AU2001278984A1 - Fracturing different levels within a completion interval of a well - Google Patents
Fracturing different levels within a completion interval of a wellInfo
- Publication number
- AU2001278984A1 AU2001278984A1 AU2001278984A AU2001278984A AU2001278984A1 AU 2001278984 A1 AU2001278984 A1 AU 2001278984A1 AU 2001278984 A AU2001278984 A AU 2001278984A AU 2001278984 A AU2001278984 A AU 2001278984A AU 2001278984 A1 AU2001278984 A1 AU 2001278984A1
- Authority
- AU
- Australia
- Prior art keywords
- fracturing
- base pipe
- annulus
- completion interval
- completion
- 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.)
- Granted
Links
Description
FRACTURING DIFFERENT LEVELS WITHIN A COMPLETION INTERNAL OF A WELL
BACKGROUND
The present invention relates to completing a subterranean formation and in one of its aspects relates to a method and apparatus for fracturing different levels of a completion interval of a subterranean formation(s) in a single operation.
In completing wells used in the production of hydrocarbons or the like, it is common to "hydraulically fracture" at least some interval of the production/injection formations) in order to improve flow of fluids into and/or out of the formation. As is well understood in the art, hydraulic fracturing is typically carried out by lowering a workstring into the well and isolating that portion of the wellbore which lies adjacent the interval to be fractured by setting packers or the like. Fracturing fluid or slurry (e.g., a heavy gel with or without props) is then pumped down the workstring and into the isolated interval at a pressure sufficient to separate or "fracture" the formation, thereby forming permeable channels within the formation.
In thin or relatively short intervals that are fairly homogeneous, standard fracturing techniques such as described above will normally produce a fracture or fractures throughout the length of the completion interval. However, these standard fracturing techniques experience problems when used in fracturing long or thick intervals or in intervals which are heterogeneous (i.e., made of several levels or zones which fracture under different pressures). For example, it is difficult, if possible at all, to fracture a second zone in such intervals once a first zone has started to fracture. The fracturing slurry will continue to flow into and enlarge the initial fracture as the pressure increases in the isolated portion of the wellbore rather than initiate additional fractures in the other zones or levels of the fracture interval.
Further, liquid from the fracturing slurry is typically "lost" into the formation through the initial fracture causing props, e.g., sand, to settle out of the slurry thereby forming a bridge or blockage within the wellbore adjacent the initial fracture. Such blockages prevent further flow of slurry to other zones in the fracture interval even if
such zones had already experienced some initial breakdown, i.e., fracturing. This results in poor distribution of fractures throughout the fracture interval since often only the zone having the lowest breakdown pressure will be adequately fractured and propped.
Due to these problems, it is common to fracture a long and/or heterogeneous interval by carrying out a series of individual, conventional fracturing operations such as described above. That is, a first zone is fractured, then the workstring is repositioned in the wellbore and a second zone is fractured, and so on until the entire interval has been fractured. Of course, as will be recognized by those skilled in this art, this repetition is both expensive and time consuming and can significantly affect the overall economics of the well being completed.
To overcome the problems in fracturing long and/or heterogeneous intervals, several methods have been proposed wherein the fracturing of such intervals can be carried out with a single setting of a workstring wherein the fracturing slurry is delivered simultaneously to the different levels or zones within the interval through alternate flowpaths; for example, U.S. Patent 5,161,618 to Jones et al. Another such method is disclosed in U.S. Patent 5,435,391, issued My 25, 1995, wherein alternating slugs of a gel and a proppant slurry are pumped down a single workstring and through alternate flowpaths to fracture and prop different levels within the fracture interval.
Still another such method is that disclosed in U.S. Patent 5,417,284, issued May 23, 1995, wherein a fracturing gel is pumped down a workstring and into one end of the isolated wellbore while a proppant slurry is pumped at the same time through the well annulus and into the other end of the isolated annulus to carry out the fracturing of the different levels within the isolated interval. If a blockage occurs, the fracturing gel and/or slurry continues to be delivered throughout the fracture interval through alternate flowpaths to complete the fracturing of the interval.
A similar method is disclosed in U.S. Patent 5,560,427 except a slurry splitter is positioned downhole in the workstring wherein a portion of the gel is separated from the fracturing slurry and is flowed into the bottom of the isolated interval to initiate fracturing within the interval. The remainder of the slurry is flowed into the upper end of the isolated interval to prop the fractures as they are being formed. Alternate
flowpaths are provided to insure that the gel and/or slurry will be delivered to the different levels within the interval should a blockage occur in the well annulus before the fracturing operation is complete.
SUMMARY OF THE INVENTION
The present invention provides a method and apparatus for fracturing different levels of a completion interval of a subterranean formation which is traversed by a wellbore of a well. Basically, a workstring comprised of a tubing having a cross-over and a fracturing string is lowered into the wellbore until the fracturing string is positioned adjacent the completion interval to be fractured. The fracturing string is comprised of a base pipe which is essentially blank over most of its length (i.e., impermeable) except for a plurality of perforated sections which are spaced along its length. Each perforated section is formed by a plurality of openings (e.g., round holes, slots, etc.) through the wall of the base pipe which are spaced around and throughout the length of the perforated section. The lengths of the respective perforated sections may vary (e.g., from about 1 to about 300 feet) with the perforated sections being spaced from each other along the base pipe at varying distances (e.g., from about 10 to about 1000 feet). In fracturing formations where little or no substantial particulate material, e.g., sand, will be produced with the formation fluids, the openings in the perforated sections may be merely un-screened openings through the base pipe, similar to the slots in a conventional "slotted liner". In formations where substantial sand will be produced, a screen means, e.g., wire wrap, is positioned over the openings at each perforated section to allow fluid to flow into the base pipe through the openings while preventing any substantial sand from flowing therethrough. At least one alternate flow path (e.g., shunt tubes) having an inlet and one or more spaced outlets, is provided on the fracturing string and extends longitudinally along the length of the base pipe. The wire wrap can be wrapped over the shunt tubes at each perforated section or the shunt tubes can be bent to pass over the wire wrap after the wire is in place on the base pipe. Where the shunt
tubes are outside the wire wrap, a perforated sleeve or shroud can be positioned over the shunts at each perforated section to protect the shunt tubes during installation.
To carry out the fracturing method of the present invention, the workstring is positioned within the wellbore so that the fracturing string will extend substantially through said completion interval and will form a "completion interval annulus" with the wellbore which, in turn, is isolated from the well annulus above. A fracturing slurry, comprised of a fracturing liquid (e.g., high-viscosity gel) and proppants (e.g., sand), is flowed down the tubing string and out through the cross-over into the top of the completion interval annulus. As is common in routine fracture operations, a pad of fracturing fluid without proppant can be pumped into the completion interval annulus before the slurry to initiate the fracturing of the formation, if desired.
As will be understood in the art, when returns are taken through the well annulus, liquid from the fracturing slurry is lost both into the formation(s) within said completion interval and into said base pipe through the openings in the perforated sections along the base pipe. This causes the proppants (sand) from the slurry to "sand-out" within the completion interval annulus at the perforated sections to form sand bridges which, in turn, block further flow of slurry down through the completion interval annulus.
These sand bridges or blockages effectively act as packers which isolate portions of the completion annulus which lie between respective adjacent, perforated sections. The pumping of the slurry into the top of the completion interval annulus is continued but now it can only flow downward therein through the alternate flowpaths, i.e., shunts tubes. The slurry enters the tops of the tubes and flows downward to exit through the spaced outlets at different levels within the completion interval annulus; that is, the slurry exits into the isolated portions of the completion interval annulus. Continued pumping of the slurry will cause the pressure to build up within these isolated sections until the different levels within the completion interval are fractured and propped with the proppant. If any level of the completion interval is not to be fractured, no outlets are provided in the shunt tubes at this level; accordingly, no fracturing slurry can exit into
the isolated portion of the completion interval annulus which lies adjacent the level which is not to be fractured.
Where returns are not to be taken through the well annulus, the flow of fluid into or through the base pipe is blocked since the base pipe and well annulus are filled with a non-compressible, completion fluid. Therefore, no substantial amount of liquid from the fracturing slurry will be initially lost through any of the perforated sections but will only be lost into the formation. Eventually, the formation will fracture at some level within the completion interval. Once this initial fracture is formed, liquid can now flow not only into the fracture but also into the base pipe through some of the perforated sections and back out into the completion interval annulus through the perforated section nearest the initial fracture.
This causes sand bridges to form at the perforated sections where liquid is being lost from the slurry. These sand bridges form "packers" which, in turn, isolate the portions of the completion interval annulus which lie therebetween. Slurry now can only flow through the alternate flow paths which deliver the slurry into the isolated portions of the completion interval annulus to finish the fracturing operation.
Once the completion interval has been fractured and propped, flow of slurry is ceased and the well is put on production. The fluids from the completion interval flow into the completion interval annulus and due to the difference in the viscosity of the slurry liquid (e.g., about 100 centipoises) and the produced fluids (e.g., about 1 centipoise), the produced fluids can readily flow through the sand bridges and into the base pipe through the openings in the perforated sections of the base pipe. Where a substantial amount of sand is produced with the formation fluids, the opemngs in the perforated section will be equipped with a screen means (e.g., wire wrap) which allows the produced fluids to pass therethrough while blocking any substantial flow of particulates.
BRIEF DESCRIPTION OF THE DRAWINGS
The actual construction, operation, and the apparent advantages of the present invention will be better understood by referring to the drawings, not necessarily to scale, in which like numerals identify like parts and in which:
FIG. 1 is an elevational view, partly in section, of a portion of a wellbore having a fracturing string of the present invention in an operable position adjacent a completion interval to be fractured;
FIG. 2 is an enlarged, elevational view, partly in section, of a portion of the fracturing string of FIG. 1 ;
FIG. 3 is a sectional view taken through the line 3-3 of FIG. 2;
FIG. 4 is an elevational view, partly in section, of a further embodiment of the fracturing string of the present invention;
FIG. 5 is a partial elevational view of still another embodiment of the fracturing string of the present invention; and
FIG. 6 is an elevational view, partly in section, of a portion of a wellbore having another embodiment of a fracturing string of the present invention in an operable position adjacent a completion interval to be fractured.
While the invention will be described in connection with its preferred embodiments, it will be understood that this invention is not limited thereto. On the contrary, the invention is intended to cover all alternatives, modifications, and equivalents which may be included within the spirit and scope of the invention, as defined by the appended claims.
DET ILED DESCRIPTION OF THE INVENTION
Referring more particularly to the drawings, FIG. 1 illustrates a portion of the wellbore 11 of a producing and/or injection well 10. Wellbore 11 extends from the surface (not shown) through a long completion interval 12 (i.e., production/injection interval). Well 10 is illustrated as having a vertical, "open hole" wellbore but it should
be recognized by those skilled in the art that the present invention is equally applicable for use (a) in cased wells which are perforated adjacent the zones to be fractured as well as (b) in inclined and/or horizontal wellbores. Since the present invention is applicable for use in horizontal and inclined wellbores as well as vertical wellbores, the terms "upper and lower", "top and bottom", as used herein are relative terms and are intended to apply to the respective positions within a particular wellbore while the term "levels" or "zones" is meant to refer to respective positions lying along the wellbore between the terminals of the completion interval 12.
As illustrated, completion interval 12 is a formation(s) having a substantial length or thickness which extends along wellbore 11 and which is made up of a plurality
(three shown) different levels or zones 13 A, 13B, and 13C which, in turn, may be heterogeneous (i.e., each zone breaks down under a different fracturing pressures). A workstring 14 is positioned in wellbore 11 and extends from the surface (not shown) and substantially through completion interval 12. As illustrated, workstring 14 includes a fracturing string 15 which is connected through a conventional "crossover" 16 onto the lower end of tubing string 17 and which is positioned adjacent the completion interval 12 when in its operable position.
Fracturing string 15 is comprised of length of base pipe or conduit 20 which extends substantially throughout the completion interval 12 to be fractured. Base pipe 20 is blank (unperforated) throughout most of its length except for a plurality of spaced, perforated sections 21a, 21b, 21c, 21d which, in turn, are formed by a plurality of openings (e.g., holes 22a at 21a, slots 22b in 21b, FIG. 2) radially spaced around the base pipe and extending in rows throughout respective lengths "L" of base pipe 20. Openings 22 may be provided directly through base pipe 20 or each perforated section or may be formed in a separate coupling or length of pipe which is then joined into base pipe 20 at the appropriate spaced intervals. Openings 22 allow fluids to flow into base pipe 20 from the surrounding completion interval annulus 30a (FIG. 1), for a purpose described below. Both the length "L" of each perforated section 21a-d (e.g., between about 1 to about 300 feet) and the longitudinal spacing between perforated sections 21 (e.g., from about 10 to about 1000 feet, preferably about 10 feet apart) may vary within
a single base pipe 20 depending on the characteristics of the particular interval 12 to be fractured.
One or more (e.g., four shown in FIG. 3) relatively small shunt tubes 24 (i.e., 1 to 1-1/2 inch diameter or smaller) are spaced radially around and extend longitudinally 5 along the length of fracturing string 15. These shunt tubes may be round in cross- section (e.g., 24a, FIG. 3) or take other cross-sectional shapes (e.g., substantially rectangular, 24b, FIG. 3). Each of shunt tubes 24 has one or more outlets (e.g., spaced openings 25) along its respective length which provide "alternate flowpaths" for the delivery of fluids to different levels within the completion interval 12 as will be further l o discussed in detail below.
Each shunt tube may be open at least at its upper end to allow fluids to enter therein or where a plurality of outlets 25 are present, the entry of fluid may be provided through some of the openings 25, themselves (e.g., those near the top of each the tube). Further, while outlet openings 25 in each shunt tube 24 may open through the front of is the tube, they may also exit through each side of shunt tube. Shunt tubes of this type have been used to provide alternate flowpaths for fluids in a variety of different well operations, see US Patents 4,945,991; 5,082,052; 5,113,935; 5,161,613; and 5,161,618.
While the openings 22 (see FIG. 4) in each perforated section 21 are designed to allow flow of fluid into base pipe 20, it is important that the flow of particulate material
20 (e.g., proppants, produced sand, etc.) be blocked. This is not a problem when no substantial amount of particulate material will be produced along with the formation fluids from the fractured formation. Accordingly, unscreened openings (e.g., slots 22c, FIG. 5) may be provided in base pipe 20 in the same manner as the small slots are provided in well known, commercially-available "slotted liners". However, where
25 substantial amounts of particulate material will be produced along with the formation fluids, a screening means is provided over the length "L" of each perforated section 21 and is sized to allow the flow of fluids therethrough while blocking any substantial flow of particulates, this being well understood in the well screen art.
The screening means may be comprised of any well known material which
30 screens out the particulate material while allowing fluids to pass therethrough. For
example, as illustrated in FIGS. 1-4, the screening means is comprised of a continuous length of a wrap wire 31 which, in turn, may be cut in a "keystone" cross-section (not shown). Wire 31 is wrapped around base pipe 20 to cover the openings 22 throughout a respective perforated section 21 and can be welded or otherwise secured thereto. Each coil of wire is slightly spaced from its adjacent coils to thereby form fluid passageways
(not shown) between the respective coils. This is basically the same technique as is commonly used in the manufacture of many commercially-available, wire-wrap screens used in well completions. In one embodiment of the present invention (FIGS. 1-3), wire
31 is first wrapped around base pipe 20 at each perforated section 21 before shunt tubes are positioned and secured onto the base pipe. Each shunt tube is then slightly bent at each perforated section 21 to conform with the outer surface of the wire- wrap 31 as it transverses same.
Further, in this embodiment, a perforated sleeve or shroud 33 (only one shown at 21b in FIG. 2) may be placed over an entire perforated section 21 to protect shunt tube 24 during installation into wellbore 11 and to act as a centralizer for fracturing string 15, if needed. Shroud 33 can be made in two pieces and then welded or otherwise secured together after the pieces are fitted around section 21.
In another embodiment (FIG. 4), shunt tubes 24 are first positioned across perforated sections 21 and then wire 31 is wound over both base pipe 20 and shunts 24. In this embodiment, the wire 31 protects the shunt tubes at each perforated section 21. It should be understood that the gap (i.e., well annulus 30, FIG. 1) between the wellbore 11 and the fracturing string 15, especially at the wire- wrapped, perforated sections 21, will be small (i.e., 1 to l'A inches) in most well completions.
In operation (FIGS. 1-2), if wellbore 11 extends for a distance substantially below the bottom of completion interval 12, the wellbore is blocked-off adjacent the lower end of fracture interval 12 by a plug or packer 34, as will be understood in the art. Where fracture interval 12 will produce substantial amounts of particulate material along with the formation fluids when well 10 is put on production, the workstring 14 of FIG. 1, having cross-over 16 and fracturing string 15 at its lower end, is lowered into wellbore 11 thereby forming a; well annulus 30 between the workstring 14 and the
wellbore 11. Fracturing string 15 is positioned adjacent completion interval 12 and packer 34, which is carried on the workstring, is set to isolate the completion interval annulus 30a which lies adjacent completion interval 12 from the rest of the well annulus
30. As will be understood in the art, wellbore 11 and workstring 14 will be filled with the completion fluid that is usually present in wellbore 11 as workstring 14 is lowered therein.
With workstring 14 in place, a fracturing slurry (arrows 40, FIGS. 1 and 2) is pumped down workstring 14, i.e., down through tubing 17, out ports 18 of cross-over
16, and into the top of completion interval annulus 30a. The fracturing slurry may be made up of any well-known carrier fluids commonly used for fracturing formations (e.g., water, etc.) and proppants (e.g., sand) but preferably, the carrier fluid used in the fracturing slurry 40 of the present invention is a relatively, high-viscosity commercially- available "gel" (e.g., 100+ centipoises) of the type routinely used in conventional fracturing operations (e.g., Nersagel, product of Halliburton Company, Duncan, OK). Of course, as is well known in the fracturing art, a pad of fracturing liquid (e.g., gel with no props) can be flowed into the wellbore before the slurry to initiate the fracture(s) if desired.
As the fracturing slurry 40 flows into the top of and down through completion interval annulus 30a, it begins to lose liquid into both the completion interval (e.g., zone 13 A) and into base pipe 20 at the perforated sections 21. The liquid from the slurry will flow through the passageways formed between the coils of wire 31, through openings 22, into base pipe, through return pipe 16a in cross-over 16, and into well annulus 30 above packer 34. To ensure rapid loss of fluid through each of the perforated sections 21, well annulus 30 above the cross-over 16 is opened at the surface to take returns from base pipe 20 through well annulus 30.
As liquid is lost from the slurry, "sand-outs", i.e., sand bridges or blockages 45, will form sequentially at each of the perforated sections. These blockages will form rapidly due to the leak-off of liquid from the slurry into both the zones of the completion interval and the base pipe 20. These bridges form effective barriers which prevent flow past those points in the completion interval annulus 30a. That is, due to the high
viscosity of the gel (e.g., 100+ centipoises), the liquid from the slurry cannot readily flow through the sand bridges 45 once the bridges have formed. Only slight amounts of liquid from the slurry, if any, will pass through a respective sand bridge thereby slowly expanding the size of the sand bridge. Since there are no openings in the blank, base pipe 20 except at perforated sections 21 and since the liquid from the slurry can no longer flow along annulus 30a once a sand bridge 45 is formed at a respective perforated section, slurry 40 now can only flow through the shunt tubes 24. The slurry enters the tops of tubes 24 and flows downward therein to exit into the different levels in completion interval annulus 30a. In the embodiments shown in FIGS. 1-5, the slurry exits through the plurality of vertically- spaced, outlet openings 25 in the shunt tubes 24 which lie between adjacent perforated sections 21. In the embodiment shown in FIG. 6, each shunt tube 24c is of a different length and has a single outlet at the bottom thereof through which the slurry exits at different levels within completion interval 12. The sand bridges 45 effectively act as packers which, in turn, which isolate the respective portions of completion interval annulus 30a which lie therebetween. Continued pumping of slurry through the shunt tubes 24c and out into the respective levels of the completion interval annulus 30a will increase the pressure of the slurry within the respective isolated portions of the annulus 30a until a fracture 50 is initiated in the respective completion zone(s). After the fracture in any specific isolated portion of annulus 30a "sands-off ', and/or if the pressure in that isolated portion rises to the level of the pressure in the shunts, slurry is then diverted on downstream through the shunts and the process is repeated until the fracturing operation is completed. Accordingly, all of the desired completion zones can be fractured substantially throughout their respective lengths by merely pumping the fracturing slurry until all of the desired zones in the completion interval are fractured and propped.
In some well completions, it may be desirable to leave a particular zone(s) (e.g., zone 13B in FIG. 1) unfractured. In such completions, a portion of the length of each shunt tube 24 is left blank or unperforated (i.e., have no openings 25 therein) wherein the blank portion of the shunts tubes will lie adjacent zone 13B when fracturing string
15 is in an operable position within the wellbore. Sand bridges 45 will still form at the perforated sections 21, as described above, but now the slurry 40 can only flow into the isolated portions of annulus 30a which lie adjacent zones 13A and 13C and not into zone 13b, thereby leaving zone 13B unfractured. In many instances, it may be desirable not to take any returns through well annulus 30 during the fracturing operation. Referring now to FIG. 6, well annulus 30 is closed at the surface and wellbore 11 and workstring 14 is filled with a non-compressible, well completion fluid which is usually present after the drilling of wellbore 11 has been completed. Fracturing slurry 40 is flowed down tubing 17 and out through cross-over 16 into the top of completion interval annulus 30a. Since the flow of liquid from the slurry cannot flow through perforated sections 21, it can only flow down the completion interval annulus 30a and into the formation at its "weakest" or most permeable level. As it flows into the formation, it forces at least some of the completion fluid in the annulus 30a ahead of it into the formation. Once a fracture 50 (FIG. 6) is initiated in the formation (can be anywhere within completion interval 12), both liquid from slurry 40 and completion fluid (arrows 55 in FIG. 6) from within completion interval annulus 30a flow into the fracture due to the pressure of the fracturing slurry being pumped into annulus 30a. As completion fluid 55 is displaced from annulus 30a, liquid 40 from the slurry now begins to enter base pipe 20 through the perforated sections (e.g., 21a, 21b, and 21d) farthest from fracture 50. As liquid 40 enters base pipe 20, it forces completion fluid 55 out through perforated section (e.g., 21c) nearest fracture 50. Continued loss of liquid from slurry 40 through these perforated sections will now cause sand bridges to form at the respective perforated sections to isolate portions of annulus 30a, as described above. Once these sand bridges are formed, slurry 40 can now only flow through the shunt tubes 24c and is delivered to the isolated portions of annulus 30a through the respective shunt tubes to complete the fracturing of completion interval 12.
Once the desired zones have been fractured, the well can then be put on production. Tubing string 17 and cross-over 16 can be retrieved and replaced with a string of production tubing (not shown) which, in turn, can be "stabbed-in" or otherwise
connected to fracturing string 15, the latter normally being left in place. Fluids will flow from the production zone(s) within the completion interval 12 and into completion interval annulus 30a. While the sand bridges 45 are substantially impermeable to the flow of high- viscosity liquids (e.g., fracturing gel having a viscosity of about 100+ centipoises), these bridges are readily permeable to the much-lower viscosity, produced fluids (e.g., oil and gas having viscosities of about ±1 centipoise). Accordingly, the production fluids can freely flow through the sand bridges 45 which now act as mini gravel-packs, the wire-wrapped screens (if present), openings 22 in perforated sections 21, and into base pipe 20 for production to the surface.
Claims (20)
- What is claimed is:5 1. A method for fracturing different levels of a completion interval of a subterranean formation which is traversed by a wellbore of a well, said method comprising: positioning a workstring in said wellbore, said workstring including a cross-over and a fracturing string; said fracturing string extending substantially through 0 said completion interval and forming a completion interval annulus with said wellbore when said workstring is in an operable position within said wellbore; said fracturing string comprising: a string of blank, base pipe having a plurality of perforated sections spaced along its length; and 5 at least one alternate flow path extending along said base pipe; flowing a fracturing slurry, comprised of a fracturing liquid and proppants, into said completion interval annulus whereupon liquid from said fracturing slurry is lost into said completion interval and into said base pipe through said perforated sections thereby allowing said proppants to form blockages at said perforated o sections, said blockages effectively isolating those portions of said completion annulus which lie between respective adjacent, perforated sections; and continuing to flow said fracturing slurry into said completion annulus after said blockages have been formed and delivering said fracturing slurry through said at least one alternate flow path to said isolated portions of said completion interval 5 annulus to thereby fracture said different levels of said completion mterval which lie adjacent said respective isolated portions of said completion interval annulus.
- 2. The method of claim 1 wherein said fracturing fluid is a high- viscosity gel and said proppants in said slurry are sand.
- 3. The method of claim 1 wherein a high-viscosity gel without proppants is injected into said completion interval before said fracturing slurry is injected.
- 4. The method of claim 1 wherein said at least one alternate flow path is comprised of shunt tubes which are spaced radially around said fracturing string and which substantially extend through said completion interval, each of said shunt tubes having inlet and a plurality of outlet openings spaced along its length.
- 5. The method of claim 1 wherein said at least one alternate flow path is comprised of shunt tubes which are spaced radially around said fracturing string and which are of different lengths extending into said completion interval, each of said shunt tubes having inlet and at least one outlet spaced along its length.
- 6. The method of claim 3 including: isolating said completion annulus from the remainder of the well annulus prior to pumping said fracturing slurry into said completion interval annulus; and opening said remainder of the well annulus at the surface to flow.
- 7. The method of claim 3 wherein said fracturing slurry is flowed down said workstring and out through said cross-over into the top of said completion interval annulus.
- 8. The method of claim 1 including: ceasing the flow of said fracturing slurry into said completion interval annulus when said different levels of said completion interval has been fractured; and producing said well by flowing production fluids from said completion interval into said completion interval annulus and into said base pipe through said perforated sections.
- 9. An apparatus for fracturing different levels of a completion interval of a subterranean formation which is traversed by a wellbore of a well, said apparatus comprising: a workstring comprising: a tubing string; a cross-over connected to the lower end of said tubing string; and a fracturing string connected to said cross-over; said fracturing string comprising: a length of blank, base pipe having a plurality of perforated sections spaced along its length, each of said perforated sections having a plurality of openings through said base pipe which extend along a portion of said length of said base pipe; and at least one alternate flow path extending along said length of said base pipe; said at least one alternate flow path having an inlet and at least one outlet therein.
- 10. The apparatus of claim 9 including: screen means positioned on said base pipe and over said plurality of openings in each of said perforated sections to allow flow of fluids into said base pipe through said perforated sections while preventing the flow of particulate material into said base pipe therethrough.
- 11. The apparatus of claim 9 wherein said alternate flowpath comprises: a shunt tube extending longitudinally along said base pipe and having an inlet and at least one outlet spaced along its length.
- 12. The apparatus of claim 9 wherein said alternate flowpath comprises: a plurality of shunt tubes spaced radially around said fracturing string and extending longitudinally along said base pipe, each of said shunt tubes having an inlet and a plurality of outlet openings spaced along their respective lengths.
- 13. The apparatus of claim 9 wherein the length of each of said perforated sections along said base pipe is from about 1 to about 300 feet.
- 14. The apparatus of claim 9 wherein the length of each of said perforated sections along said base pipe is from about 5 to about 30 feet.
- 15. The apparatus of claim 9 wherein the said perforated sections are spaced from each other along said base pipe at a distance of from about 10 feet to about 1000 feet.
- 16. The apparatus of claim 10 wherein screen means comprises: wire wrapped around said base pipe and over said openings in said perforated sections, the coils of said wire having gaps therebetween to form passageways through which fluids can pass but which block the flow of particulates therethrough.
- 17. The apparatus of claim 16 wherein said wire is wrapped over said at least one shunt tube at least one of said perforated sections.
- 18. The apparatus of claim 16 wherein said at least one shunt tube passes over said wire at least one of said perforated sections.
- 19. The apparatus of claim 18 including: a perforated sleeve positioned over said at least one shunt tube and said wire on at least one of said perforated sections.
- 20. The apparatus of claim 10 wherein a portion of said length of said shunt tube is blank without any said outlet being positioned along said blank portion of said shunt tube whereby there is no flow from the shunt tube throughout said blank portion of said length of said shunt tube.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/629,203 | 2000-07-31 | ||
US09/629,203 US6644406B1 (en) | 2000-07-31 | 2000-07-31 | Fracturing different levels within a completion interval of a well |
PCT/US2001/023045 WO2002010554A1 (en) | 2000-07-31 | 2001-07-23 | Fracturing different levels within a completion interval of a well |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2001278984A1 true AU2001278984A1 (en) | 2002-05-09 |
AU2001278984B2 AU2001278984B2 (en) | 2006-07-27 |
Family
ID=24522018
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001278984A Expired AU2001278984B2 (en) | 2000-07-31 | 2001-07-23 | Fracturing different levels within a completion interval of a well |
AU7898401A Pending AU7898401A (en) | 2000-07-31 | 2001-07-23 | Fracturing different levels within a completion interval of well |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU7898401A Pending AU7898401A (en) | 2000-07-31 | 2001-07-23 | Fracturing different levels within a completion interval of well |
Country Status (15)
Country | Link |
---|---|
US (2) | US6644406B1 (en) |
EP (1) | EP1305503B1 (en) |
CN (1) | CN1263940C (en) |
AR (1) | AR030078A1 (en) |
AU (2) | AU2001278984B2 (en) |
BR (1) | BR0112934B1 (en) |
CA (1) | CA2417431C (en) |
DE (1) | DE60125545T2 (en) |
EA (1) | EA005190B1 (en) |
MX (1) | MXPA03000915A (en) |
MY (1) | MY128907A (en) |
NO (1) | NO336380B1 (en) |
OA (1) | OA12341A (en) |
PE (1) | PE20020242A1 (en) |
WO (1) | WO2002010554A1 (en) |
Families Citing this family (79)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7100690B2 (en) | 2000-07-13 | 2006-09-05 | Halliburton Energy Services, Inc. | Gravel packing apparatus having an integrated sensor and method for use of same |
US6644406B1 (en) * | 2000-07-31 | 2003-11-11 | Mobil Oil Corporation | Fracturing different levels within a completion interval of a well |
US7152677B2 (en) * | 2000-09-20 | 2006-12-26 | Schlumberger Technology Corporation | Method and gravel packing open holes above fracturing pressure |
US6789624B2 (en) | 2002-05-31 | 2004-09-14 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6557634B2 (en) | 2001-03-06 | 2003-05-06 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6516881B2 (en) | 2001-06-27 | 2003-02-11 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6588507B2 (en) | 2001-06-28 | 2003-07-08 | Halliburton Energy Services, Inc. | Apparatus and method for progressively gravel packing an interval of a wellbore |
US6581689B2 (en) | 2001-06-28 | 2003-06-24 | Halliburton Energy Services, Inc. | Screen assembly and method for gravel packing an interval of a wellbore |
US6601646B2 (en) | 2001-06-28 | 2003-08-05 | Halliburton Energy Services, Inc. | Apparatus and method for sequentially packing an interval of a wellbore |
US6516882B2 (en) | 2001-07-16 | 2003-02-11 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6830104B2 (en) * | 2001-08-14 | 2004-12-14 | Halliburton Energy Services, Inc. | Well shroud and sand control screen apparatus and completion method |
US6702019B2 (en) | 2001-10-22 | 2004-03-09 | Halliburton Energy Services, Inc. | Apparatus and method for progressively treating an interval of a wellbore |
US6772837B2 (en) | 2001-10-22 | 2004-08-10 | Halliburton Energy Services, Inc. | Screen assembly having diverter members and method for progressively treating an interval of a welibore |
US6907936B2 (en) | 2001-11-19 | 2005-06-21 | Packers Plus Energy Services Inc. | Method and apparatus for wellbore fluid treatment |
US7032665B1 (en) * | 2001-11-21 | 2006-04-25 | Berrier Mark L | System and method for gravel packaging a well |
US6899176B2 (en) | 2002-01-25 | 2005-05-31 | Halliburton Energy Services, Inc. | Sand control screen assembly and treatment method using the same |
US6719051B2 (en) | 2002-01-25 | 2004-04-13 | Halliburton Energy Services, Inc. | Sand control screen assembly and treatment method using the same |
US7207383B2 (en) * | 2002-02-25 | 2007-04-24 | Schlumberger Technology Corporation | Multiple entrance shunt |
US6715545B2 (en) | 2002-03-27 | 2004-04-06 | Halliburton Energy Services, Inc. | Transition member for maintaining for fluid slurry velocity therethrough and method for use of same |
US6776238B2 (en) | 2002-04-09 | 2004-08-17 | Halliburton Energy Services, Inc. | Single trip method for selectively fracture packing multiple formations traversed by a wellbore |
US6793017B2 (en) * | 2002-07-24 | 2004-09-21 | Halliburton Energy Services, Inc. | Method and apparatus for transferring material in a wellbore |
US8167047B2 (en) | 2002-08-21 | 2012-05-01 | Packers Plus Energy Services Inc. | Method and apparatus for wellbore fluid treatment |
US6814139B2 (en) | 2002-10-17 | 2004-11-09 | Halliburton Energy Services, Inc. | Gravel packing apparatus having an integrated joint connection and method for use of same |
US6814144B2 (en) * | 2002-11-18 | 2004-11-09 | Exxonmobil Upstream Research Company | Well treating process and system |
US6857476B2 (en) | 2003-01-15 | 2005-02-22 | Halliburton Energy Services, Inc. | Sand control screen assembly having an internal seal element and treatment method using the same |
US6886634B2 (en) | 2003-01-15 | 2005-05-03 | Halliburton Energy Services, Inc. | Sand control screen assembly having an internal isolation member and treatment method using the same |
US20040140089A1 (en) * | 2003-01-21 | 2004-07-22 | Terje Gunneroed | Well screen with internal shunt tubes, exit nozzles and connectors with manifold |
US6978840B2 (en) * | 2003-02-05 | 2005-12-27 | Halliburton Energy Services, Inc. | Well screen assembly and system with controllable variable flow area and method of using same for oil well fluid production |
US7870898B2 (en) | 2003-03-31 | 2011-01-18 | Exxonmobil Upstream Research Company | Well flow control systems and methods |
EP1608845B1 (en) * | 2003-03-31 | 2016-11-23 | Exxonmobil Upstream Research Company | A wellbore apparatus and method for completion, production and injection |
US6994170B2 (en) | 2003-05-29 | 2006-02-07 | Halliburton Energy Services, Inc. | Expandable sand control screen assembly having fluid flow control capabilities and method for use of same |
US7140437B2 (en) | 2003-07-21 | 2006-11-28 | Halliburton Energy Services, Inc. | Apparatus and method for monitoring a treatment process in a production interval |
EA008643B1 (en) * | 2003-12-03 | 2007-06-29 | Эксонмобил Апстрим Рисерч Компани | Wellbore gravel packing apparatus and method |
US6991037B2 (en) * | 2003-12-30 | 2006-01-31 | Geosierra Llc | Multiple azimuth control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments |
US7066266B2 (en) * | 2004-04-16 | 2006-06-27 | Key Energy Services | Method of treating oil and gas wells |
US7243723B2 (en) * | 2004-06-18 | 2007-07-17 | Halliburton Energy Services, Inc. | System and method for fracturing and gravel packing a borehole |
WO2006014951A2 (en) * | 2004-07-30 | 2006-02-09 | Key Energy Services, Inc. | Method of pumping an “in-the formation” diverting agent in a lateral section of an oil or gas well |
US7721801B2 (en) * | 2004-08-19 | 2010-05-25 | Schlumberger Technology Corporation | Conveyance device and method of use in gravel pack operation |
US20060037752A1 (en) * | 2004-08-20 | 2006-02-23 | Penno Andrew D | Rat hole bypass for gravel packing assembly |
US7387165B2 (en) | 2004-12-14 | 2008-06-17 | Schlumberger Technology Corporation | System for completing multiple well intervals |
US7322417B2 (en) * | 2004-12-14 | 2008-01-29 | Schlumberger Technology Corporation | Technique and apparatus for completing multiple zones |
US7926571B2 (en) * | 2005-03-15 | 2011-04-19 | Raymond A. Hofman | Cemented open hole selective fracing system |
US7267172B2 (en) | 2005-03-15 | 2007-09-11 | Peak Completion Technologies, Inc. | Cemented open hole selective fracing system |
US7461695B2 (en) * | 2005-04-01 | 2008-12-09 | Schlumberger Technology Corporation | System and method for creating packers in a wellbore |
NO325506B1 (en) * | 2005-12-27 | 2008-05-26 | Rune Freyer | Method and apparatus for stimulating a subsurface well |
US7661476B2 (en) * | 2006-11-15 | 2010-02-16 | Exxonmobil Upstream Research Company | Gravel packing methods |
US8127847B2 (en) * | 2007-12-03 | 2012-03-06 | Baker Hughes Incorporated | Multi-position valves for fracturing and sand control and associated completion methods |
US8757273B2 (en) | 2008-04-29 | 2014-06-24 | Packers Plus Energy Services Inc. | Downhole sub with hydraulically actuable sleeve valve |
US7819193B2 (en) | 2008-06-10 | 2010-10-26 | Baker Hughes Incorporated | Parallel fracturing system for wellbores |
BRPI0803646B1 (en) * | 2008-08-29 | 2019-05-14 | Petróleo Brasileiro S/A - Petrobras | UNDERGROUND DEPRESSURIZATION SYSTEM AMONG PRODUCING WELL COATINGS |
CN102203375B (en) | 2008-11-03 | 2014-05-14 | 埃克森美孚上游研究公司 | Well flow control systems and methods |
US8839861B2 (en) | 2009-04-14 | 2014-09-23 | Exxonmobil Upstream Research Company | Systems and methods for providing zonal isolation in wells |
CA2799940C (en) | 2010-05-21 | 2015-06-30 | Schlumberger Canada Limited | Method and apparatus for deploying and using self-locating downhole devices |
US8297358B2 (en) | 2010-07-16 | 2012-10-30 | Baker Hughes Incorporated | Auto-production frac tool |
US8448706B2 (en) * | 2010-08-25 | 2013-05-28 | Schlumberger Technology Corporation | Delivery of particulate material below ground |
US8662177B2 (en) * | 2011-02-28 | 2014-03-04 | Baker Hughes Incorporated | Hydraulic fracture diverter apparatus and method thereof |
US8869898B2 (en) | 2011-05-17 | 2014-10-28 | Baker Hughes Incorporated | System and method for pinpoint fracturing initiation using acids in open hole wellbores |
US9574433B2 (en) * | 2011-08-05 | 2017-02-21 | Petrohawk Properties, Lp | System and method for quantifying stimulated rock quality in a wellbore |
US8448705B2 (en) | 2011-10-03 | 2013-05-28 | Halliburton Energy Services, Inc. | Methods of preventing premature fracturing of a subterranean formation using a sheath |
WO2013052033A1 (en) * | 2011-10-03 | 2013-04-11 | Halliburton Energy Services, Inc. | Methods of preventing premature fracturing of a subterrranean formation using a sheath |
EA025464B1 (en) | 2011-10-12 | 2016-12-30 | Эксонмобил Апстрим Рисерч Компани | Fluid filtering device for a wellbore and method for completing a wellbore |
US9238953B2 (en) | 2011-11-08 | 2016-01-19 | Schlumberger Technology Corporation | Completion method for stimulation of multiple intervals |
EP2607616A1 (en) * | 2011-12-23 | 2013-06-26 | Welltec A/S | Production system for producing hydrocarbons from a well |
SG11201407641SA (en) * | 2012-06-11 | 2014-12-30 | Halliburton Energy Services Inc | Shunt tube connection and distribution assembly and method |
SG11201407643WA (en) * | 2012-06-11 | 2014-12-30 | Halliburton Energy Services Inc | Shunt tube connection assembly and method |
US9650851B2 (en) | 2012-06-18 | 2017-05-16 | Schlumberger Technology Corporation | Autonomous untethered well object |
EP2912260B1 (en) * | 2012-10-26 | 2017-08-16 | ExxonMobil Upstream Research Company | Wellbore apparatus and method for sand control using gravel reserve |
CN104755695B (en) | 2012-10-26 | 2018-07-03 | 埃克森美孚上游研究公司 | Method for the underground adapter assembly of flow control and for completing pit shaft |
US9638013B2 (en) | 2013-03-15 | 2017-05-02 | Exxonmobil Upstream Research Company | Apparatus and methods for well control |
WO2014149395A2 (en) | 2013-03-15 | 2014-09-25 | Exxonmobil Upstream Research Company | Sand control screen having improved reliability |
EP2978930B1 (en) * | 2013-03-26 | 2018-05-09 | Halliburton Energy Services, Inc. | Exterior drain tube for well screen assemblies |
US9631468B2 (en) | 2013-09-03 | 2017-04-25 | Schlumberger Technology Corporation | Well treatment |
US9441455B2 (en) * | 2013-09-27 | 2016-09-13 | Baker Hughes Incorporated | Cement masking system and method thereof |
US9670756B2 (en) * | 2014-04-08 | 2017-06-06 | Exxonmobil Upstream Research Company | Wellbore apparatus and method for sand control using gravel reserve |
CN105484721B (en) * | 2016-01-14 | 2018-03-13 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of efficient pressing crack construction process pipe string of horizontal well and pressing crack construction technique |
US10415382B2 (en) * | 2016-05-03 | 2019-09-17 | Schlumberger Technology Corporation | Method and system for establishing well performance during plug mill-out or cleanout/workover operations |
CN110617046B (en) * | 2019-10-17 | 2021-07-30 | 中国石油大学(华东) | Shaft device for horizontal well multistage staged fracturing physical simulation experiment |
CN111963111A (en) * | 2020-07-08 | 2020-11-20 | 中国海洋石油集团有限公司 | Loose low-permeability open hole horizontal well filling sand prevention and staged fracturing integrated process method |
CN113431560A (en) * | 2021-07-09 | 2021-09-24 | 中国地质科学院地质力学研究所 | Equal-path double-channel fracturing device suitable for hydrofracturing ground stress measurement |
Family Cites Families (96)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US189809A (en) * | 1877-04-17 | Improvement in burial-caskets | ||
US699A (en) * | 1838-04-21 | stone | ||
US702A (en) * | 1838-04-21 | Improved process of dyeing wool | ||
US125007A (en) * | 1872-03-26 | Improvement in metallic fasteners for leather | ||
US10496A (en) * | 1854-02-07 | batoheldee | ||
US66560A (en) * | 1867-07-09 | Dbxtbe h | ||
US700A (en) * | 1838-04-21 | Photo-litho | ||
US701A (en) * | 1838-04-21 | Seth gkaham | ||
US2224630A (en) | 1939-09-11 | 1940-12-10 | Socony Vacuum Oil Co Inc | Screen pipe with fragile lining |
US3153451A (en) | 1963-02-07 | 1964-10-20 | Forrest E Chancellor | Apparatus for completing a well |
US3548935A (en) | 1968-10-10 | 1970-12-22 | Acie Darrel Harkins | Apparatus for development and completion of wells |
US3637010A (en) | 1970-03-04 | 1972-01-25 | Union Oil Co | Apparatus for gravel-packing inclined wells |
US3830294A (en) | 1972-10-24 | 1974-08-20 | Baker Oil Tools Inc | Pulsing gravel pack tool |
CA975291A (en) | 1973-03-23 | 1975-09-30 | Union Oil Company Of California | Gravel packing tool and removable fluid diverting baffles therefor |
US3963076A (en) | 1975-03-07 | 1976-06-15 | Baker Oil Tools, Inc. | Method and apparatus for gravel packing well bores |
US3999608A (en) | 1975-09-22 | 1976-12-28 | Smith Donald M | Oil well gravel packing method and apparatus |
US4018282A (en) | 1976-02-26 | 1977-04-19 | Exxon Production Research Company | Method and apparatus for gravel packing wells |
US4046198A (en) | 1976-02-26 | 1977-09-06 | Exxon Production Research Company | Method and apparatus for gravel packing wells |
US4018283A (en) | 1976-03-25 | 1977-04-19 | Exxon Production Research Company | Method and apparatus for gravel packing wells |
US4044832A (en) | 1976-08-27 | 1977-08-30 | Baker International Corporation | Concentric gravel pack with crossover tool and method of gravel packing |
US4127173A (en) | 1977-07-28 | 1978-11-28 | Exxon Production Research Company | Method of gravel packing a well |
US4192375A (en) | 1978-12-11 | 1980-03-11 | Union Oil Company Of California | Gravel-packing tool assembly |
US4253522A (en) | 1979-05-21 | 1981-03-03 | Otis Engineering Corporation | Gravel pack tool |
JPS5832275B2 (en) | 1980-12-11 | 1983-07-12 | 永岡金網株式会社 | screen |
US4393932A (en) | 1981-03-16 | 1983-07-19 | Bodine Albert G | Method and apparatus for uniformly packing gravel around a well casing or liner |
US4418754A (en) | 1981-12-02 | 1983-12-06 | Halliburton Company | Method and apparatus for gravel packing a zone in a well |
US4469178A (en) | 1983-04-29 | 1984-09-04 | Solum James R | Well gravel packing method |
US4522264A (en) | 1983-09-02 | 1985-06-11 | Otis Engineering Corporation | Apparatus and method for treating wells |
US4570714A (en) | 1983-12-22 | 1986-02-18 | Geo Vann, Inc. | Gravel pack assembly |
US4553595A (en) | 1984-06-01 | 1985-11-19 | Texaco Inc. | Method for forming a gravel packed horizontal well |
US4558742A (en) | 1984-07-13 | 1985-12-17 | Texaco Inc. | Method and apparatus for gravel packing horizontal wells |
US4685519A (en) * | 1985-05-02 | 1987-08-11 | Mobil Oil Corporation | Hydraulic fracturing and gravel packing method employing special sand control technique |
US4681163A (en) | 1985-11-12 | 1987-07-21 | Well Improvement Specialists, Inc. | Sand control system |
JPS62156493A (en) | 1985-12-27 | 1987-07-11 | 永岡金網株式会社 | Double cylinder screen |
US4700777A (en) | 1986-04-10 | 1987-10-20 | Halliburton Company | Gravel packing apparatus and method |
DE3614537A1 (en) | 1986-04-29 | 1987-11-12 | Otis Engineering Gmbh | FILTER DEVICE FOR OIL DELIVERY DEVICES |
US4733723A (en) | 1986-07-18 | 1988-03-29 | Callegari Sr Stephen R | Gravel pack assembly |
US4856591A (en) | 1988-03-23 | 1989-08-15 | Baker Hughes Incorporated | Method and apparatus for completing a non-vertical portion of a subterranean well bore |
US4858691A (en) | 1988-06-13 | 1989-08-22 | Baker Hughes Incorporated | Gravel packing apparatus and method |
US4915172A (en) | 1988-03-23 | 1990-04-10 | Baker Hughes Incorporated | Method for completing a non-vertical portion of a subterranean well bore |
US4932474A (en) | 1988-07-14 | 1990-06-12 | Marathon Oil Company | Staged screen assembly for gravel packing |
US4915173A (en) | 1988-12-07 | 1990-04-10 | Dowell Schlumberger Incorporated | Method for staged placement of gravel packs |
US4969522A (en) | 1988-12-21 | 1990-11-13 | Mobil Oil Corporation | Polymer-coated support and its use as sand pack in enhanced oil recovery |
US4969523A (en) | 1989-06-12 | 1990-11-13 | Dowell Schlumberger Incorporated | Method for gravel packing a well |
US4945991A (en) | 1989-08-23 | 1990-08-07 | Mobile Oil Corporation | Method for gravel packing wells |
US4969524A (en) | 1989-10-17 | 1990-11-13 | Halliburton Company | Well completion assembly |
US4964464A (en) | 1989-10-31 | 1990-10-23 | Mobil Oil Corporation | Anti-sand bridge tool and method for dislodging sand bridges |
US5069279A (en) | 1990-07-05 | 1991-12-03 | Nagaoka Kanaami Kabushiki Kaisha | Well structure having a screen element with wire supporting rods |
US5082052A (en) | 1991-01-31 | 1992-01-21 | Mobil Oil Corporation | Apparatus for gravel packing wells |
US5113935A (en) | 1991-05-01 | 1992-05-19 | Mobil Oil Corporation | Gravel packing of wells |
JP2891568B2 (en) | 1991-08-09 | 1999-05-17 | 株式会社ナガオカ | Screen with protective frame for horizontal or inclined wells |
US5161613A (en) | 1991-08-16 | 1992-11-10 | Mobil Oil Corporation | Apparatus for treating formations using alternate flowpaths |
US5161618A (en) | 1991-08-16 | 1992-11-10 | Mobil Oil Corporation | Multiple fractures from a single workstring |
JP2891583B2 (en) | 1991-12-27 | 1999-05-17 | 株式会社ナガオカ | Method of manufacturing selective isolation screen |
JP2891582B2 (en) | 1991-12-27 | 1999-05-17 | 株式会社ナガオカ | Method of manufacturing selective isolation screen |
US5333688A (en) | 1993-01-07 | 1994-08-02 | Mobil Oil Corporation | Method and apparatus for gravel packing of wells |
US5333689A (en) | 1993-02-26 | 1994-08-02 | Mobil Oil Corporation | Gravel packing of wells with fluid-loss control |
US5390966A (en) | 1993-10-22 | 1995-02-21 | Mobil Oil Corporation | Single connector for shunt conduits on well tool |
US5419394A (en) | 1993-11-22 | 1995-05-30 | Mobil Oil Corporation | Tools for delivering fluid to spaced levels in a wellbore |
JPH07158124A (en) | 1993-12-02 | 1995-06-20 | Nagaoka:Kk | Screen for well having uniform outside diameter |
US5476143A (en) | 1994-04-28 | 1995-12-19 | Nagaoka International Corporation | Well screen having slurry flow paths |
US5417284A (en) | 1994-06-06 | 1995-05-23 | Mobil Oil Corporation | Method for fracturing and propping a formation |
US5435391A (en) | 1994-08-05 | 1995-07-25 | Mobil Oil Corporation | Method for fracturing and propping a formation |
US5515915A (en) | 1995-04-10 | 1996-05-14 | Mobil Oil Corporation | Well screen having internal shunt tubes |
US6355715B1 (en) | 1995-06-07 | 2002-03-12 | Acushnet Company | Multi-layered golf ball and composition |
US5875843A (en) * | 1995-07-14 | 1999-03-02 | Hill; Gilman A. | Method for vertically extending a well |
US5560427A (en) | 1995-07-24 | 1996-10-01 | Mobil Oil Corporation | Fracturing and propping a formation using a downhole slurry splitter |
US5588487A (en) | 1995-09-12 | 1996-12-31 | Mobil Oil Corporation | Tool for blocking axial flow in gravel-packed well annulus |
US5690175A (en) | 1996-03-04 | 1997-11-25 | Mobil Oil Corporation | Well tool for gravel packing a well using low viscosity fluids |
US5848645A (en) | 1996-09-05 | 1998-12-15 | Mobil Oil Corporation | Method for fracturing and gravel-packing a well |
US5842516A (en) | 1997-04-04 | 1998-12-01 | Mobil Oil Corporation | Erosion-resistant inserts for fluid outlets in a well tool and method for installing same |
US5868200A (en) | 1997-04-17 | 1999-02-09 | Mobil Oil Corporation | Alternate-path well screen having protected shunt connection |
US5890533A (en) | 1997-07-29 | 1999-04-06 | Mobil Oil Corporation | Alternate path well tool having an internal shunt tube |
US6427775B1 (en) | 1997-10-16 | 2002-08-06 | Halliburton Energy Services, Inc. | Methods and apparatus for completing wells in unconsolidated subterranean zones |
EP0909875A3 (en) | 1997-10-16 | 1999-10-27 | Halliburton Energy Services, Inc. | Method of completing well in unconsolidated subterranean zone |
US6481494B1 (en) | 1997-10-16 | 2002-11-19 | Halliburton Energy Services, Inc. | Method and apparatus for frac/gravel packs |
US6003600A (en) | 1997-10-16 | 1999-12-21 | Halliburton Energy Services, Inc. | Methods of completing wells in unconsolidated subterranean zones |
US6059032A (en) | 1997-12-10 | 2000-05-09 | Mobil Oil Corporation | Method and apparatus for treating long formation intervals |
US6230803B1 (en) | 1998-12-03 | 2001-05-15 | Baker Hughes Incorporated | Apparatus and method for treating and gravel-packing closely spaced zones |
US6405800B1 (en) | 1999-01-21 | 2002-06-18 | Osca, Inc. | Method and apparatus for controlling fluid flow in a well |
US6227303B1 (en) | 1999-04-13 | 2001-05-08 | Mobil Oil Corporation | Well screen having an internal alternate flowpath |
NO20003619L (en) | 1999-07-27 | 2001-01-29 | Halliburton Energy Serv Inc | Method and apparatus for completing wells in unconsolidated zones below ground |
US6220345B1 (en) | 1999-08-19 | 2001-04-24 | Mobil Oil Corporation | Well screen having an internal alternate flowpath |
US6286598B1 (en) | 1999-09-29 | 2001-09-11 | Halliburton Energy Services, Inc. | Single trip perforating and fracturing/gravel packing |
US6409219B1 (en) | 1999-11-12 | 2002-06-25 | Baker Hughes Incorporated | Downhole screen with tubular bypass |
US6298916B1 (en) | 1999-12-17 | 2001-10-09 | Schlumberger Technology Corporation | Method and apparatus for controlling fluid flow in conduits |
US6302207B1 (en) | 2000-02-15 | 2001-10-16 | Halliburton Energy Services, Inc. | Methods of completing unconsolidated subterranean producing zones |
US6644406B1 (en) * | 2000-07-31 | 2003-11-11 | Mobil Oil Corporation | Fracturing different levels within a completion interval of a well |
US6409211B1 (en) | 2000-10-10 | 2002-06-25 | Trw Vehicle Safety Systems Inc. | Inflatable side curtain |
US6557634B2 (en) | 2001-03-06 | 2003-05-06 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6749023B2 (en) | 2001-06-13 | 2004-06-15 | Halliburton Energy Services, Inc. | Methods and apparatus for gravel packing, fracturing or frac packing wells |
US6516881B2 (en) | 2001-06-27 | 2003-02-11 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
US6588507B2 (en) | 2001-06-28 | 2003-07-08 | Halliburton Energy Services, Inc. | Apparatus and method for progressively gravel packing an interval of a wellbore |
US6601646B2 (en) | 2001-06-28 | 2003-08-05 | Halliburton Energy Services, Inc. | Apparatus and method for sequentially packing an interval of a wellbore |
US6581689B2 (en) | 2001-06-28 | 2003-06-24 | Halliburton Energy Services, Inc. | Screen assembly and method for gravel packing an interval of a wellbore |
US6516882B2 (en) | 2001-07-16 | 2003-02-11 | Halliburton Energy Services, Inc. | Apparatus and method for gravel packing an interval of a wellbore |
-
2000
- 2000-07-31 US US09/629,203 patent/US6644406B1/en not_active Expired - Lifetime
-
2001
- 2001-07-20 MY MYPI20013437A patent/MY128907A/en unknown
- 2001-07-23 CA CA002417431A patent/CA2417431C/en not_active Expired - Lifetime
- 2001-07-23 MX MXPA03000915A patent/MXPA03000915A/en active IP Right Grant
- 2001-07-23 AU AU2001278984A patent/AU2001278984B2/en not_active Expired
- 2001-07-23 AU AU7898401A patent/AU7898401A/en active Pending
- 2001-07-23 EA EA200300207A patent/EA005190B1/en not_active IP Right Cessation
- 2001-07-23 EP EP01957216A patent/EP1305503B1/en not_active Expired - Lifetime
- 2001-07-23 DE DE60125545T patent/DE60125545T2/en not_active Expired - Lifetime
- 2001-07-23 CN CNB018137245A patent/CN1263940C/en not_active Expired - Lifetime
- 2001-07-23 WO PCT/US2001/023045 patent/WO2002010554A1/en active IP Right Grant
- 2001-07-23 BR BRPI0112934-1A patent/BR0112934B1/en not_active IP Right Cessation
- 2001-07-23 OA OA1200300013A patent/OA12341A/en unknown
- 2001-07-24 PE PE2001000745A patent/PE20020242A1/en active IP Right Grant
- 2001-07-30 AR ARP010103636A patent/AR030078A1/en active IP Right Grant
-
2003
- 2003-01-30 NO NO20030470A patent/NO336380B1/en not_active IP Right Cessation
- 2003-09-11 US US10/659,818 patent/US7108060B2/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2417431C (en) | Fracturing different levels within a completion interval of a well | |
AU2001278984A1 (en) | Fracturing different levels within a completion interval of a well | |
EP0764235B1 (en) | Method for fracturing and propping a subterranean formation | |
EP0774042B1 (en) | Method of fracturing and propping a formation | |
US5848645A (en) | Method for fracturing and gravel-packing a well | |
US5560427A (en) | Fracturing and propping a formation using a downhole slurry splitter | |
US5161618A (en) | Multiple fractures from a single workstring | |
US6749023B2 (en) | Methods and apparatus for gravel packing, fracturing or frac packing wells | |
US6220345B1 (en) | Well screen having an internal alternate flowpath | |
EP0729543B1 (en) | Well tool | |
US20020189808A1 (en) | Methods and apparatus for gravel packing or frac packing wells | |
US5515915A (en) | Well screen having internal shunt tubes | |
AU662557B2 (en) | Treating formations using alternate flowpaths | |
US6588506B2 (en) | Method and apparatus for gravel packing a well | |
US6464007B1 (en) | Method and well tool for gravel packing a long well interval using low viscosity fluids |