IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0377148
(2011-04-29)
|
등록번호 |
US-8881816
(2014-11-11)
|
국제출원번호 |
PCT/US2011/034690
(2011-04-29)
|
§371/§102 date |
20111208
(20111208)
|
국제공개번호 |
WO2012/148429
(2012-11-01)
|
발명자
/ 주소 |
- Glenn, Timothy S.
- Rodgers, John P.
- Nelson, Jeff A.
- Burleson, John D.
- Serra, Marco
- Hales, John H.
|
출원인 / 주소 |
- Halliburton Energy Services, Inc.
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
127 |
초록
▼
A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation to
A perforation tool assembly is provided. The perforation tool assembly comprises an energy train, a first perforation gun, and a second perforation gun. The energy train comprises a moderator to reduce the speed of propagation of a detonation in a direction parallel to the axis of the perforation tool assembly. The first perforation gun comprises a plurality of explosive charges coupled to a first portion of the energy train. The second perforation gun comprises a plurality of explosive charges coupled to a second portion of the energy train, wherein the second portion of the energy train is coupled to the first portion of the energy train.
대표청구항
▼
1. A downhole perforation tool assembly, comprising: a first perforation gun comprising a first plurality of explosive charges and a first electrically actuated detonation initiator, wherein the first electrically actuated detonation initiator is coupled to at least one of the first plurality of exp
1. A downhole perforation tool assembly, comprising: a first perforation gun comprising a first plurality of explosive charges and a first electrically actuated detonation initiator, wherein the first electrically actuated detonation initiator is coupled to at least one of the first plurality of explosive charges;a second perforation gun, mechanically coupled to the first perforation gun, comprising a second plurality of explosive charges, a delay element, and a second electrically actuated detonation initiator, wherein the second electrically actuated detonation initiator is coupled to at least one of the second plurality of explosive charges; andone or more electrical conductors coupled to the first and second electrically actuated detonation initiators and an electrical firing unit;wherein both the first and second electrically actuated detonation initiators are configured to actuate in response to simultaneously receiving a single electrical signal conveyed by the one or more electrical conductors to detonate the first plurality of explosive charges and the second plurality of explosive charges respectively, wherein the delay element is configured to delay the detonation of the second plurality of explosive charges for a time delay after the detonation of the first plurality of explosive charges in response to receiving the single electrical signal, and wherein the timing of the actuating of the first and the second electrically actuated detonation initiators is controlled to mitigate a shock load in the perforation tool assembly associated with an interaction between the detonations of the first and second plurality of explosives, wherein the first and second electrically actuated detonation initiators are configured to actuate in response to the same single electrical signal conveyed by the one or more electrical conductors to detonate the first plurality of explosive charges and the second plurality of explosive charges. 2. The perforation tool assembly of claim 1, wherein the delay element is configured to implement the time delay between receiving the electrical signal from the electrical conductor and initiating detonation of the second plurality of explosive charges. 3. The perforation tool assembly of claim 1, further comprising a spacer located between the first perforation gun and the second perforation gun, wherein the one or more electrical conductors passes through an interior of the spacer. 4. The perforation tool assembly of claim 3, wherein the spacer has a tool body composed of a non-steel material. 5. The perforation tool assembly of claim 3, wherein the spacer has a tool body composed of a composite material. 6. The perforation tool assembly of claim 3, wherein the spacer is configured to provide an acoustic impedance mismatch. 7. The perforation tool assembly of claim 1, further comprising a third perforation gun comprising a third plurality of explosive charges and a third electrically actuated detonation initiator, wherein the third electrically actuated detonation initiator is coupled to at least one of the third plurality of explosive charges, wherein the one or more electrical conductors is coupled to the third electrically actuated detonation initiator, and wherein the third electrically actuated detonation initiator is configured to actuate in response to the same single electrical signal conveyed by the electrical conductor. 8. The perforation tool assembly of claim 1, wherein the downhole perforation tool assembly further comprises at least one structure that alters the propagation of the shock wave through the tool body of the perforation tool assembly. 9. The perforation tool assembly of claim 8, wherein the at least one structure that alters the propagation of the shock wave is selected from the group consisting of: a mass energy absorber, a deformable energy absorber, a hydraulic shock absorber, and a decoupler. 10. The perforation tool assembly of claim 1, wherein the downhole perforation tool assembly further comprises a plurality of structures that alters the propagation of the shock wave through the tool body of the perforation tool assembly. 11. A downhole perforation tool assembly, comprising: a plurality of perforation guns, wherein each perforation gun of the plurality of perforation guns comprises a plurality of explosive charges;a plurality of electrically actuated detonation initiators associated with each corresponding perforation gun of the plurality of perforation guns, wherein each electrically actuated detonation initiator in each of the plurality of perforation guns is coupled to at least one of the corresponding plurality of explosive charges;an electrical conductor coupled to the each of the plurality of electrically actuated detonation initiators and an electrical firing unit; anda delay element operably associated with at least one of the plurality of perforation guns,wherein a plurality of electrically actuated detonation initiators are configured to actuate in response to receiving a single electrical signal conveyed by the electrical conductor to detonate each plurality of explosive charges, wherein the at least one of the plurality of perforation guns operably associated with the delay element is configured to detonated after a time delay from at least one other perforation gun of the plurality of perforation guns not comprising the delay element in response to receiving the single electrical signal, wherein the plurality of electrically actuated detonation initiators are configured to actuate in response to the same single electrical signal conveyed by the electrical conductor to detonate each plurality of explosive charges. 12. The assembly of claim 11, wherein at least two of the plurality of electrically actuated detonation initiators are configured to detonate substantially concurrently. 13. The assembly of claim 11, wherein the electrical signal comprises a voltage level, and wherein the plurality of electrically actuated detonation initiators are configured to actuate in response to the voltage level of the electrical signal exceeding a threshold. 14. The assembly of claim 11, wherein the electrical signal comprises a current level, and wherein the plurality of electrically actuated detonation initiators are configured to actuate in response to the current level of the electrical signal exceeding a threshold. 15. The assembly of claim 11, wherein the electrical signal comprises a voltage level and a current level, and wherein the plurality of electrically actuated detonation initiators are configured to actuate in response to a sequence of values of at least one of the voltage level or the current level of the electrical signal. 16. The assembly of claim 11, wherein the downhole perforation tool assembly further comprises at least one structure that alters the propagation of the shock wave through a body of the plurality of perforation guns. 17. The assembly of claim 16, wherein the at least one structure that alters the propagation of the shock wave is selected from the group consisting of: a mass energy absorber, a deformable energy absorber, a hydraulic shock absorber, and a decoupler. 18. The assembly of claim 11, further comprising a spacer located between at least two of the plurality of perforation guns, wherein the electrical conductor passes through an interior of the spacer. 19. The assembly of claim 18, wherein the spacer has a tool body composed of a non-steel material. 20. The assembly of claim 18, wherein the spacer is configured to provide an acoustic impedance mismatch.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.