CN204804790U - Sand -prevention screening tube - Google Patents
Sand -prevention screening tube Download PDFInfo
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- CN204804790U CN204804790U CN201520382401.8U CN201520382401U CN204804790U CN 204804790 U CN204804790 U CN 204804790U CN 201520382401 U CN201520382401 U CN 201520382401U CN 204804790 U CN204804790 U CN 204804790U
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- base tube
- sand control
- control screen
- seam
- bar
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Abstract
The utility model provides a sand -prevention screening tube, include: the parent tube sets up the connecting piece of parent tube one end, wherein, at least, set up a set of filtration seam in the axial of parent tube, every group filters to stitch and contains a plurality of seams strip, a plurality of seams strip is followed radial even setting of parent tube, just the siphonozooid of parent tube for adopting the aluminum alloy to make, the utility model provides a sand -prevention screening tube, solved present sand -prevention screening tube stop up or the well in bury the back and come out to lead to the fact the delay of exploitation progress and oil well condemned economic loss problem because of salvaging.
Description
Technical field
The utility model relates to a kind of oil well, gas well sand control technique field, particularly a kind of sand control screen of easy brill.
Background technology
In the recovery process of Oil/gas Well, sand control technique directly can affect quality and the exploitation effect of Oil/gas Well, also be related to the life-span of Oil/gas Well simultaneously, therefore sand control technique is most important in the recovery process of Oil/gas Well, and promote sand control technique development and need to constantly bring forth new ideas to sand preventing tool and process matched therewith thereof, wherein, sand preventing tool the most conventional in oil gas well mining process is sand control screen, sand grains in the output object of stratum can be blocked in outside sand control screen by sand control screen, good sand control object can be played, thus prevent sand production from causing holddown phenomenon.
The sand-proof pipe generally used in oil field operation is at present wire-wrapped screen and common cutting seam sieve tube, wherein, wire-wrapped screen is made by stainless steel metal boxing steel wire, wire-wrapped screen is fixed on oil pipe or base tube is stopped by the sieve seam formation sand on wire-wrapped screen, thus plays sand control object; Common cutting seam sieve tube is that multiple finedraw filters the sand grains in payzone by cutting out multiple finedraw on the body of sleeve pipe or oil pipe, thus plays sand control effect.
But, easily " sleave phenomenon " is there is in wire-wrapped screen in oil well post-processed, cause screen damage or gap distortion, total completion time and sand controlling result is caused to reduce or lost efficacy, and wire-wrapped screen and common cutting seam sieve tube bury in blocking or well after be all to salvage out, the progress of mining operations can be had a strong impact on like this, even cannot be able to salvage out because of screen casing and cause oil well to scrap, cause tremendous economic to lose.
Utility model content
The utility model provides a kind of sand control screen, solves after existing sand control screen is buried in blocking or well and causes because salvaging out the economic loss problem that mining progress is delayed and oil well is scrapped.
The utility model provides a kind of sand control screen, comprising:
Base tube, is arranged on the connector of described base tube one end, wherein,
At least one group of filtration of axially offering of described base tube is stitched, and often group filtration seam comprises multiple seam bar, and described multiple seam bar is evenly arranged along the radial direction of described base tube, and described base tube is the tubular body adopting aluminium alloys to make.
In specific embodiments of the present utility model, the described filtration of 2-4 group of axially offering of described base tube is stitched.
In specific embodiments of the present utility model, described often group is filtered seam and is comprised described in 16-24 bar and stitch bar.
In specific embodiments of the present utility model, one end of described base tube is threaded with described connector.
In specific embodiments of the present utility model, described connector is box cupling, and one end of described box cupling is provided with the internal thread that the external screw thread that arranges with described base tube periphery matches, and the other end of described box cupling is provided with cannula carrier screw thread.
In specific embodiments of the present utility model, described base tube is provided with sleeve pipe male thread away from the other end periphery of described connector.
In concrete scheme of the present utility model, the thickness of described base tube is 5-9mm.
In concrete scheme of the present utility model, the length of described seam bar is 40-80mm.
In concrete scheme of the present utility model, the width of described seam bar is 0.1mm-1mm.
The utility model provides a kind of sand control screen, by comprising base tube and being arranged on the connector of described base tube one end, one group of filtration of axially at least offering of described base tube is stitched, often group filtration seam comprises multiple seam bar, described multiple seam bar is evenly arranged along the radial direction of described base tube, sand grains in payzone can be blocked in outside sand control screen by seam bar, play sand control effect, and described base tube is the tubular body adopting aluminium alloys to make, like this when sand control screen blocking or when needing after burying to salvage, base tube due to this sand control screen is the base tube adopting aluminium alloys to make, therefore this sand control screen easily bores, by boring grinder tool, sand control screen can be drilled to multiple fragment like this, and aluminium alloys density is lower, the multiple fragments be drilled to so are easily taken out of at well liquid circulation time, achieve the salvage of sand control screen, sand control screen is easily eliminated in well, and then solve existing sand control screen after blocking or burying in well because salvaging out the economic loss problem causing mining progress delay and oil well to scrap.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model sand control screen;
Fig. 2 is the arrangement schematic diagram stitching bar in the utility model sand control screen;
Fig. 3 is the partial cutaway schematic view of the utility model sand control screen;
Fig. 4 is the another structural representation of the utility model sand control screen;
Fig. 5 is the generalized section in B-B direction in Fig. 4.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The sand control screen that the present embodiment provides can be applied to the operation of the oil gas well mining such as oilfield and gas well completion, be mainly used in reservoir sand gear outside screen casing, realize sand control effect, during application, first sand control screen is needed to enter well, be specially sand control screen and be connected into well mutually with oil pipe or sleeve pipe, be placed near payzone, medium after sand control screen filters to enter in oil pipe or sleeve pipe and is drawn out of, sand grains in payzone is blocked in outside sand control screen, stays in payzone and can formation play a supporting role.
Fig. 1 is the structural representation of the utility model sand control screen, Fig. 2 is the arrangement schematic diagram stitching bar in the utility model sand control screen, as shown in Figure 1, sand control screen comprises: base tube 1, be arranged on the connector 2 of base tube 1 one end, connector 2 is for being connected base tube 1 with sleeve pipe or oil pipe, in the present embodiment, A is stitched at least one group of filtration of axially offering of base tube 1, in actual applications, the filtration seam group number that base tube 1 is offered specifically decides according to the length of base tube 1 and the length of filter seam, such as when the length of base tube 1 is longer, many groups can be offered filter seam A on base tube 1, or when filtering seam length and being shorter, also can offer many groups and filter seam A on base tube 1, the present embodiment can be as shown in Figure 1, A are stitched in two groups of filtrations of axially offering of base tube 1, and two groups are filtered between seam A and axially there is interval at base tube 1.
In the present embodiment, often group filtration seam A comprises multiple seam bar a, multiple seam bar a is evenly arranged along the radial direction of base tube 1, seam bar a makes the outside of base tube 1 communicate with its internal channel, stratum liquid can flow in base tube 1, but the sand grains supporting stratum is blocked in outside base tube 1, can not flow in oil pipe, thus play the effect of sand control sand block, it should be noted that, if the width (i.e. gap) of seam bar a is too little, sand control screen is easy to blocking, if the width of seam bar a is too large, reservoir sand easily enters in oil pipe, sand controlling result can not be played, so, the width of seam bar a is specifically can stop that reservoir sand is advisable outside base tube.
In the present embodiment, it should be noted that, except as shown in Figure 1 base tube 1 axially offer two groups filter seam A, and exist outside interval between two groups of filtration seam A, shown in Fig. 2, can also filter seam A in many groups of axially offering of base tube 1, often group is filtered seam A and is comprised multiple seam bar a, axially spaced apart at base tube 1 of multiple seam bar a, the multiple seam bar a namely base tube 1 offered irregularly are distributed on the external surface of base tube 1.
Further, in the present embodiment, when base tube 1 being offered seam bar a, the width of seam bar a on base tube 1 external surface can be equal with the width of seam bar a on base tube 1 inner surface, namely the cross section stitching bar a is rectangle, or the width of seam bar a on base tube 1 external surface is greater than the width of seam bar a on base tube 1 inner surface, namely the cross section stitching bar a is trapezoidal, can increase area of passage like this.
In the present embodiment, due in prior art, sand control screen is all be made up of alloy steel, the general hardness of alloy steel, intensity is all larger, crushing resistance is stronger, but existing sand control screen is once block or bury, sand cleaning fluid to rush the degree of depth limited, the sand of screen casing inside can not be rushed out, sand control screen is not easily drilled to fragment simultaneously, there is blocking or bury generally all cannot salvaging out in existing like this sand control screen, and when sand control screen is trapped in well, oil mining efficiency can be had a strong impact on, salvage out to make the sand control screen blocking or bury, in the present embodiment, the body that the base tube 1 of sand control screen adopts aluminium alloys to make, namely the material of base tube 1 replaces with aluminum alloy material by existing alloy steel, wherein, aluminium alloys take aluminium as the alloy general name of base material, density is lower than alloy steel, lighter weight under same volume, hardness is low, good corrosion resistance, long service life, easy fragmentation, like this after sand control screen is submerged, only need general brill grinder tool just sand control screen can be drilled to fragment, namely the sand control screen provided in the present embodiment easily bores, and due to light weight, just fragment can be taken out of from well by the circulation of well liquid after being drilled to fragment, namely the sand control screen that the present embodiment provides easily is eliminated when being submerged in well or blocking, so the sand control screen that the utility model provides can be salvaged out from well, salvage when sand control screen like this and can continue oil mining, thus reduce workover number of times and learies, and then decrease economic loss.
The sand control screen that the present embodiment provides, by comprising base tube and being arranged on the connector of described base tube one end, at least one group of filtration of axially offering of described base tube is stitched, often group filtration seam comprises multiple seam bar, described multiple seam bar is evenly arranged along the radial direction of described base tube, sand grains in payzone can be blocked in outside sand control screen by seam bar, play sand control effect, and described base tube is the tubular body adopting aluminium alloys to make, like this when sand control screen blocking or when needing after burying to salvage, base tube due to this sand control screen is the base tube adopting aluminium alloys to make, therefore this sand control screen easily bores, by boring grinder tool, sand control screen can be drilled to multiple fragment like this, and aluminium alloys density is lower, the multiple fragments be drilled to so are easily taken out of at well liquid circulation time, achieve the object of easy the to be salvaged removing of sand control screen, thus solve existing sand control screen after blocking or burying in well because salvaging out the economic loss problem causing mining progress delay and oil well to scrap.
Further, on the basis of above-described embodiment, in the present embodiment, the 2-4 group of axially offering of base tube 1 filters seam A, and often group filtration seam comprises multiple seam bar a, such as, can offer 3 groups and filter seam A on base tube 1,4 groups can also be offered and filter seam A, in the present embodiment, the length of the multiple seam bar a often comprised in group filtration seam A specifically decides according to the length of base tube 1, is not added on restriction in the present embodiment.
The sand control screen that the present embodiment provides, seam A is filtered by the 2-4 group of axially offering at base tube 1, often group filtration seam comprises multiple seam bar, described multiple seam bar is evenly arranged along the radial direction of described base tube, sand grains in payzone can be blocked in outside sand control screen by seam bar, play sand control effect, and base tube is the tubular body adopting aluminium alloys to make, like this when sand control screen blocking or when needing after burying to salvage, base tube due to this sand control screen is the base tube adopting aluminium alloys to make, therefore this sand control screen easily bores, by boring grinder tool, sand control screen can be drilled to multiple fragment like this, and aluminium alloys density is lower, the multiple fragments be drilled to so are easily taken out of at well liquid circulation time, achieve the salvage of sand control screen, thus solve existing sand control screen after blocking or burying in well because salvaging out the economic loss problem causing mining progress delay and oil well to scrap, simultaneously, make sand control screen can carry out sand control to the payzone of different depth at the 2-4 group filtration seam A that axially offers of base tube 1, improve sand controlling result.
Further, on the basis of above-described embodiment, in the present embodiment, when base tube 1 being offered at least one group and filtering seam A, often group filtration seam A can comprise 16-24 bar seam bar a, for example, often group is filtered in seam A and can be comprised 16 seam bars, or 20 stitch bar, it should be noted that, when often organizing, the seam number comprised in filtration seam A is more, interval between the seam bar a of then base tube 1 radial direction is less, on the contrary, then larger, wherein, interval between the seam bar a of the setting in base tube 1 radial direction more hour, the compressive strength of base tube 1 can correspondingly decrease, therefore, in the present embodiment, 16-24 bar seam bar a is comprised by often organizing filtration seam A, can ensure that base tube 1 still has certain intensity, base tube 1 is avoided to be damaged by strata pressure, in the present embodiment, the quantity of the seam bar a often comprised in group filtration seam A is specifically chosen according to practice.In the present embodiment, by often organize filter seam comprise 16-24 bar seam bar, 16-24 bar seam bar seam bar is evenly arranged along the radial direction of base tube, sand grains in payzone can be blocked in outside sand control screen by seam bar, play sand control effect, and base tube is the tubular body adopting aluminium alloys to make, like this when sand control screen blocking or when needing after burying to salvage, base tube due to this sand control screen is the base tube adopting aluminium alloys to make, therefore this sand control screen easily bores, by boring grinder tool, sand control screen can be drilled to multiple fragment like this, and aluminium alloys density is lower, the multiple fragments be drilled to so are easily taken out of at well liquid circulation time, achieve the salvage of sand control screen, thus solve existing sand control screen after blocking or burying in well because salvaging out the economic loss problem causing mining progress delay and oil well to scrap, the all directions of sand control screen to same degree of depth payzone can also be made to carry out sand control by evenly being arranged along the radial direction of base tube by 16-24 bar seam bar simultaneously, and then improve sand control efficiency.
Further, on the basis of above-described embodiment, in the present embodiment, one end of base tube 1 is threaded with between connector 2, namely external screw thread (see Fig. 3) is provided with in one end of base tube 1, the internal thread matched with the external screw thread of base tube 1 is provided with in one end of connector 2, be fixed as one threadably between base tube 1 and connector 2, in the present embodiment, the other end of connector 2 needs to be connected with sleeve pipe or oil pipe, therefore, the other end of connector 2 also can be connected with sleeve pipe or oil pipe threadably, in the present embodiment, when being threaded connection between one end of base tube 1 and connector 2, dismountable between base tube 1 and connector 2, be easy for installation and removal like this.
Fig. 3 is the partial cutaway schematic view of the utility model sand control screen, further, on the basis of above-described embodiment, in the present embodiment, as shown in Figure 3, connector 2 is box cupling 2 ', one end of box cupling 2 ' is provided with the internal thread that the external screw thread c that arranges with base tube 1 periphery matches, the other end of box cupling is provided with cannula carrier screw thread b, in the present embodiment, between box cupling 2 ' with base tube 1, engagement thread is connected, base tube 1 is connected with sleeve pipe or oil pipe by the cannula carrier screw thread b of box cupling 2 ', in the present embodiment, the cannula carrier screw thread b of box cupling 2 ' can be tapered thread, it can also be flat pattern screw thread, namely box cupling 2 ' can be connected in tapered thread mode with sleeve pipe or oil pipe, can also connect with pitch flat pattern engagement thread, the feature that single taper thread connected pipes or sleeve external thread Root Stress are concentrated can be alleviated like this, not easily produce fracture tired out, connect better effects if, effectively prevent oil well pipe break-off accident from occurring, in the present embodiment, it should be noted that, when box cupling 2 ' is connected with sleeve pipe, this box cupling 2 ' can choose casing coupling, when box cupling 2 ' is connected with oil pipe, this box cupling 2 ' can choose tubing coupling, corresponding box cupling is chosen when being specifically connected to oil pipe or sleeve pipe according to sand control screen in practical application.
Fig. 4 is the another structural representation of the utility model sand control screen, Fig. 5 is the generalized section in B-B direction in Fig. 4, further, on the basis of above-described embodiment, in the present embodiment, as illustrated in figures 4-5, base tube 1 is provided with sleeve pipe male thread d away from the other end periphery of connector 2, like this, base tube 1 obtains other instruments by sleeve pipe male thread d with down-hole and is connected threadably, facilitates the installation and removal of sand control screen and other instruments of down-hole.
Further, on the basis of above-described embodiment, in the present embodiment, because base tube 1 adopts aluminium alloys to make, in order to ensure that base tube 1 has certain compressive strength, sand control screen is avoided to be damaged by strata pressure, simultaneously again in order to ensure easy drilled mill, in the present embodiment, the thickness of base tube 1 is 5-9mm, namely the difference of base tube external diameter and internal diameter is 5-9mm, and the degree of depth of namely stitching bar a is 5-9mm, in the present embodiment, for example, the thickness of base tube 1 can be 5mm, also can be 7mm, can also be 8mm.
In the present embodiment, be set to 5-9mm by the thickness of the base tube 1 made by aluminium alloys, ensure that sand control screen has certain compressive strength, avoid sand control screen to be damaged by strata pressure, simultaneously sand control screen also easy drilled mill in this thickness range.
Further, on the basis of above-described embodiment, in the present embodiment, when base tube 1 being offered multiple seam bar a, correspondingly can reduce the intensity of sand control screen, in the present embodiment, in order to ensure the intensity of sand control screen while offer multiple seam bar a on base tube 1, in the present embodiment, the length of seam bar a is located between 40-80mm, and such as, the length of seam bar a can be 50mm, also can be 60mm, can also be 70mm.
In the present embodiment, by the length of seam bar a is located between 40-80mm, can ensures that sand control screen has certain intensity, avoid sand control screen to be damaged by strata pressure.
Further, on the basis of above-described embodiment, in the present embodiment, the width of seam bar a is 0.1mm-1mm, it should be noted that, because the width of seam bar a on base tube 1 external surface can be equal with the width of seam bar a on base tube 1 inner surface, namely the cross section stitching bar a is rectangle (as shown in Figure 5), simultaneously, the width of seam bar a on base tube 1 external surface can be greater than the width of seam bar a on base tube 1 inner surface, namely the cross section stitching bar a is trapezoidal seam bar a, and in the present embodiment, the width on the external surface of base tube 1 that the width stitching bar a refers to, in the present embodiment, the width of seam bar a can be 0.2mm, also can be 0.5mm, can also be 0.8mm, in the present embodiment, the seam bar a that base tube 1 is offered is formed by the laser system of cutting.
In the present embodiment, by being located at as between 0.1mm-1mm by the width of seam bar a, seam bar a has the effect blocking formation particle on the one hand, plays the effect of sand control sand block, can prevent the sandy mobile supporting stratum on the other hand, avoid formation collapse.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (9)
1. a sand control screen, is characterized in that, comprising:
Base tube, is arranged on the connector of described base tube one end, wherein,
At least one group of filtration of axially offering of described base tube is stitched, and often group filtration seam comprises multiple seam bar, and described multiple seam bar is evenly arranged along the radial direction of described base tube, and described base tube is the tubular body adopting aluminium alloys to make.
2. sand control screen according to claim 1, is characterized in that, the described filtration of 2-4 group of axially offering of described base tube is stitched.
3. sand control screen according to claim 1 and 2, is characterized in that, described often group is filtered seam and comprised described in 16-24 bar and stitch bar.
4. sand control screen according to claim 1, is characterized in that, one end of described base tube is threaded with described connector.
5. the sand control screen according to claim 1 or 4, is characterized in that, described connector is box cupling, and one end of described box cupling is provided with the internal thread that the external screw thread that arranges with described base tube periphery matches, and the other end of described box cupling is provided with cannula carrier screw thread.
6. the sand control screen according to claim 1 or 4, is characterized in that, described base tube is provided with sleeve pipe male thread away from the other end periphery of described connector.
7. sand control screen according to claim 1, is characterized in that, the thickness of described base tube is 5-9mm.
8. sand control screen according to claim 1, is characterized in that, the length of described seam bar is 40-80mm.
9. sand control screen according to claim 1, is characterized in that, the width of described seam bar is 0.1mm-1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382401.8U CN204804790U (en) | 2015-06-04 | 2015-06-04 | Sand -prevention screening tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520382401.8U CN204804790U (en) | 2015-06-04 | 2015-06-04 | Sand -prevention screening tube |
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| Publication Number | Publication Date |
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| CN204804790U true CN204804790U (en) | 2015-11-25 |
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| CN201520382401.8U Active CN204804790U (en) | 2015-06-04 | 2015-06-04 | Sand -prevention screening tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285573A (en) * | 2015-06-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Sand control screen |
| CN106639991A (en) * | 2016-11-28 | 2017-05-10 | 中国石油天然气股份有限公司 | Sand control screen and manufacturing method thereof |
-
2015
- 2015-06-04 CN CN201520382401.8U patent/CN204804790U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285573A (en) * | 2015-06-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Sand control screen |
| CN106639991A (en) * | 2016-11-28 | 2017-05-10 | 中国石油天然气股份有限公司 | Sand control screen and manufacturing method thereof |
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