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Movable injection station and polymerization technique

A technology of injection system and mother liquor, applied in the fields of production fluids, wellbore/well components, earthwork drilling, etc., can solve the problems of inability to adapt to different blocks and strata of the oil field, difficult maintenance, low utilization rate, etc., and achieve easy relocation and repeatability. The effect of utilization, reduction of the number of equipment, and reduction of project investment

Inactive Publication Date: 2004-10-20
DAQING OILFIELD CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the expansion of the polymer injection range in Daqing Oilfield, polymer flooding is also required in the "non-return" block, and most of the facilities in the injection station are only used for 3 to 4 years, and have a long service life. The equipment is huge and covers a large area, with complex processes and large quantities. It is prone to mechanical failures, difficult to maintain, and even less easy to move. Unable to adapt to different blocks and formations in the oilfield, poor adaptability

Method used

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  • Movable injection station and polymerization technique
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Examples

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Embodiment 1

[0024] Example 1: The seven injection stations of No. 1 to No. 3 and # No. 5 to No. 8 in No. 1 and No. 8 of Xingbei in the production capacity construction of No. 4 Oil Production Plant of Daqing Oilfield adopted part of the technology of this invention. Taking "No. 6 Injection Station" as an example, 20 sets of injection pumps, 20 sets of valve groups, and 1 mother liquor storage tank will be built, and the project investment will be 6.30 million yuan. And use this invention, because cancel mother liquor storage tank, storage tank platform and valve chamber, reduce land occupation, saved engineering investment and be 500,000 yuan. After 3 to 4 years of production and operation, the injection pump room can be relocated as a whole for reuse.

Embodiment 2

[0025] Example 2: The technology of this invention has been completely adopted in Xingbei 4# injection station in the production capacity construction of Xingsi 4-6 area of ​​No. 4 Oil Production Plant of Daqing Oilfield. The total investment of the original project is 5.91 million yuan, of which the relocation part investment is 3.93 million yuan, and 30% of the relocation part investment will be lost after demolition, transportation and installation; it covers an area of ​​3000m 2 . Using this invented technology, only one relocation can save investment of 2.76 million yuan in the construction of the new injection station, accounting for about 47% of the total investment of the new injection station, and only covers an area of ​​600m 2 , save the land area; at the same time, the injection station can be reused, and the relocation is convenient.

[0026] It can be seen that due to the reduction in the number of polymer injection pumps, the corresponding reduction in mechanic...

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Abstract

The invention comprises the movable injection station and inject technique of three-time extraction inject system. The character lies in that the resource liquid stabilizing device, prizing pressure-adding device, flow adjust device, high pressure main duct valve group and high pressure water distribution device separately made up as prizing group are set in moveable injection station. As the output pump of allocation station directly feeds the liquid to injection piston pump (of the injection station) and the procedure of one pump for many wells are adopted, the area occupation are mush lessened, that is easy for moving and repeatedly use. The project cost is mush reduced. The demand of different area and earth layer can be met and strong adoptability are provided.

Description

Technical field: [0001] The invention relates to an injection system for tertiary oil recovery in an oil field, which belongs to a relocatable injection station and a polymer injection process thereof. Background technique: [0002] At present, in the tertiary oil recovery process of oilfields, it is necessary to inject future liquid or polymer liquid into the ground for oil displacement, and the injection link is an important link. In the past, single-pump and single-well injection was mostly carried out according to the “upward return” requirement proposed by geologists, that is, after completing a polymer flooding cycle (about 4 years), the next cycle of “upward return” injection is usually performed. The fixed injection station is adopted, and there is no phenomenon of repeated use of the injection station. The adopted process is: liquid supply on elevated tank static pressure, single pump and single well injection process. Two 100m 3 The polymer mother liquor storage t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22
Inventor 郭胜利宗大庆
Owner DAQING OILFIELD CO LTD
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