MXPA06006226A - Wellbore gravel packing apparatus and method - Google Patents

Abstract

A wellbore apparatus and method for use in a wellbore for completion and production are disclosed. The apparatus comprises an outer permeable material (15) in the wellbore comprising a first basepipe section (11) with at least a portion of the basepipe is perforated (21), the first basepipe is inside the outer permeable material (15) and at least part of the perforated basepipe is designed to be adjacent to a production interval (14), a second basepipe section (10) with at least a portion of thesecond basepipe is slotted (16), the second basepipe is inside the outer permeable material (15) and above the perforated basepipe section (11) designed to be adjacent to the production interval wherein at least a portion of the slotted basepipe is designed to be adjacent to a non production section of the wellbore. The production completion apparatus may be installed into the wellbore to provide redundancy against well-screen failure.

Description

DEVICE AND METHOD OF POLLING GRAVEL FILTER DESCRIPTION OF THE INVENTION This invention relates generally to an apparatus and method of sounding to use the apparatus in a sounding. More particularly, this invention relates to a sounding co-location using the sounding apparatus suitable for hydrocarbon production and recording filter. In the production of hydrocarbons from unconsolidated hydrocarbon production sites, a well is provided which extends from the surface of the land in the unconsolidated or poorly consolidated reservoir. The well can be completed by employing conventional completion practices, such as locating and centering the liner in the wellbore and forming bores through the lining and the cement lining surrounding the liner, thereby forming an open production range that is communicated with the deposit. The production of hydrocarbons from underground reservoirs commonly includes a survey completed in either a coated well or an uncoated well condition. In coated well applications, a sounding liner is placed in the borehole and the annular zone between the lining and the borehole is filled with cement. Perforations are typically made through the lining and the cement in the production range to allow reservoir fluids (such as hydrocarbons) to flow from the zone of production intervals to the liner. A production pipeline is then placed inside the liner, creating an annular zone between the liner and the production pipeline. The reservoir fluids flow to the annular zone and then to the production tubing to the surface through the tubing associated with the production tubing. In uncoated well applications, the production pipeline is placed directly into the borehole without coating or cement. The reservoir fluids flow into the annular zone between the reservoir and the production tubing and after the production tubing to the • surface. The production of hydrocarbons from unconsolidated or poorly consolidated reservoirs can result in the production of sand along with hydrocarbons. The sand produced is undesirable for many reasons. It is abrasive to the components inside the well such as the pipe, the pump and the valves, and must be removed from the fluids produced on the surface. In addition, it can partially or completely block the well, thereby requiring expensive overwork. In addition, the sand that flows from the deposit may leave a cavity, which can result in the collapse of the deposit and the collapse of the coating. A technique commonly used to control the flow of sand from an unconsolidated or poorly consolidated reservoir pit involves the formation of a gravel filter in the well adjacent to part or all of the unconsolidated or poorly consolidated reservoir exposed to the well. Therefore, hydrocarbons are produced from the deposit through the gravel filter and the well. Gravel filters have generally been successful in mitigating the flow of sand from the reservoir into the well. Various methods of control of solids at the bottom of the preparation, particularly sand that are practiced in the industry, are shown in Figures 1 (a), 1 (b), 1 (c) and 1 (d).

In Figure 1 (a), the production pipe or tube (not shown) typically includes a permeable outer member 1 (such as a sand screen or sand control device) around its outer periphery, which is placed adjacent to each production interval. The sand screen prevents the flow of sand from the production interval 2 in the production line (not shown) into the sand screen 1. Slotted or perforated liners such as sand screens or sand control devices can also be used. Figure 1 (a) is an example of a sieve-only completion without any gravel filter present. As discussed in the above, one of the most common techniques used to control production in gravel filtration where sand or other particular matter is deposited around the production pipe or well screen to create a filter at the bottom of the borehole. Figures 1 (b) and l (c) are examples of coated well gravel and uncoated well filters, respectively. Figure 1 (b) illustrates the gravel filter 3 outside the screen 1, the sounding coating 5 surrounding the gravel filter 3, and the cement 8 around the sounding coating 5. Typically, the perforations 7 are made through the sounding liner 5 and the cement 8 in the production interval 2 of the underground deposits around the sounding. Figure 1 (c) illustrates an uncoated pit gravel filter where the sounding has no coating and the gravel filter material 3 is deposited around the sieve 1 for sanding sand. A variation of a gravel filter involves pumping the gravel slurry at sufficiently high pressures to exceed the reservoir fracture pressure ("Frac-Pac") (Fracture Package). Figure 1 (d) is an example of a Frac-Pack. The well screen 1 is surrounded by a gravel filter 3, which is contained by a drilling liner 5 and cement 8. The drilling 6 in the drilling liner allows the gravel to be distributed out of the borehole to the desired range. The number and placement of perforations is selected to facilitate effective distribution of the gravel filter out of the sounding liner into the range being treated with the gravel slurry. A problem associated with the gravel filter, especially with long or inclined gravel filter intervals, arises from the difficulty of completing the filtration of the annular zone between the screen and the coating for gravel filters in the coating or between the screen and the side of the well for gravel filters from uncoated well or widened wells. The incomplete filter is often associated with the formation of "bridges" of sand in the range to be filtered which avoids the placement of sufficient sand under that bridge, for the gravel filter from top to bottom, or on that bridge, for the Gravel filter from bottom to top. The problem associated with bridge formation is often avoided by using alternative trajectory technology, which provides separate trajectories for the sand-laden grout to reach the places on or under the bridge or sand bridges. If the sand screen is damaged or deteriorated, sand infiltration may result in a degrade-ion flow. The degradation of flow during the production of underground deposits may result in a reduction in well productivity or complete cessation of well production. This loss of functionality can occur for a number of reasons, including but not limited to migration of fines, shale or reservoir sands, influx or conicity of unwanted fluids (such as water or gas, formation of inorganic scale - or organic, creation of emulsions or sediments) accumulation of drilling debris (such as mud additives and mud crust), mechanical damage to the sand control screen, incomplete gravel filter and mechanical failure due to collapse of the borehole, of compaction / subsidence of the deposit; or other geomechanical movements. The designs of current industry wells include little, if any, redundancy in the event of problems or failures that result in the degradation of the flow of the well sieve failure. In those cases the capacity of a well to produce in or near. its design capacity is supported only by a "simple" barrier to the damage mechanism (for example, the sieve to ensure control of sand in unconsolidated reservoirs). In many cases, the usefulness of the well can be compromised by the degradation that occurs in a simple barrier. Therefore, the overall reliability of the system is very low. Well flow degradation frequently leads to drilling operations or costly replacement overwork. Current industrial standard practice uses a certain type of sand screen only or together with artificially placed gravel filter (sand or support agent) to retain the sand to the deposit. All types of completion of the prior art are "simple barrier" completions with the sand screen being the last "line of defense" to prevent sand from migrating from the borehole to the production pipeline. Any damage to the installed sand filter or sieve will result in failure of the sand control completion and subsequent production of the reservoir sand, as well as the obturation of any portion of the sand control completion (caused by the migration). fines, formation of scale, etc.) will result in partial or complete loss of well productivity.The lack of any redundancy in the case or mechanical damage or production degradation results in the loss of productivity of the well of the wells. Simple Barrier Completion Designs Accordingly, there is a need for a well completion apparatus and method to protect the sounding of the infiltration of the gravel filter in the case of mechanical damage to the well screen.This invention satisfies this need. A sounding apparatus is described The sounding apparatus comprises, an outer permeable material, a first section of base pipe in of at least a portion of the base pipe is drilled, the first base pipe is within the outer permeable material and at least part of the perforated base pipe is designed to be adjacent to a production gap, and a second pipe section base where at least a portion of the second base pipe is grooved, the second base pipe is within the outer permeable material and on the perforated base pipe section designed to be adjacent to the production interval and where at least a portion of the slotted base pipe is designed to be adjacent to a section without sounding production, and the first and second base pipes provide a three-dimensional surface that defines a fluid flow path through the sounding. A second probing apparatus is also described. The apparatus comprises an outer permeable material, a section of perforated base pipe within the outer permeable materials where at least part of the perforated base pipe is designed to be adjacent to a production range of a sounding, a section of grooved base pipe inside the outer permeable material and over the perforated base pipe section designed to be adjacent to the production interval where at least a portion of the grooved base pipe is designed to be adjacent to an unperforated section within the borehole, and the base pipes Perforated and resumed provide a three-dimensional surface that defines a path of fluid flow through the well.

A method of well completion is also described. The method comprises providing a sounding apparatus comprising, providing a sounding apparatus comprising an outer permeable material, a first section of base pipe with at least a portion of the base pipe being drilled, the first base pipe being within the outer permeable material and at least part of the perforated base pipe is designed to be adjacent to a production interval, and a second section of base pipe with at least a portion of the second base pipe is grooved, the second base pipe is within the outer permeable material and over the section of perforated base pipe designed to be adjacent to the production range where at least a portion of the grooved base pipe is designed to be adjacent to the production range where at least a portion of the pipeline slotted base is designed to be adjacent to a section without sounding production, the first and second base pipes provide a three-dimensional surface that defines whether it is a fluid flow path through the borehole, and the borehole apparatus is installed in a borehole where at least part of the base pipe perforated within the outer permeable material is adjacent to an interval of production and at least part of the grooved base pipe within the outer permeable material is adjacent to a section without sounding production. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 (a) is an illustration of a bare sieve sand control completion; Figure 1 (b) is an illustration of a well control completion of coated well filter; Figure 1 (c) is an illustration of an uncoated well gravel filter sand control completion; Figure 1 (d) is an illustration of a Frac-Pack sand control completion; Figure 2 (a) is an illustration of an uncoated production interval of a sounding using a mode of the sounding apparatus; Figure 2 (b) is a cross-sectional illustration of the sounding apparatus of Figure 2 (a); Figure 3 (a) is an illustration of a possible sounding apparatus in a coated sounding; Figure 3 (b) is a cross-sectional illustration of the sounding apparatus of Figure 3 (a); Figure 4 (a) is an illustration of an uncoated production range of a sounding using a mode of the sounding apparatus against alternative production flow paths; Figure 4 (b) is a cross-sectional illustration of the sounding apparatus of Figure (a); Figure -5 (a) is an illustration of a possible sounding apparatus in a sounding coated with alternate production flow paths; Figure 5 (b) is an illustration - in cross section of the sounding apparatus of Figure 5 (a). In the following detailed description, the invention will be described along with its preferred embodiments. However, to the extent that the following description is specific to a particular embodiment or a particular use of the invention, it is intended to be illustrative only. Accordingly, the invention is not limited to the specific embodiments described in the following, but rather, the invention includes all alternatives with modifications and equivalents that fall within the true scope of the appended claims. This invention describes a drilling apparatus for directing gravel infiltration. The concept allows an external permeable member or sieve failure, by using support means to retain the gravel and form a stable gravel filter. The apparatus comprises an outer permeable member in the bore with a grooved base pipe section and a perforated base pipe section within the bore. At least a portion of the perforated base pipe section is adjacent to the bore and at least a portion of the grooved base pipe is above the production range. The first and second base pipes provide a three-dimensional surface that defines a fluid flow path through the borehole. Figure 2 (a) illustrates one embodiment of the apparatus in a coated well bore. Typically, as shown in Figure 2 (a), a series of screen joints 10 are placed in a borehole. The uncoated completion 12, as shown in Figure 2 (a), the outer permeable member shown with an upper screen seal 10, comprising a slotted base pipe 17, typically appears near or on the lining shoe 13. The lower outer permeable member shown as a screen joint is typically located in the production range 14 against the productive sand of the uncoated well. The gravel filter material 18 is typically placed in the outer bore to the outer permeable members 15, which may also be referred to as outer permeable media, permeable media and / or outer permeable material. Figure 2 (b) is a cross section of the apparatus of Figure 2 (a) in which elements similar to Figure 2 (a) have been given the same similar uses. As shown in Figure 2 (a), the outer permeable number 15 retains the material 18 in the gravel filter of the base pipe 20. The interior of the base pipe 20 is a three-dimensional surface that defines a defined flow path through the bore .. The interior 25 of the base pipe 20 is sometimes referred to as a production pipe. As shown in Figure 2 (a) at least a portion of a base pipe with perforations 21 is located adjacent to the production gap 14 and at least a portion of the slotted base pipe is located near or on a shoe 13 coated over the production interval 14. Typically, as shown in Figure 2 (a), the slots 16 are vertical but can be horizontal or inclined. Figure 3 (a) is an illustration of the sounding apparatus with a perforated coated well completion range that is similar to the embodiment of Figure 2 (a) 'in which similar elements of Figure 2 (a) are shown. has given similar numbers. In the completion of the coated well, as shown in Figure 3 (a) an upper screen joint 10 is located near or above the upper wall and a lower screen joint 11 is located in the production range 14 with the perforations 21. In different embodiments, there may be more than one upper screen seal near or above the perforations. In addition, there may be more than one lower screen seal under the upper perforation. The lower permeable member or screen joint 11 may be a commercially available gravel filter screen, for example, a wire wrapped screen or mesh screen. In this embodiment, inside the lower sieve joint 11 is the perforated base pipe. The size of the hole of the perforations 21 is preferably large enough to allow the gravel to pass freely therethrough. The upper screen gasket 10 contains a slotted base pipe 17 covered by a permeable medium. The slot openings or slots 16 in the base pipe are sized to be small enough to retain the gravel and large enough to allow the waste sludge and reservoir fines to pass freely through it. Preferably, the number of grooves or densities large enough so that the defined flow friction is comparable to a flow greater than the corresponding friction through the means of the outer permeable member 15. The upper and lower screens can be connected by a coupling 19 in the base pipe so that the fluid can travel inside the base pipe between the two screen joints. In one embodiment, alternative production flow paths can be constructed in the apparatus to produce multiple flow paths in the sounding. The Co-pending North American Provisional Application in No. 60 / 459,151 describes a Mazeflo device where multiple flow paths are provided. The American Provisional Application No. 60/459, 151 is hereby incorporated by reference. An example of a multiple flow path embodiment may be to provide sufficient space between the perforated and grooved base lines and the outer permeable member to form a second fluid flow joint. A flow joint is a separate three-dimensional surface that defines the fluid flow path through the borehole. Figure 4 (a) is an illustration of a multiple flow path apparatus incorporating the Mazeflo design where elements similar to Figure 2 (a) have been given similar numbers. In this embodiment, the outer permeable number 15 is a well screen that is a continuous well screen that provides a second flow path and the joint 41 for the production of fluid through the borehole. The first flow joint or screen 10 for the production of fluid through the slotted and perforated base pipes 17 and 22. In this embodiment, the slots 16 and the perforations 21 provide the permeable connection between the first and second flow joints and the solder joints 19 provide the separate flow section within the second flow joint 41. The slotted and perforated base pipes can also be designed to have solid waterproof sections and allow a variety of flow paths between the first and second flow joints.

Figure 4 (b) is a cross section of Figure 4 (a) where elements similar to Figure 4 (a) have been given similar numbers. As shown in Figure 4 (b) two different flow joints are available in this mode. The flow joint within the base pipe is the first flow joint 43 and the area between the well screen and the base pipe forms the second flow joint 41. Additional flow joints can be created by the placement of additional base pipes, reflectors and walls within the borehole. Additional flow joints can provide redundancy that allow hydrocarbon production despite the sand infiltration of a sand screen failure. Figure 5 (a) is an illustration of a multiple flow path apparatus in a coated sound incorporating the Mazeflo design where elements similar to Figure 4 (a) are developed in similar numbers. In this embodiment at least a portion of the perforated base pipe 22 is adjacent to the production gap 14 and at least a portion of the slotted base pipe 17 is adjacent to the range coated on the top perforation. Figure 5 (b) is a cross section of Figure 5 (a) that is similar to Figure 4 (a) where similar items are given similar numbers. As shown in Figure 5 (b), the continuous sand screen or sand board 10 provides a second flow joint 41 with the interior of the base pipe 20 providing the first flow joint 43. In one embodiment, the apparatus can be installed as a completion device before the gravel filter. After installation of the apparatus, the well is then filtered by gravel using alternative trajectory deviations or conventional gravel filtration technology. The base pipe inside the apparatus can be used as a production pipeline that produces hydrocarbons through the borehole from the underground production interval to the surface of the earth. Example During gravel filtration, a slurry of gravel mix in a carrier fluid is pumped into the annular zone around the upper and lower sieves. As shown in Figure 3 (a), after the carrier fluid escapes to the reservoirs or screens, the gravel filter of a gravel filter material 18 is formed in the annular groove. In coated well completions, the gravel filter is also formed within the boreholes. When the upper screen joint of Figure 3 (a) is almost covered by the annular gravel filter, the pumping pressure increases rapidly due to the area of decrease available for fluid flow. The high grout injection pressure can instantaneously zigzag in the upper screen jacket in the welding area or cause the screen wires (if wire mesh screen is used) to separate due to load and stress erosion cutting / compression. In any case, the gravel will be prevented through the outer environment of the outer permeable member 15. In conventional gravel filter completions, the upper sieve gasket 10 is identical to the lower sieve gasket 11. That is, the failure of the upper screen can result in losing gravel through the perforated tube. In the present invention, the gravel tucked in will be retained by the grooves 16 and will maintain a stable gravel filter and gravel reserve. Since the grooved pipe is much stronger than any welding area of the outer screen means of outer permeable member 15, as well as the grooved pipe has not been exposed to long period of grout erosion, the pressure with high grout content can Suspend until the filling with sand, the end of the gravel filtration work. The North American Patents Nos. 4,945,991 and 5,113,935 disclose alternative path technology branch tubes that can be attached to the upper and lower screen joints. The Patents North American Nos. 4,945,991 and 5,113,935 are incorporated herein by reference. With alternative path technology, maintaining the injection pressure of high slurry content at reduced pumping rate is important to allow the bypass tubes to compress voids in the borehole. A full or relatively vacuum-free gravel filter promotes the durability of the gravel filter. The slots can be placed evenly over the entire base pipe in the upper screen joint. The grooves may also be partly positioned, for example, the lower portion of the base pipe to further improve the mechanical strength in the base pipe of the upper screen joint. The slots are sized to retain the gravel allowing free passage through residual sludge and fines from the deposit. During the production of the well, the dominant flow path can typically be in Figure 2 (a) and in Figure 3 (a) of the production range 14 of uncoated or drilled well to the lower sieve joint 11. Since the upper screen joint 10 is not in primary production flow paths, the groove seal, if it occurs but not likely, will have minimal impact on well productivity. The apparatus may use slotted base pipe in the upper screen joint or all or part of the screen joints on the lining shoe (uncoated well) or over the perforated interval (coated well). The present invention provides a reliable and tolerant apparatus and method for resolving gravel loss caused by damage during gravel filtration. When the apparatus is applied to the field, the current screen processing process and field operation procedures remain unchanged.

Claims (52)

1. CLAIMS 1. A sounding apparatus characterized in that it comprises: a) an outer permeable material; b) a first base battery section where at least a portion of the first section of the base pipe is perforated, the first section of base pipe is within the outer permeable material and at least part of the first section of base pipe is adjacent to a production interval of a probe; c) a second section of base pipe where at least a portion of the second section of base pipe is slotted, the second section of base pipe is within the outer permeable material and on the first section of base pipe, where at least one portion of the second section of base pipe is adjacent to a section without sounding production; d) the first section of base pipe and the second section of base pipe provides a three-dimensional surface defining a defined flow path through the borehole.
2. 2. The sounding apparatus according to claim 1, characterized in that the outer permeable material is a well screen.
3. 3. The sounding apparatus according to claim 1, characterized in that the grooves of the second section of base pipe are at least long enough to allow passage of the sludge and fines from the deposit and small enough to stop the gravel.
4. The sounding apparatus according to claim 1, characterized in that the number of grooves is sufficiently large for the fluid flow pressure through the grooves to be separable and much larger than the friction through outer permeable material .
5. 5. The probing apparatus according to claim 1, further characterized in that it comprises derivations of technology and alternative trajectory coupled to the outer permeable material.
6. The sounding apparatus according to claim 1, characterized in that the sounding is an uncoated well bore and at least part of the second base pipe section is above a skin shoe.
7. The probing apparatus according to claim 1, characterized in that the probing is a well bore covered by a perforated interval and at least part of the second section of base pipe counts on a casing shoe over a perforated interval.
8. 8. A sounding apparatus, characterized in that it comprises: a) an outer permeable member; b) a section of perforated base pipe within the outer permeable member where at least part of the perforated base pipe section is adjacent to a production interval of a sounding; c) a grooved base pipe section within the outer permeable member and over the perforated base pipe section, wherein at least a portion of the grooved base pipe section is adjacent to the non-perforated section of a bore; and d) the perforated and grooved base pipe sections provide a three-dimensional surface defining a fluid flow path through the well.
9. 9. The sounding apparatus according to claim 8, characterized in that an outer permeable member comprises a well screen.
10. The sounding apparatus according to claim 8, characterized in that the groove of the grooved base pipe section is large enough to allow the passage of residual mud and reservoir fines and small enough to retain the gravel.
11. The sounding apparatus according to claim 8, characterized in that the number of grooves is sufficiently long for the fluid flow friction through the grooves to be comparable or not much larger than the friction through the member. permeable exterior.
12. 12. The sounding apparatus according to claim 8, further characterized in that it comprises alternate path technology shunts in the outer permeable member.
13. 13. The sounding apparatus according to claim 8, characterized in that the sounding is an uncoated well bore and at least part of the second base pipe section is above the lining shoe over a production interval.
14. The probing apparatus according to claim 8, characterized in that the production interval is a well bore lined with a perforated interval at least part of the second section of base pipe is above a lining shoe on a perforated interval.
15. 15. A sounding characterized in that it comprises: a) an outer permeable member in the sounding; b) a first section of base pipes. with at least a portion of the first section of base pipe being perforated by the first section of base pipe being within the outer permeable member and at least part of the first section of base pipe being adjacent to a production gap; c) a second section of base pipe with at least a portion of the second section of base pipe, "the second section of base pipe within the outer permeable member and on the second section of base pipe, where at least a portion of the second pipe-base section is adjacent to a section without sounding production
16. 16. The sounding according to claim 15, characterized in that the outer permeable member comprises a well screen
17. 17. The sounding according to claim 15 , characterized in that the groove of the second section of base pipe is large enough to allow passage of the residual sludge and passage of deposit fines and small enough to retain gravel
18. 18. The sounding according to claim 15, characterized in that the number of grooves is large enough for fluid flow friction through the grooves to be comparable or non-comparable more durable than friction through the outer permeable member.
19. 19. The sounding according to claim 15, further characterized in that it comprises alternative technology and trajectory derivations associated with the outer permeable member.
20. 20. The sounding according to claim 15, characterized in that the sounding is an uncoated well bore and at least part of the second base pipe well section is above a lining shoe.
21. 21. The sounding according to claim 15, characterized in that the sounding is an uncoated well bore and at least part of the second well-section of base pipe is above a cladding shoe by perforated interval.
22. 22. A sounding characterized in that it comprises: a) a sounding where the sounding comprises at least one perforated section within the hydrocarbon production range or at least one non-perforated section over at least one perforated section; b) an outer permeable member in the sounding; c) a perforated pipe section within the outer permeable member, wherein at least part of the perforated base pipe section is adjacent to at least one perforated section. d) a grooved base pipe section within the outer permeable member and over the perforated base pipe section, wherein at least a portion of the grooved base pipe section is adjacent to at least one non-perforated section; and e) the perforated and grooved base pipe sections provide a three dimensional surface and define a defined flow path through the borehole.
23. 23. The poll in accordance with the claim 22, characterized in that the outer permeable member is a well screen.
24. 24. The sounding according to claim 22, characterized in that the groove of the grooved base pipe section are large enough to allow the passage of residual mud and reservoir fines and small enough to retain the gravel.
25. 25. The sounding according to claim 22, characterized in that the number of grooves in the grooved base pipe section is sufficiently large for fluid flow friction through the groove to be at least equal to the friction a through the outer permeable member.
26. 26. The sounding according to claim 22, further characterized in that it comprises derivations of technology and alternative trajectory in the outer permeable member.
27. 27. The sounding according to claim 22, characterized in that the sounding is an uncoated well bore and at least part of the second base pipe section is above a skin shoe.
28. 28. The sounding according to claim 22, characterized in that the sounding is a well bore coated in a perforated gap and at least part of the second base pipe section is above a lining shoe over the perforated gap.
29. 29. A method for completing a well, characterized in that it comprises: a) providing probing apparatus comprising an outer permeable member, a first section of base pipe with at least a portion of the first section of base pipe being drilled and disposed within of the outer permeable means, and a second section of base pipe where at least a portion of the second base pipe is being grooved, the second base pipe section disposed within the outer permeable member and on the first base pipe section; and b) arranging the sounding apparatus in a sounding where at least part of the first base pipe section is adjacent to a production range and at least part of the second base pipe section is adjacent to a section without sounding production. .
30. 30. The method according to claim 29, further characterized in that it comprises filtering with gravel the first section of base pipe and at least a portion of the second section of base pipe within a sounding.
31. 31. The method according to claim 29, further characterized in that it comprises producing hydrocarbons apart from probing.
32. 32. The method of compliance with the claim 29, characterized because therefore. less part of the first section of base pipe is adjacent to the production range that is coated with perforations and at least a portion of the second section of base pipe is adjacent to the non-perforated section of sounding.
33. 33. The method according to claim 29, characterized in that the outer permeable means is a well screen.
34. 34. The method according to claim 29, characterized in that the second base pipe section has grooves that are large enough to allow the passage of residual mud and reservoir fines small enough to hold gravel.
35. 35. The method according to claim 29, characterized in that the number of grooves in the second section of base pipe is sufficiently large for the fluid flow friction through the grooves to be equal to the friction through the medium permeable exterior.
36. 36. The method according to claim 29, further characterized in that it comprises derivations of technology and alternative trajectory in the other permeable medium.
37. 37. The method according to the claim 29, characterized in that the sounding is a well-cased sounding and at least part of the second section of base pipe is above a cladding shoe.
38. 38. The method of conformity with claim 29, characterized in that the sounding is a well bore coated with a perforated gap and at least part of the second base pipe section is above a lining shoe over the perforated gap. .
39. 39. A sounding apparatus characterized in that it comprises: a perforated base pipe, wherein at least a portion of the perforated base pipe disposed adjacent a production interval of a sounding; and a slotted base pipe coupled to the perforated base pipe and disposed closer to the sounding surface than the perforated base pipe.
40. 40. The sounding apparatus according to claim 39, characterized in that at least a portion of the grooved base pipe is disposed adjacent to a gap without sounding production.
41. 41. The sounding apparatus according to claim 39, characterized in that a first outer permeable means coupled to the perforated base pipe and a second outer permeable means coupled to the grooved base pipe.
42. 42. The sounding apparatus according to claim 41, characterized in that the first outer permeable member and the second outer permeable means comprise well screens.
43. 43. The sounding apparatus according to claim 41, characterized in that the number of grooves in the grooved base pipe are configured to maintain a comparable friction of the fluid flow for the fluid through the groove and through the outer permeable means.
44. 44. The probing apparatus according to claim 41, further characterized in that it comprises alternative path technology shunts associated with the outer permeable means.
45. 45. The sounding apparatus according to claim 39, characterized in that the grooves of the grooved base pipe are configured to allow the passage of residual mud and reservoir fines and small enough to hold gravel.
46. 46. The sounding apparatus according to claim 39, characterized in that the perforated base pipe is used to produce hydrocarbons from the sounding.
47. 47. A method characterized in that it comprises: arranging at least a portion of a perforated base pipe adjacent to a sounding production interval; and arranging a grooved base pipe in the borehole, where the grooved base pipe is coupled to the perforated base pipe and placed closer to the bore surface than the perforated base pipe.
48. 48. The method according to claim 47, characterized in that at least a portion of the grooved base pipe is installed adjacent to the interval without sounding production.
49. 49. The method of compliance with the claim 47, characterized in that it comprises coupling a first permeable means external to the perforated base pipe and a second permeable means external to the grooved base pipe.
50. 50. The method according to claim 47, characterized in that it comprises gravel filtration of the perforated base pipe and at least a portion of the grooved base pipe within the borehole.
51. 51. The method according to claim 47, characterized in that it comprises producing hydrocarbons from the borehole through the perforated base pipe and a slotted base pipe.
52. 52. The method according to claim 47, further characterized in that it comprises derivations of alternative technology coupled to the perforated base pipe of the slotted base pipe.