Abstract: The present invention discloses a permanent packer and an extended gas lift method using the permanent packer, the method comprising: S1. imbedding the extended gas lift embedded pipe when setting the permanent packer, wherein the extended gas lift embedded pipe has an upper end being closed and a lower end being open, is provided therein with a one-way valve through which the fluid can pass from top to bottom; S2. lowering a breaking device from the production casing when in the extended gas lift, to break the upper end of the extended gas lift embedded pipe such that the upper and lower ends of the extended gas lift embedded pipe are communicated; and S3. injecting gas into the production casing, lifting the accumulated liquid in the bottom hole to the ground surface, to complete the extended gas lift.

Abstract: A method for manufacturing a wire harness, and a wire harness. The method includes: Step S110: printing an insulation carrier by a 3D printing process; Step S120: laying at least one conductor on the insulation carrier; and Step S130: printing an insulation layer on the insulation carrier by a 3D printing process, to make the conductor be enclosed between the insulation carrier and the insulation layer. The wire harness is manufactured by the method for manufacturing the wire harness. The present disclosure provides a method for manufacturing wire harness by means of 3D printing, in which a wire harness can be obtained by printing an insulation layer and laying a conductor alternatively.

Abstract: The present application provides a terminal and a processing method thereof. The terminal includes a connecting portion, a first fixing portion and a conducting portion that are connected in sequence. The connecting portion is used for being connected to a cable. The conducting portion includes a plurality of elastic sheets that are arranged at intervals in a circumferential direction. First ends of the elastic sheets are all fixedly connected to the first fixing portion, and a first groove is arranged between any two adjacent elastic sheets. The present application alleviates the technical problems of large contact resistance and high temperature rise at the connection position of the existing plug-in terminal.

Abstract: A novel end aluminum part including a first cylinder (1) for accommodating a conductor (7) of an aluminum wire (5), a second cylinder (2) for abutting an insulation layer (6) of the aluminum wire (5), and a third cylinder (3) for accommodating the aluminum wire (5). The first cylinder (1) is connected to the top of the second cylinder (2), and the third cylinder (3) is connected to the bottom of the second cylinder (2). An inner diameter of the bottom of the second cylinder (2) is larger than an inner diameter of the top of the second cylinder (2), an inner diameter of the first cylinder (1) is the same as the inner diameter of the top of the second cylinder (2), and an inner diameter of the third cylinder (3) is the same as the inner diameter of the bottom of the second cylinder (2).

Abstract: The present invention discloses a permanent packer and an extended gas lift method using the permanent packer, the method comprising: S1. imbedding the extended gas lift embedded pipe when setting the permanent packer, wherein the extended gas lift embedded pipe has an upper end being closed and a lower end being open, is provided therein with a one-way valve through which the fluid can pass from top to bottom; S2. lowering a breaking device from the production casing when in the extended gas lift, to break the upper end of the extended gas lift embedded pipe such that the upper and lower ends of the extended gas lift embedded pipe are communicated; and S3. injecting gas into the production casing, lifting the accumulated liquid in the bottom hole to the ground surface, to complete the extended gas lift.