CN2858947Y - Beaming fracturing unit - Google Patents
Beaming fracturing unit Download PDFInfo
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- CN2858947Y CN2858947Y CN 200520079216 CN200520079216U CN2858947Y CN 2858947 Y CN2858947 Y CN 2858947Y CN 200520079216 CN200520079216 CN 200520079216 CN 200520079216 U CN200520079216 U CN 200520079216U CN 2858947 Y CN2858947 Y CN 2858947Y
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Abstract
The utility model is a new type of beaming fracturing unit used in oil and gas well fracturation, which consists of a beaming fracturing unit casing body, a synchro-igniter, a beaming fracturing charge, a beaming exhaust apparatus, a projectile body self-lock device and a pressure tester. The utility model can obtain beaming combustible airflow of high energy to perform pulse pressing fracturing to the oil-gas layer which then generates multiple radial long fracture. This improves the permeability of near well-bore area, communicates effectively with the formation natural fractures to form a fracture network, creates an oil flow channel, reduces oil flow resistance, and increases the productivity of the oil and gas well greatly. The utility model is of advanced technical principle, unique and novel structure, safe use, simple process, high efficacy, low cost and good economic benefit without damage to the oil and gas well casing tube or leaving over article in the oil and gas well.
Description
Technical field
The utility model relates to the technological innovation to traditional high energy gas fracturing device, be specifically related to a kind of novel, the boundling fracturing equipment that the oil gas well high-energy gas pressure break is used.
Background technology
As everyone knows, oil is the important energy material of Chinese national economy development.Along with Chinese national economy develops day by day rapidly, all trades and professions are more and more vigorous to the demand of energy and material.Therefore, the output of raising petroleum industry is pressing for of the national economic development.At present, one of reliable approach that improves oil production rate is exactly constantly to employ new technology, and the strength of depending on science and technology is quickened the development of petroleum industry.
High enegry gas fracturing is one of oil recovery new technology that begins to apply in China the last eighties in a century.Its know-why is that the HTHP burning gases that utilize gunpowder or propellant combustion to produce carry out the power loading to reservoir of oil and gas, when gaseous-pressure during greater than the fracture pressure on stratum, make the stratum produce many radial cracks, improve the permeability on stratum, reduce oil flow resistance, thereby the oil gas well is significantly increased production.
High enegry gas fracturing has experienced several stages applying of China's oil gas field:
First stage is to apply sectional combustion formula steel sheel cased well Pressure breaking bullet.During～nineteen ninety-five in 1988, sectional combustion formula cased well Pressure breaking bullet once in the oil field, Jiangsu, Yumen Oilfield, Shengli Oil Field, long celebrating oil field, Daqing oil field, Liaohe Oil Field, Jilin Oil Field, North China Oilfield, Zhongyuan Oil Field, Henan Oil Field, Karamay oilfield, tell oil field wide popularization and application such as breathing out the oil field.Though many oil gas wells have all been obtained fracturing yield increasing effect preferably, and many construction operation problems have also taken place in the use.Wherein topmost problem is because the designing technique defective of high energy gas fracturing device, pressure accumulated and the stack in the Pressure breaking bullet powder charge meeting generation bullet of sectional combustion from top to bottom, therefore, when gunpowder or propellant loading burning to last what the time, the accumulation and the stack that play internal pressure have produced the high pressure that surpasses the body bonding strength, cause shell case to come off and fall in the well.Caused thus after the high enegry gas fracturing construction, needed the secondary construction operation to salvage the work accident of junk in the well.Because fishing is time-consuming, influences the normal operation of oil gas well, so the advantage of high enegry gas fracturing is buried by its technological deficiency gradually.The enthusiasm that this technology is applied in the oil field disappears gradually.
Second stage is to apply broken combustion-type non-shell fracturing bullet.～the beginning of this century in 1996, in order to improve the performance of high energy gas fracturing device, eliminate the sectional combustion formula steel sheel cased well Pressure breaking bullet housing well that easily comes off, the drawback that usually needs the secondary construction to salvage junk, the technician who is engaged in high enegry gas fracturing has released broken combustion-type non-shell fracturing bullet again.This product has also carried out general applying in each oil field after releasing.But,, also exposed many design problems gradually along with the continuous application of product.One is exactly because the Pressure breaking bullet powder charge does not have the constraint of housing, and the breaking burning of gunpowder is uncontrollable progreesive burning.Therefore, the pressure of powder burning moment formation can be high especially, very likely surpasses the withstand voltage limit of oil gas casing, causes the damage of oil gas casing, thereby can lead to very big work accident, and this is that the oil field user is unallowable.It two is that the center of non-shell fracturing bullet has a point to pass fiery core pipe, and it is made of steel or alloy aluminium.Have 4 presplitting grooves on its longitudinally.When a fiery core pipe of biography is implemented igniting, presplitting groove cracking.It can become the shape of lantern frame under the internal pressure effect, is stuck in the pit shaft.Though non-shell fracturing bullet does not have the problem of shell case cast.But the core pipe metal that is deformed into lantern frame shape that they are a large amount of is lost in the well, and also the subsequent job engineering of oil supply gas well has been brought many troubles.In North China Oilfield oil district, through the oil gas well that high enegry gas fracturing is crossed, all salvaged distortion that a lot of something lost fall in the subsequent job process metal die.Facts have proved that breaking burning non-shell fracturing bullet does not solve the foreign matter well problem that falls yet.Because the existence of the problems referred to above makes High-Energy Gas Fracturing Technology be subjected to very big obstruction applying of China.
The utility model content
After the design defect of having analyzed above two kinds of high energy gas fracturing devices and drawback, we have developed success boundling fracturing equipment of the present utility model.It eliminates and has overcome all technological deficiencies and the design drawback of former high energy gas fracturing device, makes the safety of high enegry gas fracturing, and practicality and validity improve greatly, have opened up new technological approaches for increasing considerably the oil gas well capacity.
Technical solution of the present utility model is: a kind of boundling fracturing equipment, form by boundling fracturing equipment housing, synchronous points firearm, the powder charge of boundling pressure break, boundling fuel gas exhaust device, body self-locking device and pressure test device, be provided with the powder charge of multistage boundling pressure break in the boundling fracturing equipment housing, be provided with the synchronous points firearm in the powder charge of every section boundling pressure break, the housing tube wall is provided with boundling fuel gas exhaust device, socket between the multistage housing, shell end is provided with body self-locking device, and housing bottom is provided with pressure test device.
The compressive resistance that the fracturing equipment housing is made boundling fracturing equipment housing by high-intensity steel is equal to the compressive resistance of oil gas casing, housing is provided with boundling fuel gas exhaust device, boundling fuel gas exhaust device comprises the gas-flow plug hole, and the plug hole port is provided with the compound shutoff sheet of high strength steel and the making of heat resistant rubber glue.
Described body self-locking device is made of following part: the two-piece housing end is provided with the trapezoidal thread socket, is provided with sealing ring between the two-piece housing.
High combustion speed is adopted in boundling pressure break powder charge in the fracturing equipment, and---the mixed charge compacting of low burning rate propellant forms low burning rate---high combustion speed---, and the fire proofing cladding is adopted on the inside and outside surface of boundling pressure break powder charge.
Boundling pressure break powder charge two ends are provided with pod apertures.
Be provided with two pressure measurement storehouses in the pressure test device, all be provided with copper crusher and the storage type P-T curve tester that to measure surge pressure in each pressure measurement storehouse, the pressure tap in a pressure measurement storehouse is towards boundling fracturing equipment inside, and the pressure tap in another pressure measurement storehouse is towards the annular space space of boundling fracturing equipment outside.
The utility model is the technological innovation to traditional high energy gas fracturing device, its objective is the technological deficiency of eliminating and overcoming traditional high energy gas fracturing device, obtains high-octane boundling gas-flow, oil-gas Layer is implemented pulse load pressure break.Make reservoir of oil and gas produce the long cracks of many radiation-like, improve the permeability of oil gas well near wellbore zone effectively, and with stratum intrinsic fracture effective communication, form fracture network, create oil flow channel, reduce oil flow resistance, improve the oil gas well capacity significantly.The utility model product technology principle advanced person, project organization uniqueness, novelty, safe in utilization, technology is easy, does not damage the oil gas casing, does not leave over junk in the oil gas well, the effect height, cost is low, and is good in economic efficiency.It is the state-of-the-art technical products that is fit to the oil gas well high-energy gas pressure break.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a boundling fuel gas exhaust apparatus structure schematic diagram.
Fig. 3 is a body self-locking apparatus structure schematic diagram.
Fig. 4 is a boundling pressure break charge constitution schematic diagram.
The specific embodiment
A kind of boundling fracturing equipment, form by boundling fracturing equipment housing 1, synchronous points firearm 2, boundling pressure break powder charge 3, boundling fuel gas exhaust device 4, body self-locking device 5 and pressure test device 6, be provided with multistage boundling pressure break powder charge 3 in the boundling fracturing equipment housing 1, be provided with synchronous points firearm 2 in every section boundling pressure break powder charge 3, the tube wall of housing 1 is provided with boundling fuel gas exhaust device 4, socket between the multistage housing 1, housing 1 end is provided with body self-locking device 5, and housing 1 bottom is provided with pressure test device.
At first; in order to implement high enegry gas fracturing safely; protection oil gas casing is injury-free; the utility model has changed the design of non-shell fracturing bullet fully; adopted the steel shell 1 of the boundling fracturing equipment of new structure; make propellant loading fully constrain in burning controllably among the housing, like this, with regard to complete obiteration the high-pressure gas that produces of uncontrollable burning the destruction of oil gas casing 7 is threatened.Can guarantee the safety work of pressing crack construction.
Secondly, design philosophy of the present utility model is to carry out technological innovation from project organization, has changed the powder charge design philosophy of sectional combustion fully, and innovative design goes out body self-locking device 5, in the hope of solving the problem that the fracturing device housing comes off fully.Make after fracturing work finishes, what housing can be complete takes out from well, does not stay any remains, and the trouble that does not cause the secondary construction to salvage is guaranteed safe construction.
Boundling fracturing equipment housing 1 of the present utility model adopts high strength steel to make, its compressive resistance is suitable with the oil gas casing, boundling pressure break powder charge 3 all constrains in the housing internal combustion, therefore, as long as fracturing equipment housing 1 does not break, do not damage, can complete taking-up from oil well, the safety that the oil field user just fully can relieved oil well casing 7.Be sure of that fracturing process will not damage sleeve pipe.The constraint of fracturing equipment housing 1 has been played the reliable protection effect to the safety of oil well casing.
On the tube wall of fracturing equipment housing 1, have the fuel gas exhaust device of outwards draining for the boundling gas-flow 4 (referring to Fig. 2).Different with former high energy gas fracture bomb is, boundling fuel gas exhaust device comprises gas-flow plug hole 11, and plug hole 11 ports are provided with the compound shutoff sheet that high strength steel 12 and heat resistant rubber 13 make and carry out shutoff.Compound shutoff sheet not only has very high compressive resistance, can tolerate the head of liquid in the pit shaft.And has a very high heat resistance.Can tolerate the high temperature of liquid in the pit shaft, the effect of compound shutoff is very good.Its shutoff operation is convenient, and is reliable, leakage accident can not take place.
The charge constitution design of the burning of the cased well high energy gas fracture bomb segmented before the utility model has changed.Think that the powder charge design of segmented burning can produce the interior pressure accumulated and pressure superposition of bullet.Especially in what powder charge of back, the high pressure destruction that can cause body to be connected of accumulation and stack, the generation shell case well accident that comes off.Boundling fracturing equipment of the present utility model has adopted the powder charge of each section boundling pressure break to distinguish the powder charge pattern of ignition simultaneously, like this, the powder charge of each section boundling pressure break is all in this piece housing 1 internal combustion, the problem that pressure is accumulated stack piecemeal can not occur, the problem that body connects sustain damage has obtained basic solution.
Igniting when realizing in the boundling fracturing equipment pressure break powder charge, design and installation has synchronous points firearm 2 in every section pressure break powder charge 3 in the boundling fracturing equipment, no matter the boundling fracturing equipment adopts the cable sparking mode or clashes into sparking mode, ignition signal all can instantaneously from top to bottom be passed in the synchronous points firearm of each section pressure break powder charge, cause the synchronous points firearm, with each section pressure break powder charge simultaneous ignition.Realize after the simultaneous ignition, the powder charge of each section pressure break is all respectively in self housing internal combustion, avoided accumulation burning from top to bottom effectively, also prevented accumulation and the stack of pressure in what housing of back effectively, eliminated shell case from project organization and connected the drawback that is damaged, prevented from that shell case problem ground takes place effectively.
In addition, for the further generation of prevention shell case case accident, the utility model has adopted the project organization of body self-locking device 5 (referring to Fig. 3) on body connects.Described body self-locking device 5 is made of following part: two-piece housing 1 end is provided with trapezoidal thread 15 sockets, is provided with sealing ring 14 between the two-piece housing 1.Its technical characterstic is: after 3 burnings of pressure break powder charge in the fracturing equipment, when the gaseous-pressure that produces in the fracturing equipment affacted on the shell of the projectile body 1, positive pressure had produced the side direction partial pressure to housing wall inclined-plane.Under the effect of this partial pressure, shell case connects can produce self-locking power, makes the interconnect function of sealing ring 14 that body connects and trapezoidal thread 15 more and more tighter, and can not produce the slippage pulling force, and this has just further guaranteed reliability that body connects.
In order to improve and to improve the boundling fracturing equipment oil gas well is carried out the validity of high enegry gas fracturing, bigger technological improvement has also been carried out in the boundling pressure break powder charge 3 in the boundling fracturing equipment.Gunpowder in traditional cased well high energy gas fracture bomb or propellant loading are unconfined medicines in bulk, just gunpowder or propellant are filled in the Pressure breaking bullet housing dispersedly.The burning of gunpowder is unordered with uncontrollable.And pressure break powder charge of the present utility model is the propellant shaped-charge (referring to Fig. 4) that special compacting assembles, bodies of charges is cylinder-like structure, its inner surface 18 and external surface 19 all clad with fire proofing, and gunpowder in the bodies of charges or propellant can only controllably burn along combustion front.In its vertical combining structure, propellant is by height combustion speed 16, and---the propellant combination compacting of the difference combustion speed of low burning rate 17---high combustion speed 16---low burning rate 17 forms.In the combustion process of pressure break powder charge,---the pulsatile change of low-pressure---high pressure---low-pressure that the pressure in the fracturing equipment presents high pressure.Like this, the combustion gas in the fracturing equipment is when the stratum boundling erupts, and the pressure that can show pulsed changes.Formation rock is under the effect of pulse, and meeting is splitting variation forward constantly, and forked crack system is propped up in the continuous extension, expansion and the formation that help crack 8.Pressure break is made the seam effect and is improved greatly.Thus, pit shaft 7 can improve with the communication effectiveness of reservoir of oil and gas 10 at all, and the fracturing yield increasing effect can significantly improve.In order to realize the boundling discharging of powder gas, effectively power pulse is implemented on the stratum and loaded pressure break, around the powder charge of boundling pressure break, designed boundling fuel gas exhaust device 4, boundling pressure break powder charge (3) two ends are provided with pod apertures (20), boundling fuel gas exhaust 4 devices have adopted the Laval nozzle design principle of rocket propulsion, make powder gas enter the convergence device through pod apertures 20, enter expander then, powder gas is accelerated into high-speed fuel gas stream under the guiding of exhaust plant pod apertures (20), boundling is to 10 eruptions of hydrocarbon stratum reservoir, make the powder gas energy implement the pressure break acting to the stratum in the concentrated area more, improve the pressure break mechanical efficiency.
In addition, in order correctly to assess the pressure break effect of boundling fracturing equipment, pressure test device 6 is arranged, two pressure measurement storehouses are arranged in pressure test device in the tail end design of boundling fracturing equipment.Copper crusher and the storage type P-T curve tester that can measure surge pressure all are housed in each pressure measurement storehouse.The pressure tap in a pressure measurement storehouse is towards boundling fracturing equipment inside.The pressure tap in another pressure measurement storehouse towards the annular space sky of boundling fracturing equipment outside to.Like this can with in the fracturing equipment and well in surge pressure and P-T curve determination and note.
Boundling fracturing equipment of the present utility model is through after above-mentioned design improvement and the technological innovation, the many designing technique defectives and the drawback of former cased well high energy gas fracture bomb and non-shell fracturing bullet have been solved highlightedly, many outstanding technical characterstics have been demonstrated, reached the new height of technological innovation, make the high enegry gas fracturing construction operation safer, efficient.
Boundling fracturing equipment of the present utility model has carried out the Performance Detection test on ground.What test was used is 5 meters of diameters, highly is 1.2 meters annular concrete target.The concrete target center is cast with the oil well casing of 5 inches.Be placed with 1 meter long boundling fracturing equipment in the sleeve pipe, explosive payload is 2.5kg/m.During test,, make concrete target splitting fully on 4 directions of 2.5 meters of radiuses with cable igniting, instantaneous the lighting of gunpowder boundling pressure break powder charge, high-speed fuel gas adfluxion Shu Dingxiang eruption.Oil well casing is excellent, and boundling fracturing equipment housing does not have any distortion, has reached purpose of design fully.
Embodiment one: T5131 well, well depth 2918m, core intersection 5.8m, oil reservoir position: 2512.2～2518m, lithology: sandstone.This well is low owing to permeability, and output is lower always after the operation, day production fluid 5M
3/ d, day produce oil 2.5t/d, adopt the boundling fracturing equipment to carry out high enegry gas fracturing in September, 2004, and construction operation is smooth, after the operation, the complete proposition from well of the long fracturing equipment of 6m, the fracturing equipment housing does not have any distortion, and the pressure break powder charge is all burnt, and does not have junk in any well.After the pressure break, day production fluid 19M
3/ d, day produce oil 8.5t/d, effect of increasing production highly significant.
Embodiment two: y4583 well, well depth 2319m, core intersection 8.6m, oil reservoir position: 1934.5～1943.1m.Lithology: grey matter packsand.After this well was gone into operation, output descended year by year, and current production rate is lower, day production fluid 8M
3/ d, day produce oil 3.6t/d.Adopt the boundling fracturing equipment to carry out pressure break in April, 2005, and construction operation is smooth.Behind the fracturing work, the boundling fracturing equipment is complete proposition from well, does not have any damage.Pressure break powder charge burning is complete, no any junk in the well.Go into operation rapidly after the pressure break, a day production fluid reaches 26M
3/ d, day produce oil 9.5t/d.The fracturing yield increasing effect is very good.
Claims (6)
1. boundling fracturing equipment, it is characterized in that: by boundling fracturing equipment housing (1), synchronous points firearm (2), boundling pressure break powder charge (3), boundling fuel gas exhaust device (4), body self-locking device (5) and pressure test device (6) are formed, be provided with multistage boundling pressure break powder charge (3) in the boundling fracturing equipment housing (1), be provided with synchronous points firearm (2) in every section boundling pressure break powder charge (3), housing (1) is provided with boundling fuel gas exhaust device (4), socket between the multistage housing (1), housing (1) end is provided with body self-locking device (5), and housing (1) bottom is provided with pressure test device (6).
2. boundling fracturing equipment according to claim 1, it is characterized in that: fracturing equipment housing (1) is made by high-intensity steel, the compressive resistance of boundling fracturing equipment housing (1) is equal to the compressive resistance of oil gas casing, the tube wall of housing (1) is provided with boundling fuel gas exhaust device (4), boundling fuel gas exhaust device comprises gas-flow plug hole (11), and plug hole (11) port is provided with the compound shutoff sheet of high strength steel (12) and heat resistant rubber (13) making.
3. boundling fracturing equipment according to claim 1 is characterized in that: described body self-locking device (5) is made of following part: two-piece housing (1) end is provided with trapezoidal thread (15) socket, is provided with sealing ring (14) between the two-piece housing (1).
4. according to the described boundling fracturing equipment that gets of claim 1, it is characterized in that: high combustion speed is adopted in the boundling pressure break powder charge (3) in the fracturing equipment, and---the mixed charge compacting of low burning rate propellant forms low burning rate---high combustion speed---, and the inside and outside surface of boundling pressure break powder charge (3) (18,19) adopt the fire proofing cladding.
5. according to the described boundling fracturing equipment of claim 1, it is characterized in that: boundling pressure break powder charge (3) two ends are provided with pod apertures (20).
6. according to the described boundling fracturing equipment of claim 1, it is characterized in that: be provided with two pressure measurement storehouses in the pressure test device (6), all be provided with copper crusher and the storage type P-T curve tester that to measure surge pressure in each pressure measurement storehouse, the pressure tap in a pressure measurement storehouse is towards boundling fracturing equipment inside, and the pressure tap in another pressure measurement storehouse is towards the annular space space of boundling fracturing equipment outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079216 CN2858947Y (en) | 2005-08-09 | 2005-08-09 | Beaming fracturing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079216 CN2858947Y (en) | 2005-08-09 | 2005-08-09 | Beaming fracturing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2858947Y true CN2858947Y (en) | 2007-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079216 Expired - Fee Related CN2858947Y (en) | 2005-08-09 | 2005-08-09 | Beaming fracturing unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN2858947Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080527A (en) * | 2010-12-29 | 2011-06-01 | 西安通源石油科技股份有限公司 | Method and device for detonating and fracturing scattered objects |
| CN109113701A (en) * | 2017-06-24 | 2019-01-01 | 高九华 | Using air as the anti-reflection technology of pulsating pressure-air creep pressure break and device of medium |
| CN113513293A (en) * | 2021-04-23 | 2021-10-19 | 西南石油大学 | Oil gas production increasing method based on discharge plasma pulse shock wave acidification liquid injection promotion |
| CN114890854A (en) * | 2022-05-11 | 2022-08-12 | 北京宇箭动力科技有限公司 | Composite high-energy material with built-in full-charge fracturing bomb and preparation method thereof |
-
2005
- 2005-08-09 CN CN 200520079216 patent/CN2858947Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080527A (en) * | 2010-12-29 | 2011-06-01 | 西安通源石油科技股份有限公司 | Method and device for detonating and fracturing scattered objects |
| CN109113701A (en) * | 2017-06-24 | 2019-01-01 | 高九华 | Using air as the anti-reflection technology of pulsating pressure-air creep pressure break and device of medium |
| CN113513293A (en) * | 2021-04-23 | 2021-10-19 | 西南石油大学 | Oil gas production increasing method based on discharge plasma pulse shock wave acidification liquid injection promotion |
| CN114890854A (en) * | 2022-05-11 | 2022-08-12 | 北京宇箭动力科技有限公司 | Composite high-energy material with built-in full-charge fracturing bomb and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070117 Termination date: 20130809 |