IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0075528
(2011-03-30)
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등록번호 |
US-8668005
(2014-03-11)
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발명자
/ 주소 |
- Colon, Eligio Antonio
- Geoffroy, Grady
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출원인 / 주소 |
|
대리인 / 주소 |
Law Office of Jesse D. Lambert, LLC
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인용정보 |
피인용 횟수 :
0 인용 특허 :
6 |
초록
▼
A dump bailer for downhole placement of flowable materials in a wellbore. The dump bailer has an elongated housing with a cavity for placement of the flowable materials. The housing has an open bottom. An expendable cap or plug, of a magnetic material, is held within the open bottom by a shear pin,
A dump bailer for downhole placement of flowable materials in a wellbore. The dump bailer has an elongated housing with a cavity for placement of the flowable materials. The housing has an open bottom. An expendable cap or plug, of a magnetic material, is held within the open bottom by a shear pin, sufficient to hold the plug in place with the material within the cavity. An electric solenoid surrounds the plug. Energizing the solenoid coil by electric current creates a magnetic field which overcomes the shear pin and forces the plug out of the open bottom. The material may then flow out of the cavity. Alternatively, a sliding sleeve may be disposed in the open bottom, which moves from a first closed position to a second open position, in response to the magnetic field.
대표청구항
▼
1. A dump bailer, comprising: a housing having a hollow cavity therein, said cavity having an open bottom through which flowable materials within said cavity can flow out;an electric solenoid coil disposed in proximal relationship with said housing, and connected to a source of electric current;a ca
1. A dump bailer, comprising: a housing having a hollow cavity therein, said cavity having an open bottom through which flowable materials within said cavity can flow out;an electric solenoid coil disposed in proximal relationship with said housing, and connected to a source of electric current;a cap inserted into said open bottom in said cavity, responsive to energizing of said electric solenoid coil by passage of electric current therethrough, whereby as said coil is energized said cap moves and said open bottom is opened, wherein said cap is moved out of said open bottom and detached from said housing; anda means for retaining said cap in place and blocking said opening as said coil is not energized. 2. The dump bailer of claim 1, wherein said means for retaining said cap in place within said open bottom comprises a shear pin. 3. The dump bailer of claim 1, wherein said source of electric current is disposed at the surface of a well. 4. The dump bailer of claim 1, wherein said coil is positioned so as to encircle said cap. 5. The dump bailer of claim 1, wherein said electric current is direct current. 6. A dump bailer for placement of flowable solids material downhole in a wellbore, comprising: an elongated cylindrical housing having an open bottom and a cavity therein;an electric solenoid coil disposed around said open bottom of said housing, said electric coil connected to a source of electric current; anda cap insertable into said open bottom of said housing, and a means for retaining said cap in position while a volume of flowable material is disposed within said cavity, said cap responsive to a magnetic field created by energizing of said electric solenoid coil such that a force arising from said magnetic field overcomes said means for retaining said cap in position and moves said cap out of said open bottom, wherein said cap is detached from said housing, whereby said flowable material flows from said cavity. 7. The dump bailer of claim 6, wherein said cap is of a magnetic material. 8. The dump bailer of claim 6, wherein said means for retaining said cap in position is a shear pin. 9. The dump bailer of claim 6, wherein as said cap is moved from said open bottom, said cap falls into said wellbore. 10. A dump bailer for placement of flowable solids material downhole in a wellbore, comprising: an elongated cylindrical housing having an open bottom and a cavity therein, said cylindrical housing disposed downhole in a wellbore on a wireline;an electric solenoid coil disposed around said open bottom of said housing, said electric coil connected to a source of electric current; anda cap inserted into said open bottom of said housing, a means for retaining said cap in position, and a volume of flowable material disposed within said cavity, said cap responsive to a magnetic field created by energizing of said electric solenoid coil such that a force arising from said magnetic field overcomes said means for retaining said cap in position and moves said cap out of said open bottom, wherein said cap is detached from said housing, whereby said flowable material flows from said cavity.
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