Water injection well layered electric testing method employing metallic sheath detective cable

A metal sheath, detection cable technology, applied in surveying, earthwork drilling, wellbore/well components, etc., can solve the problem of wasting manpower and material resources, and achieve the effect of reliable work and reasonable design

Inactive Publication Date: 2007-12-05
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a layered electric measurement and adjustment method for water injection wells using metal sheathed detection cables to overcome the existing method of multiple fishing for layered testing and adjustment of water injection, which wastes manpower and material resources Defects

Method used

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  • Water injection well layered electric testing method employing metallic sheath detective cable

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specific Embodiment approach 1

[0007] Specific implementation manner 1: The following specifically describes this implementation manner in conjunction with FIG. 1 and FIG. 2. It consists of the following steps: 1. The downhole measuring and adjusting instrument 2 is suspended by the test cable 3 to the interval to be deployed in the oil well 11 and is set under the command of the computer 5. The test cable 3 is made of a metal sheath located on the outer layer. 3-1. The insulating layer 3-2 at the middle layer, the communication line 3-3 at the core, and the power transmission line 3-4 are composed. The computer 5 set on the ground is connected to the communication line 3-3 of the test cable 3 Upper end; 2. The adjusting arm of the downhole measuring and adjusting instrument 2 is docked with the adjustable eccentric water injection plug 4 preset in the oil well 11, and water is injected into the interval that needs to be deployed in the oil well 11 and the water flow is tested, and the water in the adjusted int...

specific Embodiment approach 2

[0009] Specific implementation manner 2: The following specifically describes this implementation manner with reference to FIG. 1. The difference between this embodiment and the first embodiment is: the test cable 3 is wound on the cable winch 8. The cable winch 8 installed in the well raises or lowers the downhole tester 2 in the oil well, and the test cable 3 is wound in turn. The ground pulley 9 and the sky pulley 10 extend into the oil well 11. When the downhole tester 2 installed at the lower end of the test cable 3 is dropped into the well through the cable winch 8, the computer can collect the depth value of the test cable 3 into the oil well 11 to realize the accurate positioning of the downhole tester 2 .

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Abstract

The invention relates to an electric test method for flooding well lamination by using the metal jacket detecting cable. It relates to the separate injection and separate test method of oil production technology in the oil field. It overcomes the defect of wasting human and object power in the existing multiple throwing and fetching method. It contains the following steps: the silo testing instrument is hung to the rearranged section by the testing cable for locating and sealing. The regulating arm of the silo testing instrument is butted to the preinstalled adjustable eccentric flooding blocking device. It floods to the rearranged section in the oil well and tests the water-flow, the water pressure of this section and the temperature. A computer is used to monitor the data detected by the silo testing instrument and transmit the control signal depending on the deviation of the real-time flow and the preinstalled fluence, which adjusts the flooding flow of the blocking device until it reaches the desired flow. The computer deblocks the silo testing instrument through the testing cable and hangs it to the other rearranged sections in the oil well.

Description

Technical field [0001] The invention relates to a method for stratified water injection and stratified testing in an oil field production process. Background technique [0002] Downhole layered water injection technology is one of the important methods in the process of oilfield development. At present, most oilfields still use multiple fishing methods to test and adjust the water injection volume of water injection wells, which wastes manpower and material resources. However, it is a brand-new process to use the downhole measuring and adjusting instrument and the plug (water injection valve) put into the tubing in advance to adjust the water injection volume multiple times in the downhole process, and effectively control the downhole stratified flow rate. Various oil production plants in Daqing Oilfield have worked hard to develop this method. Conventional water injection well water volume adjustment is achieved by frequently dropping plugs and injection valves, and changing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/10E21B43/20E21B47/00E21B47/06E21B47/07
Inventor 刘合程杰成刘东升裴晓含王中国
Owner DAQING OILFIELD CO LTD
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