SAND SCREEN
A sand screen including a base pipe. A plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a tubular filtration media about the base pipe. End rings engaging the filtration media and the base pipe.
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In the drilling and completion industry, the formation of boreholes for the purpose of recovering hydrocarbons necessarily is accompanied by sand. Sand control therefore is a significant concern for operators and must be addressed in the downhole environment prior to its production with target fluids. This is because flowing sand is damaging to production equipment from the standpoint of erosion and further because it can adversely affect other equipment such as pumps, etc. Also notable is that the production of sand from the formation in which a borehole exists will tend to enlarge the borehole and increase the probability of cave ins, wash outs, etc., that would require remedial activity at not insignificant cost both in actual dollars and in lost production time.
The art is therefore very concerned with sand control and has developed a plethora of types of sand screen and such to mitigate the problem. In view of ever changing conditions and techniques however, the art is always in need of and receptive to alternative arrangements.
BRIEF DESCRIPTIONA sand screen includes a base pipe; a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a tubular filtration media about the base pipe; end rings engaging the filtration media and the base pipe.
A building component for a sand screen including a segment; a plurality of merlons and a plurality of crenels at one longitudinal end of the segment; a plurality of merlons and a plurality of crenels at an opposite longitudinal end of the segment, the merlons being configured and dimensioned to be received in a crenel of a mating segment such that adjacent side surfaces of each mated merlon will form a passageway therebetween.
A sand screen cartridge includes a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a tubular filtration media; end rings engaging the filtration media and the base pipe; and a shroud spanning the filtration media and affixed to the end rings.
A sand screen including a base pipe; a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a first tubular filtration media about the base pipe; another plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a second tubular filtration media about the base pipe stacked adjacent the first tubular filtration media; end rings engaging the first and second filtration media and the base pipe; and a shroud spanning the first and second filtration medias.
The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
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The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. Further, it should further be noted that the terms “first,” “second,” and the like herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The modifier “about” used in connection with a quantity is inclusive of the stated value and has the meaning dictated by the context (e.g., it includes the degree of error associated with measurement of the particular quantity).
The teachings of the present disclosure may be used in a variety of well operations. These operations may involve using one or more treatment agents to treat a formation, the fluids resident in a formation, a wellbore, and/or equipment in the wellbore, such as production tubing. The treatment agents may be in the form of liquids, gases, solids, semi-solids, and mixtures thereof. Illustrative treatment agents include, but are not limited to, fracturing fluids, acids, steam, water, brine, anti-corrosion agents, cement, permeability modifiers, drilling muds, emulsifiers, demulsifiers, tracers, flow improvers etc. Illustrative well operations include, but are not limited to, hydraulic fracturing, stimulation, tracer injection, cleaning, acidizing, steam injection, water flooding, cementing, etc.
While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited.
Claims
1. A sand screen comprising:
- a base pipe;
- a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a tubular filtration media about the base pipe;
- end rings engaging the filtration media and the base pipe.
2. A sand screen as claimed in claim 1 wherein the plurality of segments include offsets to space certain faces of the plurality of elements from mating faces of the plurality of elements to create radial fluid passageways through the filtration media.
3. A sand screen as claimed in claim 1 wherein the plurality of segments further include standoffs to space the segments from the base pipe.
3. A sand screen as claimed in claim 1 wherein the plurality of segments are rings.
4. A sand screen as claimed in claim 3 wherein the rings are castellated by merlons and crenels.
5. A sand screen as claimed in claim 4 wherein the merlons include side surfaces that are angled at about 1 degree less than an angle represented by a radial line from an axis of the rings.
6. A sand screen as claimed in claim 5 wherein the side surfaces are angled to so that mating side surfaces of adjacent merlons are parallel therewith.
7. A sand screen as claimed in claim 4 wherein the merlons include side surfaces that when nested with mating side surfaces of adjacent merlons produce one of narrowing pathways from an outer surface of the filtration media to an inner surface of the filtration media or widening pathways from an outer surface of the filtration media to an inner surface of the filtration media.
8. A sand screen as claimed in claim 4 wherein each merlon includes a side surface at an angle to a line parallel to an axis of the ring of about 0.5 to about 15 degrees.
9. A sand screen as claimed in claim 8 wherein an opposite side surface of the merlon has a mirror imaged angle.
10. A sand screen as claimed in claim 4 further comprising a sealing material disposed upon a crown of each merlon.
11. A sand screen as claimed in claim 10 wherein the sealing material creates a seal between the crown of each merlon and a base of each crenel of a mating ring.
12. A sand screen as claimed in claim 11 wherein the sealing material is a polymer.
13. A sand screen as claimed in claim 1 wherein the plurality of hard segments comprise a highly erosion resistant material.
14. A sand screen as claimed in claim 13 wherein the material comprises ceramic.
15. A sand screen as claimed in claim 14 wherein the ceramic comprises Sintered Boron Carbide and/or Silicon Carbide.
16. A building component for a sand screen comprising:
- a segment;
- a plurality of merlons and a plurality of crenels at one longitudinal end of the segment;
- a plurality of merlons and a plurality of crenels at an opposite longitudinal end of the segment, the merlons being configured and dimensioned to be received in a crenel of a mating segment such that adjacent side surfaces of each mated merlon will form a passageway therebetween.
17. A building component for a sand screen as claimed in claim 16 wherein the segment is annular.
18. A building component for a sand screen as claimed in claim 16 wherein the segment includes a keying feature to ensure adjacent segments when stacked to form a filtration media are registered.
19. A sand screen cartridge comprising:
- a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a tubular filtration media;
- end rings engaging the filtration media and the base pipe; and
- a shroud spanning the filtration media and affixed to the end rings.
20. A sand screen comprising:
- a base pipe;
- a plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a first tubular filtration media about the base pipe;
- another plurality of individual segments having complementary perimetrically interlocking shapes configured to be nested together so as to limit relative movement among the elements and to form a second tubular filtration media about the base pipe stacked adjacent the first tubular filtration media;
- end rings engaging the first and second filtration media and the base pipe; and
- a shroud spanning the first and second filtration medias.
Type: Application
Filed: Aug 17, 2015
Publication Date: Feb 23, 2017
Applicant: BAKER HUGHES INCORPORATED (Houston, TX)
Inventors: Randall Guest (Spring, TX), Chance Ethan Mann (Magnolia, TX), Bennett Richard (Kingwood, TX)
Application Number: 14/828,457