Skid-mounted wellhead injection device and method for gel dispersoid soft body heterogeneous composite oil displacement system, 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 fluid mixing and injection in the control and flooding system, and meet the requirements of regulation and displacement. The effect of flooding operation requirements, improving on-site safety injection, and simple operation

Active Publication Date: 2019-08-06
CHINA UNIV OF PETROLEUM (EAST CHINA) +4
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  • 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 wellhead injection device and method for gel dispersoid soft body heterogeneous composite oil displacement system, and application

Examples

Experimental program
Comparison scheme
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 profile control and displacement, in particular to a skid-mounted gel dispersoid production device, a gel dispersoid and a preparation method and application of the gel dispersoid. The skid-mounted gel dispersoid production device comprises a pump suction system, a stirring and mixing system and a wellhead pumping-in system; the pump suction system is used for pumping all components of a gel dispersoid soft body heterogeneous composite oil displacement system into the stirring and mixing system to be mixed on line, thus the gel dispersoid soft body heterogeneous composite oil displacement system is obtained and pumped into a well through the wellhead pumping-in system; the pump suction system comprises two or more pumps, and all the components are pumped by the two or more pumps correspondingly; and the wellhead pumping-in system comprises a high-pressure plunger pump for pumping the gel dispersoid soft body heterogeneous composite oil displacement system in the stirring and mixing system out of and into a wellhead. The skid-mounted gel dispersoid production device can achieve online blending and injecting of the two or more components, the long-time and large-scale profile control and displacement operation demands can be met, and the skid-mounted gel dispersoid production device is especially suitable for continuous blending andinjection in complex environments such as mud flats, hills and offshore operation platforms.

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 Applications(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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