CN204113152U - Oil well positive and negative sand washing nozzle - Google Patents
Oil well positive and negative sand washing nozzle Download PDFInfo
- Publication number
- CN204113152U CN204113152U CN201420402907.6U CN201420402907U CN204113152U CN 204113152 U CN204113152 U CN 204113152U CN 201420402907 U CN201420402907 U CN 201420402907U CN 204113152 U CN204113152 U CN 204113152U
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- China
- Prior art keywords
- sand washing
- core pipe
- nozzle
- ring
- duct
- 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 - Lifetime
Links
- 239000004576 sand Substances 0.000 title claims abstract description 128
- 238000005406 washing Methods 0.000 title claims abstract description 92
- 239000003129 oil well Substances 0.000 title claims abstract description 36
- 239000011148 porous material Substances 0.000 abstract 3
- 238000007789 sealing Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 description 16
- 239000012530 fluid Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Nozzles (AREA)
Abstract
The utility model provides a positive and negative sand washing nozzle of oil well, it includes: the sand washing device comprises a tubular sand washing body, wherein a ring part is arranged in a front port of the sand washing body, a plurality of pore channels are uniformly distributed on the ring part along the circumferential direction, the pore channels penetrate through the ring part along the axial direction of the sand washing body, and a nozzle is fixedly embedded in the pore channels; the core pipe is positioned in the sand washing body, an annular cavity communicated with the nozzle is formed between the core pipe and the sand washing body, the front end of the annular cavity is connected with the annular part, a stop part is arranged at the port part of the rear end of the annular cavity, a ball seat is annularly arranged on the inner surface of the core pipe, a plurality of channels are uniformly distributed on the side wall of the core pipe along the circumferential direction, the channels are adjacent to the rear side of the ball seat and correspond to inner cavities communicated with the annular cavity and the core pipe, a valve ball capable of correspondingly sitting and sealing the ball seat is additionally accommodated in the core pipe, and the valve ball can be movably arranged between the ball seat and the. The utility model discloses the sand washing ability is strong, and the sand discharge is fast, goes into the tubular column one time down and can realize the sand washing sand discharge operation, has positive sand washing and the back sand discharge function.
Description
Technical field
The utility model belongs to field of petroleum exploitation, in particular to the sand flushing nozzle for well maintenance in a kind of oil exploitation technology, and especially a kind of oil well positive negative sand washing nozzle.
Background technology
At present, no matter be peupendicular hole or horizontal well, or sand fracturing well stimulation well, due to time reason and technological reason, oil well ubiquity sand buries oil reservoir phenomenon, and some oil well sand settings are under fluid column compaction, and sand face can form a solid sand cap, affect oil well normally to produce, need sand washing.
Conventional sand washing method installs a nib in 73mm oil pipe lower end, and sand cleaning fluid is ejected into sand face from nib, suspended by sand, utilize the carrying capacity of fluid, shift out pit shaft.This method, because the diameter of nib is comparatively large, jet impact force is little, can not effectively divide loose sand cap, needs and screw drill are combined, namely, must bore with screw drill before sand washing and open sand face, then propose tubing string, more lower sand-flushing pipe column carries out sand washing, but, take screw drill to bore sand face and need 2 tubing strings, construction in continuous several days, efficiency is low, costly, production is delayed; In addition, if horizontal well sand washing, due to horizontal well self pit shaft feature, cause sand grains to be deposited on net horizontal section, in sand washing process, due to sand natural subsidence characteristic, conventional sand flushing tool is difficult to sand to discharge ground.
For this reason, someone adopts under in oil pipe and enters the method such as coiled tubing or multiinjector jet, improves sand washing effect, but still there is various problem.Such as, a denomination of invention is " multidirectional jet flow sand washing machine " (application number: Chinese patent application 201210252865.8), provide a kind of multidirectional jet flow sand washing machine, comprise sand washing machine body and nozzle, the outer peripheral face of sand washing machine body tip has several circulation ports, circulation port installs nozzle, and its advantage is that structure is simple, easy to process, with low cost, practical reliable, easy to operate; Shortcoming is from the annular space sediment outflow between oil pipe and sleeve pipe, and for 177.8mm sleeve pipe, annular space area is large, and discharge opeing upward velocity is low, carries sand ability.
In view of this, the design people, according to the Production design experience being engaged in this area and association area for many years, develops a kind of oil well positive negative sand washing nozzle, to solving prior art Problems existing.
Utility model content
The purpose of this utility model is to provide a kind of oil well positive negative sand washing nozzle, and sand washing ability is strong, and sediment outflow speed is fast, under enter one-trip string and can realize the operation of sand washing sediment outflow, there is positive sand washing and anti-sand discharge function.
For this reason, the utility model proposes a kind of oil well positive negative sand washing nozzle, it comprises:
One sand washing body in a tubular form, be provided with a ring portion in the front port of described sand washing body, described ring portion is circumferentially evenly equipped with multiple duct, described duct is along the through described ring portion of axis of described sand washing body, and its inside is embedded and is fixed with nozzle;
One core pipe, be arranged in described sand washing body, a ring cavity be connected with described nozzle is formed between described core pipe with described sand washing body, its front end is connected with described ring portion, the port of its rear end is provided with a stop part, the inner surface pressed on ring of described core pipe is established and is formed with a ball seat, its sidewall is circumferentially separately evenly equipped with multiple passage, described passage is adjacent to the rear side of described ball seat, its corresponding inner chamber being communicated with described ring cavity and described core pipe, the valve ball that one corresponding can set described ball seat is separately equipped with in described core pipe, described valve ball is mobile to be arranged between described ball seat and stop part.
Oil well positive negative sand washing nozzle as above, wherein, described duct includes one first duct and the second duct from front to back, the internal diameter in described first duct is less than the internal diameter in described second duct, both form a shoulder in joint, and described nozzle correspondence is embedded in described second duct, and its front end and described shoulder abut against, its rear end and one is embedded on front side of the pressure ring in described second duct and contacts, and described first duct is connected with described ring cavity by described nozzle.
Oil well positive negative sand washing nozzle as above, wherein, described core pipe includes a front linkage section and rear body section, the external diameter of described front linkage section is less than the external diameter of described rear body section, the joint of both lateral surfaces forms a shoulder block, described shoulder block correspondence is resisted against the rear end face of described ring portion and the rear side of described pressure ring, and described front linkage section is spirally connected fixing by the inner ring surface of external screw thread and described ring portion, and described passage and stop part are positioned in described rear body section.
Oil well positive negative sand washing nozzle as above, wherein, the internal diameter of described front linkage section is less than the internal diameter of described rear body section, and the joint of both medial surfaces forms described ball seat.
Oil well positive negative sand washing nozzle as above, wherein, be connected by a taper anchor ring between described front linkage section with the medial surface of described rear body section, described taper anchor ring is formed as the medial surface of described ball seat, and described valve ball energy correspondence sets on described taper anchor ring.
Oil well positive negative sand washing nozzle as above, wherein, described stop part is a straight pin, and described straight pin is radially arranged in described core pipe, and the sidewall of its two ends and described core pipe is connected and fixed.
Oil well positive negative sand washing nozzle as above, wherein, described stop part is a baffle ring, and described baffle ring is by external screw thread and described core pipe bolt, and its internal diameter is less than the diameter of described valve ball.
The utility model proposes oil well positive negative sand washing nozzle, by arranging valve ball and ball seat in core pipe, the function of ball-and-seat can be realized, control area of passage, that is, when positive sand washing (sand cleaning fluid enters from oil pipe column), core pipe is closed, reduce over flow area, improve sand washing ability; During recoil sand (sand cleaning fluid enters from oil jacket annular space), core tube cavity is opened, and expands area of passage, improves sediment outflow ability.
The utility model proposes oil well positive negative sand washing nozzle, utilize high-pressure water jet to break rock principle, under hydraulic action, sand cap can be destroyed, by positive sand washing and recoil being used alternatingly of sand, effectively realize the operation of sand washing sediment outflow.
The oil well positive negative sand washing nozzle that the utility model proposes, bores sand facies ratio with existing screw drill, and its structure is simple, easy to operate, and sand washing ability is strong, and sediment outflow speed is fast, saves time, and impact capacity is strong, and impact effect is good; By under enter one-trip string and can realize the operation of sand washing sediment outflow, horizontal well, high angle hole, peupendicular hole etc. can be applied to, applied widely.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of oil well positive negative sand washing nozzle of the present utility model.
Fig. 2 is the structural representation of sand washing body in Fig. 1.
Fig. 3 is the structural representation of Fig. 1 core pipe, not shown valve ball.
Critical element label declaration:
1 sand washing body 11 ring portion
12 duct, ducts 121 first
122 second ducts
13 nozzle 14 pressure rings
Linkage section before 2 core pipes 201
Body section 203 shoulder block after 202
21 ball seat 211 taper anchor rings
22 passage 23 valve balls
3 stop part H ring cavities
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of the oil well positive negative sand washing nozzle that the utility model proposes, structure, feature and effect, be described in detail as follows.In addition, by the explanation of detailed description of the invention, when can to the utility model for the technological means reaching predetermined object and take and effect are goed deep into concrete understanding more, but institute's accompanying drawing be only to provide with reference to and use is described, is not used for being limited the utility model.
Fig. 1 is the structural representation of oil well positive negative sand washing nozzle of the present utility model.Fig. 2 is the structural representation of sand washing body in Fig. 1.Fig. 3 is the structural representation of Fig. 1 core pipe, not shown valve ball.
As shown in Figure 1, be the oil well positive negative sand washing nozzle that the utility model proposes, it comprises sand washing body 1 and a core pipe 2, wherein:
Described sand washing body 1 in a tubular form, a ring portion 11 is provided with in the front-end port of described sand washing body 1, described ring portion 11 is circumferentially evenly equipped with multiple duct 12, and described duct 12 is along the through described ring portion 11 of axis of described sand washing body 1, and its inside is embedded and is fixed with nozzle 13, when underground work, by arranging nozzle 13, when injecting high velocity liquid stream in duct 12, can eject through nozzle 13 high-speed jet, impact force is large, can effectively break up sand cap;
Described core pipe 2 is arranged in described sand washing body 1, a ring cavity H is formed between described core pipe 2 and described sand washing body 1, described ring cavity H is connected with described nozzle 13, described core pipe 2 front end is connected with described ring portion 11, the port of its rear end is provided with a stop part 3, the inner surface pressed on ring of described core pipe 2 is established and is formed with a ball seat 21, its sidewall is circumferentially separately evenly equipped with multiple passage 22, described passage 22 is adjacent to the rear side of described ball seat 21, its corresponding inner chamber being communicated with described ring cavity H and described core pipe 2, the valve ball 23 that one corresponding can set described ball seat 21 is separately equipped with in described core pipe 2, described valve ball 23 is mobile to be arranged between described ball seat 21 and stop part 3.
Please also refer to Fig. 2, described duct 12 includes one first duct 121 and the second duct 122 from front to back, the internal diameter in described first duct 121 is less than the internal diameter in described second duct 122, both form a shoulder (not indicating in figure) in joint, described nozzle 13 correspondence is embedded in described second duct 122, its front end and described shoulder abut against, its rear end contacts with on front side of a pressure ring 14, described pressure ring 14 is embedded in described second duct 122, described 121, first duct is connected with described ring cavity H by described nozzle 13, in the utility model, by arranging shoulder and pressure ring 14, under both cooperatively interacting, this nozzle 13 can easily be fixed, make between this nozzle 13 and second duct 122 without the need to again with screw thread, the modes such as pin joint connect, more be convenient to nozzle 13 carry out assembling and changing.
As shown in Figure 3, described core pipe 2 includes a front linkage section 201 and rear body section 202, the external diameter of described front linkage section 201 is less than the external diameter of described rear body section 202, the joint of both lateral surfaces forms a shoulder block 203, described shoulder block 203 correspondence is resisted against the rear end face of described ring portion 11 and the rear side of described pressure ring 14, described front linkage section 201 is spirally connected fixing by the inner ring surface 111 of external screw thread and described ring portion 11, and described passage 22 and stop part 3 are positioned in described rear body section 202.
Wherein, the internal diameter of described front linkage section 201 is less than the internal diameter of described rear body section 202, and the joint of both medial surfaces forms described ball seat 21.Preferably, be connected by a taper anchor ring 211 between described front linkage section 201 with the medial surface of described rear body section 202, described taper anchor ring 211 is formed as the medial surface of described ball seat 21, and described valve ball 23 can correspondence set on described taper anchor ring 211.
Preferred described stop part 3 is a straight pin, and described straight pin is radially arranged in described core pipe 1, and its two ends are connected (as spot welding) and fix with the sidewall of described core pipe 1.Certainly, be not limited thereto in a particular application, such as, described stop part 3 also can be a baffle ring (not shown), and described baffle ring is by external screw thread and described core pipe bolt, and its internal diameter is less than the diameter of described valve ball.
The utility model proposes oil well positive negative sand washing nozzle, when specific works, the rear end of this sand washing body 1 is connected to oil pipe column lower end, form sand-flushing pipe column in the lump, be connected to pump truck in oil pipe column upper end by wellhead casing pipe, surface line, the upper hose of pump truck connects sand washing working liquid tank, afterwards, by in the sleeve pipe under this sand-flushing pipe column lower going-into-well, wherein:
When sand washing operation, ground pump truck pumps into high-speed liquid in oil pipe column, this high velocity liquid flows through oil pipe column and enters in ring cavity H and core pipe 2, wherein, under fluid impact effect, valve ball 23 sets on ball seat 21, thus close the inner chamber of core pipe, high-pressure fluid is only sprayed from nozzle high speed via ring cavity H, and fluid jet impacts the hard sand cap of oil well, form load fluid, realize sand washing operation;
When sediment outflow operation, ground pump truck pumps into highly pressurised liquid in the annular space (oil jacket annular space) between oil pipe column and sleeve pipe, this highly pressurised liquid takes the high-velocity fluid that sand suspension is formed, a part enters ring cavity through duct and nozzle, another part enters core pipe by core pipe lower end, under the effect of fluid impact, valve ball leaves ball seat, thus make core pipe be in open mode, make fluid can through core pipe lower end, passage enters ring cavity, thus expansion area of passage, make sand liquid upwards through the inner chamber of oil pipe column, return to ground, because oil pipe column size is little, flow velocity is fast, load fluid can be discharged pit shaft fast, thus realize sediment outflow operation.
Wherein, selecting for pump truck, can determine according to the casing-type of oil pipe column, down-hole, not do concrete restriction at this, such as, if 127mm sleeve pipe, 73mm oil pipe column, and available 1 400 type cement pump truck, directly positive sand washing, oil jacket annular space sediment outflow; If 139.7mm sleeve pipe, 73mm oil pipe, available 1 700 type cement oil jacket are positive sand washing directly, oil jacket annular space sediment outflow; If composite bushing (that is, 177.8mm sleeve pipe hangs the oil well of 127mm sleeve pipe), available 2 cement pump trucks, wherein 1 pump truck connects oil pipe column, other 1 pump truck female connector pipe, and blocked operation, realizes the anti-sediment outflow operation of positive sand washing.
The utility model proposes oil well positive negative sand washing nozzle, by arranging valve ball and ball seat in core pipe, the function of ball-and-seat can be realized, control area of passage, that is, when positive sand washing (sand cleaning fluid enters from oil pipe column), core pipe is closed, reduce over flow area, improve sand washing ability; During recoil sand (sand cleaning fluid enters from oil jacket annular space), core tube cavity is opened, and expands area of passage, improves sediment outflow ability.In actual use, by positive sand washing and recoil being used alternatingly of sand, the operation of sand washing sediment outflow can be realized.
The oil well positive negative sand washing nozzle that the utility model proposes, bores sand facies ratio with existing screw drill, and its structure is simple, easy to operate, and sand washing ability is strong, and sediment outflow speed is fast, saves time, and impact capacity is strong, and impact effect is good; By under enter one-trip string and can realize the operation of sand washing sediment outflow, horizontal well, high angle hole, peupendicular hole etc. can be applied to, applied widely.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, the equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (7)
1. an oil well positive negative sand washing nozzle, is characterized in that, described oil well positive negative sand washing nozzle comprises:
One sand washing body in a tubular form, be provided with a ring portion in the front port of described sand washing body, described ring portion is circumferentially evenly equipped with multiple duct, described duct is along the through described ring portion of axis of described sand washing body, and its inside is embedded and is fixed with nozzle;
One core pipe, be arranged in described sand washing body, a ring cavity be connected with described nozzle is formed between described core pipe with described sand washing body, its front end is connected with described ring portion, the port of its rear end is provided with a stop part, the inner surface pressed on ring of described core pipe is established and is formed with a ball seat, its sidewall is circumferentially separately evenly equipped with multiple passage, described passage is adjacent to the rear side of described ball seat, its corresponding inner chamber being communicated with described ring cavity and described core pipe, the valve ball that one corresponding can set described ball seat is separately equipped with in described core pipe, described valve ball is mobile to be arranged between described ball seat and stop part.
2. oil well positive negative sand washing nozzle as claimed in claim 1, it is characterized in that, described duct includes one first duct and the second duct from front to back, the internal diameter in described first duct is less than the internal diameter in described second duct, both form a shoulder in joint, described nozzle correspondence is embedded in described second duct, its front end and described shoulder abut against, its rear end and one is embedded on front side of the pressure ring in described second duct and contacts, and described first duct is connected with described ring cavity by described nozzle.
3. oil well positive negative sand washing nozzle as claimed in claim 2, it is characterized in that, described core pipe includes a front linkage section and rear body section, the external diameter of described front linkage section is less than the external diameter of described rear body section, the joint of both lateral surfaces forms a shoulder block, described shoulder block correspondence is resisted against the rear end face of described ring portion and the rear side of described pressure ring, and described front linkage section is spirally connected fixing by the inner ring surface of external screw thread and described ring portion, and described passage and stop part are positioned in described rear body section.
4. oil well positive negative sand washing nozzle as claimed in claim 3, it is characterized in that, the internal diameter of described front linkage section is less than the internal diameter of described rear body section, and the joint of both medial surfaces forms described ball seat.
5. oil well positive negative sand washing nozzle as claimed in claim 4, it is characterized in that, be connected by a taper anchor ring between described front linkage section with the medial surface of described rear body section, described taper anchor ring is formed as the medial surface of described ball seat, and described valve ball energy correspondence sets on described taper anchor ring.
6. the oil well positive negative sand washing nozzle as described in any one of claim 1 to 5, it is characterized in that, described stop part is a straight pin, described straight pin is radially arranged in described core pipe, and the sidewall of its two ends and described core pipe is connected and fixed.
7. the oil well positive negative sand washing nozzle as described in any one of claim 1 to 5, is characterized in that, described stop part is a baffle ring, and described baffle ring is by external screw thread and described core pipe bolt, and its internal diameter is less than the diameter of described valve ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402907.6U CN204113152U (en) | 2014-07-21 | 2014-07-21 | Oil well positive and negative sand washing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420402907.6U CN204113152U (en) | 2014-07-21 | 2014-07-21 | Oil well positive and negative sand washing nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113152U true CN204113152U (en) | 2015-01-21 |
Family
ID=52330476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420402907.6U Expired - Lifetime CN204113152U (en) | 2014-07-21 | 2014-07-21 | Oil well positive and negative sand washing nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| RU2717167C1 (en) * | 2018-11-30 | 2020-03-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Well bottomhole washing method |
-
2014
- 2014-07-21 CN CN201420402907.6U patent/CN204113152U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120987A (en) * | 2014-07-21 | 2014-10-29 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| CN104120987B (en) * | 2014-07-21 | 2017-01-25 | 中国石油天然气股份有限公司 | Oil well positive and negative sand washing nozzle |
| RU2717167C1 (en) * | 2018-11-30 | 2020-03-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Well bottomhole washing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |