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A plugging system, method, and plugging composition for oilfield profile control and flooding

A technology of profile control and flood control, which is applied in drilling compositions, chemical instruments and methods, earthwork drilling and production, etc., can solve the problems of one-way breakthrough of water injection wells, low sweep coefficient, uneven benefit of oil wells, etc., and achieve reduction Pollution, EOR effects

Active Publication Date: 2018-03-20
延安市奥维石油工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a plugging system for profile control and flooding in an oil field, which can transform the oily sludge into a profile control plugging agent and carry out deep profile control and flooding, and carry out oil field plugging, which not only solves the problem of injection in the prior art Water wells have one-way breakthrough, low sweep coefficient, uneven benefit from oil wells, and effective use of oily sludge, an oilfield waste

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  • A plugging system, method, and plugging composition for oilfield profile control and flooding

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Effect test

Embodiment 1

[0102] The method of using the above-mentioned oilfield profile control, flooding and plugging system to carry out oilfield profile control, flooding and plugging is specifically carried out according to the following steps:

[0103] Step 1, prepare for oilfield profile control, flooding and plugging, specifically follow the steps below:

[0104] First, inject the oily sludge cleaned from the oil tank station into the sludge pool 1;

[0105] Then, use clear water to carry out trial injection, the specific method is to inject clear water from the clear water tank 3 into the stirring tank 5, then directly inject the clear water into the formation, measure the injected clear water through the flow meter 7, and use the pressure gauge 8 to measure the formation pressure. Real-time monitoring, real-time understanding of pressure changes, providing reference for injection of plugging agent construction, so as to control the injection speed and lifting pressure value of each slug acco...

Embodiment 2

[0139] The method of using the above-mentioned oilfield profile control, flooding and plugging system to carry out oilfield profile control, flooding and plugging is specifically carried out according to the following steps:

[0140] Step 1, prepare for oilfield profile control, flooding and plugging, specifically follow the steps below:

[0141] First, inject the oily sludge cleaned from the oil tank station into the sludge pool 1;

[0142] Then, use clear water to carry out trial injection, the specific method is to inject clear water from the clear water tank 3 into the stirring tank 5, then directly inject the clear water into the formation, measure the injected clear water through the flow meter 7, and use the pressure gauge 8 to measure the formation pressure. Real-time monitoring, real-time understanding of pressure changes, providing reference for injection of plugging agent construction, so as to control the injection speed and lifting pressure value of each slug acco...

Embodiment 3

[0176] The method of using the above-mentioned oilfield profile control, flooding and plugging system to carry out oilfield profile control, flooding and plugging is specifically carried out according to the following steps:

[0177] Step 1, prepare for oilfield profile control, flooding and plugging, specifically follow the steps below:

[0178] First, inject the oily sludge cleaned from the oil tank station into the sludge pool 1;

[0179] Then, use clear water to carry out trial injection, the specific method is to inject clear water from the clear water tank 3 into the stirring tank 5, then directly inject the clear water into the formation, measure the injected clear water through the flow meter 7, and use the pressure gauge 8 to measure the formation pressure. Real-time monitoring, real-time understanding of pressure changes, providing reference for injection of plugging agent construction, so as to control the injection speed and lifting pressure value of each slug accord...

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Abstract

The invention discloses an oilfield profile control and flooding plugging system, which comprises a dirty oil sludge tank, a clean water tank and a stirring tank, the dirty sludge tank and the stirring tank are connected by a pipeline, a flow meter is arranged on the pipeline, and the clean water tank is connected to the clean water pipeline through a clean water pipeline The mixing tank is connected, the clean water pipeline is provided with a valve, the mixing tank is provided with a chemical injection port, the mixing tank is provided with an output pipe, the output pipe is provided with a flow meter and a pressure gauge, the output pipe is connected to the water injection well, and the output pipe is also There are three output valves, and the water injection well communicates with the stratum to be filled. The present invention also relates to a method for oilfield profile control and flooding plugging by using the oilfield profile control and flooding plugging system and a composition used for each slug system in the oil well profile control and flooding method. The oily sludge can be transformed into a profile control and plugging agent for deep profile control and displacement, and oil field plugging, which solves the problems of one-way breakthrough of water injection wells, low sweep coefficient, and uneven benefit of oil wells in the prior art.

Description

technical field [0001] The invention belongs to the technical field of petroleum waste recycling equipment, and relates to a plugging system for profile control, flooding, and plugging in an oil field. A slug composition for plugging used in the method of regulating and flooding plugging. Background technique [0002] Oily sludge is an industrial waste associated with the dehydration process of crude oil. In the process of oilfield exploitation, the cuttings of the oil layer will inevitably be produced along with the crude oil production. my country's oilfields produce more than 5 million tons of oily sludge every year. How to scientifically and rationally process and utilize oily sludge is an urgent problem for major oilfields. one of the main problems. Conventional landfill not only occupies land resources, but also pollutes soil and groundwater resources, deteriorating the environment; burning treatment, high cost, easy to generate dust, waste gas, causing secondary envi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20C09K8/512
Inventor 童雪晨宋成君张晓卫
Owner 延安市奥维石油工程技术有限公司
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