# US 12,760,604 B2 · Splice connection system for electro submersible pump cables in oil wells and method of assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,760,604 B2 - Document ID: US12760604B2 - Status: Granted - Kind: B2 - Application number: 18/921,020 - Filed: 2024-10-21 - Published: 2026-03-12 - Granted: 2026-10-13 - Earliest claimed: 2024-09-06 - Assignees: Giovanni Vestita - Applicants: Giovanni Antonio Vestita - Inventors: Giovanni Antonio Vestita - Web page: https://patentgrep.com/patent/US12760604B2 ## CPC - E21B 17/028: {Electrical or electro-magnetic connections} - E21B 43/128: {Adaptation of pump systems with down-hole electric drives} - H01R 4/70: Insulation of connections (end caps H01R4/22) - H02G 15/24: Cable junctions - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES ## Abstract The present invention relates to a splice connection system for securely connecting electro submersible pump cables that transmit power from an external source to downhole equipment in an underground well for oil extraction applications, thereby ensuring enhanced durability, reliability, and ease of assembly in harsh well environments. The splice connection system comprises a pair of ESP cables and a spliced enclosure. The spliced enclosure comprises seal bands, sealing rings, seal members, splice connectors, a protective case, a potting insulation compound, an epoxy sealant and reinforced housing. The splice connection system significantly reduces installation time and complexity compared to traditional methods by providing a secure, efficient, and resilient splicing approach, thereby improving overall reliability of ESP systems. The splice connection system simplifies the splicing process, minimizes waste, and enhances performance and longevity of ESP cable connections. ## Claims ### Claim 1 A splice connection system for electrical submersible pump (ESP) cables, comprising: a reinforced housing having a first section and a second section, wherein the first section and the second section are configured with openings for receiving terminal ends of a first ESP cable and of a second ESP cable, respectively, wherein the first section and the second section are slidably positioned on the first ESP cable and on the second ESP cable at a distance from the respective terminal ends; a pair of seal members configured to receive stripped conductor wires of the first ESP cable and of the second ESP cable, respectively, thereby ensuring a secure and insulated connection; a plurality of splice connectors configured to electrically connect the stripped conductor wires of the first ESP cable and of the second ESP cable, respectively, thereby creating a spliced connection that allows transmission of electrical power and control signals between the first ESP cable and the second ESP cable; a protective case having an upper section and a lower section, wherein the lower section is secured to the upper section to enclose the spliced connection, wherein the upper section and the lower section are configured to respectively receive the plurality of splice connectors to secure the spliced connection, and wherein the protective case is entirely concealed by sliding and connecting the first section and the second section of the reinforced housing upon enclosing the spliced connection by the protective case, thereby forming an additional layer that enhances protection against mechanical stress, environmental factors, and potential impact; seal bands that are encircled around the first ESP cable and the second ESP cable to provide additional support and protection, thereby preventing fraying of the first ESP cable and of the second ESP cable; and sealing rings that are positioned over the seal bands to provide a waterproof seal, thereby preventing fluids from entering the spliced connection. ### Claim 2 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the plurality of splice connectors is adapted to receive and secure respective end portions of the stripped conductor wires of the first ESP cable and the second ESP cable from both sides. ### Claim 3 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the splice connection system further comprises a potting insulation compound that is injected into a plurality of primary holes on the protective case using a potting injector, thereby expelling air through multiple exhaust holes on the protective case. ### Claim 4 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the splice connection system further comprises an epoxy sealant that is injected into a plurality of secondary holes on the protective case using an epoxy injector, thereby expelling air through the multiple exhaust holes on the protective case. ### Claim 5 (depends on 4) The splice connection system for electro submersible pump (ESP) cables of claim 4, wherein the epoxy sealant is applied to edges of the first section and the second section of the reinforced housing to create a secure connection that encloses the protective case over the spliced connection. ### Claim 6 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the one or more splice connectors are securely clamped and held together using a jaw tool upon securing the respective end portions of the stripped conductor wires of the first ESP cable and the second ESP cable, thereby preventing separation of the one or more splice connectors during operation. ### Claim 7 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the one or more splice connectors are coated with red isolant air dry using an air drying unit upon securely clamping the one or more splice connectors, thereby providing an additional layer of insulation and protection against moisture and corrosion. ### Claim 8 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the one or more splice connectors are made of a high-conductivity material such as copper, thereby ensuring efficient electrical transmission and minimizing energy losses. ### Claim 9 (depends on 1) The splice connection system for electro submersible pump (ESP) cables of claim 1, wherein the one or more splice connectors are varied in sizes along their length based on the type and gauge of the conductor wires of the first ESP cable and the second ESP cable, thereby ensuring a secure and efficient connection for different cable configurations. ### Claim 10 A splice connection system for electrical submersible pump (ESP) cables, comprising: a reinforced housing having a first section and a second section, wherein the first section and the second section are configured with openings for receiving terminal ends of a first ESP cable and of a second ESP cable, respectively; wherein the first section and the second section are slidably positioned on the first ESP cable and on the second ESP cable at a distance from the respective terminal ends; a pair of seal members configured to receive stripped conductor wires of the first ESP cable and of the second ESP cable, respectively, thereby ensuring a secure and insulated connection; a plurality of splice connectors configured to electrically connect the stripped conductor wires of the first ESP cable and of the second ESP cable, respectively, thereby creating a spliced connection that allows transmission of electrical power and control signals between the first ESP cable and the second ESP cable; a protective case having an upper section and a lower section, wherein the lower section is secured to the upper section to enclose the spliced connection, wherein the upper section and the lower section are configured to respectively receive the plurality of splice connectors to secure the spliced connection; a potting insulation compound disposed within a plurality of primary holes on the protective case, thereby filling an internal cavity of the protective case to provide enhanced insulation and protection for the spliced connection; an epoxy sealant disposed within a plurality of secondary holes on the protective case, thereby ensuring a robust seal that enhances moisture resistance and protects the spliced connection, wherein the epoxy sealant is applied to edges of the first section and of the second section of the reinforced housing to create a secure connection that encloses the protective case over the spliced connection, thereby forming an additional layer that enhances protection against mechanical stress, environmental factors, and potential impact; wherein the protective case is entirely concealed by sliding and connecting the first section and the second section of the reinforced housing upon enclosing the spliced connection by the protective case; seal bands that are encircled around the first ESP cable and the second ESP cable to provide additional support and protection, thereby preventing fraying of the first ESP cable and the second ESP cable; and sealing rings that are positioned over the seal bands to provide a waterproof seal, thereby preventing fluids from entering the spliced connection. ### Claim 11 (depends on 10) The splice connection system for electro submersible pump (ESP) cables of claim 10, wherein the one or more splice connectors are securely clamped and held together using a jaw tool upon securing the respective end portions of the stripped conductor wires of the first ESP cable and the second ESP cable, thereby preventing separation of the one or more splice connectors during operation. ### Claim 12 (depends on 10) The splice connection system for electro submersible pump (ESP) cables of claim 10, wherein the one or more splice connectors are coated with red isolant air dry using an air drying unit upon securely clamping the one or more splice connectors, thereby providing an additional layer of insulation and protection against moisture and corrosion. ### Claim 13 (depends on 10) The splice connection system for electrical submersible pump (ESP) cables of claim 10, wherein the one or more splice connectors are made of a high-conductivity material such as copper, thereby ensuring efficient electrical transmission and minimizing energy losses. ### Claim 14 (depends on 10) The splice connection system for electrical submersible pump (ESP) cables of claim 10, wherein the one or more splice connectors are varied in sizes along their length based on the type and gauge of the conductor wires of the first ESP cable and the second ESP cable, thereby ensuring a secure and efficient connection for different cable configurations.