CN204357409U - A kind of fluid pressure type can repeat switch waterpower spray gun - Google Patents

A kind of fluid pressure type can repeat switch waterpower spray gun Download PDF

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Publication number
CN204357409U
CN204357409U CN201420802952.0U CN201420802952U CN204357409U CN 204357409 U CN204357409 U CN 204357409U CN 201420802952 U CN201420802952 U CN 201420802952U CN 204357409 U CN204357409 U CN 204357409U
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CN
China
Prior art keywords
top connection
sliding sleeve
spray gun
gun body
transition joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420802952.0U
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Chinese (zh)
Inventor
宫娜娜
赵维斌
孙飞
邓小强
李景彬
张文
隆世明
张波
许建伟
杜加玉
姬祥
田文超
牛朋伟
张海涛
侯俊耀
冯欢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd filed Critical Changqing Downhole Operation Co of CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN201420802952.0U priority Critical patent/CN204357409U/en
Application granted granted Critical
Publication of CN204357409U publication Critical patent/CN204357409U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a kind of fluid pressure type can repeat switch waterpower spray gun, and comprise top connection, gun body, transition joint, lower contact and sliding sleeve, top connection, transition joint, gun body and lower contact are connected to form tubing string in turn, and sliding sleeve is positioned at tubing string inside; Top connection inside is provided with baffle ring, and top connection lower inner wall is provided with inner convex platform and penetrates the pressure relief vent of top connection tube wall, and pressure relief vent is positioned at above inner convex platform; Be provided with the spray-hole penetrating sliding sleeve tube wall in the middle part of sliding sleeve, the front end of sliding sleeve connects outer lug boss, and outer lug boss is positioned at below baffle ring, and outer lug boss bottom, top connection inwall, inner convex platform and sliding sleeve form track groove.By changing the size between tubing pressure and casing pressure, constantly realize the opening and closing of spray gun, like this in reverse circulating process, circulation canal will be formed in lower spray gun inside and outside oil pipe, in pit shaft, the proppant of deposition all will take pit shaft out of along with liquid stream, eliminate the risk of bit freezing, operating tool string will be tripped out smoothly.

Description

A kind of fluid pressure type can repeat switch waterpower spray gun
Technical field
The utility model belongs to oil field well construction operation technical field of tools, being specifically related to a kind of fluid pressure type can repeat switch waterpower spray gun, being the ingredient of the process pipe string realizing two bunches or many bunches hydraulic jetting fracturing constructions, is the indispensable instrument realizing thorough inverse circular sand washing adapter.
Background technology
Hydraulic fracturing technology have passed through the development of nearly half a century, particularly since the end of the eighties, all obtain in FRACTURING DESIGN, fracturing fluid and additive, proppant, fracturing unit and monitoring instrument and Crack Monitoring etc. and develop rapidly, make hydraulic fracturing technology all occur new breakthrough in fracture height control technology, high permeability formation sand control pressure break, refracturing, deep penetrating fracture and large sand amount multistage fracturing etc.
Present water conservancy pressure break is oilfield stimulation, augmented injection, keeps an important process technology of oilfield stable production.It utilizes the performance of liquid conduction pressure, high-pressure pump group is utilized on ground, with the discharge capacity being greater than formation absorption ability, high viscosity liquid is pumped in well, high pressure has been suppressed in shaft bottom, this pressure exceedes geostatic stress and the tensile strength of rock of oil reservoir, produce crack at bottom, continue the load fluid with proppant to inject crack, limit, crack obtains extension edge and is supported.Just define the Thief zone sand packed fracture with one fixed width at oil reservoir after termination of pumping, the oil gas flow channel due to this crack growth, change the type of flow, reduce filtrational resistance, can play increasing yield and injection effect, this work progress is exactly oil formation hydraulic fracturing.
Two bunches of jetting or many bunches spray fracturing technique and are used in low permeability formation rebuilding construction in a large number at present, and the spray gun of the many bunches of hydraulic jetting fracturings of present stage is that pitching is skidded cover unlatching spray gun, such spray gun cannot realize closed condition after switching.So after pressing crack construction terminates, in pit shaft after depositing support agent, in reverse circulating process, liquid can form passage in upper spray gun inside and outside oil pipe, therefore cannot take the proppant below upper spray gun out of pit shaft in reacting cycle process, easily lock of tool drilling occur.Therefore, for ensureing carrying out smoothly of hydraulic jetting fracturing technology multilayer construction, needing to develop fluid pressure type can repeat switch spray gun.
Utility model content
The purpose of this utility model is that the spray guns overcoming existing jetting two bunches or many bunches of injection pressure breaks mostly are pitching skidding cover unlatching spray gun, and this spray gun cannot realize cutting out after switching, the problem of easy generation lock of tool drilling.
For this reason, the utility model provides a kind of fluid pressure type can repeat switch waterpower spray gun, comprise top connection, gun body, lower contact and sliding sleeve, on gun body, circumference is distributed with multiple nozzle, also comprise transition joint, top connection, transition joint, gun body and lower contact are connected to form tubing string in turn, and it is inner that sliding sleeve is positioned at this tubing string;
Top connection inner upper is provided with baffle ring along inwall, and top connection lower inner wall is provided with inner convex platform and penetrates the pressure relief vent of top connection tube wall, and pressure relief vent is positioned at above inner convex platform;
Be provided with the spray-hole penetrating sliding sleeve tube wall in the middle part of sliding sleeve, the front end of sliding sleeve connects outer lug boss, and outer lug boss is positioned at below baffle ring, and outer lug boss bottom, top connection inwall, inner convex platform and sliding sleeve form track groove.
The length of described track groove equals the distance of the spray-hole hole heart and the nozzle bore heart.
Described top connection bottom is provided with multiple banking pin penetrating top connection tube wall, and the head of this banking pin is concordant with inner convex platform side.
Between described baffle ring and top connection inwall, top connection and transition joint junction, transition joint and gun body junction, gun body and lower contact junction be provided with sealing ring.
Described transition joint and the junction of top connection, gun body are multiple stage rank and are connected, and each the place of connecing all arranges sealing ring.
Described nozzle has three, and circumference is distributed on the tube wall of gun body, and described spray-hole quantity is three, respectively with three nozzles one_to_one corresponding in the axial direction.
Described top connection, transition joint, to be all threaded connection between gun body and lower contact, be followed successively by top connection lower end internal thread and transition joint upper external screw thread screws, transition joint lower end external screw thread and gun body upper end internal thread screw, and gun body lower end external screw thread and lower contact upper end internal thread screw.
The beneficial effects of the utility model: this fluid pressure type that the utility model provides can realize hydraulic pressure closedown by repeat switch waterpower spray gun, hydraulic pressure opening, in jetting work progress, can according to construction process requirement, the opening and closing of directed control spray gun, for two bunches of hydraulic jetting fracturing tubing strings, we can repeat switch spray gun with this fluid pressure type by spray gun, infusion in oil pipe, oil pressure raises, the sliding sleeve that pressure reduction opens spray gun will move down in pressure effect, open spray gun, realize hydraulic jetting fracturing.When pressure break terminates, infusion in annular space, promote casing pressure, the sliding sleeve of spray gun will move up under pressure, from being closedown spray gun.Like this in reverse circulating process, will form circulation canal in lower spray gun inside and outside oil pipe, in pit shaft, the proppant of deposition all will take pit shaft out of along with liquid stream, eliminate the risk of bit freezing, operating tool string will be tripped out smoothly.
Below with reference to accompanying drawing, the utility model is described in further details.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model is in spray gun closed condition.
Fig. 2 is the structural representation that the utility model is in spray gun opening.
Description of reference numerals: 1, top connection; 2, baffle ring; 3, track groove; 4, banking pin; 5, outer lug boss; 6, inner convex platform; 7, transition joint; 8, nozzle; 9, gun body; 10, lower contact; 11, spray-hole; 12, sliding sleeve; 13, pressure relief vent.
Detailed description of the invention
Embodiment 1:
The present embodiment provides a kind of fluid pressure type can repeat switch waterpower spray gun, as shown in Figure 1, comprise top connection 1, gun body 9, lower contact 10 and sliding sleeve 12, on gun body 9, circumference is distributed with multiple nozzle 8, also comprise transition joint 7, top connection 1, transition joint 7, gun body 9 and lower contact 10 are connected to form tubing string in turn, and it is inner that sliding sleeve 12 is positioned at this tubing string;
Top connection 1 inner upper is provided with baffle ring 2 along inwall, and top connection 1 lower inner wall is provided with inner convex platform 6 and penetrates the pressure relief vent 13 of top connection 1 tube wall, and pressure relief vent 13 is positioned at above inner convex platform 6;
Be provided with the spray-hole 11 penetrating sliding sleeve 12 tube wall in the middle part of sliding sleeve 12, the front end of sliding sleeve 12 connects outer lug boss 5, and outer lug boss 5 is positioned at below baffle ring 2, and outer lug boss 5 bottom, top connection 1 inwall, inner convex platform 5 and sliding sleeve 12 form track groove 3.
The enforcement principle of the present embodiment is as follows: in this structure of the present embodiment, pressure relief vent 13 achieves the interaction of tubing pressure and casing pressure, and casing pressure acts in track groove 3, and tubing pressure can act on sliding sleeve 12.
The initial position of spray gun as shown in Figure 1, now spray gun is in closed condition, be serially connected on oil pipe column, when needs or fracturing time, promote oily overpressure, make fluid pressure type can the pressure in repeat switch spray gun be greater than fluid pressure type can pressure outside repeat switch spray gun, now because outer lug boss 5 and sliding sleeve 12 bottom also exist difference in areas, so there is pressure differential in the tubing pressure acted on both, sliding sleeve 12 is at the moved downward of pressure differential, make outer lug boss 5 downwards until withstand inner convex platform 5, now nozzle 8 overlaps with spray-hole 11, as shown in Figure 2, spray gun is opened, complete fracturing.
When spray gun closed by needs time, promote casing pressure, make fluid pressure type can the pressure in repeat switch spray gun be less than fluid pressure type can pressure outside repeat switch spray gun, casing pressure enters track groove 3 by pressure relief vent 13, masterpiece is used in outer lug boss 5 bottom, and promotion outer lug boss 5 and sliding sleeve 12 move upward, and nozzle 8 and spray-hole 11 are departed from, spray gun cuts out, and comes back to position shown in Fig. 1.
Embodiment 2:
On the basis of embodiment 1, in the present embodiment, the length of track groove 3 equals the distance of the spray-hole 11 hole heart and the nozzle 8 hole heart.Such structure can make when outer lug boss 5 props up inner convex platform 6 time, just spray-hole 11 and nozzle 8 pairs of hearts, completes spray gun and opens.
Further, in the present embodiment, top connection 1 bottom is provided with multiple banking pin 4 penetrating top connection 1 tube wall, and the head of this banking pin 4 is concordant with inner convex platform 6 side.
The effect of banking pin 4 instead of the position-limiting action of inner convex platform 6, certainly now in structure in order to accurately, the length of track groove 3 should be the distance of outer lug boss 5 to banking pin 4, and this distance equals the distance of the spray-hole 11 hole heart and the nozzle 8 hole heart.
Embodiment 3:
In the present embodiment, between baffle ring 2 and top connection 1 inwall, top connection 1 is provided with sealing ring with gun body 9 junction, gun body 9 with lower contact 10 junction with transition joint 7 junction, transition joint 7.
Transition joint 7 is multiple stage rank with the junction of top connection 1, gun body 9 and is connected, and each the place of connecing all arranges sealing ring, and the sealed sealing on multiple stage rank is more effective.
The effect of sealing ring is that can only carry out the contact of external and internal pressure at track groove 3 place, Main Function principle of the present utility model, namely at track groove 3 place, so the interpolation of sealing ring, can more be conducive to enforcement of the present utility model in order to make spray gun external and internal pressure keep isolation.
In the present embodiment, nozzle 8 has three, and circumference is distributed on the tube wall of gun body 9, and described spray-hole 11 quantity is three, respectively with three nozzles 8 one_to_one corresponding in the axial direction.
Top connection 1, transition joint 7, to be all threaded connection between gun body 9 and lower contact 10, be followed successively by top connection 1 lower end internal thread and transition joint 7 upper external screw thread screws, transition joint 7 lower end external screw thread and gun body 9 upper end internal thread screw, and gun body 9 lower end external screw thread and lower contact 10 upper end internal thread screw.
In sum, this fluid pressure type of the present utility model can repeat switch waterpower spray gun, by changing the size between tubing pressure and casing pressure, constantly can realize the opening and closing of spray gun, like this in reverse circulating process, will form circulation canal in lower spray gun inside and outside oil pipe, in pit shaft, the proppant of deposition all will take pit shaft out of along with liquid stream, eliminate the risk of bit freezing, operating tool string will be tripped out smoothly.
More than exemplifying is only illustrate of the present utility model, does not form the restriction to protection domain of the present utility model, everyly all belongs within protection domain of the present utility model with the same or analogous design of the utility model.

Claims (7)

1. a fluid pressure type can repeat switch waterpower spray gun, comprise top connection (1), gun body (9), lower contact (10) and sliding sleeve (12), the upper circumference of gun body (9) is distributed with multiple nozzle (8), it is characterized in that: also comprise transition joint (7), top connection (1), transition joint (7), gun body (9) and lower contact (10) are connected to form tubing string in turn, and it is inner that sliding sleeve (12) is positioned at this tubing string;
Top connection (1) inner upper is provided with baffle ring (2) along inwall, and top connection (1) lower inner wall is provided with inner convex platform (6) and penetrates the pressure relief vent (13) of top connection (1) tube wall, and pressure relief vent (13) is positioned at inner convex platform (6) top;
Sliding sleeve (12) middle part is provided with the spray-hole (11) penetrating sliding sleeve (12) tube wall, the front end of sliding sleeve (12) connects outer lug boss (5), outer lug boss (5) is positioned at baffle ring (2) below, and outer lug boss (5) bottom, top connection (1) inwall, inner convex platform (5) and sliding sleeve (12) form track groove (3).
2. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: the length of described track groove (3) equals the distance of spray-hole (11) the hole heart and nozzle (8) the hole heart.
3. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: described top connection (1) bottom is provided with multiple banking pin (4) penetrating top connection (1) tube wall, and the head of this banking pin (4) is concordant with inner convex platform (6) side.
4. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: between described baffle ring (2) and top connection (1) inwall, top connection (1) is provided with sealing ring with transition joint (7) junction, transition joint (7) with gun body (9) junction, gun body (9) and lower contact (10) junction.
5. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: described transition joint (7) is multiple stage rank with the junction of top connection (1), gun body (9) and is connected, and each step place all arranges sealing ring.
6. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: described nozzle (8) has three, circumference is distributed on the tube wall of gun body (9), described spray-hole (11) quantity is three, respectively with three nozzles (8) one_to_one corresponding in the axial direction.
7. fluid pressure type as claimed in claim 1 can repeat switch waterpower spray gun, it is characterized in that: described top connection (1), transition joint (7), to be all threaded connection between gun body (9) and lower contact (10), be followed successively by top connection (1) lower end internal thread and transition joint (7) upper external screw thread screws, transition joint (7) lower end external screw thread and gun body (9) upper end internal thread screw, and gun body (9) lower end external screw thread and lower contact (10) upper end internal thread screw.
CN201420802952.0U 2014-12-18 2014-12-18 A kind of fluid pressure type can repeat switch waterpower spray gun Expired - Fee Related CN204357409U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420802952.0U CN204357409U (en) 2014-12-18 2014-12-18 A kind of fluid pressure type can repeat switch waterpower spray gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420802952.0U CN204357409U (en) 2014-12-18 2014-12-18 A kind of fluid pressure type can repeat switch waterpower spray gun

Publications (1)

Publication Number Publication Date
CN204357409U true CN204357409U (en) 2015-05-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500018A (en) * 2014-12-18 2015-04-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Hydraulic spray gun capable of being repeatedly switched on and off

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500018A (en) * 2014-12-18 2015-04-08 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Hydraulic spray gun capable of being repeatedly switched on and off

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150527

Termination date: 20211218

CF01 Termination of patent right due to non-payment of annual fee