CN109723422B - High-energy gas fracturing production-increasing and injection-increasing device for oil well - Google Patents
High-energy gas fracturing production-increasing and injection-increasing device for oil well Download PDFInfo
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- CN109723422B CN109723422B CN201910091913.1A CN201910091913A CN109723422B CN 109723422 B CN109723422 B CN 109723422B CN 201910091913 A CN201910091913 A CN 201910091913A CN 109723422 B CN109723422 B CN 109723422B
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Abstract
The invention discloses a high-energy gas fracturing production-increasing and injection-increasing device for an oil well, which comprises: the device comprises a main rod, a perforation, a liquid spraying hole, an exploder, a liquid flowing pipe, a cylindrical barrel, a first compression spring, a second compression spring, a sliding rod, a fixed rod, a first anti-corrosion sleeve, a second anti-corrosion sleeve, an outer sleeve, a third compression spring, a partition plate, an explosion hole, a sieve mesh, a ground grabbing ring, a rigid sleeve and a V-shaped elastic buckle. The invention can not only complete perforation and acid fracturing operation at the same time, but also effectively prevent the perforating gun from rebounding due to the rising of explosion impact force in the perforation process, avoid the occurrence of accidents and ensure the safety and efficiency of oil well operation.
Description
Technical Field
The invention relates to the field of oil well equipment. More particularly, the invention relates to a high-energy gas fracturing production-increasing and injection-increasing device for an oil well.
Background
The oil well can not carry out oil extraction operation immediately after perforation operation or can not obtain satisfactory yield, so the operation such as acidizing and fracturing is carried out, but the prior perforation tool and the prior acidizing and fracturing tool are separate and complicated in operation, frequent operation is carried out in the oil well with unfixed perforation cracks, the cracks are easy to close, only the perforation is carried out at the same time, then the perforation is acidified, the perforation is solidified, and the oil well can keep long-term high yield during acidification; however, the existing perforating gun only can be used for perforating with single function and has no other function.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide an oil well high-energy gas fracturing production-increasing injection device which can not only simultaneously complete perforation and acid fracturing operation, but also effectively prevent a perforating gun from rebounding due to the rising of explosive impact force in the perforation process, thereby avoiding accidents.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a high energy gas fracturing stimulation injector for an oil well, comprising:
the main rod is a hollow cylindrical barrel and is vertically arranged, the outer wall of the lower part of the main rod is provided with spirally wound perforating holes and liquid spraying holes, the perforating holes and the liquid spraying holes are arranged at intervals in the vertical direction, the upper end of each liquid spraying hole corresponds to one perforating hole, the bottom end of the main rod is fixedly provided with a horizontal partition plate, and an exploder is fixedly arranged below the partition plate;
the liquid feeding pipe is sleeved inside the main rod, the upper part of the liquid feeding pipe is vertically arranged and is coaxial with the main rod, the lower part of the liquid feeding pipe is spirally wound in the main rod, a first through hole is formed in the liquid feeding pipe corresponding to each liquid spraying hole, and the first through holes are communicated with the liquid spraying holes;
the cylinder barrel is vertically arranged, the diameter of the cylinder barrel is larger than that of the liquid walking pipe, the diameters of the upper end and the lower end of the cylinder barrel are reduced, the cylinder barrel is connected with the upper vertical part and the lower spiral part of the liquid walking pipe, a plurality of second through holes are formed in the cylinder wall of the cylinder barrel and the rod wall of the main rod in a penetrating mode along the same circumferential direction, a horizontal sliding rod penetrates through each second through hole, one end, facing the center of the cylinder barrel, of each sliding rod is provided with a fixed block, the other end of each sliding rod penetrates through the second through hole, the end portions of the sliding rods are connected with a pulley, the fixed blocks are abutted with each other, a first compression spring is sleeved on each sliding rod, two ends of each first compression spring are abutted with the fixed blocks and the inner wall of the cylinder barrel respectively, and the first compression spring, the sliding rods and the;
the outer sleeve is coaxially sleeved on the lower part of the main rod, matched threads are arranged at the lower end of the outer sleeve and the lower end of the main rod, a third compression spring is arranged at the bottom end of the outer sleeve, one end of the third compression spring is abutted to the bottom of the outer sleeve, the other end of the third compression spring is abutted to the partition plate, a blasting hole and a sieve mesh are arranged on the pipe wall of the outer sleeve, an inclined sliding plate is arranged at the upper end of the outer sleeve along the circumferential direction, and the pulley is abutted to the sliding plate; when the third compression spring is in a natural state, the pipe wall of the outer sleeve seals the liquid spraying hole, and the detonating hole is opposite to the perforation; when the first compression spring is compressed, the slide rod slides outwards along the slide plate, the third compression spring is compressed, and the outer sleeve spirally descends to enable the sieve pores to be opposite to the liquid spraying holes;
the lifting device comprises a ground grabbing ring at the bottom, the ground grabbing ring is of a horn-shaped structure with a small upper opening and a large lower opening, the edge of the large lower opening is of a sawtooth shape, a plurality of rigid sleeves with diameters reduced in sequence are coaxially arranged on the upper portion of the ground grabbing ring, a V-shaped elastic buckle is arranged on the upper portion of each rigid sleeve, a corresponding clamping hole is formed in the position, corresponding to the V-shaped elastic buckle, of the lower portion of each rigid sleeve, the rigid sleeves are connected in a tail closing mode, and the upper portion of the rigid sleeve as the upper layer is connected with the bottom of the initiator.
Preferably, a circle of sealing ring is coaxially sleeved on the outer wall of the main rod at the upper part of the cylindrical barrel, a pair of pressure relief holes are formed in the outer wall of the main rod below the sealing ring, an expanding section is coaxially arranged in the main rod at the upper part of the sealing ring, a plurality of third through holes are circumferentially formed in the wall of the expanding section, a horizontal fixed needle rod is arranged in each third through hole in a penetrating manner, one end of each fixed needle rod penetrates out of the outer wall of the main rod, the other end of each fixed needle rod is located in the main rod, a limiting block is arranged at one end of each fixed needle rod located in the main rod, a second compression spring is sleeved on each fixed needle rod, and two ends of each second spring; when the second compression spring is in an extension state, the limiting block is abutted against the outer wall of the liquid walking pipe, when the second compression spring is in a compression state, one end, facing the inner wall of the main rod, of the fixed needle rod penetrates out of the main rod and pricks into the inner wall of a drilling well, the diameter expanding section is fixedly connected with the second anti-corrosion sleeve to form a cavity, and the second compression spring, the limiting block and the fixed needle rod are all sleeved with the cavity.
Preferably, a plurality of baffle plates are arranged above the fixing component and fixedly connected with the inner wall of the main rod.
Preferably, the number of the fixed needle rods is 6, and the fixed needle rods are symmetrically arranged.
Preferably, the outer wall of the detonating hole is provided with a high-temperature combustion improver.
Preferably, the lifting height of the lifting device is equal to the vertical distance between the liquid spraying hole and the center of the perforation.
Preferably, a coaxial guide pipe is arranged on one side of the second through hole facing to the cylinder center of the cylindrical barrel, and the diameter of the guide pipe is slightly larger than that of the sliding rod.
Preferably, a coaxial guide rod pipe is arranged on one side of the third through hole facing the liquid feeding pipe, and the diameter of the guide rod pipe is slightly larger than that of the fixed needle rod.
The invention at least comprises the following beneficial effects:
1. the perforation device is combined with the liquid conveying pipe, so that the construction steps of oil well perforation fracturing are simplified, the problem of replacing the device for many times is avoided, and the safety degree of operation is ensured; the ejected hole sites can be acidized in time after perforation, the perforation is solidified and fractured under high pressure, the stability of the oil well cracks is ensured, the cracks ejected by the perforating bullets cannot be closed easily, multiple times of perforation are avoided, the effectiveness and the safety of operation in the oil well are ensured, and the oil yield of the oil well can be kept in a stable state;
2. the pressure of high-pressure gas generated by the perforating bullet is ingeniously utilized to push the fixed needle rod to prick into the wall of the oil well and fix the oil well high-energy gas fracturing production-increasing injection device, so that the problem of outward channeling of the device in the perforating process is effectively prevented, accidents which easily occur in the perforating process are eliminated, and the safety of constructors is guaranteed.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a high-energy gas fracturing stimulation injector for an oil well according to one technical scheme of the invention;
FIG. 2 is a partial structural schematic diagram of a high-energy gas fracturing stimulation injector of the oil well according to one technical scheme of the invention;
FIG. 3 is a partial structural schematic diagram of a high-energy gas fracturing stimulation injector of the oil well according to one technical scheme of the invention;
FIG. 4 is a partial structural cross-sectional view of the oil well high-energy gas fracturing stimulation injector according to one embodiment of the invention;
FIG. 5 is a partial structural sectional view of the oil well high-energy gas fracturing stimulation injector according to one technical scheme of the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-5, the present invention provides a high energy gas fracturing stimulation injector for oil wells, comprising:
the explosive-free drilling device comprises a main rod 1, a plurality of explosive-free blasting holes 6 and a plurality of horizontal partition plates, wherein the main rod 1 is a hollow cylindrical barrel and is vertically arranged, the outer wall of the lower part of the main rod 1 is provided with a perforation hole 4 and a liquid spraying hole 6 which are spirally wound along the circumferential direction of the outer wall of the main rod 1, the perforation hole 4 and the liquid spraying hole 6 are arranged in a staggered mode in the vertical direction at intervals, the circle centers of the liquid spraying hole 6 and the perforation hole 4 are located on the radial line of the same main rod 1, the bottom end of the main rod 1 is fixedly provided with a horizontal partition plate;
the liquid walking pipe 2 is sleeved inside the main rod 1, the upper portion of the liquid walking pipe 2 is vertically arranged and coaxial with the main rod 1, the lower portion of the liquid walking pipe 2 is spirally wound inside the main rod 1, a first through hole is formed in the position, corresponding to each liquid spraying hole 6, of the liquid walking pipe 2 and is communicated with the liquid spraying holes 6, and a high-pressure liquid pump is connected to the upper portion of the liquid walking pipe 2 to apply pressure to acid liquid in the liquid walking pipe 2;
the cylinder is vertically arranged, the diameter of the cylinder is larger than that of the liquid walking pipe 2, the diameters of the upper end and the lower end of the cylinder are reduced, the upper end and the lower end of the cylinder are respectively connected with the upper vertical part and the lower spiral part of the liquid walking pipe 2, a plurality of second through holes are arranged on the wall of the cylinder and the wall of the main rod 1 in a penetrating way along the same circumferential direction, a horizontal sliding rod 19 penetrates through each second through hole, one end, facing the center of the cylinder, of the sliding rod 19 is provided with a fixed block, the other end penetrates out of the second through hole and is connected with a pulley 20, the fixed blocks are mutually abutted, the sliding rod 19 is sleeved with a first compression spring 18, the two ends of the first compression spring 18 are respectively abutted against the fixed block and the inner wall of the cylinder, the first compression spring 18, the sliding rod 19 and the fixed block are all wrapped in a cavity formed by a first anti-corrosion sleeve 21 and the cylinder, so as to prevent the first compression spring 18, the slide bar 19 and the fixed block from being corroded by the acid liquid in the liquid running pipe 2, and the first anti-corrosion sleeve 21 is made of an acid-resistant material, specifically, can be made of a PVC material.
An outer sleeve 3, the lower part of mobile jib 1 is established to its coaxial cover, be equipped with assorted screw thread 8 on the lower part inner wall of outer sleeve 3 with on the lower part outer wall of mobile jib 1 to make outer sleeve 3 can slide from top to bottom around mobile jib 1, the bottom of outer sleeve 3 is equipped with third compression spring 9, third compression spring 9 with the coaxial cover of mobile jib 1 is established, third compression spring 9 one end with the bottom butt of outer sleeve 3, the other end with the baffle butt, in order to with outer sleeve 3 jack-up, be equipped with explosion hole 5 and sieve mesh 7 on the pipe wall of outer sleeve 3, the upper end of outer sleeve 3 is equipped with the slide of slope along circumference, the slide is big-end-up's loudspeaker column structure, the slide with the coaxial setting of mobile jib 1, the osculum diameter of slide lower part with outer sleeve 3 diameter is the same, and the slide lower part with the upper end rigid coupling of outer, the pulley 20 abuts against the sliding plate; when the third compression spring 9 is in a natural state, the outer sleeve 3 is jacked up, the pipe wall of the outer sleeve 3 seals the liquid spraying hole 6, and the detonating hole 5 is opposite to the perforation 4; when the first compression spring 18 is compressed by the high-pressure liquid entering the liquid running pipe 2, the sliding rod 19 slides outwards along the sliding plate to force the third compression spring 9 to compress, and the outer sleeve 3 spirally descends to enable the sieve holes 7 to be opposite to the liquid spraying holes 6;
the lifting device comprises a ground grabbing ring 12 at the bottom, wherein the ground grabbing ring 12 is of a horn-shaped structure with a small upper opening and a large lower opening, the edge of the large lower opening is of a sawtooth shape, the upper part of the ground grabbing ring 12 is coaxially provided with a plurality of rigid sleeves 11 with diameters sequentially reduced and then increased, the upper part of each rigid sleeve 11 is fixedly provided with a V-shaped elastic buckle, the lower part of each rigid sleeve 11 corresponding to the V-shaped elastic buckle is provided with a corresponding clamping hole, so that the rigid sleeves 11 are in tail connection, and the upper part of the rigid sleeve 11 at the uppermost layer is fixedly connected with the bottom of the initiator 10;
the liquid spraying device comprises a hollow main rod 1 which is vertically arranged, a liquid flowing pipe 2 is sleeved in the main rod 1, an outer sleeve 3 is sleeved outside the main rod 1, the outer wall of the lower part of the main rod 1 is provided with a perforation hole 4 and a liquid spraying hole 6, the perforation hole 4 and the liquid spraying hole 6 are alternately arranged at intervals in the vertical direction, the circle centers of the perforation hole 4 and the liquid spraying hole 6 are on the same vertical bus, and the perforation hole 4 is positioned right above the liquid spraying hole 6; the bottom of the main rod 1 is provided with a horizontal clapboard;
the liquid walking pipe 2 is divided into three parts, a vertical part at the upper part of the liquid walking pipe 2, a spiral part at the lower part of the liquid walking pipe 2 and a cylindrical barrel connected with the vertical part at the upper part of the liquid walking pipe 2 and the spiral part at the lower part of the liquid walking pipe 2, the upper part of the cylindrical barrel is connected with the bottom end of the vertical part at the upper part of the liquid walking pipe 2, the lower part of the cylindrical barrel is connected with the top end of the spiral part at the lower part of the liquid walking pipe 2, the cylindrical barrel and the vertical part at the upper part of the liquid walking pipe 2 are coaxial, the diameter of the cylindrical barrel is larger than the diameter of the vertical; a plurality of first through holes are formed in the pipe wall of the spiral part at the lower part of the liquid walking pipe 2, the number of the first through holes is equal to that of the liquid spraying holes, and each first through hole is communicated with the corresponding liquid spraying hole 6 on the main rod 1, so that liquid in the liquid walking pipe 2 is sprayed out through the first through holes and the liquid spraying holes 6;
wherein, a circle of second through holes are arranged on the wall of the cylinder along the same circumference, the number of the second through holes is 6, and the second through holes are evenly arranged at intervals, a horizontal slide bar 19 is arranged in each second through hole, a fixed block is arranged at one end of the slide bar 19 facing the center of the cylinder, a pulley 20 is arranged at one end of the slide bar 19 facing the oil well wall, the diameter of the slide bar 19 is slightly smaller than that of the second through hole, so that the slide bar 19 can slide in the second through hole, a first compression spring 18 is coaxially sleeved on each slide bar 19, one end of each end of the first compression spring 18 is abutted against the inner wall of the cylinder, the other end of each first compression spring is abutted against the corresponding fixed block, a vertical cylindrical first anti-corrosion sleeve 21 is coaxially sleeved in the cylinder, the upper end of the first anti-corrosion sleeve 21 is fixedly connected with the cylinder wall at the upper part of the second through hole, the lower end of, the first anti-corrosion sleeve 21 and the inner wall of the cylinder form an annular cavity, and all the first compression springs 18, all the slide rods 19 and all the fixed blocks are wrapped in the cavity to prevent the parts from being corroded by acid liquor in the liquid feeding pipe 2;
the diameter of the outer sleeve 3 is slightly larger than that of the main rod 1, the upper end of the outer sleeve 3 is a horn-shaped sliding plate, the pulley 20 is abutted to the sliding plate, the pipe wall of the outer sleeve 3 is provided with a plurality of sieve pores 7 and a plurality of explosion holes 5, the inner wall of the lower part of the outer sleeve 3 and the outer wall of the lower part of the main rod 1 are respectively provided with matched internal threads and external threads 8, the main rod 1 is coaxially sleeved with a third compression spring 9, two ends of the third compression spring 9 are respectively abutted to the bottom end of the outer sleeve 3 and a partition plate to support the outer sleeve 3, so that the outer sleeve 3 can slide up and down along the threads, when the third compression spring 9 is in a natural state, the cylinder wall of the outer sleeve 3 seals the; when the third compression spring 9 is in a compressed state, the sieve pore 7 is aligned with the liquid spraying hole 6, and the other detonating hole 5 is aligned with the perforation hole 4;
the lower part of the partition board is provided with an initiator 10 which is in control connection with perforating bullets in each perforating hole, the lower end of the initiator 10 is connected with a plurality of rigid sleeves 11 which are sleeved together, the diameters of the rigid sleeves 11 are gradually reduced and then gradually increased, the inner wall of the upper part of each sleeve is provided with a V-shaped bullet buckle, the lower part of a ferrule right below the V-shaped bullet buckle in the same vertical direction is provided with a clamping hole, the rigid sleeves 11 are stretched to ensure that the tails of the rigid sleeves 11 are connected with each other through the V-shaped bullet buckles and the buckles, the diameters of the rigid sleeves 11 at the uppermost end and the lowermost end are maximum, and the expansion of the oil well high-energy gas fracturing production-increasing and injection device in; the bottom of the rigid sleeve 11 at the lowest end is coaxially provided with a horizontal ground grasping ring 12, the ground grasping ring 12 is in a horn shape with a small upper part and a big lower part, the edge of a large opening at the lower end is in a sawtooth shape, and the diameter of a small opening at the upper part is equal to that of the rigid sleeve 11 at the lowest end;
the specific using method is that firstly the rigid sleeves 11 are completely overlapped, the device is put into an oil well, the ground grasping ring 12 is used for fixing the device, the initiator 10 is in control connection with bullets in the perforation holes 4, a large amount of high-pressure gas is generated after the bullets are shot out and exploded, the device is pushed to the oil well, the ground grasping ring 12 grasps the ground, the rigid sleeves 11 are stretched, the stretched rigid sleeves 11 are clamped by V-shaped buckles, the liquid spraying holes 6 are aligned with the hole positions shot out by the bullets of the perforation holes 4, liquid is introduced into the liquid walking pipe 2, after the liquid is filled, the liquid is pressed into the liquid walking pipe 2, the first compression spring 18 is compressed, the pulley 20 slides along the sliding plate, the outer sleeve 3 rotates downwards, the liquid in the liquid walking pipe 2 is enabled to be aligned with the liquid spraying holes 6, the liquid in the hole positions 7 of the liquid walking pipe 2 is just sprayed into the holes shot out by the bullets 4, and residual elastic pieces in, and the cracks in the fractured hole sites are solidified, so that the effect of stably increasing the yield and the injection of the oil well is achieved; by adopting the technical scheme, the construction steps of fracturing the perforation 4 of the oil well are simplified, the problem of replacing the device for many times is avoided, the safety degree of operation is ensured, the solidification and high-pressure fracturing can be timely carried out on the ejected hole sites after the perforation 4, the stability of the guaranteed oil well cracks can prevent the cracks punched by the 4 bullets of the perforation from being closed easily, the perforation 4 for many times is avoided, the effectiveness and the safety of operation in the oil well are guaranteed, and the oil yield of the oil well can be kept in a stable state.
In another technical scheme, a circle of sealing ring 13 is coaxially sleeved on the outer wall of a main rod 1 at the upper part of the cylindrical barrel, a pair of pressure relief holes 17 is formed in the outer wall of the main rod 1 below the sealing ring 13, an expanding section is coaxially arranged in the main rod 1 at the upper part of the sealing ring 13, a plurality of third through holes are formed in the wall of the expanding section along the circumferential direction, a horizontal fixed needle rod 16 is arranged in each third through hole in a penetrating manner, one end of each fixed needle rod 16 penetrates through the outer wall of the main rod 1, the other end of each fixed needle rod 16 is positioned in the main rod 1, a limiting block 22 is arranged at one end of the fixed needle rod 16 positioned in the main rod 1, a second compression spring 15 is sleeved on the fixed needle rod 16, and two ends of the; when the second compression spring 15 is in an extension state, the limiting block is abutted against the outer wall of the liquid walking pipe 2, when the second compression spring 15 is in a compression state, one end of the fixed needle rod 16, which faces the inner wall of the main rod 1, penetrates out of the main rod 1 and penetrates into the inner wall of a drilled well, the diameter expanding section is fixedly connected with the second anti-corrosion sleeve 14 to form a cavity, the second compression spring 15, the limiting block and the fixed needle rod 16 are all sleeved in the cavity to form a component which cannot allow gas to pass through under a conventional state, the specific use method is that when a perforating bullet 4 explodes, a large amount of high-pressure gas is generated, the gas expands to drive the oil well high-energy gas fracturing production-increasing injector to move outwards, and potential safety hazards of personnel are easily caused, so that a pressure relief hole 17 is formed in the outer wall of the main rod 1, and the high-pressure gas flows outwards through the pressure relief hole 17, the high-pressure gas presses the second compression spring 15 to compress, so that the fixed needle rod 16 moves outwards to prick into the well wall of the oil well to fix the oil well high-energy gas fracturing production-increasing injector.
In another technical scheme, a plurality of baffle plates are arranged above the fixing component, the baffle plates are square plate bodies, the baffle plates are fixedly connected with the inner wall of the main rod 1, one side of each baffle plate is fixedly connected with the pipe wall of the main rod 1, and the other side of each baffle plate inclines towards an oil well mouth to achieve the purpose of pressure relief.
In another technical scheme, fixed needle bar 16's number is 6, is the symmetry setting, adopts this technical scheme to stabilize effectively oil well high energy gas fracturing production increase injection ware can seal mobile jib 1 effectively on the one hand for high-pressure gas's pressure can be as much as compression second compression spring 15, makes fixed needle bar 16 can be deeper insert in the oil well wall, reaches good fixed effect.
In another technical scheme, a high-temperature combustion improver is arranged on the outer wall of the detonating hole 5, and comprises: one of potassium chlorate, potassium nitrate and potassium permanganate adopts this technical scheme can make 4 bullets in perforation 4 improve the degree of depth of perforation 4 and the diameter of perforation 4 in the perforation 4 for the effect when carrying out the hydrojet acidizing afterwards is better, reaches the purpose of the increase production increase.
In another technical scheme, the lifting height of the lifting device is equal to the vertical distance between the liquid spraying hole 6 and the center of the perforation 4, the lifting height of the lifting device is the length obtained by subtracting the length obtained when the lifting device is folded from the length obtained when the lifting device is extended, and the length is just equal to the vertical distance between the liquid spraying hole 6 and the center of the perforation 4, so that the liquid spraying hole 6 just faces a ballistic hole ejected by a bullet of the perforation 4 after the device is pulled up, acid liquor can be directly sprayed into the ballistic hole during liquid spraying, and the technical scheme can effectively reduce the use amount of the acid liquor, prevent the acid liquor from polluting an oil layer and influence the quality of extracted oil.
In another technical scheme, a coaxial hollow guide tube is arranged on one side of the second through hole facing the cylinder center of the cylinder, the diameter of the guide tube is slightly larger than that of the slide rod 19, so that the slide rod 19 can slide in the guide tube, the length of the guide tube is smaller than the radius of the cylinder, the expansion and contraction of the first compression spring 18 are not affected, and by adopting the technical scheme, the sliding direction of the slide rod 19 can be effectively controlled.
In another technical solution, a coaxial hollow guide rod tube is disposed at one side of the third through hole facing the liquid feeding tube 2, the diameter of the guide rod tube is slightly larger than that of the fixed needle rod 16, so that the fixed needle rod 16 can slide in the guide rod tube, the length of the guide rod tube is smaller than the shortest distance from the inner wall of the diameter expansion section to the outer wall of the liquid feeding tube 2, and the expansion and contraction of the second compression spring 15 are not affected.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. The application, modifications and variations of the present invention to a well energetic gas fracturing stimulation and injection stimulation apparatus will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. Oil well high energy gas fracturing production increasing and injection increasing device is characterized by comprising:
the main rod is a hollow cylindrical barrel and is vertically arranged, the outer wall of the lower part of the main rod is provided with spirally wound perforating holes and liquid spraying holes, the perforating holes and the liquid spraying holes are arranged at intervals in the vertical direction, the upper end of each liquid spraying hole corresponds to one perforating hole, the bottom end of the main rod is fixedly provided with a horizontal partition plate, and an exploder is fixedly arranged below the partition plate;
the liquid feeding pipe is sleeved inside the main rod, the upper part of the liquid feeding pipe is vertically arranged and is coaxial with the main rod, the lower part of the liquid feeding pipe is spirally wound in the main rod, a first through hole is formed in the liquid feeding pipe corresponding to each liquid spraying hole, and the first through holes are communicated with the liquid spraying holes;
the cylinder barrel is vertically arranged, the diameter of the cylinder barrel is larger than that of the liquid walking pipe, the diameters of the upper end and the lower end of the cylinder barrel are reduced, the cylinder barrel is connected with the upper vertical part and the lower spiral part of the liquid walking pipe, a plurality of second through holes are formed in the cylinder wall of the cylinder barrel and the rod wall of the main rod in a penetrating mode along the same circumferential direction, a horizontal sliding rod penetrates through each second through hole, one end, facing the center of the cylinder barrel, of each sliding rod is provided with a fixed block, the other end of each sliding rod penetrates through the second through hole, the end portions of the sliding rods are connected with a pulley, the fixed blocks are abutted with each other, a first compression spring is sleeved on each sliding rod, two ends of each first compression spring are abutted with the fixed blocks and the inner wall of the cylinder barrel respectively, and the first compression spring, the sliding rods and the;
the outer sleeve is coaxially sleeved on the lower part of the main rod, matched threads are arranged at the lower end of the outer sleeve and the lower end of the main rod, a third compression spring is arranged at the bottom end of the outer sleeve, one end of the third compression spring is abutted to the bottom of the outer sleeve, the other end of the third compression spring is abutted to the partition plate, a blasting hole and a sieve mesh are arranged on the pipe wall of the outer sleeve, an inclined sliding plate is arranged at the upper end of the outer sleeve along the circumferential direction, and the pulley is abutted to the sliding plate; when the third compression spring is in a natural state, the pipe wall of the outer sleeve seals the liquid spraying hole, and the detonating hole is opposite to the perforation; when the first compression spring is compressed, the slide rod slides outwards along the slide plate, the third compression spring is compressed, and the outer sleeve spirally descends to enable the sieve pores to be opposite to the liquid spraying holes;
the lifting device comprises a ground grabbing ring at the bottom, the ground grabbing ring is of a horn-shaped structure with a small upper opening and a large lower opening, the edge of the large lower opening is of a sawtooth shape, a plurality of rigid sleeves with successively reduced diameters are coaxially arranged on the upper portion of the ground grabbing ring, a V-shaped elastic buckle is arranged on the upper portion of each rigid sleeve, a corresponding clamping hole is formed in the position, corresponding to the V-shaped elastic buckle, of the lower portion of each rigid sleeve, the rigid sleeves are connected in a tail closing mode, the upper portion of the rigid sleeve serving as the upper layer is connected with the bottom of the initiator, and the lifting height of the lifting device is equal to the vertical distance between the liquid spraying hole and the center of the perforation.
2. The oil well high energy gas fracturing production and injection increasing device according to claim 1, wherein a circle of sealing ring is coaxially sleeved on the outer wall of the main rod at the upper part of the cylindrical barrel, a pair of pressure relief holes are formed in the outer wall of the main rod below the sealing ring, an expanding section is coaxially arranged in the main rod at the upper part of the sealing ring, a plurality of third through holes are formed in the wall of the expanding section along the circumferential direction, a horizontal fixed needle rod is arranged in each third through hole in a penetrating manner, one end of each fixed needle rod penetrates through the outer wall of the main rod, the other end of each fixed needle rod is positioned in the main rod, a limiting block is arranged at one end of each fixed needle rod positioned in the main rod, a second compression spring is sleeved on each fixed needle rod, and two ends of each second compression; when the second compression spring is in an extension state, the limiting block is abutted against the outer wall of the liquid walking pipe, when the second compression spring is in a compression state, one end, facing the inner wall of the main rod, of the fixed needle rod penetrates out of the main rod and pricks into the inner wall of a drilling well, the diameter expanding section is fixedly connected with the second anti-corrosion sleeve to form a cavity, and the second compression spring, the limiting block and the fixed needle rod are all sleeved with the cavity.
3. The oil well high energy gas fracturing stimulation and injection device according to claim 1, wherein a plurality of baffle plates are arranged above the fixing component, and the baffle plates are fixedly connected with the inner wall of the main rod.
4. The oil well high energy gas fracturing stimulation and injection device as claimed in claim 1, wherein the number of the fixed needle rods is 6, and the fixed needle rods are symmetrically arranged.
5. The oil well high energy gas fracturing stimulation and injection device as claimed in claim 1, wherein the outer wall of the detonating hole is provided with a high temperature combustion improver.
6. The oil well high energy gas fracturing stimulation and injection device as claimed in claim 1, wherein the lifting height of said lifting means is equal to the vertical distance between the center of said liquid jet and the center of said perforation.
7. The oil well high energy gas fracturing stimulation and injection device according to claim 1, wherein a coaxial guide pipe is arranged on the side of the second through hole facing the cylinder core, and the diameter of the guide pipe is slightly larger than that of the sliding rod.
8. The oil well high energy gas fracturing stimulation and injection device according to claim 2, wherein a coaxial guide rod pipe is arranged on the side of the third through hole facing the liquid running pipe, and the diameter of the guide rod pipe is slightly larger than that of the fixed needle rod.
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| CN2276559Y (en) * | 1996-09-25 | 1998-03-18 | 西安石油学院 | Perforation-high energy gas fracturing device |
| CN101148980A (en) * | 2006-09-21 | 2008-03-26 | 史慧生 | Perforation and acidification pressing crack combined device for oil well |
| CN201982076U (en) * | 2011-04-22 | 2011-09-21 | 中国石油化工股份有限公司 | Jet-pressurizing combined high-efficiency sand blower |
| CN103075139A (en) * | 2011-10-26 | 2013-05-01 | 中国石油天然气股份有限公司 | Immovable pipe column hydraulic jet process for fracture acidizing and pipe column thereof |
| CN104975838B (en) * | 2015-07-17 | 2017-11-14 | 中国石油大学(华东) | A kind of method for preventing high enegry gas fracturing existing crack from closing |
| US10151172B1 (en) * | 2017-05-22 | 2018-12-11 | Lloyd Murray Dallas | Pressure perforated well casing collar and method of use |
| CN207315333U (en) * | 2017-10-16 | 2018-05-04 | 西安石油大油气科技有限公司 | A kind of high energy multiple pulse perforating and fracturing device |
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