CN203488159U - Novel three-dimensional sand control screen - Google Patents
Novel three-dimensional sand control screen Download PDFInfo
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- CN203488159U CN203488159U CN201320573404.0U CN201320573404U CN203488159U CN 203488159 U CN203488159 U CN 203488159U CN 201320573404 U CN201320573404 U CN 201320573404U CN 203488159 U CN203488159 U CN 203488159U
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- sand control
- control screen
- base tube
- overcurrent protection
- hole
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Abstract
The utility model relates to a novel three-dimensional sand control screen. The novel three-dimensional sand control screen comprises a center base tube, filtering pieces, a supporting tray and an overflowing protective sleeve. A plurality of overflowing holes are formed in the tube wall of the center base tube. The filtering pieces are filled into the overflowing holes. The supporting tray is composed of a first tray body and a second tray body, and the first tray body and the second tray body are fixedly arranged at the two ends of the center base tube respectively. The overflowing protective sleeve is coaxially arranged outside the center base tube in a sleeved mode, and the two ends of the overflowing protective sleeve are fixed on the center base tube through the first tray body and the second tray body respectively. The overflowing protective sleeve is provided with a plurality of arch structures, and each arch structure and the overflowing protective sleeve form two sand filtering grooves. According to the novel three-dimensional sand control screen, the overflowing protective sleeve is arranged on the outer layer, the filtering pieces are arranged on the inner layer, the erosion prevention effect and the filtering effect are good, particularly a good sand prevention and protection effect can be achieved for gravel pack, sidetracked hole windowing remaining burrs, and operating well drilling and removing float collar and float shoe remaining burrs.
Description
Technical field
The utility model belongs to Oil/gas Well sand control technique field, specifically, relates to a kind of sand control installation, particularly relates to a kind of novel solid sand control screen.
Background technology
In production of hydrocarbons process, the phenomenon of shaking out of Oil/gas Well various degrees, sand control, control sand are the keys that production life of well was normally produced, improved to assurance Oil/gas Well, sand control screen is the important completion tool of controlling sand production of oil-gas wells, having there is multinomial patented technology both at home and abroad in the research for sand control screen, is summarised as following several structure:
(1) slotted liner: simple in structure, cost is low, construction is easy, but circulation area is little, can not prevent fine sand; Self-cleaning ability is poor, and the gap of cracking is easily stopped up, easily by erosion; Gap is single vertical masonry joint, and compressive strength is low; In the medium coarse sand grain oil reservoir that is adapted at going on business not serious, use;
(2) wire-wrapped screen: site operation is complicated, task difficulty is large; Intensity is low, easily come off; Seepage area is little; The flexural deformation of screen casing affects predefined sieve seam size, affects sand control precision;
(3) there is the sand control screen of composite ratings sand filter structure: the sand control screen pack of composite screen pipe is welded into cylindric meeting screen pack is caused to damage; Internal protective cover, sand control screen pack, outer jointing jacket are set on base tube from level to level, have between the layers gap, easily make screen pack compressive deformation, affect filtering accuracy and even cause sand control failure; Filtration beds is long-pending sand plug plug easily;
(4) expandable screen: expandable screen site construction technology is complicated, and cost is higher, and duty cycle is long, has construction risk; Strength decreased after expandable screen expands, weak at the tension and the anti-twisting property that connect buckle; Be not suitable for deep camber well and long well section application; That in the bore hole borehole wall, pastes is too tight, can bring resistance to seepage flow, build-up of pressure loss.
Along with the increase of task difficulty, window burr, well in operation of sidetracked hole bores and leaves over burr and the large phenomenon ubiquity of gravel packed well erosive force except float collar float plug; The well in operation of these hole conditions is more and more higher to the requirement of sand control screen, and earial drainage area is large, sand control precision is high, high temperature resistant, fluid erosion prevention, intensity sand control screen high, simple to operate are the essential sand preventing tools of current completion practice.Therefore, providing a kind of sand control screen that can overcome the weak point that above-mentioned screen casing exists different well ' s conditions is current oil gas well sand control technique field problem demanding prompt solution.
Utility model content
The purpose of this utility model is to be; for existing screen casing to the existing deficiency of different well ' s conditions; simultaneously for window burr, well in operation of sidetracked hole, bore and leave over burr and the large feature of gravel packed well erosive force except float collar, float shoe; provide a kind of novel solid sand control screen with filtration members and overcurrent protection cover, not only sand control but also protect filtration members not by erosion, scratch.
For achieving the above object, novel solid sand control screen of the present utility model, comprises center base tube, filtration members, supporting disk and overcurrent protection cover; On the tube wall of center base tube, offer a plurality of flowing holes; Filtration members is filled out and is located in described flowing hole; Supporting disk, consists of the first disk body and the second disk body, and described the first disk body and the second disk body are fixedly installed on respectively the two ends of described center base tube; Overcurrent protection cover, coaxial sleeve is located at the outside of described center base tube, and the two ends of described overcurrent protection cover are fixed on the base tube of described center by described the first disk body and described the second disk body respectively; Wherein, described overcurrent protection puts and is provided with a plurality of bow-shaped structurals, and described in each, bow-shaped structural and described overcurrent protection cover forms two filter sand grooves.
In preferred embodiment of the present utility model, described a plurality of bow-shaped structurals are interspersed along the circumferencial direction of described overcurrent protection cover, to form outer filter sand, the safeguard structure of novel solid sand control screen.
In preferred embodiment of the present utility model, described bow-shaped structural is for to put and to be stamped to form in described overcurrent protection.
In preferred embodiment of the present utility model, described overcurrent protection is enclosed within the inwall of bow-shaped structural position described in each and is close on the excircle of described center base tube, guarantees that described arch bridge has enough impact strengths.
In preferred embodiment of the present utility model, described bow-shaped structural and described flowing hole are interspersed, to form two-layer sand control, filter sand layer.
In preferred embodiment of the present utility model, described overcurrent protection set upper side is soldered on described the first disk body, and lower end is soldered on described the second disk body, and has space to form axial current by pass between described overcurrent protection cover and described center base tube.
In preferred embodiment of the present utility model, described flowing hole is countersunk head through hole.
In preferred embodiment of the present utility model, be provided with a plurality of auxiliary through hole on the step surface of described countersunk head through hole, described a plurality of auxiliary through hole be take the aperture of described countersunk head through hole and are circumference uniform distribution as the center of circle, form radially flow channels of sand control screen.
In preferred embodiment of the present utility model, described filtration members screws to connect by screw thread and is embedded in the macropore of described countersunk head through hole.
In preferred embodiment of the present utility model, described filtration members is high temperature resistant, etch-proof stainless steel stereo metal fiber, and metallic fiber structure and formation rock gonosome are approximate, forms sand grains filtration and infiltration band.
The utility model compared with prior art tool has the following advantages:
(1) by sheathed overcurrent protection cover outside the base tube of the center of screen casing; one deck filter sand, safeguard structure have been increased; reduced burr, impacted and the injury of corrosion to filtration members; reduced float collar, float shoe, burr, the damage of the hard thing in down-hole to screen casing in screen casing process under completion practice; while having reduced sidetracking, window and when burr, well in operation bore except float collar float plug, reject the damage of unclean residual burr to screen casing, the erosion attack to screen casing while having alleviated gravel pack completion.
(2) by put punching press arch bridge in outer overcurrent protection, form filter sand groove, form outer sand control filtration; Arch bridge and center base tube form current by pass, make novel solid sand control screen axial flow good, are difficult for stopping up, and seepage flow is effective, further improve control sand ability.
(3) in the counter sink on the base tube of novel solid sand control screen center, inlay three-dimensional stainless steel metal fibre, form novel solid sand control screen internal layer sand control filtration channel, guarantee that screen casing has good radially negotiability.
(4) skin of novel solid sand control screen " overcurrent protection cover " and internal layer sand control " filtration members ", form protection, control sand dual structure, guarantees Radial Flow and the axial flow circulation passage of screen casing, makes screen casing seepage flow effective, is difficult for stopping up.
(5) overcurrent protection cover of the present utility model is fixed together by welding and supporting disk; and the inwall that overcurrent protection is enclosed within bow-shaped structural position is tightly posted on the excircle of center base tube; both strengthened arched intensity; between You Shi center base tube and overcurrent protection cover, form equally distributed current by pass; increased flow and the earial drainage area of fluid, and effectively prevented that sand grains from stopping up flowing hole.
(6) the utility model, can be because of the filter sand effect of bow-shaped structural and flowing hole eclipse effect flowing hole because the flowing hole on bow-shaped structural and center base tube is interspersed.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of novel solid sand control screen of the present utility model;
Fig. 2 is the partial structurtes schematic diagram of novel solid sand control screen of the present utility model;
Fig. 3 is the partial structurtes schematic diagram of the overcurrent protection cover in Fig. 1;
Fig. 4 is the partial structurtes schematic diagram of the filtration members in Fig. 1.
Wherein, Reference numeral
1-center base tube
11-flowing hole
111-macropore
112-aperture
12-auxiliary through hole
2-filtration members
3-supporting disk
The 31-the first disk body
The 32-the second disk body
4-overcurrent protection cover
5-screw
6-bow-shaped structural
7-filter sand groove
The specific embodiment
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model being described in detail, further to understand the purpose of this utility model, scheme and effect, but is not the restriction as the utility model claims protection domain.
Referring to figs. 1 through Fig. 3, the novel solid sand control screen shown in the present embodiment, comprises center base tube 1, filtration members 2, supporting disk 3 and overcurrent protection cover 4.On the tube wall of Gai center base tube 1, offer a plurality of flowing holes 11, a plurality of flowing holes 11 are uniform staggered with along circumference.Filtration members 2 is filled out and is located in flowing hole 11.Supporting disk 3 consists of the first disk body 31 and the second disk body 32, and the first disk body 31 and the second disk body 32 are fixedly installed on respectively the two ends of center base tube 1.The outside that 4 coaxial sleeves are located at center base tube 1 is overlapped in overcurrent protection, and the two ends of overcurrent protection cover 4 are fixed on center base tube 1 by the first disk body 31 and the second disk body 32 respectively.On overcurrent protection cover 4, be provided with a plurality of bow-shaped structurals 6, and each bow-shaped structural 6 forms two filter sand grooves 7 with overcurrent protection cover 4.
In the present embodiment, a plurality of bow-shaped structurals 6 are interspersed along the circumferencial direction of overcurrent protection cover 4.Preferably; bow-shaped structural 6 can be on overcurrent protection cover 4 and is stamped to form; overcurrent protection cover 4 inwalls in each bow-shaped structural position are close on the excircle of center base tube 1; the upper end of overcurrent protection cover 4 is soldered to the first disk body 31; lower end is soldered to the second disk body 32, and has space to form a current by pass between overcurrent protection cover 4 and center base tube 1.Like this, both strengthened the intensity of bow-shaped structural 6, and between You Shi center base tube 1 and overcurrent protection cover 4, formed equally distributed current by pass, thereby can increase flow and the earial drainage area of fluid, and effectively prevented that sand grains from stopping up flowing hole.
Further, bow-shaped structural 6 is interspersed with the flowing hole 11 on center base tube 1, thereby can be because of the filter sand effect of bow-shaped structural 6 with flowing hole 11 eclipse effect flowing holes.
As preferred embodiment, the first disk body 31 and the second disk body 32 are fixing by surface soldered and center base tube 1 respectively, and this surface soldered mode Bu Huidui center base tube 1 body causes stress rupture, has therefore reduced certain risk; And the first disk body 31 and the second disk body 32 tighten together with center base tube 1 by screw 5 respectively, its bonding strength is improved.
Consult Fig. 4, in the utility model, flowing hole 11 is countersunk head through-hole structure, on the step surface of countersunk head through hole 11, be provided with the example that has provided 8 auxiliary through hole in a plurality of auxiliary through hole 12(Fig. 4, but in actual use not as limitation), a plurality of auxiliary through hole 12 be take the aperture 111 of countersunk head through hole and are circumference uniform distribution as the center of circle, and filtration members 2 is embedded in the macropore 112 of countersunk head through hole by thread connection.Filtration members 2 adopts stainless steel metal fibre material, high temperature resistant, anticorrosive; And the structure of metallic fiber and formation lithology complex are approximate, the hole gap forming is like this little, surface tension is little, cellar area permeability is high, sand control precision further improves, intensity is better, can meet window burr, well in operation of sidetracked hole and bore the completion and sand control technological requirement of rejecting the complex job wells such as unclean residual burr, gravel packed well erosive force be large except float collar float plug.
In other embodiments, the auxiliary through hole quantity arranging on the flowing hole quantity arranging on the base tube of center and the step surface of flowing hole, can select according to the actual diameter of center base tube, length dimension and filter sand precision, in this restriction that do not fix.
The advantage of the present embodiment is: inside has filtration members 2 sand control structures, and 4 fluid erosion preventions, sand control filtration are overlapped in outer setting overcurrent protection, forms double filtration safeguard structure, and novel solid sand control screen sand control, erosion resistance intensity are further improved.Inner sand control filtration members 2 has guaranteed Radial Flow effect; outside overcurrent protection cover 4 forms axial annular space current by pass with center base tube 1; guaranteed the axial circulation of novel solid sand control screen; the filter sand groove of the anti-sand hole of filtration members and overcurrent protection cover is difficult for blocked, control sand, osmotic effect are good.
Certainly; the utility model also can have other various embodiments; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (10)
1. a novel solid sand control screen, is characterized in that, comprising:
Center base tube, offers a plurality of flowing holes on its tube wall;
Filtration members, fills out and is located in described flowing hole;
Supporting disk, consists of the first disk body and the second disk body, and described the first disk body and the second disk body are fixedly installed on respectively the two ends of described center base tube;
Overcurrent protection cover, coaxial sleeve is located at the outside of described center base tube, and the two ends of described overcurrent protection cover are fixed on the base tube of described center by described the first disk body and described the second disk body respectively;
Wherein, described overcurrent protection puts and is provided with a plurality of bow-shaped structurals, and described in each, bow-shaped structural and described overcurrent protection cover forms two filter sand grooves.
2. novel solid sand control screen according to claim 1, is characterized in that, described a plurality of bow-shaped structurals are interspersed along the circumferencial direction of described overcurrent protection cover.
3. novel solid sand control screen according to claim 1, is characterized in that, described bow-shaped structural is for to put and to be stamped to form in described overcurrent protection.
4. according to the novel solid sand control screen described in any one in claim 1-3, it is characterized in that, described overcurrent protection is enclosed within the inwall of bow-shaped structural position described in each and is close on the excircle of described center base tube.
5. novel solid sand control screen according to claim 4, is characterized in that, described bow-shaped structural and described flowing hole are interspersed.
6. novel solid sand control screen according to claim 4; it is characterized in that; described overcurrent protection set upper side is soldered on described the first disk body, and lower end is soldered on described the second disk body, and has space to form axial current by pass between described overcurrent protection cover and described center base tube.
7. novel solid sand control screen according to claim 1, is characterized in that, described flowing hole is countersunk head through hole.
8. novel solid sand control screen according to claim 7, is characterized in that, is provided with a plurality of auxiliary through hole on the step surface of described countersunk head through hole, and described a plurality of auxiliary through hole be take the aperture of described countersunk head through hole and are circumference uniform distribution as the center of circle.
9. novel solid sand control screen according to claim 8, is characterized in that, described filtration members screws to connect by screw thread and is embedded in the macropore of described countersunk head through hole.
10. novel solid sand control screen according to claim 9, is characterized in that, described filtration members is stainless steel stereo metal fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573404.0U CN203488159U (en) | 2013-09-16 | 2013-09-16 | Novel three-dimensional sand control screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573404.0U CN203488159U (en) | 2013-09-16 | 2013-09-16 | Novel three-dimensional sand control screen |
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| Publication Number | Publication Date |
|---|---|
| CN203488159U true CN203488159U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320573404.0U Expired - Lifetime CN203488159U (en) | 2013-09-16 | 2013-09-16 | Novel three-dimensional sand control screen |
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| Country | Link |
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| CN (1) | CN203488159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628845A (en) * | 2013-09-16 | 2014-03-12 | 中国海洋石油总公司 | Novel stereo sand control screen |
-
2013
- 2013-09-16 CN CN201320573404.0U patent/CN203488159U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628845A (en) * | 2013-09-16 | 2014-03-12 | 中国海洋石油总公司 | Novel stereo sand control screen |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140319 |
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| CX01 | Expiry of patent term |