A cable connection method and connection device for submersible electric pump well oil pipe
A submersible electric pump and cable docking technology, applied in cable joints, clamping/spring connections, etc., can solve problems such as cumbersome procedures, cable damage, and reduced pump inspection efficiency, and achieve simple operation, reduce operating costs, and improve The effect of checking pump operation efficiency
Inactive Publication Date: 2009-06-17
DAQING OILFIELD CO LTD
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Problems solved by technology
[0003] In order to solve the problems existing in the existing downhole cable connection technology of submersible electric pump wells, such as easy cable damage, high operating cost, and cumbersome procedures that reduce the efficiency of pump inspection operations, the present invention provides a new cable connection technology for submersible electric pump wells. Connection method and docking device specially made to implement the method
After the application of this method, the cable is no longer attached to the outside of the oil pipe, effectively solving the problem of easy damage to the cable during the lifting and lowering of the operation
Method used
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[0021] The present invention will be further described below in conjunction with accompanying drawing:
[0022] First, the conception process of the present invention is introduced. Considering that in the prior art, the electric submersible pump cable is attached to the outside of the oil pipe and fixed by a cable clip, it is easy to cause damage to the cable, increase the operating cost and reduce the efficiency of the pump inspection, so focus on developing a method that can place the cable in the pump. The connection method of the electric submersible pump unit cable in the oil pipe.
[0023] The method and the apparatus specially fabricated for carrying out the method are described in detail below. Depend on figure 1 As shown, it is a schematic diagram of the process string of the cable butt joint under pressure in the downhole tubing after applying this method. It can be seen from the figure that the device used is mainly composed of the cable upper connector a and the...
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A connecting method and butt connection device of cables in oil-submersible electric pump well pipelines, is mainly to solve the problem that when the existing oil-submersible electric pump well connects the cables underground, the connection outside the pipelines is easy to lead to damage; it has a high operation cost, fussy working procedures; and it reduces the pump detection operating efficiency; etc. Its is charactered in that: adopting a cable butt connection device with a cable upper connection body (a) and a cable lower connection body (b), placing the cable in the pipelines, and using the butt connection device to complete the butt connection of the underground cables. When the cables are needed to lift, the cable upper connection body (a) of the said butt connection device is lifted, and the clasp (4) on the bus terminal (6) in the said cable upper connection body (a) snaps and cuts the lock hook (16) in the bus terminal lock (13), accordingly lifting the cable upper connection body (a) and the top cable (32). After the application of the method, the cables are no longer attached to teh pipelines, thus avoiding the cable from damnify. In addition, the opeation of using the method for carrying out the oil-submersible electric pump butt connection of the underground cables, is extremely simple, thus greatly improving the operating efficiency of pump detection.
Description
Technical field: [0001] The present invention relates to a connection method of an uphole and downhole cable in an oil field and a docking device specially designed for realizing the method, in particular to a method and a docking device for completing the cable connection in an oil pipe in a submersible electric pump well. Background technique: [0002] For electric submersible pump wells, the integrity of the cables used to transmit electric energy is the key to ensuring its normal operation. However, in the prior art of the oil field, when these cables are used in the oil well, they are usually fixed on the outer surface of the oil pipe by using cable clips. In practice, it is found that the cable is easily damaged and scratched by the tubing collar during lifting and lowering, especially in inclined wells. Like this, just need often to change cable, because the price of cable is very expensive, therefore makes the production cost of electric submersible pump well oil re...
Claims
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IPC IPC(8): H02G15/08H01R4/38
Inventor 张传绪柴立新苗晓明刘遵权孙经纬
Owner DAQING OILFIELD CO LTD