CN205243492U - Blasting formula fracturing control valve - Google Patents
Blasting formula fracturing control valve Download PDFInfo
- Publication number
- CN205243492U CN205243492U CN201520655631.7U CN201520655631U CN205243492U CN 205243492 U CN205243492 U CN 205243492U CN 201520655631 U CN201520655631 U CN 201520655631U CN 205243492 U CN205243492 U CN 205243492U
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- sliding sleeve
- control valve
- central tube
- housing
- pressure
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Abstract
The utility model relates to a blasting formula fracturing control valve is applicable to the multistage staged fracturing well completion engineering of unconventional developments of resources such as hyposmosis oil reservoir and shale oil gas. This control valve includes the sliding sleeve, and the sliding sleeve is established between center tube and fracturing casing, is fixed through shear pin and fracturing casing, and the both ends of center tube and fracturing casing are connected with top connection and adapter sleeve respectively, and the lower part of adapter sleeve connects gradually a year shell case body, leads and explode casing and lower clutch, be equipped with on the center tube and shake out mouthful and explosion valve, carry the internal demolition bomb that is equipped with of shell case, lead to explode to be equipped with in the casing and ignite the subassembly and be equipped with the feed liquor hole at its inner wall, ignite the subassembly and be connected with the demolition bomb. Can shorten well completion construction cycle, effectively reduce construction operation expense and operating risk, can satisfy high -efficient, economic the employing and the applied production target of scale development of hyposmosis oil reservoir and shale oil gas reservoir.
Description
Technical field
The utility model relates to petroleum industry Horizontal Well fracturing construction tool, particularly a kind of blasting type fracturing control valve, be the kit in horizontal well multistage subsection pressure break completion tubular column, be applicable to the multistage subsection pressure break Well Completion Engineering of Oil Reservoirs of the unconventional development of resources such as low-permeability oil deposit and shale oil gas.
Background technology
China's low-permeability oil deposit reserves and shale oil gas aboundresources at present, but employ because production capacity is low, exploit of poor benefits being difficult to. How efficient, the economic unconventional resource such as low-permeability oil deposit and shale oil gas of employing is a long-term difficult problem of exploring. Staged fracturing of horizontal well technology is the key technology that solves this difficult problem, there is the features such as layer is many, silt particle mutual, it is scattered to distribute, abundance is low for such oil reservoir, the horizontal well multistage subsection pressure break completion technique series of studies such as horizontal well open hole packer multistage subsection pressure break completion technique, casing cementing pitching sliding sleeve staged fracturing completion technique and pumping bridging plug perforation staged fracturing connection work are carried out in recent years, its objective is in order to realize volume fracturing transformation, improve to greatest extent production capacity, realize benefit exploitation.
In horizontal well multistage subsection pressure break completion technique series, all can use key tool---pressure reduction sliding sleeve fracturing valve is the key tool that realizes first order pressing crack construction, and the service behaviour of this instrument has determined that can pressing crack construction be undertaken by design smoothly.
Along with the research and development of horizontal well multistage subsection pressure break completion technique series and the continuous expansion of application scale, pressure reduction sliding sleeve fracturing valve has exposed some problems in constructing at the scene, be mainly manifested in two aspects: the one, existing pressure reduction sliding sleeve fracturing valve is to rely on the upper and lower pressure reduction area difference of inner sleeve, when fluid pressure in sleeve pipe reaches after certain numerical value, can produce pressure differential, promote inner sleeve and cut off startup shear pin, open pressure reduction sliding sleeve fracturing valve and link up stratum. But when construction, based on security consideration pressing off before stratum, operational discharge capacity is less, when pressure reduction sliding sleeve fracturing valve is opened, cut off startup shear pin, pressure reduces rapidly, and now pressure reduction sliding sleeve fracturing valve exists the phenomenon that can not open completely, while causing pressure break, pressure reduction sliding sleeve fracturing valve is in half-open position, there is larger chock pressure difference in pressure break passage, not only can cause pressure reduction sliding sleeve fracturing valve sand jet outlet thorn bad, also because chock pressure difference causes operation pressure too high; The 2nd, if due to pressure reduction sliding sleeve fracturing valve design, selected unreasonable or assembling, constructing operation not at that time, the risk that can exist pressure reduction sliding sleeve fracturing valve normally not open, cause normally pressure break, need the later stage to be lowered to the instruments such as perforating gun and carry out remedial measure, cause long construction period, the appearance of the problems such as expense height. Therefore, be badly in need of addressing the above problem, improve technical merit and the application scale of this technique.
Summary of the invention
The purpose of this utility model is to provide a kind of blasting type fracturing control valve, for horizontal well multistage subsection pressure break completion technique provides reliable operationSupportingInstrument, connects the first paragraph at bore hole or well cementation pressure break completion tubular column by this instrument, relies on ground pumps hydraulic to open, and ensures reliably opening and the effective communication on stratum of pressure break passage, reduces the construction risk that pressure break passage can not normally be opened, and saves construction cost.
Technical solution of the present utility model is: a kind of blasting type fracturing control valve comprises sliding sleeve, sliding sleeve is located between central tube and pressure break housing, fixes by shear pin and pressure break housing, the two ends of central tube and pressure break housing are connected with top connection and adapter sleeve respectively, and the bottom of adapter sleeve connects successively a year body, leads quick-fried housing and lower contact; Central tube is provided with sand export and explosive valve, carries in body demolition bomb is housed, lead in quick-fried housing, be equipped with ignite assembly and therein wall be provided with inlet opening, ignite assembly and be connected with demolition bomb.
Remarkable result of the present utility model is: this tool design two kinds open pattern ensure pressure break passage in time, effectively open. The first mode of operation is only to need ground pumps hydraulic to make the explosion chip rupture in explosive valve, and highly pressurised liquid can enter in this instrument by explosive valve, promotes sliding sleeve extruding low-pressure air chamber, makes sliding sleeve descending fast, pressure break passage all can be opened; The second mode of operation is in the situation that the first mode of operation lost efficacy, and continues to increase the pressure reduction of ground pumps hydraulic, starts striker impact detonator, ignites the demolition bomb carrying in body, opens new pressure break passage. The opening pressure value of the second pattern is greater than the force value of the first mode of operation, and is less than casing safety force value, can ensure carrying out smoothly of the first mode of operation, can ensure again the work safety of sleeve pipe. This force value is to determine according to the section of shear of the pressure reduction face of striker and shear pin and shear pin quantity.
This instrument is provided with two kinds of mode of operations; use this instrument only by controlling the pressing crack construction that completes first paragraph in horizontal well multistage subsection fracturing technique series that pressure reduction just can be simple and reliable; avoid former pressure reduction sliding sleeve fracturing valve to have the problem that can not normally open; do not need pitching; do not need any instruments such as lower perforating gun perforation yet; can shorten completion construction period; effectively reduce construction operation expense and operating risk, can meet efficient, economic the employing and the productive target of scale Application and Development of low-permeability oil deposit and shale oil gas reservoir.
In sum, major advantage of the present utility model is as follows:
1, designed two kinds of mode of operations of opening this control valve, wherein the second mode of operation is the standby mode of the first mode of operation, makes the work of this instrument more safe and reliable.
2, in the first mode of operation, design explosive valve and low-pressure air chamber, can make sliding sleeve descending fast, reached the object of opening pressure break passage completely.
3, in the second mode of operation, design ignition assembly and demolition bomb, made demolition bomb explosion by igniting assembly, on year body, produced new pressure break passage.
Brief description of the drawings
Fig. 1 is tool construction schematic diagram of the present utility model;
Theory structure schematic diagram when Fig. 2 is the unlatching of the utility model the first mode of operation;
Theory structure schematic diagram when Fig. 3 is the unlatching of the utility model the second mode of operation.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail, arrive Fig. 3 referring to Fig. 1, a kind of blasting type fracturing control valve comprises sliding sleeve 4, sliding sleeve 4 is located between central tube 2 and pressure break housing 3, fixes by shear pin 5 and pressure break housing 3, the two ends of central tube 2 and pressure break housing 3 are connected with top connection 1 and adapter sleeve 11 respectively, and the bottom of adapter sleeve 11 connects successively a year body 12, leads quick-fried housing 13 and lower contact 14; Central tube 2 is provided with sand export 201 and explosive valve 6, carries in body 12 demolition bomb 15 is housed, lead in quick-fried housing 13, be equipped with ignite assembly and therein wall be provided with inlet opening 19, ignite assembly and be connected with demolition bomb 15. Sand export 201 and explosive valve 6 are all located on the middle part cylindrical step of central tube 2, and explosive valve 6 is located at the below of sand export 201; The cylindrical of central tube 2 is provided with capable of preventing covering upside down screw thread, and this capable of preventing covering upside down screw thread is located on the top cylindrical with adapter sleeve 11 junctions, can return up by anti-anti-skid sheath 4. The inner circle of sliding sleeve 4 is provided with step and matches with the middle part cylindrical step of central tube 2, and the bottom inner circle of sliding sleeve 4 is connected with lock ring 8, and the inner circle of this lock ring 8 is provided with the capable of preventing covering upside down threaded engagement of capable of preventing covering upside down screw thread and central tube 2 bottom cylindricals；The total length of sliding sleeve 4 is shorter than the length of disconnected section of central tube 2, after sliding sleeve 4 and central tube 2 and pressure break housing 3 are assembled, leaves low-pressure air chamber 9 below sliding sleeve 4. When after the explosion chip rupture of explosive valve 6, highly pressurised liquid impacts sliding sleeve 4 through explosive valve 6, makes sliding sleeve 4 be advanced into low-pressure air chamber 9 under fast, is sand export 201 and pressure break mouth 301'sOpen and provide safeguard fast. Explosive valve 6 comprises plug and explosion chip, and explosion chip is fixed in the centre bore of plug, and plug is threaded with central tube 2. The two ends cylindrical of adapter sleeve 11 is threaded and locking nail 10 is set in its threaded connection place respectively with pressure break housing 3 and a year body 12 respectively, ensures enough bonding strengths. Lead one end external diameter of quick-fried housing 13 little and be threaded with the little external diameter end of adapter sleeve 11 bottoms, make it and carry between body 12, to reserve cavity and load demolition bomb 15; The tube wall of leading quick-fried housing 13 bottoms is provided with double wall chamber, installs and ignite assembly in this double wall chamber. Ignite assembly and comprise primacord 16, detonator 17 and striker 18, primacord 16 upper ends through shell wall be connected with demolition bomb 15, lower end is connected with detonator 17, striker 18 is fixed in the double wall chamber of leading quick-fried housing 13 bottoms by shear pin 5. The lower body of striker 18 is provided with fit-up gap corresponding with the inlet opening 19 of leading quick-fried housing 13 inwalls with leading between the double wall chamber of quick-fried housing 13. The thickness of the explosion chip starting pressure required to sliding sleeve 4 is directly proportional; The starting pressure of striker 18 is greater than the burst pressure of explosion chip, and while ensureing that this instrument moves the first mode of operation, the second mode of operation is not activated. The utility model arranges sealing ring 7 in connection sealing place of each parts.
Using method is as following:
1, determining after the opening pressure grade of this instrument sliding sleeve 4, the explosion chip of relevant pressure grade is packed in explosive valve 6, and will be installed in the quick-fried housing 13 of leading of this instrument higher than striker 18 and the shear pin 5 of explosion chip burst pressure accordingly.
2, above-mentioned ready instrument is coupled to the first paragraph of horizontal well multistage subsection pressure break completion tubular column, G.I.H, installs device for fracturing wellhead, does not need by any instrument when pressure break, only need just can open sand export 201 and pressure break mouth 301 by hydraulic pressure, form pressure break passage.
3, by ground pumps hydraulic, the first mode of operation of this instrument of hydraulic pressure opening: when cover overpressure reaches after design pressure value, explosion chip rupture in explosive valve 6, opened the airtight cavity being made up of sealing ring 7, explosion chip and the sliding sleeve 4 of sand export 201 lower ends in central tube 2, highly pressurised liquid is promotion sliding sleeve 4 from explosive valve 6 enters. Sliding sleeve 4, under the effect of pressure reduction, is cut off shear pin 5, descending extruding low-pressure air chamber 9, and because low-pressure air chamber 9 inside and outside differential pressures are larger, and the compressibility of air is stronger, causes sliding sleeve 4 descending fast. Because lock ring 8 and central tube 2 lower ends are provided with capable of preventing covering upside down screw thread, carry out positioning and locking, ensure that sliding sleeve 4 unlatchings put in place, prevent that its resilience from closing, thereby open the pressure break passage being formed by pressure break mouth 301 and sand export 201 completely, cannula cavity and stratum are linked up mutually, carry out first paragraph pressure break.
If 4 the first mode of operations lost efficacy, while failing effectively to open, enable the second mode of operation. The starting pressure of this pattern increases certain pressure reduction on the pressure difference basis of the first Working mode set again, highly pressurised liquid is entered by inlet opening 19, promote striker 18 and cut off shear pin 5, the up impact detonator 17 of striker 18, detonator 17 is lighted primacord 16, ignites the multiple demolition bombs 15 that carry 12 li of bodies, makes to carry on body 12 to produce pressure break duct 20, cannula cavity and stratum are linked up mutually, carried out first paragraph pressure break.
Although the disclosed embodiment of the utility model as above, the embodiment that described content just adopts for the ease of understanding the utility model, not in order to limit the utility model. Technical staff under any the utility model in technical field; do not departing under the prerequisite of the disclosed mode of the utility model and structure; any modifications and variations of doing in the formal and details of implementing; and any amendment of making within pattern of the present utility model and framework, all belong to protection domain of the present utility model.
Claims (9)
1. a blasting type fracturing control valve, comprise sliding sleeve (4), it is characterized in that, sliding sleeve (4) is located between central tube (2) and pressure break housing (3), fixes by shear pin (5) and pressure break housing (3), the two ends of central tube (2) and pressure break housing (3) are connected with top connection (1) and adapter sleeve (11) respectively, and the bottom of adapter sleeve (11) connects successively a year body (12), leads quick-fried housing (13) and lower contact (14); Central tube (2) is provided with sand export (201) and explosive valve (6), carry in body (12) demolition bomb (15) is housed, lead in quick-fried housing (13), be equipped with ignite assembly and therein wall be provided with inlet opening (19), ignite assembly and be connected with demolition bomb (15).
2. a kind of blasting type fracturing control valve as claimed in claim 1, is characterized in that, described sand export (201) and explosive valve (6) are all located on the middle part cylindrical step of central tube (2), and explosive valve (6) is located at the below of sand export (201); The cylindrical of central tube (2) is provided with capable of preventing covering upside down screw thread, and this capable of preventing covering upside down screw thread is located on the top cylindrical with adapter sleeve (11) junction.
3. a kind of blasting type fracturing control valve as claimed in claim 2, it is characterized in that, the inner circle of described sliding sleeve (4) is provided with step and matches with the middle part cylindrical step of central tube (2), the bottom inner circle of sliding sleeve (4) is connected with lock ring (8), and the inner circle of this lock ring (8) is provided with the capable of preventing covering upside down threaded engagement of capable of preventing covering upside down screw thread and central tube (2) bottom cylindrical；The total length of sliding sleeve (4) is shorter than the length of disconnected section of central tube (2), after sliding sleeve (4) and central tube (2) and pressure break housing (3) are assembled, leaves low-pressure air chamber (9) in the below of sliding sleeve (4).
4. a kind of blasting type fracturing control valve as claimed in claim 1 or 2, is characterized in that, described explosive valve (6) comprises plug and explosion chip, and explosion chip is fixed in the centre bore of plug, and plug is threaded with central tube (2).
5. a kind of blasting type fracturing control valve as claimed in claim 1 or 2, is characterized in that, the two ends cylindrical of described adapter sleeve (11) is threaded and locking nail (10) is set in its threaded connection place respectively with pressure break housing (3) and a year body (12) respectively.
6. a kind of blasting type fracturing control valve as claimed in claim 4, it is characterized in that, described one end external diameter of leading quick-fried housing (13) is little and be threaded with the little external diameter end of adapter sleeve (11) bottom, makes it and carry between body (12), to reserve cavity and load demolition bomb (15); The tube wall of leading quick-fried housing (13) bottom is provided with double wall chamber, installs and ignite assembly in this double wall chamber.
7. a kind of blasting type fracturing control valve as claimed in claim 6, it is characterized in that, described ignition assembly comprises primacord (16), detonator (17) and striker (18), primacord (16) upper end through shell wall be connected with demolition bomb (15), lower end is connected with detonator (17), striker (18) is fixed in the double wall chamber of leading quick-fried housing (13) bottom by shear pin (5).
8. a kind of blasting type fracturing control valve as claimed in claim 7, is characterized in that, the lower body of described striker (18) is provided with fit-up gap corresponding with the inlet opening (19) of leading quick-fried housing (13) inwall with leading between the double wall chamber of quick-fried housing (13).
9. a kind of blasting type fracturing control valve as claimed in claim 7, is characterized in that, the thickness of the described explosion chip starting pressure required to sliding sleeve (4) is directly proportional; The starting pressure of striker (18) is greater than the burst pressure of explosion chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520655631.7U CN205243492U (en) | 2015-08-28 | 2015-08-28 | Blasting formula fracturing control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520655631.7U CN205243492U (en) | 2015-08-28 | 2015-08-28 | Blasting formula fracturing control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243492U true CN205243492U (en) | 2016-05-18 |
Family
ID=55942572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520655631.7U Expired - Fee Related CN205243492U (en) | 2015-08-28 | 2015-08-28 | Blasting formula fracturing control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243492U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064973A (en) * | 2015-08-28 | 2015-11-18 | 中国石油化工股份有限公司 | Blasting type fracturing control valve |
| CN108952624A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of infinite stages full-bore fracturing sliding bush |
| CN110130863A (en) * | 2019-04-26 | 2019-08-16 | 托普威尔石油技术股份公司 | A kind of toe-end valve |
-
2015
- 2015-08-28 CN CN201520655631.7U patent/CN205243492U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064973A (en) * | 2015-08-28 | 2015-11-18 | 中国石油化工股份有限公司 | Blasting type fracturing control valve |
| CN108952624A (en) * | 2017-05-19 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of infinite stages full-bore fracturing sliding bush |
| CN108952624B (en) * | 2017-05-19 | 2021-06-25 | 中国石油化工股份有限公司 | Infinite-stage full-bore fracturing sliding sleeve |
| CN110130863A (en) * | 2019-04-26 | 2019-08-16 | 托普威尔石油技术股份公司 | A kind of toe-end valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20190828 |