Cable transmission drillable type water source well leaking stoppage method

A plugging method and technology for water source wells, which are applied in earthwork drilling, wellbore/well components, measurement, etc., can solve problems such as inability to realize plugging in ultra-deep wells, repeated plugging and repairs, etc., and reduce maintenance costs. Reduce the labor intensity of the well, increase the success rate of workover, and reduce the effect of workover cost

Inactive Publication Date: 2015-07-22
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the shortcomings that the existing water well plugging methods cannot realize ultra-deep well plugging, and cannot perform repeated plugging and repair operations

Method used

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  • Cable transmission drillable type water source well leaking stoppage method
  • Cable transmission drillable type water source well leaking stoppage method
  • Cable transmission drillable type water source well leaking stoppage method

Examples

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Embodiment Construction

[0014] like figure 1 , figure 2 , image 3 Shown, a cable transmission drillable water source well plugging method, the method steps are as follows:

[0015] 1. According to the sand gushing and salt water production of the problematic water well, use the logging truck 1 to cooperate with the downhole TV to find out the location of the leakage point of the problematic water well, determine the damage of the leakage point, and measure the diameter of the problematic water well at the same time;

[0016] 2. Make the drillable subsidy pipe 4 according to the diameter of the problem well and the damage of the leakage point. The drillable subsidy pipe 4 includes the base pipe 11, and the base pipe 11 is equipped with a plurality of expansion rubbers 9 at even intervals, and the expansion rubber 9 Both ends are provided with plastic retaining hoops 10, and one end of the plastic retaining hoops 10 adjacent to the expansion rubber 9 is designed with a circle of water tanks, and a ...

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Abstract

The invention relates to the technical field of water well repairing, in particular to a cable transmission drillable type water source well leaking stoppage method. The cable transmission drillable type water source well leaking stoppage method comprises the steps that according to the situations of sand gushing and effluent salt water of a problem water well, a logging truck is used in cooperation with a downhole television to find the position of a leakage point of the problem water well, the damage situation of the leakage point is determined, and meanwhile the hole diameter of the problem water well is measured. The cable transmission drillable type water source well leaking stoppage method improves the transmission speed, can achieve leaking stoppage of water wells with the depth being smaller than 200 meters, can achieve repeated operation on the water wells, achieves the purpose of repeated leaking stoppage repairing operations on the same water well, improves the well repairing success rate, prolongs the service life of the water well, relives the labor intensity of well repairing, and reduces the well repairing cost.

Description

Technical field: [0001] The invention relates to the technical field of water well workover, in particular to a plugging method for a drillable water source well transmitted by cables. Background technique: [0002] At present, all walks of life are developing more and more groundwater, and the construction of deep water wells is increasing. Most of these wells are decades old. During daily use, leaks occur in the well casing, causing problems such as sand inrush, salt water, and water quality in normal wells. At present, water well plugging generally uses a crane to cooperate, and a drilling tool or oil pipe is used to transport the steel liner to the leak point, and the plugging is performed by expanding the expansion rubber. Transmission with drilling tools, the transmission speed is generally about 200 meters per hour, and the transmission speed is slow, so it is only suitable for plugging within 800 meters. If the depth exceeds 800 meters, the expansion rubber will exp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/10
CPCE21B23/00E21B29/10E21B47/002E21B47/08
Inventor 朱颖超姚艳华周宏刘志刚张志伟
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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