A continuous injection acidification equipment for water injection well

A technology for water injection wells and equipment, which is applied in wellbore/well components, production fluids, earth-moving drilling, etc., can solve the problems of high labor intensity, high operating costs, complicated processes, etc., and achieves reduced labor intensity, simplified construction operations, The effect of reducing the water injection pressure

A technology for water injection wells and equipment, which is applied in wellbore/well components, production fluids, earth-moving drilling, etc., can solve the problems of high labor intensity, high operating costs, complicated processes, etc., and achieves reduced labor intensity, simplified construction operations, The effect of reducing the water injection pressure

CN104879105BActive Publication Date: 2018-03-09PETROCHINA CO LTD
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  • A continuous injection acidification equipment for water injection well
  • A continuous injection acidification equipment for water injection well

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 and figure 2 Shown is a continuous injection acidification equipment for water injection wells. The present invention is a mobile integrated online acidification device, which consists of an acid liquid storage tank 1, a hydraulic double-diaphragm metering pump 2, a control system 3, and an acid liquid pipeline system 4 , online monitoring system 5, truck moving system, in which the acid liquid storage tank 1 is connected with the hydraulic double diaphragm metering pump 2, the outlet of the hydraulic double diaphragm metering pump 2 is connected with the acid liquid pipeline system 4, and the control system 3 is connected with the hydraulic double diaphragm metering The pump 2 is connected, the on-line monitoring system 5 is connected with the acid pipeline system 4, the common steel base of the acid storage tank 1, the hydraulic double-diaphragm metering pump 2 and the control system 3 is connected with the chassis of the truck mobile system.

Embodiment 2

[0025] On the basis of Embodiment 1, the number of the hydraulic double-diaphragm metering pumps 2 is three, and the working state is set as two open and one standby. The specific connection method between the acid liquid storage tank 1 and the hydraulic double-diaphragm metering pump 2 is: the bottom of the acid liquid tank 1 is connected with a ball valve through a pipeline, the ball valve is connected with a Y-type filter, the Y-type filter and the hydraulic double-diaphragm metering pump The inlet of 2 is connected, the acid liquid is filtered through the Y-type filter and enters the hydraulic double-diaphragm metering pump 2, and the liquid is pressurized by the hydraulic double-diaphragm metering pump 2 and then enters the wellhead through the acid liquid pipeline system 4. The acid liquid storage tank 1 is composed of a magnetic flap liquid level gauge 1-1, a sewage outlet 1-2, and a dosing port 1-3. The acid liquid is added through the dosing port, and the liquid level ...

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Abstract

The invention belongs to the technical field of oil field water injection development, and specifically provides a water injection well continuous injection acidification equipment, which consists of an acid liquid storage tank (1), a hydraulic double-diaphragm metering pump (2), a control system (3), and an acid liquid pipeline system (4), on-line monitoring system (5), and truck moving system, in which the acid storage tank (1) is connected to the hydraulic double-diaphragm metering pump (2), and the outlet of the hydraulic double-diaphragm metering pump (2) is connected to the acid pipeline The system (4) is connected, the control system (3) is connected with the hydraulic double diaphragm metering pump (2), the online monitoring system (5) is connected with the acid liquid pipeline system (4), the acid liquid storage tank (1), the hydraulic double diaphragm The common steel base of the metering pump (2) and the control system (3) is connected with the chassis of the truck mobile system. The invention realizes efficient, rapid and large-scale plugging removal of water injection wells through online construction, reduces water injection pressure, and increases water injection volume.

Description

technical field [0001] The invention relates to an acidizing technology for water injection wells in downhole operations in the field of water injection development in oil fields, and in particular to a continuous injection acidification equipment for water injection wells aimed at efficiently and rapidly reducing wellhead injection pressure and improving the water injection capacity of the water injection wells. Background technique [0002] The reduction of water injection capacity of water injection wells in domestic oilfields is mostly caused by the reduction of permeability near the wellbore. The reasons for this change include rock fragmentation, water pollution of injection water, swelling of clay attached to the hole wall, and particle migration. In response to this situation, acidification measures are generally used to reduce pressure and increase injection. Acidizing can effectively remove plugging components, improve reservoir water absorption capacity, reduce in...

Claims

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Application Information

Patent Timeline
09 Mar 2018
Publication
CN104879105B
IPC
E21B43/22; E21B43/20
Inventors
宋昭杰; 陆红军