IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0041885
(2001-10-24)
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발명자
/ 주소 |
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출원인 / 주소 |
|
대리인 / 주소 |
Steins & Associates, P.C.
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인용정보 |
피인용 횟수 :
5 인용 특허 :
4 |
초록
▼
Apparatus and method for explosive and chemical rehabilitation of existing oil wells' perforations and formation, to stimulate oil production therefrom, comprising a combination of detonating cord with a plurality of hardened steel tubes, disposed at predetermined distances thereabout, effectuating
Apparatus and method for explosive and chemical rehabilitation of existing oil wells' perforations and formation, to stimulate oil production therefrom, comprising a combination of detonating cord with a plurality of hardened steel tubes, disposed at predetermined distances thereabout, effectuating a time sequencing of the detonating cord explosions and burn rate. A high-pressure detonator, surrounded by a protective shield, which absorbs the explosive power of the detonator while preserving its desired release of kinetic energy, is used to ignite the detonating cord. An external plastic tube, adjacent to the detonating cord, is filled with oil well production enhancing chemicals such as acid etchers or paraffin dispersants, wherein upon ignition of the detonating cord, the chemicals are explosively propelled through perforations into the formation thereabout, to stimulate and chemically react therewith. A Sample basket and weight are mounted to the bottom of the apparatus. A 0.092 piano wire supports entire apparatus.
대표청구항
▼
Apparatus and method for explosive and chemical rehabilitation of existing oil wells' perforations and formation, to stimulate oil production therefrom, comprising a combination of detonating cord with a plurality of hardened steel tubes, disposed at predetermined distances thereabout, effectuating
Apparatus and method for explosive and chemical rehabilitation of existing oil wells' perforations and formation, to stimulate oil production therefrom, comprising a combination of detonating cord with a plurality of hardened steel tubes, disposed at predetermined distances thereabout, effectuating a time sequencing of the detonating cord explosions and burn rate. A high-pressure detonator, surrounded by a protective shield, which absorbs the explosive power of the detonator while preserving its desired release of kinetic energy, is used to ignite the detonating cord. An external plastic tube, adjacent to the detonating cord, is filled with oil well production enhancing chemicals such as acid etchers or paraffin dispersants, wherein upon ignition of the detonating cord, the chemicals are explosively propelled through perforations into the formation thereabout, to stimulate and chemically react therewith. A Sample basket and weight are mounted to the bottom of the apparatus. A 0.092 piano wire supports entire apparatus. d each of the T-shaped mounting rings has an inner wall provided with multiple lugs secured in the annular positioning groove of the upper spindle and secured in the annular positioning groove of the lower spindle. 2. The spring hinge structure in accordance with claim 1, wherein the upper spindle has a second end provided with a pivot insertion section pivotally mounted in the upper shaft tube of the first hinge plate, and an enlarged cover head rested on an outer end face of the upper shaft tube of the first hinge plate, the lower spindle has a second end provided with a pivot insertion section pivotally mounted in the lower shaft tube of the first hinge plate, and an enlarged cover head rested on an outer end face of the lower shaft tube of the first hinge plate, the upper spindle is formed with multiple adjusting holes located adjacent to the pivot insertion section, the upper shaft tube of the first hinge plate is formed with a positioning insertion hole, an insertion pin is extended through the positioning insertion hole of the upper shaft tube of the first hinge plate, and is inserted into one of the adjusting holes of the upper spindle.3. The spring hinge structure in accordance with claim 2, wherein the insertion pin is provided with an annular positioning flange that is passed through the positioning insertion hole of the upper shaft tube of the first hinge plate, and is clamped between an outer wall of the upper spindle and an inner wall of the upper shaft tube of the first hinge plate, thereby preventing from detachment of the insertion pin.4. The spring hinge structure in accordance with claim 2, wherein the cover head of the upper spindle is formed with a hexagonal insertion recess, so that a tool may be inserted into the insertion recess of the cover head of the upper spindle.5. The spring hinge structure in accordance with claim 1, wherein the elongated shaft tube of the second hinge plate has a lower portion formed with a positioning hole, the lower spindle is formed with a positioning hole located adjacent to the fixing seat of the lower spindle, and the spring hinge structure further comprising a positioning pin extended through the positioning hole of the elongated shaft tube of the second hinge plate, and is inserted into the positioning hole of the lower spindle, so that the elongated shaft tube of the second hinge plate may be combined with the lower spindle.6. The spring hinge structure in accordance with claim 1, wherein the first hinge plate is made of metallic material, and has a first side provided with a blade formed with multiple joint holes, and a second side provided with the upper shaft tube and the lower shaft tube.7. The spring hinge structure in accordance with claim 1, wherein the second hinge plate is made of metallic material, and has a first side provided with a blade formed with multiple joint holes, and a second side provided with the elongated shaft tube.8. The spring hinge structure in accordance with claim 1, wherein the fixing seat of the upper spindle is formed with a positioning slit for securing a spring leg formed on the first end of the spring, and the fixing seat of the lower spindle is formed with a positioning slit for securing a spring leg formed on the second end of the spring.9. The spring hinge structure in accordance with claim 1, wherein the upper spindle is made of composite plastic material and is integrally with the fixing seat made of metallic material.10. The spring hinge structure in accordance with claim 1, wherein the lower spindle is made of composite plastic material and is integrally with the fixing seat made of metallic material.11. The spring hinge structure in accordance with claim 1, wherein each of the T-shaped mounting rings is made of composite plastic material.12. The spring hinge structure in accordance with claim 1, wherein each of the T-shaped mounting rings includes a sleeve.13. The spring hinge structure in accordance with claim 12, wherein in
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