GB2394763A - Debris-free perforating system comprising caseless shaped charge with densified explosive - Google Patents
Debris-free perforating system comprising caseless shaped charge with densified explosive Download PDFInfo
- Publication number
- GB2394763A GB2394763A GB0329787A GB0329787A GB2394763A GB 2394763 A GB2394763 A GB 2394763A GB 0329787 A GB0329787 A GB 0329787A GB 0329787 A GB0329787 A GB 0329787A GB 2394763 A GB2394763 A GB 2394763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- explosive
- perforating system
- debris
- free perforating
- debris free
- 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
- 239000002360 explosive Substances 0.000 title claims abstract description 41
- 239000011230 binding agent Substances 0.000 claims abstract description 21
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000012255 powdered metal Substances 0.000 claims abstract description 6
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 239000011133 lead Substances 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 3
- 239000010937 tungsten Substances 0.000 claims abstract description 3
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004634 thermosetting polymer Substances 0.000 claims description 4
- -1 Kel- F-800 Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 239000004811 fluoropolymer Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- 229920009638 Tetrafluoroethylene-Hexafluoropropylene-Vinylidenefluoride Copolymer Polymers 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims 1
- 238000011068 loading method Methods 0.000 description 17
- 238000005474 detonation Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UZGLIIJVICEWHF-UHFFFAOYSA-N octogen Chemical compound [O-][N+](=O)N1CN([N+]([O-])=O)CN([N+]([O-])=O)CN([N+]([O-])=O)C1 UZGLIIJVICEWHF-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- YSSXHRVRZWIAKV-UHFFFAOYSA-N pyx explosive Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1NC1=NC(NC=2C(=CC(=CC=2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)=C([N+]([O-])=O)C=C1[N+]([O-])=O YSSXHRVRZWIAKV-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YSIBQULRFXITSW-OWOJBTEDSA-N 1,3,5-trinitro-2-[(e)-2-(2,4,6-trinitrophenyl)ethenyl]benzene Chemical compound [O-][N+](=O)C1=CC([N+](=O)[O-])=CC([N+]([O-])=O)=C1\C=C\C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O YSIBQULRFXITSW-OWOJBTEDSA-N 0.000 description 1
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 1
- 229920012375 Elvamide® 8061 Polymers 0.000 description 1
- 229920012373 Elvamide® 8063 Polymers 0.000 description 1
- 241000680172 Platytroctidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001227 electron beam curing Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 229920003249 vinylidene fluoride hexafluoropropylene elastomer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
- C06B45/04—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive
- C06B45/06—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component
- C06B45/10—Compositions or products which are defined by structure or arrangement of component of product comprising solid particles dispersed in solid solution or matrix not used for explosives where the matrix consists essentially of nitrated carbohydrates or a low molecular organic explosive the solid solution or matrix containing an organic component the organic component containing a resin
- C06B45/105—The resin being a polymer bearing energetic groups or containing a soluble organic explosive
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/117—Shaped-charge perforators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
- F42B1/02—Shaped or hollow charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Thermal Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Paper (AREA)
Abstract
A perforating system, eg for perforating wellbore casings, comprises a caseless shaped charge with an explosive blend 12 including inert heavy material such as a powdered metal. The metal may be tungsten, iron, copper or lead. A thermoplastic, thermosetting or thermoplastic/thermosetting binder may be added.
Description
GB 2394763 A continuation (74) Agent and/or Address for Service: Sensa
Gamma House, Enterprise Road, Chilworth Science Park, SOUTHAMPTON, Hampshire, S016 7NS, United Kingdom
DEBRIS FREE PERFORATING SYSTEM
FIELD OF THE INVENTION
The subject matter of the present invention relates to a debris free perforating system.
More specifically, the subject matter of the present invention relates to reducing the amount of debris generated during perforating with shaped charges.
BACKGROUND OF THE INVENTION
In drilling operations, the drilled hole is often lined with a casing to prevent the earth from filling the hole. In order for the surrounding fluid to enter the drilled hole, the well casing must be perforated. Such operation is typically performed by a perforating gun loaded with one or more shaped charges.
Conventional perforating guns produce significant debris upon detonation of the shaped charges. The generated debris can enter the well fluid and become entrained in the well fluid. As the debris is carried by the well fluid, it can complicate down stream processing of the well fluids by clogging filters and jamming pumps, for example.
Extensive research on hollow carrier perforating guns indicates that the majority of gun debris is generated by the shaped charge cases. In fact, roughly 80% of all gun debris is attributed to the charge cases. The remaining debris is attributed to the charge case jackets and the loading tubes.
There exists, therefore, a need for a debris free perforating system that reduces or eliminates the debris generated upon detonation of the shaped charges.
SUMMARY
According to the invention, a debris free perforating system comprises a caseless shaped charge comprising an explosive blended with an inert heavy material.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a cross-sectional view of a typical shaped charge, loading tube, and perforating gun.
Figure 2 is a perspective view of a typical shaped charge and loading tube.
Figure 3 is a perspective view of a loading tube being inserted into a perforating gun.
Figure 4 illustrates an embodiment of the debris free perforating system in which the shaped charge does not have a case.
Figure 5 illustrates a cross-sectional view of an embodiment of the debris free perforating system having a solid loading tube.
DETAILED DESCRIPTION
Figure 1 provides an illustration of a typical shaped charge, indicated generally as 1, used for perforating a well casing. Typical shaped charges for use in perforating guns are discussed in U.S. Pat. No. 4,724, 767 to Aseltine issued Feb. 16, 1988; U.S. Pat. No. 5,413,048 to Werner et al. issued May 9, 1995; U.S. Pat. No. 4,669,384 to Chawla et al. issued Jun. 2, 1987; and again in U.S. Pat. No. 5,597,974 to Voreck, Jr. et al. issued Jan. 28, 1997. The shaped charge 1 includes a case 10, a main body of explosive material 12, which in the past has been, for example, RDX, 1,3,5,7-tetranitro octahydro-1,3,5,7-tetrazocine (HMX), 2,6- bis (Picrylamino)-3,5-dinitropyridine (PYX), or 2,2',4,4',6- hexanitrostilbene (HNS) packed against the inner wall of the case 10, a primer 13 disposed adjacent the main body of explosive 12 that is adapted to detonate the main body of explosive 12 when the primer 13 is detonated, and a liner 14 lining the primer 13 and the main body of explosive material 12. The liner 14 acts to maintain the shape of the explosive to assure proper propagation of the detonation. A detonating cord 20 contacts the case 10 of the shaped charge 1 at a point nearest the apex of the liner 14 of the charge. When a detonation wave propagates within the detonating cord 20, the detonation wave will detonate the primer 13. When the primer 13 is detonated, the detonation of the primer 13 will further detonate the main body of explosive 12 of the charge 1. In response to the detonation of the main body of explosive 12, the liner 14 will form a jet that will propagate along a longitudinal axis of the shaped charge 1. The jet will perforate a formation penetrated by the wellbore.
In a typical shaped charge 1, the case 10 greatly contributes to the penetration performance of the shaped charge 1. The case 10 (typically steel or similar) provides substantial inertial confinement, thereby enhancing the proportion of explosive energy transferred to the collapsing liner 14, and hence the penetrating jet.
Several shaped charges 1 may be spatially arranged in a pattern (a spiral pattern, for example) in a device called a perforating gun. The shaped charges 1 are ballistically connected via the detonating cord 20 or some other means. In general, perforating
guns are either capsule guns, which are essentially a metallic strip or similar device onto which the shaped charges 1 are attached, or hollow carrier guns as shown in Figures 1-3.
For a typical hollow carrier gun, one or more shaped charges 1 are housed within a loading tube 22 for transport. The loading tube 22 can house the shaped charges 1 at desired orientations, or in a linear fashion. A jacket 24 is used to both secure the shaped charges 1 to the loading tube 22 and to maintain the orientation of the shaped charges 1. Once the loading tube 22 is ready for delivery downhole, a perforating gun 30 is used to carry the loading tube 22 and housed shaped charges 1.
Conventionally, as shown in Figs. 2 and 3, the shaped charges 1 and jackets 24 are inserted into the loading tube 22 until the jackets 24 shoulder against the loading tube shoulders 23. Once all of the shaped charges 1 are secured, the loading tube 22 is inserted into the interior of the perforating gun 30. The gun 30 then transports the shaped charges 1 downhole to the desired depth of perforation.
Figure 4 illustrates one embodiment of the debris free perforating system in which the shaped charge 1 does not have a case. Because, as discussed above, a typical shaped charge relies in part on its metal case to aid in perforating the well casing, it is desirable to use an explosive 12 that compensates for the elimination of the case. In one embodiment of the present invention, the caseless shaped charge 1 shown in Fig. 4 contains a larger amount of explosive 12. For example, the caseless shaped charge 1 may contain 2 to 3 times the explosive 12 as similarly sized metallic cased charges to obtain equivalent penetration performance. In another embodiment of the caseless shaped charge 1 shown in Figure 4, the explosive 12 comprises a densified explosive 12 that possesses the beneficial confinement properties usually afforded by the case. The densified explosive 12 is formulated to not expand as quickly, therefore increasing the duration of its primary pulse. The densified explosive 12 delivers more of its energy to the liner 14 during the primary pulse, and therefore relies less on subsequent sustained impulse.
In one embodiment, the explosive 12 is densified by blending it with some inert heavy materials such as powdered metals. The inserted powdered metals can include tungsten, iron, copper, and lead, for example. The resulting blend provides more mass at the detonation front, which delays expansion due to the explosive cloud mass, and hence increases primary impulse detonation.
In a typical shaped charge, the case and liner maintain the shape and the
integrity of the explosives. As discussed above, in the embodiment of the debris free perforating system shown in Fig. 4, the shaped charge 1 does not have a case. During transport, the liner 14 acting alone is generally unable to maintain the shape of the explosive 12. Thus, alternative methods of maintaining the integrity of the explosive 12 must be incorporated. One method of maintaining the integrity of the explosive 12 in the caseless shaped charge l is to use a solid loading tube 36, as shown in cross-section in Fig. 5. Hollow cavities 38 formed in the solid loading tube 36 provide housings and support for the shaped charges 1.
Suitable materials for the solid loading tube 36 include low density plastic materials, Styrofoam_ or paper, for example. Typically, the detonation of the shaped charge 1 will incinerate the solid loading tube 36.
Referring back to Fig. 4, yet another method of maintaining the integrity of the explosive 12 in a caseless charge 1 is to use a suitable binder that will not melt or slump when exposed to the desired operating temperature. For lower temperature applications (generally below 250 OF (121 C)), suitable binders can be thermoplastics such as Viton_, Kel-F800, THV, Polyethylene, Nylon, or PVC, for example. Other suitable binders include any polymeric material having a service temperature meeting or exceeding the desired operating temperature of the application.
For high temperature applications, thermosetting plastic binders can be used as the explosive binder. Typical thermosetting plastics do not have a melting point, but do decompose when exposed to high temperatures. In one embodiment of using a thermosetting plastic binder, the explosive 12 is of the castible type where the binder is in a liquid state during production. The explosive 12 is cast in a mold of the desired shape, and the binder reacts to form a crosslinked non-melting plastic. Suitable plastic systems for castible explosives include polyesters, polyurethanes, polyamides, polyimides, and epoxies, for example. In another embodiment of using a thermosetting plastic binder, the explosive 12 is of the pressed type.
Another embodiment of a suitable binder for the explosive 12 is a thermoplastic-
thermosetting polymer useful as a binder for pressed or extrudable explosive. In this embodiment, the thermoplastic-thermosetting binder comprises Elvamide_ 8061 or 8063 blended with a stoichiometric amount of an epoxy resin, such as Epon_ 828. The blend is then cured with a latent curing agent such as Dicyandiamide (DICY), for example.
The cured blend can then be coated on to the explosive 12 using the water slurry method.
Usually a 2 to 10 percent by weight coating is applied. When pressed at 212-250 F (100-
121 C), the binder cures to form a non-melting thermoses polymer stable to 400 F (204 C).
Alternatively, the explosive formulation can be pressed at room temperature and cured in an oven at elevated temperature.
Another embodiment of a thermoplastic-thermosetting binder for use in a pressed or extruded explosive is a fluoropolymer such as Dupont Viton_, 3M Fluorel (RTM) 2175, or Dyneon (RTM) THV, for example. These fluoropolymers can be formulated with RDX or HMX using the water slurry process. The resulting explosive molding powder is pressed to shape using standard explosive pressing technology. In their natural state, these materials are thermoplastics and will soften and slump at temperatures exceeding approximately 250 F (121 C). However, exposure to electron radiation (so called e-beams) causes the polymer to cross-link and cure by well known mechanisms. E-beam curing increases the glass transition temperature and melting points of these polymers. Even in instances where the e-beam only cures the skin of the polymer, the skin is sufficiently toughened to prevent deformation of the caseless shaped charge 1 exposed to elevated temperatures.
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the scope of the invention, and all such are to be intended to be included within the scope of the following claims.
Claims (11)
1. A debris free perforating system, comprising a caseless shaped charge comprising an explosive blended with an inert heavy material.
2. The debris free perforating system of claim 1, wherein the inert heavy material comprises a powdered metal.
3. The debris free perforating system of claim 2, wherein the powdered metal comprises tungsten.
4. The debris free perforating system of claim 2, wherein the powdered metal comprises a metal selected from iron, copper and lead.
5. The debris free perforating system of claim 1, wherein the explosive comprises a thermoplastic binder.
6. The debris free perforating system of claim 5, wherein the thermoplastic binder comprises a binder selected from a hexafluoropropylene-vinylidene fluoride co-polymer, Kel-
F-800, THV, polyethylene, nylon and PVC.
7. The debris free perforating system of claim 1, wherein the explosive comprises a thermosetting plastic binder.
8. The debris free perforating system of claim 7, wherein the thermosetting plastic binder comprises a binder selected from polyesters, polyurethanes, polyamides, polyimides and epoxies.
9. The debris free perforating system of claim 1, wherein the explosive comprises a thermoplastic-thermosetting polymer.
10. The debris free perforating system of claim 9, wherein the thermoplastic-
thermosetting polymer comprises a polymer cured from a blend of a multipolymer
nylon and an epoxy resin.
11. The debris free perforating system of claim 97 wherein the thermoplastic-
thermosetting polymer comprises a fluoropolymer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29489401P | 2001-05-31 | 2001-05-31 | |
| US10/157,609 US20020189482A1 (en) | 2001-05-31 | 2002-05-29 | Debris free perforating system |
| GB0212621A GB2380536B (en) | 2001-05-31 | 2002-05-31 | Debris-free perforating system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0329787D0 GB0329787D0 (en) | 2004-01-28 |
| GB2394763A true GB2394763A (en) | 2004-05-05 |
| GB2394763B GB2394763B (en) | 2004-07-28 |
Family
ID=32073907
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0329787A Expired - Fee Related GB2394763B (en) | 2001-05-31 | 2002-05-31 | Debris free perforating system |
| GB0329741A Expired - Fee Related GB2394762B (en) | 2001-05-31 | 2002-05-31 | Debris free perforating system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0329741A Expired - Fee Related GB2394762B (en) | 2001-05-31 | 2002-05-31 | Debris free perforating system |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB2394763B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7810431B2 (en) | 2007-10-26 | 2010-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Explosive charge |
| US7942098B2 (en) | 2006-08-29 | 2011-05-17 | Schlumberger Technology Corporation | Loading tube for shaped charges |
| US8156871B2 (en) | 2007-09-21 | 2012-04-17 | Schlumberger Technology Corporation | Liner for shaped charges |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8347962B2 (en) | 2005-10-27 | 2013-01-08 | Baker Hughes Incorporated | Non frangible perforating gun system |
| US9062534B2 (en) | 2006-05-26 | 2015-06-23 | Baker Hughes Incorporated | Perforating system comprising an energetic material |
| EP2021578B1 (en) * | 2006-05-26 | 2020-02-26 | Owen Oil Tools LP | Perforating methods and devices for high wellbore pressure applications |
| WO2008069820A1 (en) * | 2006-12-09 | 2008-06-12 | Bond Lesley O | Reactive stimulation of oil and gas wells |
| FR2936796B1 (en) * | 2008-10-06 | 2010-12-10 | Eurenco France | DENSE EXPLOSIVE LOAD AND DECOUPAGE DETONATING CORDE |
| FR2936795B1 (en) * | 2008-10-06 | 2011-01-07 | Eurenco France | DENSITIZED EXPLOSIVE COMPOSITIONS, DENSATED EXPLOSIVE LOADS AND AMMUNITION COMPRISING THE SAME |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1350143A (en) * | 1962-12-14 | 1964-01-24 | Schlumberger Prospection | Shaped charges for oil drilling |
| US3650212A (en) * | 1970-05-11 | 1972-03-21 | Western Dynamics Inc | Economical, tough, debris-free shaped charge device and perforating gun assembly employing same |
| US4955939A (en) * | 1983-03-02 | 1990-09-11 | The United States Of America As Represented By The Secretary Of The Navy | Shaped charge with explosively driven liquid follow through |
| US6062310A (en) * | 1997-03-10 | 2000-05-16 | Owen Oil Tools, Inc. | Full bore gun system |
-
2002
- 2002-05-31 GB GB0329787A patent/GB2394763B/en not_active Expired - Fee Related
- 2002-05-31 GB GB0329741A patent/GB2394762B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7942098B2 (en) | 2006-08-29 | 2011-05-17 | Schlumberger Technology Corporation | Loading tube for shaped charges |
| US8156871B2 (en) | 2007-09-21 | 2012-04-17 | Schlumberger Technology Corporation | Liner for shaped charges |
| US7810431B2 (en) | 2007-10-26 | 2010-10-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Explosive charge |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2394763B (en) | 2004-07-28 |
| GB0329741D0 (en) | 2004-01-28 |
| GB2394762A (en) | 2004-05-05 |
| GB2394762B (en) | 2004-09-01 |
| GB0329787D0 (en) | 2004-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020189482A1 (en) | Debris free perforating system | |
| US7712416B2 (en) | Apparatus and method for penetrating oilbearing sandy formations, reducing skin damage and reducing hydrocarbon viscosity | |
| CA2664727C (en) | Improved oil well perforator liners | |
| US7987911B2 (en) | Oil well perforators | |
| US7913761B2 (en) | System and method for enhanced wellbore perforations | |
| US8701767B2 (en) | Boron shaped charge | |
| CA2409281C (en) | Sintered tungsten liners for shaped charges | |
| CA2718957C (en) | Devices and methods for perforating a wellbore | |
| US7721649B2 (en) | Injection molded shaped charge liner | |
| US6564718B2 (en) | Lead free liner composition for shaped charges | |
| CA2409846C (en) | Coated metal particles to enhance shaped charge | |
| US11340047B2 (en) | Shaped charge liner, shaped charge for high temperature wellbore operations and method of perforating a wellbore using same | |
| US20060266551A1 (en) | Shaped Charges for Creating Enhanced Perforation Tunnel in a Well Formation | |
| US10480295B2 (en) | Jet perforating device for creating a wide diameter perforation | |
| CN101479559A (en) | Perforating system comprising an energetic material | |
| GB2394763A (en) | Debris-free perforating system comprising caseless shaped charge with densified explosive | |
| WO2014123510A1 (en) | Methods of controlling the dynamic pressure created during detonation of a shaped charge using a substance | |
| CA2409849C (en) | Shaped charges having enhanced tungsten liners | |
| CA2440306A1 (en) | Oil well perforator liner with high proportion of heavy metal | |
| WO2002075099A2 (en) | Heavy metal oil well perforator liner | |
| CA2335694A1 (en) | Oilwell perforator having metal coated high density metal power liner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20120531 |