USH1675H - Hybrid capsule charge - Google Patents
Hybrid capsule charge Download PDFInfo
- Publication number
- USH1675H USH1675H US08/684,719 US68471996A USH1675H US H1675 H USH1675 H US H1675H US 68471996 A US68471996 A US 68471996A US H1675 H USH1675 H US H1675H
- Authority
- US
- United States
- Prior art keywords
- high temperature
- capsule
- charge
- charges
- tripicrylbenzene
- 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.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/04—Compositions containing a nitrated organic compound the nitrated compound being an aromatic
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
Definitions
- the present invention relates generally to initiators for use with perforating charges, such as are used in oil and gas wells; and more specifically relates to high temperature initiators for use with high temperature explosives in capsule charges suitable for use in down hole perforating guns.
- Capsule type charges are generally capable of superior performance when compared to the equivalent charge shot in a thru-tubing gun. Capsule charges are well known in the art of well bore perforation. Typical capsule charge designs are illustrated in U.S. Pat. Nos. 3,128,702; 2,734,456; and 3,048,102, which are hereby incorporated by reference. In each instance, the capsule charge denotes a fully sealed or encapsulated shaped charge. A plurality of capsule charges are typically suspended on a charge carrier comprised of metal wire or strips. The use of these types of charge carriers is often selected to permit the carrier holding the capsule charges to be passed through a restricted opening in the well bore. The carrier then expands to properly position the charges.
- the charges In order to be effective, the charges must be fully encapsulated to prevent exposure of the primary explosive to well bore fluids and pressures. This requires that the capsule charges be detonated by a means external to the sealed capsule. This is typically accomplished by means of a detonating cord positioned adjacent to the rear of the charge capsule. See, for example, U.S. Pat. No. 4,739,839, which is hereby incorporated by reference, having capsule charge 24 and a detent at the rear 56 designed to receive detonating cord 26.
- there are problems encountered when attempting to use capsule charges in high temperature environments i.e., in excess of +350 F.
- the commercially available high temperature explosives are not sensitive enough to be initiated across the steel barrier which is necessary to maintain the charges integrity under pressure.
- a high temperature capsule charge will utilize a commercially high temperature explosive, such as PYX.
- PYX a commercially high temperature explosive
- the present invention utilizes an exotic secondary initiating compound as a booster in the capsule charge explosive area adjacent to the bulkhead.
- Two booster compounds have demonstrated a satisfactory response to the detonating cord impact and the ability to initiate PYX.
Abstract
An improved capsule-type charge for use in perforating high temperature production zones in oil or gas wells is disclosed. The improvement consists of using a secondary initiating compound as an initiator, such as 1,3,5-Trinitro-2,4,6-Tripicrylbenzene or 2,2',2",4,4',4",6,6',6",-Nonanitroterphenyl. These initiators work well with commercially available high temperature explosives, such as PYX.
Description
The present invention relates generally to initiators for use with perforating charges, such as are used in oil and gas wells; and more specifically relates to high temperature initiators for use with high temperature explosives in capsule charges suitable for use in down hole perforating guns.
Capsule type charges are generally capable of superior performance when compared to the equivalent charge shot in a thru-tubing gun. Capsule charges are well known in the art of well bore perforation. Typical capsule charge designs are illustrated in U.S. Pat. Nos. 3,128,702; 2,734,456; and 3,048,102, which are hereby incorporated by reference. In each instance, the capsule charge denotes a fully sealed or encapsulated shaped charge. A plurality of capsule charges are typically suspended on a charge carrier comprised of metal wire or strips. The use of these types of charge carriers is often selected to permit the carrier holding the capsule charges to be passed through a restricted opening in the well bore. The carrier then expands to properly position the charges.
In order to be effective, the charges must be fully encapsulated to prevent exposure of the primary explosive to well bore fluids and pressures. This requires that the capsule charges be detonated by a means external to the sealed capsule. This is typically accomplished by means of a detonating cord positioned adjacent to the rear of the charge capsule. See, for example, U.S. Pat. No. 4,739,839, which is hereby incorporated by reference, having capsule charge 24 and a detent at the rear 56 designed to receive detonating cord 26. However, there are problems encountered when attempting to use capsule charges in high temperature environments (i.e., in excess of +350 F.). Namely, the commercially available high temperature explosives are not sensitive enough to be initiated across the steel barrier which is necessary to maintain the charges integrity under pressure.
Therefore, what is needed is an initiator that works well with capsule charges at high temperatures.
The above stated objective is met by the inventive use of exotic secondary initiating compounds as boosters. These secondary boosters have been used successfully in capsule charges to initiate commercially available high temperature explosives.
In the preferred embodiment, a high temperature capsule charge will utilize a commercially high temperature explosive, such as PYX. As noted above, at temperatures in excess of 350° F., it may be difficult to initiate PYX across the metal bulkhead utilizing detonating cord. See U.S. Pat. No. 4,739,839, FIG. 5, 54.
Accordingly the present invention utilizes an exotic secondary initiating compound as a booster in the capsule charge explosive area adjacent to the bulkhead. Two booster compounds have demonstrated a satisfactory response to the detonating cord impact and the ability to initiate PYX.
The preferred booster compounds that have been employed thus far and have yielded the best results are:
1. 1,3,5-TRINITRO-2,4,6-TRIPICRYLBENZENE
2. 2,2'2",4,4', 4",6,6', 6",-NONANITROTERPHENYL
These initiators have been successfully used to initiate the commercially available high temperature explosive, PYX.
Claims (2)
1. Secondary booster compound for use with high temperature explosives in capsule charges, said secondary booster compound being selected from a group consisting of:
1,3,5-Trinitro-2,4,6-Tripicrylbenzene, and,
2,2',2",4,4',4",6,6',6",-Nonanitroterphenyl.
2. A method of perforating a high temperature production zone of a oil or gas well, comprising:
inserting at least one capsule charge into said well proximate said zone, said charge comprising:
a high temperature explosive; and,
a booster selected from the group consisting of:
1,3,5-Trinitro-2,4,6-Tripicrylbenzene; and,
2,2',2",4,4',4",6,6',6", -Nonanitroterphenyl; and,
detonating said charge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/684,719 USH1675H (en) | 1996-07-22 | 1996-07-22 | Hybrid capsule charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/684,719 USH1675H (en) | 1996-07-22 | 1996-07-22 | Hybrid capsule charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USH1675H true USH1675H (en) | 1997-09-02 |
Family
ID=24749275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US08/684,719 Abandoned USH1675H (en) | 1996-07-22 | 1996-07-22 | Hybrid capsule charge |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | USH1675H (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2794523A1 (en) * | 2000-04-11 | 2000-12-08 | Schlumberger Services Petrol | Booster for relaying detonation train from detonating cord to another booster comprises explosive and shell housing |
| FR2813666A1 (en) * | 1999-04-16 | 2002-03-08 | Schlumberger Services Petrol | EXPLOSIVE RELAY |
| RU2699145C1 (en) * | 2016-05-09 | 2019-09-03 | Динаэнергетикс Гмбх Унд Ко. Кг | High-temperature fuse |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755471A (en) * | 1963-10-31 | 1973-08-28 | Us Navy | Nonanitroterphenyl |
| US4739839A (en) * | 1986-12-19 | 1988-04-26 | Jet Research Center, Inc. | Capsule charge perforating system |
| US4832134A (en) * | 1987-12-07 | 1989-05-23 | Jet Research Center, Inc. | Shaped charge assembly with retaining clip |
| US4861924A (en) * | 1988-08-25 | 1989-08-29 | Jet Research Center, Inc. | 1,3,5-trinitro-2,4,6-tripicrylbenzene |
| US4998477A (en) * | 1990-02-14 | 1991-03-12 | Halliburton Logging Services, Inc. | Detonation transfer apparatus for initiating detonation of an insensitive detonating cord utilizing an initiating compound, flyer and shock reflector |
| US5107929A (en) * | 1990-08-09 | 1992-04-28 | Schlumberger Technology Corporation | Drop off method for perforating gun capsule charge carriers |
-
1996
- 1996-07-22 US US08/684,719 patent/USH1675H/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3755471A (en) * | 1963-10-31 | 1973-08-28 | Us Navy | Nonanitroterphenyl |
| US4739839A (en) * | 1986-12-19 | 1988-04-26 | Jet Research Center, Inc. | Capsule charge perforating system |
| US4832134A (en) * | 1987-12-07 | 1989-05-23 | Jet Research Center, Inc. | Shaped charge assembly with retaining clip |
| US4861924A (en) * | 1988-08-25 | 1989-08-29 | Jet Research Center, Inc. | 1,3,5-trinitro-2,4,6-tripicrylbenzene |
| US4998477A (en) * | 1990-02-14 | 1991-03-12 | Halliburton Logging Services, Inc. | Detonation transfer apparatus for initiating detonation of an insensitive detonating cord utilizing an initiating compound, flyer and shock reflector |
| US5107929A (en) * | 1990-08-09 | 1992-04-28 | Schlumberger Technology Corporation | Drop off method for perforating gun capsule charge carriers |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2813666A1 (en) * | 1999-04-16 | 2002-03-08 | Schlumberger Services Petrol | EXPLOSIVE RELAY |
| DE10018872B4 (en) * | 1999-04-16 | 2012-01-19 | Schlumberger Technology B.V. | transfer charge |
| FR2794523A1 (en) * | 2000-04-11 | 2000-12-08 | Schlumberger Services Petrol | Booster for relaying detonation train from detonating cord to another booster comprises explosive and shell housing |
| RU2699145C1 (en) * | 2016-05-09 | 2019-09-03 | Динаэнергетикс Гмбх Унд Ко. Кг | High-temperature fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: HALLIBURTON COMPANY, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BARKER, JAMES M.;WALKER, JERRY L.;RIGGS, ROBERT S.;REEL/FRAME:008272/0761 Effective date: 19961203 |
|
| STCF | Information on status: patent grant |
Free format text: PATENTED CASE |