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Skid-mounted jelly dispersion soft heterogeneous composite flooding system wellhead injection device, injection method and application

A jelly dispersion and composite oil displacement technology, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problems of inability to meet the requirements of the control and flooding system, such as mixing liquid and injection, and achieves a simple structure , Overcome the effect of high cost and simple operation

Active Publication Date: 2022-04-26
CHINA UNIV OF PETROLEUM (EAST CHINA) +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this device is suitable for the injection of one control and flooding system, and it cannot realize injection for two or more control and flooding systems.
CN107013195A discloses a method and system for wellhead injection of polymer microsphere stock solution. The device can realize the liquid mixing of injected water and polymer microsphere stock solution at the wellhead, and solves complex environments such as tidal flats, hills, and offshore operating platforms for a long time. Large-scale control and displacement fluid distribution is difficult, but it is still unable to meet the mixed fluid distribution of two or more control and displacement systems, and the high-pressure injection of wellhead control and displacement systems

Method used

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  • Skid-mounted jelly dispersion soft heterogeneous composite flooding system wellhead injection device, injection method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Taking the X1 well of Xia 52 Block of Linpan Oil Production Plant of Shengli Oilfield as an example, the single-component gel dispersion flooding technology is implemented. The daily water injection volume of this well is 24 cubic meters per day (1.0 cubic meters per hour). After water injection, the gel dispersion The mass concentration of jelly dispersion in the body flooding system is 1.0%, utilizes the device of the present invention to carry out the wellhead injection method of jelly dispersion oil flooding system, comprises the following steps:

[0062] (1) The jelly dispersion stock solution tank is placed in the water injection workshop, and a pump of the pumping system is connected with the jelly dispersion stock solution tank by a hose;

[0063] (2) Turn on the pumping system, set the pumping speed of the pumping system pump to be 0.015 cubic meters per hour, close the other pumps, and extract the jelly dispersion into the stirring and mixing system;

[0064] ...

Embodiment 2

[0067] Taking the X2 well of Xia 52 Block of Linpan Oil Production Plant of Shengli Oilfield as an example, the single-component gel dispersion flooding technology is implemented. The daily water injection volume of this well is 24 cubic meters per day (1.0 cubic meters per hour). After water injection, the gel dispersion The mass concentration of jelly dispersion in the body flooding system is 1.5%, utilizes the device of the present invention to carry out the wellhead injection method of jelly dispersion oil flooding system, comprises the following steps:

[0068] (1) The jelly dispersion stock solution tank is placed in the water injection workshop, and a pump of the pumping system is connected with the jelly dispersion stock solution tank by a hose;

[0069] (2) Turn on the pumping system, set the pumping speed of the pumping system pump to be 0.02 cubic meters per hour, turn off the other pumps, and extract the jelly dispersion into the stirring and mixing system;

[0070...

Embodiment 3

[0073] Taking Well A1, Fan 4 Unit, Daluhu Oilfield, Daluhu Oilfield, Shengli Oilfield Dongsheng Jinggong Petroleum Development Group Co., Ltd. as an example, the two-component jelly dispersion soft heterogeneous composite flooding technology was implemented. The daily water injection volume of this well is 24 cubic meters per day (1.0 square / hour), after water injection, the jelly dispersion mass concentration is 1.0% in the multi-component of the gel dispersion soft heterogeneous composite oil displacement system, and the oil displacement agent A mass concentration is 0.3%, utilizes the present invention The device performs the wellhead injection method of the jelly dispersion soft heterogeneous composite flooding system, comprising the following steps:

[0074] (1) Place the multi-component jelly dispersion stock solution tank and oil displacement agent A stock solution tank of the gel dispersion soft heterogeneous composite oil displacement system in the water injection work...

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Abstract

The invention relates to the field of oil field control and flooding, in particular to a skid-mounted jelly dispersion production device, a jelly dispersion and a preparation method and application thereof. The device includes: a pumping system, a stirring mixing system and a wellhead pumping system; the pumping system is used to pump the components of the jelly dispersion soft heterogeneous composite flooding system to the stirring mixing system for online mixing, The gel dispersion soft heterogeneous composite oil displacement system is obtained, and pumped into the well by the wellhead pumping system; the pumping system includes at least 2 pumps, which pump each component separately; the wellhead pumping system includes a stirring and mixing The jelly dispersion soft heterogeneous composite flooding system in the system is pumped out and pumped into the high-pressure plunger pump at the wellhead. The device can realize online mixing and injection of two or more components, and can meet the needs of long-term large-scale control and flooding operations, especially for continuous mixing and injection in complex environments such as tidal flats, hills, and offshore operating platforms. injection.

Description

technical field [0001] The invention belongs to the field of oilfield chemistry, and in particular relates to a multi-component wellhead injection device for a gel dispersion soft heterogeneous composite oil displacement system, the application of the device in oil field control and flooding, and a gel dispersion soft Multi-component wellhead injection method for heterogeneous composite flooding system. Background technique [0002] Improving the swept volume and oil washing efficiency of oil displacement agents are two ways to control water and stabilize oil in oilfields. The oil displacement technology based on gel dispersion soft heterogeneous composite flooding is an important technical means to realize the deep potential of remaining oil. , has been successfully applied in field implementation. The main role of the gel dispersion in the heterogeneous composite flooding system is to generate aggregation and expansion after the reservoir temperature ages, which can effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22
CPCE21B43/16
Inventor 赵光戴彩丽刘合王恩成由庆何龙杨帅邹晨伟杨倩茹谷成林吕亚慧
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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