein said connecting rod interface and described connecting rod is for the screw thread formula is connected, the pin locking-type connects or bite type connects.
7. claim 1 or 2 movable equipment wherein have diversion window towards sign 4 on the top of described bale handle 3 or described straight pipe 1, this diversion window towards the opening of sign 4 and diversion window 6 towards existing definite corresponding relation.
8. the movable equipment of claim 7, wherein said diversion window towards the opening of sign 4 and described diversion window 6 towards consistent.
9. the movable equipment of claim 2, wherein said outer hoop 2 is the pipe of the larger diameter that welds together with described straight pipe 1, perhaps described outer hoop 2 and described straight pipe 1 are overall shaped into the pipe with local thicker wall.
10. the movable equipment of claim 2, the rear surface of wherein said outer hoop 2 is inverted V-shaped, inverted U-shaped or spill, with the inside reduced diameter portion of well cementation sleeve pipe be arranged to inverted V-shaped, upper end face inverted U-shaped or convex forms mortise and tenon type and cooperates.
11. one kind is used to regulate the method for gasifying agent at the flow direction of down-hole, may further comprise the steps:
A., the injection well is provided, and this injection well passes the rock stratum and extend into the coal seam of below, rock stratum; And described inject into well the well cementation sleeve pipe is provided, this well cementation sleeve pipe is straight pipe, and it is fixed together with rock stratum on every side, it is vertical basically, and its lower end is positioned at the top in coal seam or near the seam roof rock stratum;
B. with among the claim 1-10 each movable equipment dead in line put into described well cementation sleeve pipe, and makes described movable equipment stretch out described well cementation sleeve pipe and enter into the coal seam, and described movable equipment is connected with ground device by connecting rod;
Gasifying agent is fed in the subterranean coal by described well cementation sleeve pipe and described movable equipment successively; With
D. lifting and/or rotate described movable equipment as required is to regulate the flow direction of gasifying agent in the down-hole.
12. one kind is used to regulate the method for gasifying agent at the flow direction of down-hole, may further comprise the steps:
A., the injection well is provided, and this injection well passes the rock stratum and extend into the coal seam of below, rock stratum; And described inject into well the well cementation sleeve pipe is provided, described well cementation sleeve pipe is straight pipe, and it is fixed together with rock stratum on every side, and it is vertical basically, and its lower end is positioned at the top or the close seam roof rock stratum in coal seam, and there is inner reduced diameter portion 8 its lower end;
B. with among the claim 2-10 each movable equipment dead in line put into described well cementation sleeve pipe, and make described movable equipment stretch out described well cementation sleeve pipe and enter into the coal seam, described movable equipment is connected with ground device by described connecting rod; And the rear surface of described outer hoop 2 is mortise and tenon type with the upper end face of described inner reduced diameter portion 8 and cooperates;
Gasifying agent is fed in the subterranean coal by described well cementation sleeve pipe and described movable equipment successively; With
D. lifting and/or rotate described movable equipment as required is to regulate the flow direction of gasifying agent in the down-hole.
13. the method for claim 11 or 12, wherein control the lifting of described movable equipment, and will act on moment of torsion on the described connecting rod by described connecting rod interface and pass to described movable equipment and make described movable equipment rotation by the length that prolongs or shorten described connecting rod.
14. the method for claim 11 or 12, wherein by described diversion window towards the sign 4 determine described diversion window 6 specifically towards.
15. the method for claim 12, annular auxiliary sealing member wherein is set above described inner reduced diameter portion 8, the rear surface of this auxiliary sealing member can be mortise and tenon type and cooperate with the upper end face of described inner reduced diameter portion 8, and the upper end face of this auxiliary sealing member can be mortise and tenon type with the rear surface of described outer hoop 2 and cooperates.
16. the method for claim 11 or 12 is wherein observed the direction of described diversion window towards sign 4 by the down-hole imaging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010268021.3A CN101988382B (en) | 2010-08-31 | 2010-08-31 | Movable device and method for regulating underground flow direction of gasifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010268021.3A CN101988382B (en) | 2010-08-31 | 2010-08-31 | Movable device and method for regulating underground flow direction of gasifying agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988382A true CN101988382A (en) | 2011-03-23 |
| CN101988382B CN101988382B (en) | 2014-07-16 |
Family
ID=43745143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010268021.3A Active CN101988382B (en) | 2010-08-31 | 2010-08-31 | Movable device and method for regulating underground flow direction of gasifying agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101988382B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056352A (en) * | 2019-05-14 | 2019-07-26 | 贵州大学 | A kind of coal and rock conduction fracturing device based on liquid carbon dioxide |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB611418A (en) * | 1944-07-13 | 1948-10-29 | Pierre Demart | Improved process and plant for underground gasification |
| US4067390A (en) * | 1976-07-06 | 1978-01-10 | Technology Application Services Corporation | Apparatus and method for the recovery of fuel products from subterranean deposits of carbonaceous matter using a plasma arc |
| US4334579A (en) * | 1980-08-29 | 1982-06-15 | The United States Of America As Represented By The United States Department Of Energy | Method for gasification of deep, thin coal seams |
| US4479540A (en) * | 1981-06-05 | 1984-10-30 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Gasification of coal |
| CN86209728U (en) * | 1986-12-04 | 1987-11-11 | 尚小卫 | Drain with a inside dirt filter |
| CN2038543U (en) * | 1988-07-13 | 1989-05-31 | 田振和 | Protective device for deep well |
| SU1647125A1 (en) * | 1989-04-24 | 1991-05-07 | Ленинградский горный институт им.Г.В.Плеханова | Method of underground treatment of coal seam |
| SU1716110A1 (en) * | 1989-12-20 | 1992-02-28 | Институт горного дела им.А.А.Скочинского | Method of underground gasification of combustible minerals |
| CN2296926Y (en) * | 1997-08-05 | 1998-11-11 | 王文臣 | Large-diameter drilling tool for drilling and coring of hard rock |
| CN1818334A (en) * | 2005-02-07 | 2006-08-16 | 杨朝杰 | Synchronizing flow seal-verification testing method and tester thereof |
| WO2006104425A2 (en) * | 2005-03-30 | 2006-10-05 | Otkritoye Aktsionernoye Obshchestvo 'promgaz' | Method for controlling the composition of an underground coal gasification gas |
| CN2844436Y (en) * | 2005-12-12 | 2006-12-06 | 中国矿业大学(北京) | Electric-melting and panel turnover gas-injecting point controller |
| CN201443343U (en) * | 2009-06-08 | 2010-04-28 | 辽河石油勘探局 | Setting device for geothermal well casings |
-
2010
- 2010-08-31 CN CN201010268021.3A patent/CN101988382B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB611418A (en) * | 1944-07-13 | 1948-10-29 | Pierre Demart | Improved process and plant for underground gasification |
| US4067390A (en) * | 1976-07-06 | 1978-01-10 | Technology Application Services Corporation | Apparatus and method for the recovery of fuel products from subterranean deposits of carbonaceous matter using a plasma arc |
| US4334579A (en) * | 1980-08-29 | 1982-06-15 | The United States Of America As Represented By The United States Department Of Energy | Method for gasification of deep, thin coal seams |
| US4479540A (en) * | 1981-06-05 | 1984-10-30 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Gasification of coal |
| CN86209728U (en) * | 1986-12-04 | 1987-11-11 | 尚小卫 | Drain with a inside dirt filter |
| CN2038543U (en) * | 1988-07-13 | 1989-05-31 | 田振和 | Protective device for deep well |
| SU1647125A1 (en) * | 1989-04-24 | 1991-05-07 | Ленинградский горный институт им.Г.В.Плеханова | Method of underground treatment of coal seam |
| SU1716110A1 (en) * | 1989-12-20 | 1992-02-28 | Институт горного дела им.А.А.Скочинского | Method of underground gasification of combustible minerals |
| CN2296926Y (en) * | 1997-08-05 | 1998-11-11 | 王文臣 | Large-diameter drilling tool for drilling and coring of hard rock |
| CN1818334A (en) * | 2005-02-07 | 2006-08-16 | 杨朝杰 | Synchronizing flow seal-verification testing method and tester thereof |
| WO2006104425A2 (en) * | 2005-03-30 | 2006-10-05 | Otkritoye Aktsionernoye Obshchestvo 'promgaz' | Method for controlling the composition of an underground coal gasification gas |
| CN2844436Y (en) * | 2005-12-12 | 2006-12-06 | 中国矿业大学(北京) | Electric-melting and panel turnover gas-injecting point controller |
| CN201443343U (en) * | 2009-06-08 | 2010-04-28 | 辽河石油勘探局 | Setting device for geothermal well casings |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056352A (en) * | 2019-05-14 | 2019-07-26 | 贵州大学 | A kind of coal and rock conduction fracturing device based on liquid carbon dioxide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101988382B (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Perkins | Underground coal gasification–Part I: Field demonstrations and process performance | |
| CN102477857B (en) | Passage formation method for underground coal gasification | |
| AU2014303165B2 (en) | Gas injection apparatus with controllable gas injection point, gas injection process, and gasification method | |
| US20080078552A1 (en) | Method of heating hydrocarbons | |
| US4185692A (en) | Underground linkage of wells for production of coal in situ | |
| CN102230372A (en) | Thermal recovery technology of multielement thermal fluid of thickened oil well | |
| WO2015032197A1 (en) | Underground coal gasification furnace and underground coal gasification method | |
| MX2008010764A (en) | Method for producing viscous hydrocarbon using steam and carbon dioxide. | |
| CN101427005A (en) | Process for extracting liquid hydrocarbon from underground reservoir | |
| CN104563991B (en) | A kind of gasification process of coal underground gasifying furnace | |
| CN104453831A (en) | Underground gasification device and system and method for gasifying coal | |
| CN101427006A (en) | Process for extracting liquid hydrocarbon from underground reservoir | |
| CN107939370A (en) | A kind of strip-type underground coal gasification system and production method | |
| CN110159245A (en) | Distribution note exhaust passage narrow strips coal underground gasifying furnace production system and method | |
| CN106996285A (en) | Underground mixed phase heated fluid generator and its application method | |
| WO2022262261A1 (en) | Coalbed methane and coal gas mine | |
| CN1061733C (en) | Coal-bed gasifying method of gas-injection point backing while changing tube | |
| CN208564527U (en) | A kind of in-situ coal gasification furnace of multi-faceted U-shaped butt shaft building | |
| CN207568580U (en) | Underground coal gasification furnace | |
| CN104131780A (en) | Method for preventing well water leakage and well structure | |
| CN105201480A (en) | Surface well-underground long borehole coal bed fracturing method | |
| CN104594873A (en) | Coal underground gasification furnace and method | |
| CN101988382B (en) | Movable device and method for regulating underground flow direction of gasifying agent | |
| GB2501074A (en) | Underground gasification with conduits disposed in a wellbore | |
| WO2021179684A1 (en) | Underground gasifier pre-control structure, gasifier, and gasification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |