CN102418502A - High-strength micro circumferential seam composite sand filtering pipe and method - Google Patents
High-strength micro circumferential seam composite sand filtering pipe and method Download PDFInfo
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- CN102418502A CN102418502A CN2011103726219A CN201110372621A CN102418502A CN 102418502 A CN102418502 A CN 102418502A CN 2011103726219 A CN2011103726219 A CN 2011103726219A CN 201110372621 A CN201110372621 A CN 201110372621A CN 102418502 A CN102418502 A CN 102418502A
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Abstract
The invention relates to a high-strength micro circumferential seam composite sand filtering pipe and a high-strength micro circumferential seam composite sand filtering method. In the technical scheme, the pipe comprises a basic pipe, wherein a plurality of round holes are drilled in the basic pipe in an auger drilling mode; the excircle of the basic pipe is formed by sleeving a plurality of spacing rings; annular trapezoidal seams with narrow outer parts and wide inner parts can be formed among the spacing rings; and a plurality of oil flow channels are uniformly formed between the spacing rings and the basic pipe. The pipe has the advantages that: the plurality of spacing rings are arranged on the excircle of the basic pipe, a plurality of trapezoidal seams are formed on the excircle of the basic pipe, equal oil flow channels are formed between the spacing rings and the basic pipe, and the spacing rings have certain thickness and width, so the pipe has the characteristics of high corrosion resistance, high strength, good sand prevention and anti-blocking effects, greatly prolonged service life and the like.
Description
Technical field:
The present invention relates to a kind of oil drilling completion tool, compound sand screen of the little circumferential weld of particularly a kind of high strength and method.
Background technology:
In oil field development, in the completion mode of being taked to loose rock oil reservoir exploitation, adopt bore hole sandpipe completion more; Be directed to shale rock dust fine sand especially in the grains of sand footpath use slot sandpipe completion at present mostly on stratum greater than 0.2mm, this screen casing is to adopt laser or alternate manner to cut out on the parent tube surface not have several seams; Therefore parent tube compressive strength is diametrically reduced greatly, in use, receiving under the pressure of the borehole wall; Be easy to the parent tube flattening deformation is caused the filter sand performance failure, cause sand plug for a long time, the serious sand that causes buries; Cause serious consequence to the later stage oil recovery, output is reduced greatly, bring heavy losses for the production in oil field; Existing wire-wrapped screen be with stainless steel wire be wrapped in some equal five equilibriums vertical distribution with equal silk footpath be on the basic circle of supports silk with thread between put and be welded on the longitudinal bracing; The problem of its existence is that intensity is low; Life-span is short, and filtering accuracy is difficult to guarantee, and shortcoming such as sleave easily in use.
Summary of the invention:
The object of the invention is exactly the above-mentioned defective that exists to prior art, and compound sand screen of the little circumferential weld of a kind of high strength and method are provided, and it is good, anti-stifled and sand controlling result is good, the characteristics of long service life to have a high antiseptic property, intensity.
The compound sand screen of the little circumferential weld of a kind of high strength comprises parent tube; Be drilled with some circular holes on the parent tube; Form by some spacer ring suits on the parent tube cylindrical, can form the trapezoidal seam of the outer narrow inner width of annular between spacer ring and the spacer ring, between spacer ring and parent tube, evenly form some oil flow channels.
Be drilled with some circular holes successively according to the hand of spiral on the above-mentioned parent tube, make on each cross section of parent tube and be no more than two circular holes.
Above-mentioned spacer ring has adopted stainless steel to process, and forms the trapezoidal seam of 0.1-0.6mm between spacer ring and the spacer ring.
The compound filter sand method of the little circumferential weld of a kind of high strength, realize filter sand by following steps:
(a), on the parent tube of sand screen, adopt the auger boring mode to punch, each cross section on the parent tube is no more than two circular holes;
(b), on the cylindrical of parent tube, form with the spacer ring suit; Form the trapezoidal seam of the small outer narrow inner width of annular between spacer ring and the spacer ring; Form some well-regulated longitudinal oil circulation roads in the spacer ring between circle and parent tube cylindrical, make the liquid after being filtered have enough spaces to flow.
Above-mentioned spacer ring, its inner chamber is formed by groove and combination of protrusions, and convexity contacts with the cylindrical of parent tube.
The invention has the beneficial effects as follows: be assembled on the parent tube cylindrical by some spacer rings; On the spacer ring cylindrical, form some trapezoidal seams; Between spacer ring and parent tube, form impartial oil flow channel; Because spacer ring has certain thickness and width, make therefore that it has that very strong antiseptic power, intensity are high, anti-stifled effective, the characteristics such as prolong application life greatly of sand control.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is sectional drawings of the present invention;
Accompanying drawing 3 is sketch mapes of the trapezoidal seam that forms between spacer ring of the present invention and the spacer ring;
Among the last figure: parent tube 1, spacer ring 2, oil flow channel 3, trapezoidal seam 4, circular hole 5, groove 6, protruding 7.
The specific embodiment:
In conjunction with accompanying drawing 1-3, the present invention is done further description:
The present invention includes parent tube 1, adopt the auger boring mode to be drilled with some circular holes 5 on the parent tube 1, with reference to accompanying drawing 1, circular hole 5 is arranged along the hand of spiral on parent tube.Form by some spacer ring 2 suits on the parent tube cylindrical, can form the trapezoidal seam 4 of the outer narrow inner width of annular between spacer ring 2 and the spacer ring 2, between spacer ring 2 and parent tube 1, evenly form some oil flow channels 3.
Wherein, each cross section on the parent tube 1 is no more than two circular holes, and above-mentioned spacer ring 2 has adopted stainless steel to process, and forms the trapezoidal seam 4 of 0.1-0.6mm between spacer ring 2 and the spacer ring 2.
Wherein, the inner chamber of spacer ring is combined with protruding 7 by groove 6, and protruding 7 contact with the cylindrical of parent tube 1.
Filter sand method of the present invention may further comprise the steps: a, parent tube adopt the auger boring mode to be drilled with some circular holes 5, and each cross section on the parent tube 1 is no more than two circular holes; Spacer ring suit with precision stainless steel processing on b, the parent tube cylindrical forms, form the trapezoidal seam of the small outer narrow inner width of annular between spacer ring and the spacer ring, thereby has substituted directly the compressive strength that on parent tube slot has strengthened parent tube.Form some well-regulated longitudinal oil circulation roads between circle and parent tube cylindrical in the spacer ring simultaneously, make the liquid after being filtered have enough spaces to flow, thereby be difficult for stopping up.Spacer ring has good corrosion resistance in addition, and it is assembled in and makes the small circumferential weld that the screen casing bulk strength improves, encircles and ring forms that the filtering accuracy characteristic of accurate is arranged on the parent tube.Therefore has outstanding advantage in use.
And existing wire-wrapped screen be with stainless steel wire be wrapped in some equal five equilibriums vertical distribution with equal silk footpath be on the basic circle of supports silk with thread between put and be welded on the longitudinal bracing; Its intensity is low, and filtering accuracy is difficult to guarantee and shortcoming such as sleave easily in use, and the present invention has overcome above-mentioned shortcoming; And the present invention is assembled on the parent tube cylindrical by some spacer rings; On the spacer ring cylindrical, form some trapezoidal seams, have better effect, between spacer ring and parent tube, form impartial oil flow channel; Because spacer ring has certain thickness and width, make therefore that it has that very strong antiseptic power, intensity are high, anti-stifled effective, the characteristics such as prolong application life greatly of sand control.
Claims (5)
1. compound sand screen of the little circumferential weld of high strength; It is characterized in that: comprise parent tube (1); Be drilled with some circular holes (5) on the parent tube (1); Form by some spacer rings (2) suit on the parent tube cylindrical, can form the trapezoidal seam (4) of the outer narrow inner width of annular between spacer ring (2) and the spacer ring (2), between spacer ring (2) and parent tube (1), evenly form some oil flow channels (3).
2. the compound sand screen of the little circumferential weld of high strength according to claim 1 is characterized in that: described parent tube (1) is gone up and to be drilled with some circular holes (5) successively according to the hand of spiral, makes on each cross section of parent tube and is no more than two circular holes (5).
3. the compound sand screen of the little circumferential weld of high strength according to claim 1 is characterized in that: described spacer ring (2) has adopted stainless steel to process, and forms the trapezoidal seam (4) of 0.1-0.6mm between spacer ring (2) and the spacer ring (2).
4. compound filter sand method of the little circumferential weld of high strength is characterized in that realizing filter sand by following steps:
(a), on the parent tube of sand screen, adopt the auger boring mode to punch, each cross section on the parent tube (1) is no more than two circular holes;
(b), on the cylindrical of parent tube, form with the spacer ring suit; Form the trapezoidal seam of the small outer narrow inner width of annular between spacer ring and the spacer ring; Form some well-regulated longitudinal oil circulation roads in the spacer ring between circle and parent tube cylindrical, make the liquid after being filtered have enough spaces to flow.
5. the compound filter sand method of the little circumferential weld of high strength according to claim 4 is characterized in that: the inner chamber of spacer ring is combined by groove (6) and protruding (7), and protruding (7) contact with the cylindrical of parent tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103726219A CN102418502A (en) | 2011-11-22 | 2011-11-22 | High-strength micro circumferential seam composite sand filtering pipe and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103726219A CN102418502A (en) | 2011-11-22 | 2011-11-22 | High-strength micro circumferential seam composite sand filtering pipe and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102418502A true CN102418502A (en) | 2012-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103726219A Pending CN102418502A (en) | 2011-11-22 | 2011-11-22 | High-strength micro circumferential seam composite sand filtering pipe and method |
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| CN (1) | CN102418502A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200985780Y (en) * | 2006-12-12 | 2007-12-05 | 中国石油天然气股份有限公司 | Combined precision seam tube |
| CN200992998Y (en) * | 2006-11-14 | 2007-12-19 | 北京通盛威尔工程技术有限公司 | Well completion sand-proof screen pipe with graded filtering performance |
| US20080217002A1 (en) * | 2007-03-07 | 2008-09-11 | Floyd Randolph Simonds | Sand control screen having a micro-perforated filtration layer |
| CN201401159Y (en) * | 2009-04-28 | 2010-02-10 | 北京递推科技有限公司 | V-shaped groove laminated sand control tube |
| US20110180257A1 (en) * | 2010-01-22 | 2011-07-28 | Schlumberger Technology Corporation | System and method for filtering sand in a wellbore |
| CN202348242U (en) * | 2011-11-22 | 2012-07-25 | 胜利油田康贝石油工程装备有限公司 | High-strength micro-circular seam composite sand filtering pipe |
-
2011
- 2011-11-22 CN CN2011103726219A patent/CN102418502A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200992998Y (en) * | 2006-11-14 | 2007-12-19 | 北京通盛威尔工程技术有限公司 | Well completion sand-proof screen pipe with graded filtering performance |
| CN200985780Y (en) * | 2006-12-12 | 2007-12-05 | 中国石油天然气股份有限公司 | Combined precision seam tube |
| US20080217002A1 (en) * | 2007-03-07 | 2008-09-11 | Floyd Randolph Simonds | Sand control screen having a micro-perforated filtration layer |
| CN201401159Y (en) * | 2009-04-28 | 2010-02-10 | 北京递推科技有限公司 | V-shaped groove laminated sand control tube |
| US20110180257A1 (en) * | 2010-01-22 | 2011-07-28 | Schlumberger Technology Corporation | System and method for filtering sand in a wellbore |
| CN202348242U (en) * | 2011-11-22 | 2012-07-25 | 胜利油田康贝石油工程装备有限公司 | High-strength micro-circular seam composite sand filtering pipe |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |